add simple quote message context menu

git-subtree-dir: external/libwebp/libwebp
git-subtree-split: dd7364c3cefe0f5c0b3c18c3b1887d353f90fc1f

.github/workflows/cd.yml

@@ -0,0 +1,43 @@
+name: ContinuousDelivery
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  BUILD_TYPE: Release
+
+jobs:
+  windows:
+    timeout-minutes: 15
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Install Dependencies
+      run: vcpkg install libsodium:x64-windows-static pthreads:x64-windows-static
+
+    # setup vs env
+    - uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: amd64
+
+    - name: Configure CMake
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+
+    - uses: actions/upload-artifact@v3
+      with:
+        name: windows_msvc_x86-64
+        # TODO: do propper packing
+        path: |
+          ${{github.workspace}}/build/bin/
+

.github/workflows/ci.yml

@@ -0,0 +1,74 @@
+name: ContinuousIntegration
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  BUILD_TYPE: Debug
+
+jobs:
+  linux:
+    timeout-minutes: 10
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Install Dependencies
+      run: sudo apt update && sudo apt -y install libsodium-dev
+
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+
+  macos:
+    timeout-minutes: 10
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Install Dependencies
+      run: brew install libsodium
+
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+
+  windows:
+    timeout-minutes: 10
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Install Dependencies
+      run: vcpkg install libsodium:x64-windows-static pthreads:x64-windows-static
+
+    # setup vs env
+    - uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: amd64
+
+    - name: Configure CMake
+      run: cmake -G Ninja -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows-static
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 4
+

.github/workflows/cpactions.yml

@@ -1,56 +0,0 @@
-name: Build (C/P Actions)
-
-on: [push, pull_request]
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  freebsd:
-    runs-on: ubuntu-latest
-    name: '${{ matrix.platform.name }} ${{ matrix.platform.os-version }}'
-    timeout-minutes: 30
-    strategy:
-      fail-fast: false
-      matrix:
-        platform:
-          - { name: FreeBSD,  os: freebsd,  os-version: 13.2, os-arch: x86-64,  artifact: SDL-freebsd-x64,
-              sdl-cmake-configure-arguments: '-DSDL_CHECK_REQUIRED_INCLUDES="/usr/local/include" -DSDL_CHECK_REQUIRED_LINK_OPTIONS="-L/usr/local/lib"',
-              setup-cmd: 'sudo pkg update',
-              install-cmd: 'sudo pkg install -y cmake ninja pkgconf libXcursor libXext libXinerama libXi libXfixes libXrandr libXScrnSaver libXxf86vm wayland wayland-protocols libxkbcommon mesa-libs libglvnd evdev-proto libinotify alsa-lib jackit pipewire pulseaudio sndio dbus zh-fcitx ibus libudev-devd',
-            }
-          - { name: NetBSD,   os: netbsd,   os-version: 9.3,  os-arch: x86-64,  artifact: SDL-netbsd-x64,
-              sdl-cmake-configure-arguments: '',
-              setup-cmd: 'export PATH="/usr/pkg/sbin:/usr/pkg/bin:/sbin:$PATH";export PKG_CONFIG_PATH="/usr/pkg/lib/pkgconfig";export PKG_PATH="https://cdn.netBSD.org/pub/pkgsrc/packages/NetBSD/$(uname -p)/$(uname -r|cut -f "1 2" -d.)/All/";echo "PKG_PATH=$PKG_PATH";echo "uname -a -> \"$(uname -a)\"";sudo -E sysctl -w security.pax.aslr.enabled=0;sudo -E sysctl -w security.pax.aslr.global=0;sudo -E pkgin clean;sudo -E pkgin update',
-              install-cmd: 'sudo -E pkgin -y install cmake dbus pkgconf ninja-build pulseaudio libxkbcommon wayland wayland-protocols libinotify libusb1',
-            }
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      uses: cross-platform-actions/action@v0.21.1
-      with:
-        operating_system: ${{ matrix.platform.os }}
-        architecture: ${{ matrix.platform.os-arch }}
-        version: ${{ matrix.platform.os-version }}
-        run: |
-          ${{ matrix.platform.setup-cmd }}
-          ${{ matrix.platform.install-cmd }}
-          cmake -S . -B build -GNinja  \
-            -Wdeprecated -Wdev -Werror \
-            -DCMAKE_BUILD_TYPE=Release \
-            -DSDL_WERROR=ON \
-            ${{ matrix.platform.sdl-cmake-configure-arguments }}
-          cmake --build build/ --config Release --verbose
-          cmake --build build/ --config Release --target package
-
-          cmake --build build/ --config Release --target clean
-          rm -rf build/dist/_CPack_Packages
-          rm -rf build/CMakeFiles
-          rm -rf build/docs
-
-    - uses: actions/upload-artifact@v3
-      with:
-        if-no-files-found: error
-        name: ${{ matrix.platform.artifact }}
-        path: build/dist/SDL3*

.gitignore

@@ -1,160 +1,22 @@
-build/
-build-*/
-!build-scripts/
-buildbot/
-/VERSION.txt
-__pycache__
-
-*.so
-*.so.*
-*.dll
-*.exe
+.vs/
 *.o
-*.obj
-*.res
-*.lib
-*.a
-*.la
-*.dSYM
-*,e1f
-*,ff8
-*.lnk
-*.err
-*.exp
-*.map
-*.orig
-*~
 *.swp
-*.tmp
-*.rej
+~*
+*~
+.idea/
+cmake-build-debug/
+cmake-build-debugandtest/
+cmake-build-release/
+*.stackdump
+*.coredump
+compile_commands.json
+/build*
+.clangd
+.cache
 
-# for CMake
-CMakeFiles/
-CMakeCache.txt
-cmake_install.cmake
-cmake_uninstall.cmake
-SDL3ConfigVersion.cmake
-.ninja_*
-*.ninja
-
-# for CLion
-.idea
-cmake-build-*
-
-# for Xcode
-*.mode1*
-*.perspective*
-*.pbxuser
-(^|/)build($|/)
 .DS_Store
-xcuserdata
-*.xcworkspace
+.AppleDouble
+.LSOverride
 
-# for Visual Studio Code
-.vscode/
-
-# for Visual C++
-.vs
-Debug
-Release
-*.user
-*.ncb
-*.suo
-*.sdf
-VisualC/tests/gamepadmap/axis.bmp
-VisualC/tests/gamepadmap/button.bmp
-VisualC/tests/gamepadmap/gamepadmap.bmp
-VisualC/tests/gamepadmap/gamepadmap_back.bmp
-VisualC/tests/loopwave/sample.wav
-VisualC/tests/testautomation/*.bmp
-VisualC/tests/testgamepad/axis.bmp
-VisualC/tests/testgamepad/button.bmp
-VisualC/tests/testgamepad/gamepadmap.bmp
-VisualC/tests/testgamepad/gamepadmap_back.bmp
-VisualC/tests/testoverlay/moose.dat
-VisualC/tests/testrendertarget/icon.bmp
-VisualC/tests/testrendertarget/sample.bmp
-VisualC/tests/testscale/icon.bmp
-VisualC/tests/testscale/sample.bmp
-VisualC/tests/testsprite/icon.bmp
-VisualC/tests/testyuv/testyuv.bmp
-VisualC-GDK/**/Layout
-VisualC-GDK/shaders/*.h
-
-# for Android
-android-project/local.properties
-android-project/.gradle/
-
-test/checkkeys
-test/checkkeysthreads
-test/gamepadmap
-test/loopwave
-test/loopwavequeue
-test/testatomic
-test/testaudiocapture
-test/testaudiohotplug
-test/testaudioinfo
-test/testautomation
-test/testbounds
-test/testcustomcursor
-test/testdisplayinfo
-test/testdraw
-test/testdrawchessboard
-test/testdropfile
-test/testerror
-test/testevdev
-test/testfile
-test/testfilesystem
-test/testgamepad
-test/testgeometry
-test/testgesture
-test/testgl
-test/testgles
-test/testgles2
-test/testhaptic
-test/testhittesting
-test/testhotplug
-test/testiconv
-test/testime
-test/testintersections
-test/testjoystick
-test/testkeys
-test/testloadso
-test/testlocale
-test/testlock
-test/testmessage
-test/testmouse
-test/testmultiaudio
-test/testnative
-test/testoverlay
-test/testplatform
-test/testpower
-test/testqsort
-test/testrelative
-test/testrendercopyex
-test/testrendertarget
-test/testresample
-test/testrumble
-test/testscale
-test/testsem
-test/testsensor
-test/testshader
-test/testshape
-test/testsprite
-test/testspriteminimal
-test/teststreaming
-test/testsurround
-test/testthread
-test/testtimer
-test/testurl
-test/testver
-test/testviewport
-test/testvulkan
-test/testwm
-test/testyuv
-test/torturethread
-
-# for Doxygen
-docs/output
-SDL.tag
-doxygen_warn.txt
+CMakeLists.txt.user*
+CMakeCache.txt

.gitmodules

@@ -0,0 +1,22 @@
+[submodule "external/toxcore/c-toxcore/third_party/cmp"]
+	path = external/toxcore/c-toxcore/third_party/cmp
+	url = https://github.com/camgunz/cmp.git
+	shallow = true
+[submodule "external/solanaceae_toxcore"]
+	path = external/solanaceae_toxcore
+	url = https://github.com/Green-Sky/solanaceae_toxcore.git
+[submodule "external/solanaceae_util"]
+	path = external/solanaceae_util
+	url = https://github.com/Green-Sky/solanaceae_util.git
+[submodule "external/solanaceae_contact"]
+	path = external/solanaceae_contact
+	url = https://github.com/Green-Sky/solanaceae_contact.git
+[submodule "external/solanaceae_message3"]
+	path = external/solanaceae_message3
+	url = https://github.com/Green-Sky/solanaceae_message3.git
+[submodule "external/solanaceae_tox"]
+	path = external/solanaceae_tox
+	url = https://github.com/Green-Sky/solanaceae_tox.git
+[submodule "external/solanaceae_plugin"]
+	path = external/solanaceae_plugin
+	url = https://github.com/Green-Sky/solanaceae_plugin.git

CREDITS.md

@@ -1,34 +0,0 @@
-# Simple DirectMedia Layer CREDITS
-
-Thanks to everyone who made this possible, including:
-
-- Cliff Matthews, for giving me a reason to start this project. :)  -- Executor rocks!  *grin*
-- Ryan Gordon for helping everybody out and keeping the dream alive. :)
-- Gabriel Jacobo for his work on the Android port and generally helping out all around.
-- Philipp Wiesemann for his attention to detail reviewing the entire SDL code base and proposes patches.
-- Andreas Schiffler for his dedication to unit tests, Visual Studio projects, and managing the Google Summer of Code.
-- Mike Sartain for incorporating SDL into Team Fortress 2 and cheering me on at Valve.
-- Alfred Reynolds for the game controller API and general (in)sanity
-- Jørgen Tjernø¸ for numerous magical macOS fixes.
-- Pierre-Loup Griffais for his deep knowledge of OpenGL drivers.
-- Julian Winter for the SDL 2.0 website.
-- Sheena Smith for many months of great work on the SDL wiki creating the API documentation and style guides.
-- Paul Hunkin for his port of SDL to Android during the Google Summer of Code 2010.
-- Eli Gottlieb for his work on shaped windows during the Google Summer of Code 2010.
-- Jim Grandpre for his work on multi-touch and gesture recognition during
-  the Google Summer of Code 2010.
-- Edgar "bobbens" Simo for his force feedback API development during the
-  Google Summer of Code 2008.
-- Aaron Wishnick for his work on audio resampling and pitch shifting during
-  the Google Summer of Code 2008.
-- Holmes Futrell for his port of SDL to the iPhone and iPod Touch during the
-  Google Summer of Code 2008.
-- Jon Atkins for SDL_image, SDL_mixer and SDL_net documentation.
-- Everybody at Loki Software, Inc. for their great contributions!
-
- And a big hand to everyone else who has contributed over the years.
-
-THANKS! :)
-
-    -- Sam Lantinga <slouken@libsdl.org>
-

INSTALL.md

@@ -1,64 +0,0 @@
-# To compile and install SDL:
-
-##  Windows with Visual Studio:
-
-Read ./docs/README-visualc.md
-
-## Windows building with mingw-w64 for x86:
-
-Run: `cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-i686.cmake && cmake --build build && cmake --install build`
-
-## Windows building with mingw-w64 for x64:
-
-Run: `cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-x86_64.cmake && cmake --build build && cmake --install build`
-
-## macOS with Xcode:
-
-Read docs/README-macos.md
-
-## macOS from the command line:
-
-Run: `cmake -S . -B build && cmake --build build && cmake --install build`
-
-## Linux and other UNIX systems:
-
-Run: `cmake -S . -B build && cmake --build build && cmake --install build`
-
-## Android:
-
-Read docs/README-android.md
-
-## iOS:
-
-Read docs/README-ios.md
-
-## Using CMake:
-
-Read docs/README-cmake.md
-
-# Example code
-
-Look at the example programs in ./test, and check out the online
-documentation at https://wiki.libsdl.org/SDL3/
-
-# Discussion
-
-## Forums/mailing lists
-
-Join the SDL developer discussions, sign up on
-
-https://discourse.libsdl.org/
-
-and go to the development forum
-
-https://discourse.libsdl.org/c/sdl-development/6
-
-Once you sign up, you can use the forum through the website, or as a mailing
-list from your email client.
-
-## Announcement list
-
-Sign up for the announcement list through the web interface:
-
-https://www.libsdl.org/mailing-list.php
-

README.md

@@ -1,18 +1,4 @@
+# Tomato
 
-# Simple DirectMedia Layer (SDL) Version 3.0
+![tomato](res/icon/tomato_v1_256.png)
 
-https://www.libsdl.org/
-
-Simple DirectMedia Layer is a cross-platform development library designed
-to provide low level access to audio, keyboard, mouse, joystick, and graphics
-hardware via OpenGL and Direct3D. It is used by video playback software,
-emulators, and popular games including Valve's award winning catalog
-and many Humble Bundle games.
-
-More extensive documentation is available in the docs directory, starting
-with [README.md](docs/README.md). If you are migrating to SDL 3.0 from SDL 2.0,
-the changes are extensively documented in [README-migration.md](docs/README-migration.md).
-
-Enjoy!
-
-Sam Lantinga (slouken@libsdl.org)

VisualC-GDK/SDL/SDL.vcxproj.filters

@@ -1,436 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <ClCompile Include="..\..\src\core\gdk\SDL_gdk.cpp" />
-    <ClCompile Include="..\..\src\core\windows\pch.c" />
-    <ClCompile Include="..\..\src\core\windows\pch_cpp.cpp" />
-    <ClCompile Include="..\..\src\render\direct3d12\SDL_render_d3d12_xbox.cpp" />
-    <ClCompile Include="..\..\src\render\direct3d12\SDL_shaders_d3d12_xboxone.cpp" />
-    <ClCompile Include="..\..\src\render\direct3d12\SDL_shaders_d3d12_xboxseries.cpp" />
-    <ClCompile Include="..\..\src\main\generic\SDL_sysmain_callbacks.c" />
-    <ClCompile Include="..\..\src\main\SDL_main_callbacks.c" />
-    <ClCompile Include="..\..\src\SDL_guid.c" />
-    <ClCompile Include="..\..\src\atomic\SDL_atomic.c" />
-    <ClCompile Include="..\..\src\atomic\SDL_spinlock.c" />
-    <ClCompile Include="..\..\src\audio\directsound\SDL_directsound.c" />
-    <ClCompile Include="..\..\src\audio\disk\SDL_diskaudio.c" />
-    <ClCompile Include="..\..\src\audio\dummy\SDL_dummyaudio.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audio.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audiocvt.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audiodev.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audiotypecvt.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audioqueue.c" />
-    <ClCompile Include="..\..\src\audio\SDL_audioresample.c" />
-    <ClCompile Include="..\..\src\audio\SDL_mixer.c" />
-    <ClCompile Include="..\..\src\audio\SDL_wave.c" />
-    <ClCompile Include="..\..\src\audio\wasapi\SDL_wasapi.c" />
-    <ClCompile Include="..\..\src\audio\wasapi\SDL_wasapi_win32.c" />
-    <ClCompile Include="..\..\src\core\SDL_core_unsupported.c" />
-    <ClCompile Include="..\..\src\core\SDL_runapp.c" />
-    <ClCompile Include="..\..\src\core\windows\SDL_hid.c" />
-    <ClCompile Include="..\..\src\core\windows\SDL_immdevice.c" />
-    <ClCompile Include="..\..\src\core\windows\SDL_windows.c" />
-    <ClCompile Include="..\..\src\core\windows\SDL_xinput.c" />
-    <ClCompile Include="..\..\src\cpuinfo\SDL_cpuinfo.c" />
-    <ClCompile Include="..\..\src\dynapi\SDL_dynapi.c" />
-    <ClCompile Include="..\..\src\events\SDL_clipboardevents.c" />
-    <ClCompile Include="..\..\src\events\SDL_displayevents.c" />
-    <ClCompile Include="..\..\src\events\SDL_dropevents.c" />
-    <ClCompile Include="..\..\src\events\SDL_events.c" />
-    <ClCompile Include="..\..\src\events\SDL_keyboard.c" />
-    <ClCompile Include="..\..\src\events\SDL_mouse.c" />
-    <ClCompile Include="..\..\src\events\SDL_pen.c" />
-    <ClCompile Include="..\..\src\events\SDL_quit.c" />
-    <ClCompile Include="..\..\src\events\SDL_touch.c" />
-    <ClCompile Include="..\..\src\events\SDL_windowevents.c" />
-    <ClCompile Include="..\..\src\file\SDL_rwops.c" />
-    <ClCompile Include="..\..\src\filesystem\gdk\SDL_sysfilesystem.cpp" />
-    <ClCompile Include="..\..\src\haptic\dummy\SDL_syshaptic.c" />
-    <ClCompile Include="..\..\src\haptic\SDL_haptic.c" />
-    <ClCompile Include="..\..\src\haptic\windows\SDL_dinputhaptic.c" />
-    <ClCompile Include="..\..\src\haptic\windows\SDL_windowshaptic.c" />
-    <ClCompile Include="..\..\src\haptic\windows\SDL_xinputhaptic.c" />
-    <ClCompile Include="..\..\src\hidapi\SDL_hidapi.c" />
-    <ClCompile Include="..\..\src\joystick\controller_type.c" />
-    <ClCompile Include="..\..\src\joystick\dummy\SDL_sysjoystick.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapijoystick.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_combined.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_gamecube.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_luna.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_ps3.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_ps4.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_ps5.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_rumble.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_shield.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_stadia.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_steam.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_steamdeck.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_switch.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_wii.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xbox360w.c" />
-    <ClCompile Include="..\..\src\joystick\hidapi\SDL_hidapi_xboxone.c" />
-    <ClCompile Include="..\..\src\joystick\SDL_gamepad.c" />
-    <ClCompile Include="..\..\src\joystick\SDL_joystick.c" />
-    <ClCompile Include="..\..\src\joystick\SDL_steam_virtual_gamepad.c" />
-    <ClCompile Include="..\..\src\joystick\virtual\SDL_virtualjoystick.c" />
-    <ClCompile Include="..\..\src\joystick\windows\SDL_dinputjoystick.c" />
-    <ClCompile Include="..\..\src\joystick\windows\SDL_rawinputjoystick.c" />
-    <ClCompile Include="..\..\src\joystick\windows\SDL_windowsjoystick.c" />
-    <ClCompile Include="..\..\src\joystick\windows\SDL_windows_gaming_input.c" />
-    <ClCompile Include="..\..\src\joystick\windows\SDL_xinputjoystick.c" />
-    <ClCompile Include="..\..\src\libm\e_atan2.c" />
-    <ClCompile Include="..\..\src\libm\e_exp.c" />
-    <ClCompile Include="..\..\src\libm\e_fmod.c" />
-    <ClCompile Include="..\..\src\libm\e_log.c" />
-    <ClCompile Include="..\..\src\libm\e_log10.c" />
-    <ClCompile Include="..\..\src\libm\e_pow.c" />
-    <ClCompile Include="..\..\src\libm\e_rem_pio2.c" />
-    <ClCompile Include="..\..\src\libm\e_sqrt.c" />
-    <ClCompile Include="..\..\src\libm\k_cos.c" />
-    <ClCompile Include="..\..\src\libm\k_rem_pio2.c" />
-    <ClCompile Include="..\..\src\libm\k_sin.c" />
-    <ClCompile Include="..\..\src\libm\k_tan.c" />
-    <ClCompile Include="..\..\src\libm\s_atan.c" />
-    <ClCompile Include="..\..\src\libm\s_copysign.c" />
-    <ClCompile Include="..\..\src\libm\s_cos.c" />
-    <ClCompile Include="..\..\src\libm\s_fabs.c" />
-    <ClCompile Include="..\..\src\libm\s_floor.c" />
-    <ClCompile Include="..\..\src\libm\s_modf.c" />
-    <ClCompile Include="..\..\src\libm\s_scalbn.c" />
-    <ClCompile Include="..\..\src\libm\s_sin.c" />
-    <ClCompile Include="..\..\src\libm\s_tan.c" />
-    <ClCompile Include="..\..\src\loadso\windows\SDL_sysloadso.c" />
-    <ClCompile Include="..\..\src\locale\SDL_locale.c" />
-    <ClCompile Include="..\..\src\locale\windows\SDL_syslocale.c" />
-    <ClCompile Include="..\..\src\misc\SDL_url.c" />
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VisualC-GDK/shaders/D3D12_PixelShader_Colors.hlsl

@@ -1,19 +0,0 @@
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define ColorRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0)"
-
-[RootSignature(ColorRS)]
-float4 main(PixelShaderInput input) : SV_TARGET0
-{
-    return input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV12_BT601.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.5960};
-    const float3 Gcoeff = {1.1644, -0.3918, -0.8130};
-    const float3 Bcoeff = {1.1644,  2.0172,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).rg;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV12_BT709.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.7927};
-    const float3 Gcoeff = {1.1644, -0.2132, -0.5329};
-    const float3 Bcoeff = {1.1644,  2.1124,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).rg;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV12_JPEG.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {0.0, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.0000,  0.0000,  1.4020};
-    const float3 Gcoeff = {1.0000, -0.3441, -0.7141};
-    const float3 Bcoeff = {1.0000,  1.7720,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).rg;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV21_BT601.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.5960};
-    const float3 Gcoeff = {1.1644, -0.3918, -0.8130};
-    const float3 Bcoeff = {1.1644,  2.0172,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).gr;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV21_BT709.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.7927};
-    const float3 Gcoeff = {1.1644, -0.2132, -0.5329};
-    const float3 Bcoeff = {1.1644,  2.1124,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).gr;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_NV21_JPEG.hlsl

@@ -1,43 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureUV : register(t1);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(NVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {0.0, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.0000,  0.0000,  1.4020};
-    const float3 Gcoeff = {1.0000, -0.3441, -0.7141};
-    const float3 Bcoeff = {1.0000,  1.7720,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.yz = theTextureUV.Sample(theSampler, input.tex).gr;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_Textures.hlsl

@@ -1,24 +0,0 @@
-Texture2D theTexture : register(t0);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define TextureRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(TextureRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    return theTexture.Sample(theSampler, input.tex) * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_YUV_BT601.hlsl

@@ -1,46 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureU : register(t1);
-Texture2D theTextureV : register(t2);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define YUVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t2), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(YUVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.5960};
-    const float3 Gcoeff = {1.1644, -0.3918, -0.8130};
-    const float3 Bcoeff = {1.1644,  2.0172,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.y = theTextureU.Sample(theSampler, input.tex).r;
-    yuv.z = theTextureV.Sample(theSampler, input.tex).r;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_YUV_BT709.hlsl

@@ -1,46 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureU : register(t1);
-Texture2D theTextureV : register(t2);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define YUVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t2), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(YUVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {-0.0627451017, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.1644,  0.0000,  1.7927};
-    const float3 Gcoeff = {1.1644, -0.2132, -0.5329};
-    const float3 Bcoeff = {1.1644,  2.1124,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.y = theTextureU.Sample(theSampler, input.tex).r;
-    yuv.z = theTextureV.Sample(theSampler, input.tex).r;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_PixelShader_YUV_JPEG.hlsl

@@ -1,46 +0,0 @@
-Texture2D theTextureY : register(t0);
-Texture2D theTextureU : register(t1);
-Texture2D theTextureV : register(t2);
-SamplerState theSampler : register(s0);
-
-struct PixelShaderInput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define YUVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t2), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(YUVRS)]
-float4 main(PixelShaderInput input) : SV_TARGET
-{
-    const float3 offset = {0.0, -0.501960814, -0.501960814};
-    const float3 Rcoeff = {1.0000,  0.0000,  1.4020};
-    const float3 Gcoeff = {1.0000, -0.3441, -0.7141};
-    const float3 Bcoeff = {1.0000,  1.7720,  0.0000};
-
-    float4 Output;
-
-    float3 yuv;
-    yuv.x = theTextureY.Sample(theSampler, input.tex).r;
-    yuv.y = theTextureU.Sample(theSampler, input.tex).r;
-    yuv.z = theTextureV.Sample(theSampler, input.tex).r;
-
-    yuv += offset;
-    Output.r = dot(yuv, Rcoeff);
-    Output.g = dot(yuv, Gcoeff);
-    Output.b = dot(yuv, Bcoeff);
-    Output.a = 1.0f;
-
-    return Output * input.color;
-}

VisualC-GDK/shaders/D3D12_VertexShader.hlsl

@@ -1,95 +0,0 @@
-#pragma pack_matrix( row_major )
-
-struct VertexShaderConstants
-{
-    matrix model;
-    matrix projectionAndView;
-};
-ConstantBuffer<VertexShaderConstants> Constants : register(b0);
-
-struct VertexShaderInput
-{
-    float3 pos : POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-struct VertexShaderOutput
-{
-    float4 pos : SV_POSITION;
-    float2 tex : TEXCOORD0;
-    float4 color : COLOR0;
-};
-
-#define ColorRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0)"
-
-#define TextureRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-#define YUVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t2), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-#define NVRS \
-    "RootFlags ( ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |" \
-    "            DENY_DOMAIN_SHADER_ROOT_ACCESS |" \
-    "            DENY_GEOMETRY_SHADER_ROOT_ACCESS |" \
-    "            DENY_HULL_SHADER_ROOT_ACCESS )," \
-    "RootConstants(num32BitConstants=32, b0),"\
-    "DescriptorTable ( SRV(t0), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( SRV(t1), visibility = SHADER_VISIBILITY_PIXEL ),"\
-    "DescriptorTable ( Sampler(s0), visibility = SHADER_VISIBILITY_PIXEL )"
-
-[RootSignature(ColorRS)]
-VertexShaderOutput mainColor(VertexShaderInput input)
-{
-    VertexShaderOutput output;
-    float4 pos = float4(input.pos, 1.0f);
-
-    // Transform the vertex position into projected space.
-    pos = mul(pos, Constants.model);
-    pos = mul(pos, Constants.projectionAndView);
-    output.pos = pos;
-
-    // Pass through texture coordinates and color values without transformation
-    output.tex = input.tex;
-    output.color = input.color;
-
-    return output;
-}
-
-[RootSignature(TextureRS)]
-VertexShaderOutput mainTexture(VertexShaderInput input)
-{
-    return mainColor(input);
-}
-
-[RootSignature(YUVRS)]
-VertexShaderOutput mainYUV(VertexShaderInput input)
-{
-    return mainColor(input);
-}
-
-[RootSignature(NVRS)]
-VertexShaderOutput mainNV(VertexShaderInput input)
-{
-    return mainColor(input);
-}

VisualC-GDK/shaders/buildshaders.bat

@@ -1,35 +0,0 @@
-if %2.==one. goto setxboxone
-rem Xbox Series compile
-set XBOXDXC="%GameDKLatest%\GXDK\bin\Scarlett\DXC.exe"
-set SUFFIX=_Series.h
-goto startbuild
-
-:setxboxone
-set XBOXDXC="%GameDKLatest%\GXDK\bin\XboxOne\DXC.exe"
-set SUFFIX=_One.h
-
-:startbuild
-echo Building with %XBOXDXC%
-cd "%1\shaders"
-rem Root Signatures
-%XBOXDXC% -E ColorRS -T rootsig_1_1 -rootsig-define ColorRS -Fh D3D12_RootSig_Color%SUFFIX% -Vn D3D12_RootSig_Color D3D12_VertexShader.hlsl
-%XBOXDXC% -E TextureRS -T rootsig_1_1 -rootsig-define TextureRS -Fh D3D12_RootSig_Texture%SUFFIX% -Vn D3D12_RootSig_Texture D3D12_VertexShader.hlsl
-%XBOXDXC% -E YUVRS -T rootsig_1_1 -rootsig-define YUVRS -Fh D3D12_RootSig_YUV%SUFFIX% -Vn D3D12_RootSig_YUV D3D12_VertexShader.hlsl
-%XBOXDXC% -E NVRS -T rootsig_1_1 -rootsig-define NVRS -Fh D3D12_RootSig_NV%SUFFIX% -Vn D3D12_RootSig_NV D3D12_VertexShader.hlsl
-rem Vertex Shaders
-%XBOXDXC% -E mainColor -T vs_6_0 -Fh D3D12_VertexShader_Color%SUFFIX% -Vn D3D12_VertexShader_Color D3D12_VertexShader.hlsl
-%XBOXDXC% -E mainTexture -T vs_6_0 -Fh D3D12_VertexShader_Texture%SUFFIX% -Vn D3D12_VertexShader_Texture D3D12_VertexShader.hlsl
-%XBOXDXC% -E mainNV -T vs_6_0 -Fh D3D12_VertexShader_NV%SUFFIX% -Vn D3D12_VertexShader_NV D3D12_VertexShader.hlsl
-%XBOXDXC% -E mainYUV -T vs_6_0 -Fh D3D12_VertexShader_YUV%SUFFIX% -Vn D3D12_VertexShader_YUV D3D12_VertexShader.hlsl
-rem Pixel Shaders
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_Colors%SUFFIX% -Vn D3D12_PixelShader_Colors D3D12_PixelShader_Colors.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV12_BT601%SUFFIX% -Vn D3D12_PixelShader_NV12_BT601 D3D12_PixelShader_NV12_BT601.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV12_BT709%SUFFIX% -Vn D3D12_PixelShader_NV12_BT709 D3D12_PixelShader_NV12_BT709.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV12_JPEG%SUFFIX% -Vn D3D12_PixelShader_NV12_JPEG D3D12_PixelShader_NV12_JPEG.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV21_BT601%SUFFIX% -Vn D3D12_PixelShader_NV21_BT601 D3D12_PixelShader_NV21_BT601.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV21_BT709%SUFFIX% -Vn D3D12_PixelShader_NV21_BT709 D3D12_PixelShader_NV21_BT709.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_NV21_JPEG%SUFFIX% -Vn D3D12_PixelShader_NV21_JPEG D3D12_PixelShader_NV21_JPEG.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_Textures%SUFFIX% -Vn D3D12_PixelShader_Textures D3D12_PixelShader_Textures.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_YUV_BT601%SUFFIX% -Vn D3D12_PixelShader_YUV_BT601 D3D12_PixelShader_YUV_BT601.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_YUV_BT709%SUFFIX% -Vn D3D12_PixelShader_YUV_BT709 D3D12_PixelShader_YUV_BT709.hlsl
-%XBOXDXC% -E main -T ps_6_0 -Fh D3D12_PixelShader_YUV_JPEG%SUFFIX% -Vn D3D12_PixelShader_YUV_JPEG D3D12_PixelShader_YUV_JPEG.hlsl

VisualC/tests/testpen/testpen.vcxproj

@@ -1,204 +0,0 @@
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-      <Configuration>Debug</Configuration>
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-      <Platform>Win32</Platform>
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-      <Configuration>Release</Configuration>
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-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{C4E04D18-EF76-4B42-B4C2-16A1BACDC1A3}</ProjectGuid>
-    <RootNamespace>testpower</RootNamespace>
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-    <ConfigurationType>Application</ConfigurationType>
-    <PlatformToolset Condition="'$(VisualStudioVersion)' != '10.0'">$(DefaultPlatformToolset)</PlatformToolset>
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-    <ConfigurationType>Application</ConfigurationType>
-    <PlatformToolset Condition="'$(VisualStudioVersion)' != '10.0'">$(DefaultPlatformToolset)</PlatformToolset>
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-      <ReferenceOutputAssembly>true</ReferenceOutputAssembly>
-    </ProjectReference>
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android-project/app/src/main/java/org/libsdl/app/SDLDummyEdit.java

@@ -1,62 +0,0 @@
-package org.libsdl.app;
-
-import android.content.*;
-import android.text.InputType;
-import android.view.*;
-import android.view.inputmethod.EditorInfo;
-import android.view.inputmethod.InputConnection;
-
-/* This is a fake invisible editor view that receives the input and defines the
- * pan&scan region
- */
-public class SDLDummyEdit extends View implements View.OnKeyListener
-{
-    InputConnection ic;
-
-    public SDLDummyEdit(Context context) {
-        super(context);
-        setFocusableInTouchMode(true);
-        setFocusable(true);
-        setOnKeyListener(this);
-    }
-
-    @Override
-    public boolean onCheckIsTextEditor() {
-        return true;
-    }
-
-    @Override
-    public boolean onKey(View v, int keyCode, KeyEvent event) {
-        return SDLActivity.handleKeyEvent(v, keyCode, event, ic);
-    }
-
-    //
-    @Override
-    public boolean onKeyPreIme (int keyCode, KeyEvent event) {
-        // As seen on StackOverflow: http://stackoverflow.com/questions/7634346/keyboard-hide-event
-        // FIXME: Discussion at http://bugzilla.libsdl.org/show_bug.cgi?id=1639
-        // FIXME: This is not a 100% effective solution to the problem of detecting if the keyboard is showing or not
-        // FIXME: A more effective solution would be to assume our Layout to be RelativeLayout or LinearLayout
-        // FIXME: And determine the keyboard presence doing this: http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android
-        // FIXME: An even more effective way would be if Android provided this out of the box, but where would the fun be in that :)
-        if (event.getAction()==KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
-            if (SDLActivity.mTextEdit != null && SDLActivity.mTextEdit.getVisibility() == View.VISIBLE) {
-                SDLActivity.onNativeKeyboardFocusLost();
-            }
-        }
-        return super.onKeyPreIme(keyCode, event);
-    }
-
-    @Override
-    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
-        ic = new SDLInputConnection(this, true);
-
-        outAttrs.inputType = InputType.TYPE_CLASS_TEXT |
-                             InputType.TYPE_TEXT_FLAG_MULTI_LINE;
-        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI |
-                              EditorInfo.IME_FLAG_NO_FULLSCREEN /* API 11 */;
-
-        return ic;
-    }
-}
-

android-project/app/src/main/java/org/libsdl/app/SDLInputConnection.java

@@ -1,136 +0,0 @@
-package org.libsdl.app;
-
-import android.content.*;
-import android.os.Build;
-import android.text.Editable;
-import android.view.*;
-import android.view.inputmethod.BaseInputConnection;
-import android.widget.EditText;
-
-public class SDLInputConnection extends BaseInputConnection
-{
-    protected EditText mEditText;
-    protected String mCommittedText = "";
-
-    public SDLInputConnection(View targetView, boolean fullEditor) {
-        super(targetView, fullEditor);
-        mEditText = new EditText(SDL.getContext());
-    }
-
-    @Override
-    public Editable getEditable() {
-        return mEditText.getEditableText();
-    }
-
-    @Override
-    public boolean sendKeyEvent(KeyEvent event) {
-        /*
-         * This used to handle the keycodes from soft keyboard (and IME-translated input from hardkeyboard)
-         * However, as of Ice Cream Sandwich and later, almost all soft keyboard doesn't generate key presses
-         * and so we need to generate them ourselves in commitText.  To avoid duplicates on the handful of keys
-         * that still do, we empty this out.
-         */
-
-        /*
-         * Return DOES still generate a key event, however.  So rather than using it as the 'click a button' key
-         * as we do with physical keyboards, let's just use it to hide the keyboard.
-         */
-
-        if (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
-            if (SDLActivity.onNativeSoftReturnKey()) {
-                return true;
-            }
-        }
-
-        return super.sendKeyEvent(event);
-    }
-
-    @Override
-    public boolean commitText(CharSequence text, int newCursorPosition) {
-        if (!super.commitText(text, newCursorPosition)) {
-            return false;
-        }
-        updateText();
-        return true;
-    }
-
-    @Override
-    public boolean setComposingText(CharSequence text, int newCursorPosition) {
-        if (!super.setComposingText(text, newCursorPosition)) {
-            return false;
-        }
-        updateText();
-        return true;
-    }
-
-    @Override
-    public boolean deleteSurroundingText(int beforeLength, int afterLength) {
-        if (Build.VERSION.SDK_INT <= 29 /* Android 10.0 (Q) */) {
-            // Workaround to capture backspace key. Ref: http://stackoverflow.com/questions>/14560344/android-backspace-in-webview-baseinputconnection
-            // and https://bugzilla.libsdl.org/show_bug.cgi?id=2265
-            if (beforeLength > 0 && afterLength == 0) {
-                // backspace(s)
-                while (beforeLength-- > 0) {
-                    nativeGenerateScancodeForUnichar('\b');
-                }
-                return true;
-           }
-        }
-
-        if (!super.deleteSurroundingText(beforeLength, afterLength)) {
-            return false;
-        }
-        updateText();
-        return true;
-    }
-
-    protected void updateText() {
-        final Editable content = getEditable();
-        if (content == null) {
-            return;
-        }
-
-        String text = content.toString();
-        int compareLength = Math.min(text.length(), mCommittedText.length());
-        int matchLength, offset;
-
-        /* Backspace over characters that are no longer in the string */
-        for (matchLength = 0; matchLength < compareLength; ) {
-            int codePoint = mCommittedText.codePointAt(matchLength);
-            if (codePoint != text.codePointAt(matchLength)) {
-                break;
-            }
-            matchLength += Character.charCount(codePoint);
-        }
-        /* FIXME: This doesn't handle graphemes, like '🌬️' */
-        for (offset = matchLength; offset < mCommittedText.length(); ) {
-            int codePoint = mCommittedText.codePointAt(offset);
-            nativeGenerateScancodeForUnichar('\b');
-            offset += Character.charCount(codePoint);
-        }
-
-        if (matchLength < text.length()) {
-            String pendingText = text.subSequence(matchLength, text.length()).toString();
-            for (offset = 0; offset < pendingText.length(); ) {
-                int codePoint = pendingText.codePointAt(offset);
-                if (codePoint == '\n') {
-                    if (SDLActivity.onNativeSoftReturnKey()) {
-                        return;
-                    }
-                }
-                /* Higher code points don't generate simulated scancodes */
-                if (codePoint < 128) {
-                    nativeGenerateScancodeForUnichar((char)codePoint);
-                }
-                offset += Character.charCount(codePoint);
-            }
-            SDLInputConnection.nativeCommitText(pendingText, 0);
-        }
-        mCommittedText = text;
-    }
-
-    public static native void nativeCommitText(String text, int newCursorPosition);
-
-    public static native void nativeGenerateScancodeForUnichar(char c);
-}
-

build-scripts/add-source-to-projects.pl

@@ -1,600 +0,0 @@
-#!/usr/bin/perl -w
-
-# Add source files and headers to Xcode and Visual Studio projects.
-# THIS IS NOT ROBUST, THIS IS JUST RYAN AVOIDING RUNNING BETWEEN
-# THREE COMPUTERS AND A BUNCH OF DEVELOPMENT ENVIRONMENTS TO ADD
-# A STUPID FILE TO THE BUILD.
-
-
-use warnings;
-use strict;
-use File::Basename;
-
-
-my %xcode_references = ();
-sub generate_xcode_id {
-    my @chars = ('0'..'9', 'A'..'F');
-    my $str;
-
-    do {
-        my $len = 16;
-        $str = '0000';  # start and end with '0000' so we know we added it.
-        while ($len--) {
-            $str .= $chars[rand @chars]
-        };
-        $str .= '0000';  # start and end with '0000' so we know we added it.
-    } while (defined($xcode_references{$str}));
-
-    $xcode_references{$str} = 1;  # so future calls can't generate this one.
-
-    return $str;
-}
-
-sub process_xcode {
-    my $addpath = shift;
-    my $pbxprojfname = shift;
-    my $lineno;
-
-    %xcode_references = ();
-
-    my $addfname = basename($addpath);
-    my $addext = '';
-    if ($addfname =~ /\.(.*?)\Z/) {
-        $addext = $1;
-    }
-
-    my $is_public_header = ($addpath =~ /\Ainclude\/SDL3\//) ? 1 : 0;
-    my $filerefpath = $is_public_header ? "SDL3/$addfname" : $addfname;
-
-    my $srcs_or_headers = '';
-    my $addfiletype = '';
-
-    if ($addext eq 'c') {
-        $srcs_or_headers = 'Sources';
-        $addfiletype = 'sourcecode.c.c';
-    } elsif ($addext eq 'm') {
-        $srcs_or_headers = 'Sources';
-        $addfiletype = 'sourcecode.c.objc';
-    } elsif ($addext eq 'h') {
-        $srcs_or_headers = 'Headers';
-        $addfiletype = 'sourcecode.c.h';
-    } else {
-        die("Unexpected file extension '$addext'\n");
-    }
-
-    my $fh;
-
-    open $fh, '<', $pbxprojfname or die("Failed to open '$pbxprojfname': $!\n");
-    chomp(my @pbxproj = <$fh>);
-    close($fh);
-
-    # build a table of all ids, in case we duplicate one by some miracle.
-    $lineno = 0;
-    foreach (@pbxproj) {
-        $lineno++;
-
-        # like "F3676F582A7885080091160D /* SDL3.dmg */ = {"
-        if (/\A\t\t([A-F0-9]{24}) \/\* (.*?) \*\/ \= \{\Z/) {
-            $xcode_references{$1} = $2;
-        }
-    }
-
-    # build out of a tree of PBXGroup items.
-    my %pbxgroups = ();
-    my $thispbxgroup;
-    my $pbxgroup_children;
-    my $pbxgroup_state = 0;
-    my $pubheaders_group_hash = '';
-    my $libsrc_group_hash = '';
-    $lineno = 0;
-    foreach (@pbxproj) {
-        $lineno++;
-        if ($pbxgroup_state == 0) {
-            $pbxgroup_state++ if /\A\/\* Begin PBXGroup section \*\/\Z/;
-        } elsif ($pbxgroup_state == 1) {
-            # like "F3676F582A7885080091160D /* SDL3.dmg */ = {"
-            if (/\A\t\t([A-F0-9]{24}) \/\* (.*?) \*\/ \= \{\Z/) {
-                my %newhash = ();
-                $pbxgroups{$1} = \%newhash;
-                $thispbxgroup = \%newhash;
-                $pubheaders_group_hash = $1 if $2 eq 'Public Headers';
-                $libsrc_group_hash = $1 if $2 eq 'Library Source';
-                $pbxgroup_state++;
-            } elsif (/\A\/\* End PBXGroup section \*\/\Z/) {
-                last;
-            } else {
-                die("Expected pbxgroup obj on '$pbxprojfname' line $lineno\n");
-            }
-        } elsif ($pbxgroup_state == 2) {
-            if (/\A\t\t\tisa \= PBXGroup;\Z/) {
-                $pbxgroup_state++;
-            } else {
-                die("Expected pbxgroup obj's isa field on '$pbxprojfname' line $lineno\n");
-            }
-        } elsif ($pbxgroup_state == 3) {
-            if (/\A\t\t\tchildren \= \(\Z/) {
-                my %newhash = ();
-                $$thispbxgroup{'children'} = \%newhash;
-                $pbxgroup_children = \%newhash;
-                $pbxgroup_state++;
-            } else {
-                die("Expected pbxgroup obj's children field on '$pbxprojfname' line $lineno\n");
-            }
-        } elsif ($pbxgroup_state == 4) {
-            if (/\A\t\t\t\t([A-F0-9]{24}) \/\* (.*?) \*\/,\Z/) {
-                $$pbxgroup_children{$1} = $2;
-            } elsif (/\A\t\t\t\);\Z/) {
-                $pbxgroup_state++;
-            } else {
-                die("Expected pbxgroup obj's children element on '$pbxprojfname' line $lineno\n");
-            }
-        } elsif ($pbxgroup_state == 5) {
-            if (/\A\t\t\t(.*?) \= (.*?);\Z/) {
-                $$thispbxgroup{$1} = $2;
-            } elsif (/\A\t\t\};\Z/) {
-                $pbxgroup_state = 1;
-            } else {
-                die("Expected pbxgroup obj field on '$pbxprojfname' line $lineno\n");
-            }
-        } else {
-            die("bug in this script.");
-        }
-    }
-
-    die("Didn't see PBXGroup section in '$pbxprojfname'. Bug?\n") if $pbxgroup_state == 0;
-    die("Didn't see Public Headers PBXGroup in '$pbxprojfname'. Bug?\n") if $pubheaders_group_hash eq '';
-    die("Didn't see Library Source PBXGroup in '$pbxprojfname'. Bug?\n") if $libsrc_group_hash eq '';
-
-    # Some debug log dumping...
-    if (0) {
-        foreach (keys %pbxgroups) {
-            my $k = $_;
-            my $g = $pbxgroups{$k};
-            print("$_:\n");
-            foreach (keys %$g) {
-                print("  $_:\n");
-                if ($_ eq 'children') {
-                    my $kids = $$g{$_};
-                    foreach (keys %$kids) {
-                        print("    $_ -> " . $$kids{$_} . "\n");
-                    }
-                } else {
-                    print('    ' . $$g{$_} . "\n");
-                }
-            }
-            print("\n");
-        }
-    }
-
-    # Get some unique IDs for our new thing.
-    my $fileref = generate_xcode_id();
-    my $buildfileref = generate_xcode_id();
-
-
-    # Figure out what group to insert this into (or what groups to make)
-    my $add_to_group_fileref = $fileref;
-    my $add_to_group_addfname = $addfname;
-    my $newgrptext = '';
-    my $grphash = '';
-    if ($is_public_header) {
-        $grphash = $pubheaders_group_hash;  # done!
-    } else  {
-        $grphash = $libsrc_group_hash;
-        my @splitpath = split(/\//, dirname($addpath));
-        if ($splitpath[0] eq 'src') {
-            shift @splitpath;
-        }
-        while (my $elem = shift(@splitpath)) {
-            my $g = $pbxgroups{$grphash};
-            my $kids = $$g{'children'};
-            my $found = 0;
-            foreach (keys %$kids) {
-                my $hash = $_;
-                my $fname = $$kids{$hash};
-                if (uc($fname) eq uc($elem)) {
-                    $grphash = $hash;
-                    $found = 1;
-                    last;
-                }
-            }
-            unshift(@splitpath, $elem), last if (not $found);
-        }
-
-        if (@splitpath) {  # still elements? We need to build groups.
-            my $newgroupref = generate_xcode_id();
-
-            $add_to_group_fileref = $newgroupref;
-            $add_to_group_addfname = $splitpath[0];
-
-            while (my $elem = shift(@splitpath)) {
-                my $lastelem = @splitpath ? 0 : 1;
-                my $childhash = $lastelem ? $fileref : generate_xcode_id();
-                my $childpath = $lastelem ? $addfname : $splitpath[0];
-                $newgrptext .= "\t\t$newgroupref /* $elem */ = {\n";
-                $newgrptext .= "\t\t\tisa = PBXGroup;\n";
-                $newgrptext .= "\t\t\tchildren = (\n";
-                $newgrptext .= "\t\t\t\t$childhash /* $childpath */,\n";
-                $newgrptext .= "\t\t\t);\n";
-                $newgrptext .= "\t\t\tpath = $elem;\n";
-                $newgrptext .= "\t\t\tsourceTree = \"<group>\";\n";
-                $newgrptext .= "\t\t};\n";
-                $newgroupref = $childhash;
-            }
-        }
-    }
-
-    my $tmpfname = "$pbxprojfname.tmp";
-    open $fh, '>', $tmpfname or die("Failed to open '$tmpfname': $!\n");
-
-    my $add_to_this_group = 0;
-    $pbxgroup_state = 0;
-    $lineno = 0;
-    foreach (@pbxproj) {
-        $lineno++;
-        if ($pbxgroup_state == 0) {
-            # Drop in new references at the end of their sections...
-            if (/\A\/\* End PBXBuildFile section \*\/\Z/) {
-                print $fh "\t\t$buildfileref /* $addfname in $srcs_or_headers */ = {isa = PBXBuildFile; fileRef = $fileref /* $addfname */;";
-                if ($is_public_header) {
-                    print $fh " settings = {ATTRIBUTES = (Public, ); };";
-                }
-                print $fh " };\n";
-            } elsif (/\A\/\* End PBXFileReference section \*\/\Z/) {
-                print $fh "\t\t$fileref /* $addfname */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = $addfiletype; name = $addfname; path = $filerefpath; sourceTree = \"<group>\"; };\n";
-            } elsif (/\A\/\* Begin PBXGroup section \*\/\Z/) {
-                $pbxgroup_state = 1;
-            } elsif (/\A\/\* Begin PBXSourcesBuildPhase section \*\/\Z/) {
-                $pbxgroup_state = 5;
-            }
-        } elsif ($pbxgroup_state == 1) {
-            if (/\A\t\t([A-F0-9]{24}) \/\* (.*?) \*\/ \= \{\Z/) {
-                $pbxgroup_state++;
-                $add_to_this_group = $1 eq $grphash;
-            } elsif (/\A\/\* End PBXGroup section \*\/\Z/) {
-                print $fh $newgrptext;
-                $pbxgroup_state = 0;
-            }
-        } elsif ($pbxgroup_state == 2) {
-            if (/\A\t\t\tchildren \= \(\Z/) {
-                $pbxgroup_state++;
-            }
-        } elsif ($pbxgroup_state == 3) {
-            if (/\A\t\t\t\);\Z/) {
-                if ($add_to_this_group) {
-                    print $fh "\t\t\t\t$add_to_group_fileref /* $add_to_group_addfname */,\n";
-                }
-                $pbxgroup_state++;
-            }
-        } elsif ($pbxgroup_state == 4) {
-            if (/\A\t\t\};\Z/) {
-                $add_to_this_group = 0;
-            }
-            $pbxgroup_state = 1;
-        } elsif ($pbxgroup_state == 5) {
-            if (/\A\t\t\t\);\Z/) {
-                if ($srcs_or_headers eq 'Sources') {
-                    print $fh "\t\t\t\t$buildfileref /* $addfname in $srcs_or_headers */,\n";
-                }
-                $pbxgroup_state = 0;
-            }
-        }
-
-        print $fh "$_\n";
-    }
-
-    close($fh);
-    rename($tmpfname, $pbxprojfname);
-}
-
-my %visualc_references = ();
-sub generate_visualc_id {   # these are just standard Windows GUIDs.
-    my @chars = ('0'..'9', 'a'..'f');
-    my $str;
-
-    do {
-        my $len = 24;
-        $str = '0000';  # start and end with '0000' so we know we added it.
-        while ($len--) {
-            $str .= $chars[rand @chars]
-        };
-        $str .= '0000';  # start and end with '0000' so we know we added it.
-        $str =~ s/\A(........)(....)(....)(............)\Z/$1-$2-$3-$4/;  # add dashes in the appropriate places.
-    } while (defined($visualc_references{$str}));
-
-    $visualc_references{$str} = 1;  # so future calls can't generate this one.
-
-    return $str;
-}
-
-
-sub process_visualstudio {
-    my $addpath = shift;
-    my $vcxprojfname = shift;
-    my $lineno;
-
-    %visualc_references = ();
-
-    my $is_public_header = ($addpath =~ /\Ainclude\/SDL3\//) ? 1 : 0;
-
-    my $addfname = basename($addpath);
-    my $addext = '';
-    if ($addfname =~ /\.(.*?)\Z/) {
-        $addext = $1;
-    }
-
-    my $isheader = 0;
-    if ($addext eq 'c') {
-        $isheader = 0;
-    } elsif ($addext eq 'm') {
-        return;  # don't add Objective-C files to Visual Studio projects!
-    } elsif ($addext eq 'h') {
-        $isheader = 1;
-    } else {
-        die("Unexpected file extension '$addext'\n");
-    }
-
-    my $fh;
-
-    open $fh, '<', $vcxprojfname or die("Failed to open '$vcxprojfname': $!\n");
-    chomp(my @vcxproj = <$fh>);
-    close($fh);
-
-    my $vcxgroup_state;
-
-    my $rawaddvcxpath = "$addpath";
-    $rawaddvcxpath =~ s/\//\\/g;
-
-    # Figure out relative path from vcxproj file...
-    my $addvcxpath = '';
-    my @subdirs = split(/\//, $vcxprojfname);
-    pop @subdirs;
-    foreach (@subdirs) {
-        $addvcxpath .= "..\\";
-    }
-    $addvcxpath .= $rawaddvcxpath;
-
-    my $prevname = undef;
-
-    my $tmpfname;
-
-    $tmpfname = "$vcxprojfname.tmp";
-    open $fh, '>', $tmpfname or die("Failed to open '$tmpfname': $!\n");
-
-    my $added = 0;
-
-    $added = 0;
-    $vcxgroup_state = 0;
-    $prevname = undef;
-    $lineno = 0;
-    foreach (@vcxproj) {
-        $lineno++;
-        if ($vcxgroup_state == 0) {
-            if (/\A  \<ItemGroup\>\Z/) {
-                $vcxgroup_state = 1;
-                $prevname = undef;
-            }
-        } elsif ($vcxgroup_state == 1) {
-            if (/\A    \<ClInclude .*\Z/) {
-                $vcxgroup_state = 2 if $isheader;
-            } elsif (/\A    \<ClCompile .*\Z/) {
-                $vcxgroup_state = 3 if not $isheader;
-            } elsif (/\A  \<\/ItemGroup\>\Z/) {
-                $vcxgroup_state = 0;
-                $prevname = undef;
-            }
-        }
-
-        # Don't do elsif, we need to check this line again.
-        if ($vcxgroup_state == 2) {
-            if (/\A    <ClInclude Include="(.*?)" \/\>\Z/) {
-                my $nextname = $1;
-                if ((not $added) && (((not defined $prevname) || (uc($prevname) lt uc($addvcxpath))) && (uc($nextname) gt uc($addvcxpath)))) {
-                    print $fh "    <ClInclude Include=\"$addvcxpath\" />\n";
-                    $vcxgroup_state = 0;
-                    $added = 1;
-                }
-                $prevname = $nextname;
-            } elsif (/\A  \<\/ItemGroup\>\Z/) {
-                if ((not $added) && ((not defined $prevname) || (uc($prevname) lt uc($addvcxpath)))) {
-                    print $fh "    <ClInclude Include=\"$addvcxpath\" />\n";
-                    $vcxgroup_state = 0;
-                    $added = 1;
-                }
-            }
-        } elsif ($vcxgroup_state == 3) {
-            if (/\A    <ClCompile Include="(.*?)" \/\>\Z/) {
-                my $nextname = $1;
-                if ((not $added) && (((not defined $prevname) || (uc($prevname) lt uc($addvcxpath))) && (uc($nextname) gt uc($addvcxpath)))) {
-                    print $fh "    <ClCompile Include=\"$addvcxpath\" />\n";
-                    $vcxgroup_state = 0;
-                    $added = 1;
-                }
-                $prevname = $nextname;
-            } elsif (/\A  \<\/ItemGroup\>\Z/) {
-                if ((not $added) && ((not defined $prevname) || (uc($prevname) lt uc($addvcxpath)))) {
-                    print $fh "    <ClCompile Include=\"$addvcxpath\" />\n";
-                    $vcxgroup_state = 0;
-                    $added = 1;
-                }
-            }
-        }
-
-        print $fh "$_\n";
-    }
-
-    close($fh);
-    rename($tmpfname, $vcxprojfname);
-
-    my $vcxfiltersfname = "$vcxprojfname.filters";
-    open $fh, '<', $vcxfiltersfname or die("Failed to open '$vcxfiltersfname': $!\n");
-    chomp(my @vcxfilters = <$fh>);
-    close($fh);
-
-    my $newgrptext = '';
-    my $filter = '';
-    if ($is_public_header) {
-        $filter = 'API Headers';
-    } else {
-        $filter = lc(dirname($addpath));
-        $filter =~ s/\Asrc\///; # there's no filter for the base "src/" dir, where SDL.c and friends live.
-        $filter =~ s/\//\\/g;
-        $filter = '' if $filter eq 'src';
-
-        if ($filter ne '') {
-            # see if the filter already exists, otherwise add it.
-            my %existing_filters = ();
-            my $current_filter = '';
-            my $found = 0;
-            foreach (@vcxfilters) {
-                # These lines happen to be unique, so we don't have to parse down to find this section.
-                if (/\A    \<Filter Include\="(.*?)"\>\Z/) {
-                    $current_filter = lc($1);
-                    if ($current_filter eq $filter) {
-                        $found = 1;
-                    }
-                } elsif (/\A      \<UniqueIdentifier\>\{(.*?)\}\<\/UniqueIdentifier\>\Z/) {
-                    $visualc_references{$1} = $current_filter;  # gather up existing GUIDs to avoid duplicates.
-                    $existing_filters{$current_filter} = $1;
-                }
-            }
-
-            if (not $found) {  # didn't find it? We need to build filters.
-                my $subpath = '';
-                my @splitpath = split(/\\/, $filter);
-                while (my $elem = shift(@splitpath)) {
-                    $subpath .= "\\" if ($subpath ne '');
-                    $subpath .= $elem;
-                    if (not $existing_filters{$subpath}) {
-                        my $newgroupref = generate_visualc_id();
-                        $newgrptext .= "    <Filter Include=\"$subpath\">\n";
-                        $newgrptext .= "      <UniqueIdentifier>{$newgroupref}</UniqueIdentifier>\n";
-                        $newgrptext .= "    </Filter>\n"
-                    }
-                }
-            }
-        }
-    }
-
-    $tmpfname = "$vcxfiltersfname.tmp";
-    open $fh, '>', $tmpfname or die("Failed to open '$tmpfname': $!\n");
-
-    $added = 0;
-    $vcxgroup_state = 0;
-    $prevname = undef;
-    $lineno = 0;
-    foreach (@vcxfilters) {
-        $lineno++;
-
-        # We cheat here, because these lines are unique, we don't have to fully parse this file.
-        if ($vcxgroup_state == 0) {
-            if (/\A    \<Filter Include\="(.*?)"\>\Z/) {
-                if ($newgrptext ne '') {
-                    $vcxgroup_state = 1;
-                    $prevname = undef;
-                }
-            } elsif (/\A    \<ClInclude .*\Z/) {
-                if ($isheader) {
-                    $vcxgroup_state = 2;
-                    $prevname = undef;
-                }
-            } elsif (/\A    \<ClCompile .*\Z/) {
-                if (not $isheader) {
-                    $vcxgroup_state = 3;
-                    $prevname = undef;
-                }
-            }
-        }
-
-        # Don't do elsif, we need to check this line again.
-        if ($vcxgroup_state == 1) {
-            if (/\A  \<\/ItemGroup\>\Z/) {
-                print $fh $newgrptext;
-                $newgrptext = '';
-                $vcxgroup_state = 0;
-            }
-        } elsif ($vcxgroup_state == 2) {
-            if (/\A    <ClInclude Include="(.*?)"/) {
-                my $nextname = $1;
-                if ((not $added) && (((not defined $prevname) || (uc($prevname) lt uc($addvcxpath))) && (uc($nextname) gt uc($addvcxpath)))) {
-                    print $fh "    <ClInclude Include=\"$addvcxpath\"";
-                    if ($filter ne '') {
-                        print $fh ">\n";
-                        print $fh "      <Filter>$filter</Filter>\n";
-                        print $fh "    </ClInclude>\n";
-                    } else {
-                        print $fh " />\n";
-                    }
-                    $added = 1;
-                }
-                $prevname = $nextname;
-            } elsif (/\A  \<\/ItemGroup\>\Z/) {
-                if ((not $added) && ((not defined $prevname) || (uc($prevname) lt uc($addvcxpath)))) {
-                    print $fh "    <ClInclude Include=\"$addvcxpath\"";
-                    if ($filter ne '') {
-                        print $fh ">\n";
-                        print $fh "      <Filter>$filter</Filter>\n";
-                        print $fh "    </ClInclude>\n";
-                    } else {
-                        print $fh " />\n";
-                    }
-                    $added = 1;
-                }
-                $vcxgroup_state = 0;
-            }
-        } elsif ($vcxgroup_state == 3) {
-            if (/\A    <ClCompile Include="(.*?)"/) {
-                my $nextname = $1;
-                if ((not $added) && (((not defined $prevname) || (uc($prevname) lt uc($addvcxpath))) && (uc($nextname) gt uc($addvcxpath)))) {
-                    print $fh "    <ClCompile Include=\"$addvcxpath\"";
-                    if ($filter ne '') {
-                        print $fh ">\n";
-                        print $fh "      <Filter>$filter</Filter>\n";
-                        print $fh "    </ClCompile>\n";
-                    } else {
-                        print $fh " />\n";
-                    }
-                    $added = 1;
-                }
-                $prevname = $nextname;
-            } elsif (/\A  \<\/ItemGroup\>\Z/) {
-                if ((not $added) && ((not defined $prevname) || (uc($prevname) lt uc($addvcxpath)))) {
-                    print $fh "    <ClCompile Include=\"$addvcxpath\"";
-                    if ($filter ne '') {
-                        print $fh ">\n";
-                        print $fh "      <Filter>$filter</Filter>\n";
-                        print $fh "    </ClCompile>\n";
-                    } else {
-                        print $fh " />\n";
-                    }
-                    $added = 1;
-                }
-                $vcxgroup_state = 0;
-            }
-        }
-
-        print $fh "$_\n";
-    }
-
-    close($fh);
-    rename($tmpfname, $vcxfiltersfname);
-}
-
-
-# Mainline!
-
-chdir(dirname($0));  # assumed to be in build-scripts
-chdir('..');  # head to root of source tree.
-
-foreach (@ARGV) {
-    s/\A\.\///;  # Turn "./path/to/file.txt" into "path/to/file.txt"
-    my $arg = $_;
-    process_xcode($arg, 'Xcode/SDL/SDL.xcodeproj/project.pbxproj');
-    process_visualstudio($arg, 'VisualC/SDL/SDL.vcxproj');
-    process_visualstudio($arg, 'VisualC-GDK/SDL/SDL.vcxproj');
-    process_visualstudio($arg, 'VisualC-WinRT/SDL-UWP.vcxproj');
-}
-
-print("Done. Please run `git diff` and make sure this looks okay!\n");
-
-exit(0);
-

cmake/FindFFmpeg.cmake

@@ -1,138 +0,0 @@
-# - Try to find the required ffmpeg components(default: AVFORMAT, AVUTIL, AVCODEC)
-#
-# Once done this will define
-#  FFMPEG_FOUND         - System has the all required components.
-#  FFMPEG_LIBRARIES     - Link these to use the required ffmpeg components.
-#
-# For each of the components it will additionally set.
-#   - AVCODEC
-#   - AVDEVICE
-#   - AVFORMAT
-#   - AVFILTER
-#   - AVUTIL
-#   - POSTPROC
-#   - SWSCALE
-# the following target will be defined
-#  FFmpeg::SDL::<component>        - link to this target to
-# the following variables will be defined
-#  FFmpeg_<component>_FOUND        - System has <component>
-#  FFmpeg_<component>_INCLUDE_DIRS - Include directory necessary for using the <component> headers
-#  FFmpeg_<component>_LIBRARIES    - Link these to use <component>
-#  FFmpeg_<component>_DEFINITIONS  - Compiler switches required for using <component>
-#  FFmpeg_<component>_VERSION      - The components version
-#
-# Copyright (c) 2006, Matthias Kretz, <kretz@kde.org>
-# Copyright (c) 2008, Alexander Neundorf, <neundorf@kde.org>
-# Copyright (c) 2011, Michael Jansen, <kde@michael-jansen.biz>
-# Copyright (c) 2023, Sam lantinga, <slouken@libsdl.org>
-#
-# Redistribution and use is allowed according to the terms of the BSD license.
-# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
-
-include(FindPackageHandleStandardArgs)
-include("${CMAKE_CURRENT_LIST_DIR}/PkgConfigHelper.cmake")
-
-# The default components were taken from a survey over other FindFFMPEG.cmake files
-if(NOT FFmpeg_FIND_COMPONENTS)
-  set(FFmpeg_FIND_COMPONENTS AVCODEC AVFORMAT AVUTIL)
-  foreach(_component IN LISTS FFmpeg_FIND_COMPONENTS)
-    set(FFmpeg_FIND_REQUIRED_${_component} TRUE)
-  endforeach()
-endif()
-
-find_package(PkgConfig QUIET)
-
-#
-### Macro: find_component
-#
-# Checks for the given component by invoking pkgconfig and then looking up the libraries and
-# include directories.
-#
-macro(find_component _component _pkgconfig _library _header)
-
-  # use pkg-config to get the directories and then use these values
-  # in the FIND_PATH() and FIND_LIBRARY() calls
-  if(PKG_CONFIG_FOUND)
-    pkg_check_modules(PC_${_component} QUIET ${_pkgconfig})
-  endif()
-
-  find_path(FFmpeg_${_component}_INCLUDE_DIRS
-    NAMES ${_header}
-    HINTS
-      ${PC_${_component}_INCLUDE_DIRS}
-    PATH_SUFFIXES
-      ffmpeg
-  )
-
-  find_library(FFmpeg_${_component}_LIBRARY
-    NAMES ${_library}
-    HINTS
-      ${PC_${_component}_LIBRARY_DIRS}
-  )
-
-  if(FFmpeg_${_component}_INCLUDE_DIRS AND FFmpeg_${_component}_LIBRARY)
-    set(FFmpeg_${_component}_FOUND TRUE)
-  endif()
-
-  if(PC_${_component}_FOUND)
-    get_flags_from_pkg_config("${FFmpeg_${_component}_LIBRARY}" "PC_${_component}" "${_component}")
-  endif()
-
-  set(FFmpeg_${_component}_VERSION "${PC_${_component}_VERSION}")
-
-  set(FFmpeg_${_component}_COMPILE_OPTIONS "${${_component}_options}" CACHE STRING "Extra compile options of FFmpeg ${_component}")
-
-  set(FFmpeg_${_component}_LIBRARIES "${${_component}_link_libraries}" CACHE STRING "Extra link libraries of FFmpeg ${_component}")
-
-  set(FFmpeg_${_component}_LINK_OPTIONS "${${_component}_link_options}" CACHE STRING "Extra link flags of FFmpeg ${_component}")
-
-  set(FFmpeg_${_component}_LINK_DIRECTORIES "${${_component}_link_directories}" CACHE PATH "Extra link directories of FFmpeg ${_component}")
-
-  mark_as_advanced(
-    FFmpeg_${_component}_INCLUDE_DIRS
-    FFmpeg_${_component}_LIBRARY
-    FFmpeg_${_component}_COMPILE_OPTIONS
-    FFmpeg_${_component}_LIBRARIES
-    FFmpeg_${_component}_LINK_OPTIONS
-    FFmpeg_${_component}_LINK_DIRECTORIES
-  )
-endmacro()
-
-# Check for all possible component.
-find_component(AVCODEC    libavcodec    avcodec  libavcodec/avcodec.h)
-find_component(AVFORMAT   libavformat   avformat libavformat/avformat.h)
-find_component(AVDEVICE   libavdevice   avdevice libavdevice/avdevice.h)
-find_component(AVUTIL     libavutil     avutil   libavutil/avutil.h)
-find_component(AVFILTER   libavfilter   avfilter libavfilter/avfilter.h)
-find_component(SWSCALE    libswscale    swscale  libswscale/swscale.h)
-find_component(POSTPROC   libpostproc   postproc libpostproc/postprocess.h)
-find_component(SWRESAMPLE libswresample swresample libswresample/swresample.h)
-
-# Compile the list of required vars
-set(_FFmpeg_REQUIRED_VARS)
-foreach(_component ${FFmpeg_FIND_COMPONENTS})
-  list(APPEND _FFmpeg_REQUIRED_VARS FFmpeg_${_component}_INCLUDE_DIRS FFmpeg_${_component}_LIBRARY)
-endforeach ()
-
-# Give a nice error message if some of the required vars are missing.
-find_package_handle_standard_args(FFmpeg DEFAULT_MSG ${_FFmpeg_REQUIRED_VARS})
-
-set(FFMPEG_LIBRARIES)
-if(FFmpeg_FOUND)
-  foreach(_component IN LISTS FFmpeg_FIND_COMPONENTS)
-    if(FFmpeg_${_component}_FOUND)
-      list(APPEND FFMPEG_LIBRARIES FFmpeg::SDL::${_component})
-      if(NOT TARGET FFmpeg::SDL::${_component})
-        add_library(FFmpeg::SDL::${_component} UNKNOWN IMPORTED)
-        set_target_properties(FFmpeg::SDL::${_component} PROPERTIES
-          IMPORTED_LOCATION "${FFmpeg_${_component}_LIBRARY}"
-          INTERFACE_INCLUDE_DIRECTORIES "${FFmpeg_${_component}_INCLUDE_DIRS}"
-          INTERFACE_COMPILE_OPTIONS "${FFmpeg_${_component}_COMPILE_OPTIONS}"
-          INTERFACE_LINK_LIBRARIES "${FFmpeg_${_component}_LIBRARIES}"
-          INTERFACE_LINK_OPTIONS "${FFmpeg_${_component}_LINK_OPTIONS}"
-          INTERFACE_LINK_DIRECTORIES "${FFmpeg_${_component}_LINK_DIRECTORIES}"
-        )
-      endif()
-    endif()
-  endforeach()
-endif()

cmake/SDL3jarTargets.cmake.in

@@ -1,10 +0,0 @@
-@PACKAGE_INIT@
-
-set_and_check(SDL3_JAR "@PACKAGE_SDL_INSTALL_JAVADIR@/SDL3/SDL3-@SDL3_VERSION@.jar")
-
-if(NOT TARGET SDL3::Jar)
-  add_library(SDL3::Jar INTERFACE IMPORTED)
-  set_property(TARGET SDL3::Jar PROPERTY JAR_FILE "${SDL3_JAR}")
-endif()
-
-unset(SDL3_JAR)

docs/README-emscripten.md

@@ -1,365 +0,0 @@
-# Emscripten
-
-## The state of things
-
-(As of September 2023, but things move quickly and we don't update this
-document often.)
-
-In modern times, all the browsers you probably care about (Chrome, Firefox,
-Edge, and Safari, on Windows, macOS, Linux, iOS and Android), support some
-reasonable base configurations:
-
-- WebAssembly (don't bother with asm.js any more)
-- WebGL (which will look like OpenGL ES 2 or 3 to your app).
-- Threads (see caveats, though!)
-- Game controllers
-- Autoupdating (so you can assume they have a recent version of the browser)
-
-All this to say we're at the point where you don't have to make a lot of
-concessions to get even a fairly complex SDL-based game up and running.
-
-
-## RTFM
-
-This document is a quick rundown of some high-level details. The
-documentation at [emscripten.org](https://emscripten.org/) is vast
-and extremely detailed for a wide variety of topics, and you should at
-least skim through it at some point.
-
-
-## Porting your app to Emscripten
-
-Many many things just need some simple adjustments and they'll compile
-like any other C/C++ code, as long as SDL was handling the platform-specific
-work for your program.
-
-First, you probably need this in at least one of your source files:
-
-```c
-#ifdef __EMSCRIPTEN__
-#include <emscripten.h>
-#endif
-```
-
-Second: assembly language code has to go. Replace it with C. You can even use
-[x86 SIMD intrinsic functions in Emscripten](https://emscripten.org/docs/porting/simd.html)!
-
-Third: Middleware has to go. If you have a third-party library you link
-against, you either need an Emscripten port of it, or the source code to it
-to compile yourself, or you need to remove it.
-
-Fourth: You still start in a function called main(), but you need to get out of
-it and into a function that gets called repeatedly, and returns quickly,
-called a mainloop.
-
-Somewhere in your program, you probably have something that looks like a more
-complicated version of this:
-
-```c
-void main(void)
-{
-    initialize_the_game();
-    while (game_is_still_running) {
-        check_for_new_input();
-        think_about_stuff();
-        draw_the_next_frame();
-    }
-    deinitialize_the_game();
-}
-```
-
-This will not work on Emscripten, because the main thread needs to be free
-to do stuff and can't sit in this loop forever. So Emscripten lets you set up
-a [mainloop](https://emscripten.org/docs/porting/emscripten-runtime-environment.html#browser-main-loop).
-
-```c
-static void mainloop(void)   /* this will run often, possibly at the monitor's refresh rate */
-{
-    if (!game_is_still_running) {
-        deinitialize_the_game();
-        #ifdef __EMSCRIPTEN__
-        emscripten_cancel_main_loop();  /* this should "kill" the app. */
-        #else
-        exit(0);
-        #endif
-    }
-
-    check_for_new_input();
-    think_about_stuff();
-    draw_the_next_frame();
-}
-
-void main(void)
-{
-    initialize_the_game();
-    #ifdef __EMSCRIPTEN__
-    emscripten_set_main_loop(mainloop, 0, 1);
-    #else
-    while (1) { mainloop(); }
-    #endif
-}
-```
-
-Basically, `emscripten_set_main_loop(mainloop, 0, 1);` says "run
-`mainloop` over and over until I end the program." The function will
-run, and return, freeing the main thread for other tasks, and then
-run again when it's time. The `1` parameter does some magic to make
-your main() function end immediately; this is useful because you
-don't want any shutdown code that might be sitting below this code
-to actually run if main() were to continue on, since we're just
-getting started.
-
-There's a lot of little details that are beyond the scope of this
-document, but that's the biggest intial set of hurdles to porting
-your app to the web.
-
-
-## Do you need threads?
-
-If you plan to use threads, they work on all major browsers now. HOWEVER,
-they bring with them a lot of careful considerations. Rendering _must_
-be done on the main thread. This is a general guideline for many
-platforms, but a hard requirement on the web.
-
-Many other things also must happen on the main thread; often times SDL
-and Emscripten make efforts to "proxy" work to the main thread that
-must be there, but you have to be careful (and read more detailed
-documentation than this for the finer points).
-
-Even when using threads, your main thread needs to set an Emscripten
-mainloop that runs quickly and returns, or things will fail to work
-correctly.
-
-You should definitely read [Emscripten's pthreads docs](https://emscripten.org/docs/porting/pthreads.html)
-for all the finer points. Mostly SDL's thread API will work as expected,
-but is built on pthreads, so it shares the same little incompatibilities
-that are documented there, such as where you can use a mutex, and when
-a thread will start running, etc.
-
-
-IMPORTANT: You have to decide to either build something that uses
-threads or something that doesn't; you can't have one build
-that works everywhere. This is an Emscripten (or maybe WebAssembly?
-Or just web browsers in general?) limitation. If you aren't using
-threads, it's easier to not enable them at all, at build time.
-
-If you use threads, you _have to_ run from a web server that has
-[COOP/COEP headers set correctly](https://web.dev/why-coop-coep/)
-or your program will fail to start at all.
-
-If building with threads, `__EMSCRIPTEN_PTHREADS__` will be defined
-for checking with the C preprocessor, so you can build something
-different depending on what sort of build you're compiling.
-
-
-## Audio
-
-Audio works as expected at the API level, but not exactly like other
-platforms.
-
-You'll only see a single default audio device. Audio capture also works;
-if the browser pops up a prompt to ask for permission to access the
-microphone, the SDL_OpenAudioDevice call will succeed and start producing
-silence at a regular interval. Once the user approves the request, real
-audio data will flow. If the user denies it, the app is not informed and
-will just continue to receive silence.
-
-Modern web browsers will not permit web pages to produce sound before the
-user has interacted with them (clicked or tapped on them, usually); this is
-for several reasons, not the least of which being that no one likes when a
-random browser tab suddenly starts making noise and the user has to scramble
-to figure out which and silence it.
-
-SDL will allow you to open the audio device for playback in this
-circumstance, and your audio callback will fire, but SDL will throw the audio
-data away until the user interacts with the page. This helps apps that depend
-on the audio callback to make progress, and also keeps audio playback in sync
-once the app is finally allowed to make noise.
-
-There are two reasonable ways to deal with the silence at the app level:
-if you are writing some sort of media player thing, where the user expects
-there to be a volume control when you mouseover the canvas, just default
-that control to a muted state; if the user clicks on the control to unmute
-it, on this first click, open the audio device. This allows the media to
-play at start, and the user can reasonably opt-in to listening.
-
-Many games do not have this sort of UI, and are more rigid about starting
-audio along with everything else at the start of the process. For these, your
-best bet is to write a little Javascript that puts up a "Click here to play!"
-UI, and upon the user clicking, remove that UI and then call the Emscripten
-app's main() function. As far as the application knows, the audio device was
-available to be opened as soon as the program started, and since this magic
-happens in a little Javascript, you don't have to change your C/C++ code at
-all to make it happen.
-
-Please see the discussion at https://github.com/libsdl-org/SDL/issues/6385
-for some Javascript code to steal for this approach.
-
-
-## Rendering
-
-If you use SDL's 2D render API, it will use GLES2 internally, which
-Emscripten will turn into WebGL calls. You can also use OpenGL ES 2
-directly by creating a GL context and drawing into it.
-
-Calling SDL_RenderPresent (or SDL_GL_SwapWindow) will not actually
-present anything on the screen until your return from your mainloop
-function.
-
-
-## Building SDL/emscripten
-
-First: do you _really_ need to build SDL from source?
-
-If you aren't developing SDL itself, have a desire to mess with its source
-code, or need something on the bleeding edge, don't build SDL. Just use
-Emscripten's packaged version!
-
-Compile and link your app with `-sUSE_SDL=2` and it'll use a build of
-SDL packaged with Emscripten. This comes from the same source code and
-fixes the Emscripten project makes to SDL are generally merged into SDL's
-revision control, so often this is much easier for app developers.
-
-`-sUSE_SDL=1` will select Emscripten's JavaScript reimplementation of SDL
-1.2 instead; if you need SDL 1.2, this might be fine, but we generally
-recommend you don't use SDL 1.2 in modern times.
-
-
-If you want to build SDL, though...
-
-SDL currently requires at least Emscripten 3.1.35 to build. Newer versions
-are likely to work, as well.
-
-
-Build:
-
-This works on Linux/Unix and macOS. Please send comments about Windows.
-
-Make sure you've [installed emsdk](https://emscripten.org/docs/getting_started/downloads.html)
-first, and run `source emsdk_env.sh` at the command line so it finds the
-tools.
-
-(These cmake options might be overkill, but this has worked for me.)
-
-```bash
-mkdir build
-cd build
-emcmake cmake ..
-# you can also do `emcmake cmake -G Ninja ..` and then use `ninja` instead of this command.
-emmake make -j4
-```
-
-If you want to build with thread support, something like this works:
-
-```bash
-mkdir build
-cd build
-emcmake cmake -DSDL_THREADS=On ..
-# you can also do `emcmake cmake -G Ninja ..` and then use `ninja` instead of this command.
-emmake make -j4
-```
-
-To build the tests, add `-DSDL_TESTS=On` to the `emcmake cmake` command line.
-
-
-## Building your app
-
-You need to compile with `emcc` instead of `gcc` or `clang` or whatever, but
-mostly it uses the same command line arguments as Clang.
-
-Link against the SDL/build/libSDL3.a file you generated by building SDL,
-link with `-sUSE_SDL=2` to use Emscripten's prepackaged SDL2 build.
-
-Usually you would produce a binary like this:
-
-```bash
-gcc -o mygame mygame.c  # or whatever
-```
-
-But for Emscripten, you want to output something else:
-
-```bash
-emcc -o index.html mygame.c
-```
-
-This will produce several files...support Javascript and WebAssembly (.wasm)
-files. The `-o index.html` will produce a simple HTML page that loads and
-runs your app. You will (probably) eventually want to replace or customize
-that file and do `-o index.js` instead to just build the code pieces.
-
-If you're working on a program of any serious size, you'll likely need to
-link with `-sALLOW_MEMORY_GROWTH=1 -sMAXIMUM_MEMORY=1gb` to get access
-to more memory. If using pthreads, you'll need the `-sMAXIMUM_MEMORY=1gb`
-or the app will fail to start on iOS browsers, but this might be a bug that
-goes away in the future.
-
-
-## Data files
-
-Your game probably has data files. Here's how to access them.
-
-Filesystem access works like a Unix filesystem; you have a single directory
-tree, possibly interpolated from several mounted locations, no drive letters,
-'/' for a path separator. You can access them with standard file APIs like
-open() or fopen() or SDL_RWops. You can read or write from the filesystem.
-
-By default, you probably have a "MEMFS" filesystem (all files are stored in
-memory, but access to them is immediate and doesn't need to block). There are
-other options, like "IDBFS" (files are stored in a local database, so they
-don't need to be in RAM all the time and they can persist between runs of the
-program, but access is not synchronous). You can mix and match these file
-systems, mounting a MEMFS filesystem at one place and idbfs elsewhere, etc,
-but that's beyond the scope of this document. Please refer to Emscripten's
-[page on the topic](https://emscripten.org/docs/porting/files/file_systems_overview.html)
-for more info.
-
-The _easiest_ (but not the best) way to get at your data files is to embed
-them in the app itself. Emscripten's linker has support for automating this.
-
-```bash
-emcc -o index.html loopwave.c --embed-file=../test/sample.wav@/sounds/sample.wav
-```
-
-This will pack ../test/sample.wav in your app, and make it available at
-"/sounds/sample.wav" at runtime. Emscripten makes sure this data is available
-before your main() function runs, and since it's in MEMFS, you can just
-read it like you do on other platforms. `--embed-file` can also accept a
-directory to pack an entire tree, and you can specify the argument multiple
-times to pack unrelated things into the final installation.
-
-Note that this is absolutely the best approach if you have a few small
-files to include and shouldn't worry about the issue further. However, if you
-have hundreds of megabytes and/or thousands of files, this is not so great,
-since the user will download it all every time they load your page, and it
-all has to live in memory at runtime.
-
-[Emscripten's documentation on the matter](https://emscripten.org/docs/porting/files/packaging_files.html)
-gives other options and details, and is worth a read.
-
-
-## Debugging
-
-Debugging web apps is a mixed bag. You should compile and link with
-`-gsource-map`, which embeds a ton of source-level debugging information into
-the build, and make sure _the app source code is available on the web server_,
-which is often a scary proposition for various reasons.
-
-When you debug from the browser's tools and hit a breakpoint, you can step
-through the actual C/C++ source code, though, which can be nice.
-
-If you try debugging in Firefox and it doesn't work well for no apparent
-reason, try Chrome, and vice-versa. These tools are still relatively new,
-and improving all the time.
-
-SDL_Log() (or even plain old printf) will write to the Javascript console,
-and honestly I find printf-style debugging to be easier than setting up a build
-for proper debugging, so use whatever tools work best for you.
-
-
-## Questions?
-
-Please give us feedback on this document at [the SDL bug tracker](https://github.com/libsdl-org/SDL/issues).
-If something is wrong or unclear, we want to know!
-
-
-

docs/README-main-functions.md

@@ -1,194 +0,0 @@
-# Where an SDL program starts running.
-
-## History
-
-SDL has a long, complicated history with starting a program.
-
-In most of the civilized world, an application starts in a C-callable
-function named "main". You probably learned it a long time ago:
-
-```c
-int main(int argc, char **argv)
-{
-    printf("Hello world!\n");
-    return 0;
-}
-```
-
-But not all platforms work like this. Windows apps might want a different
-function named "WinMain", for example, so SDL set out to paper over this
-difference.
-
-Generally how this would work is: your app would always use the "standard"
-`main(argc, argv)` function as its entry point, and `#include` the proper
-SDL header before that, which did some macro magic. On platforms that used
-a standard `main`, it would do nothing and what you saw was what you got.
-
-But those other platforms! If they needed something that _wasn't_ `main`,
-SDL's macro magic would quietly rename your function to `SDL_main`, and
-provide its own entry point that called it. Your app was none the wiser and
-your code worked everywhere without changes.
-
-
-## The main entry point in SDL3
-
-Previous versions of SDL had a static library, SDLmain, that you would link
-your app against. SDL3 still has the same macro tricks, but the static library
-is gone. Now it's supplied by a "single-header library," which means you
-`#include <SDL3/SDL_main.h>` and that header will insert a small amount of
-code into the source file that included it, so you no longer have to worry
-about linking against an extra library that you might need on some platforms.
-You just build your app and it works.
-
-You should _only_ include SDL_main.h from one file (the umbrella header,
-SDL.h, does _not_ include it), and know that it will `#define main` to
-something else, so if you use this symbol elsewhere as a variable name, etc,
-it can cause you unexpected problems.
-
-SDL_main.h will also include platform-specific code (WinMain or whatnot) that
-calls your _actual_ main function. This is compiled directly into your
-program.
-
-If for some reason you need to include SDL_main.h in a file but also _don't_
-want it to generate this platform-specific code, you should define a special
-macro before including the header:
-
-
-```c
-#define SDL_MAIN_NOIMPL
-```
-
-If you are moving from SDL2, remove any references to the SDLmain static
-library from your build system, and you should be done. Things should work as
-they always have.
-
-If you have never controlled your process's entry point (you are using SDL
-as a module from a general-purpose scripting language interpreter, or you're
-using SDL in a plugin for some otherwise-unrelated app), then there is nothing
-required of you here; there is no startup code in SDL's entry point code that
-is required, so using SDL_main.h is completely optional. Just start using
-the SDL API when you are ready.
-
-
-## Main callbacks in SDL3
-
-There is a second option in SDL3 for how to structure your program. This is
-completely optional and you can ignore it if you're happy using a standard
-"main" function.
-
-Some platforms would rather your program operate in chunks. Most of the time,
-games tend to look like this at the highest level:
-
-```c
-int main(int argc, char **argv)
-{
-    initialize();
-    while (keep_running()) {
-        handle_new_events();
-        do_one_frame_of_stuff();
-    }
-    deinitialize();
-}
-```
-
-There are platforms that would rather be in charge of that `while` loop:
-iOS would rather you return from main() immediately and then it will let you
-know that it's time to update and draw the next frame of video. Emscripten
-(programs that run on a web page) absolutely requires this to function at all.
-Video targets like Wayland can notify the app when to draw a new frame, to
-save battery life and cooperate with the compositor more closely.
-
-In most cases, you can add special-case code to your program to deal with this
-on different platforms, but SDL3 offers a system to handle this transparently on
-the app's behalf.
-
-To use this, you have to redesign the highest level of your app a little. Once
-you do, it'll work on all supported SDL platforms without problems and
-`#ifdef`s in your code.
-
-Instead of providing a "main" function, under this system, you would provide
-several functions that SDL will call as appropriate.
-
-Using the callback entry points works on every platform, because on platforms
-that don't require them, we can fake them with a simple loop in an internal
-implementation of the usual SDL_main.
-
-The primary way we expect people to write SDL apps is still with SDL_main, and
-this is not intended to replace it. If the app chooses to use this, it just
-removes some platform-specific details they might have to otherwise manage,
-and maybe removes a barrier to entry on some future platform. And you might
-find you enjoy structuring your program like this more!
-
-
-## How to use main callbacks in SDL3
-
-To enable the callback entry points, you include SDL_main.h with an extra define,
-from a single source file in your project:
-
-```c
-#define SDL_MAIN_USE_CALLBACKS
-#include <SDL3/SDL_main.h>
-```
-
-Once you do this, you do not write a "main" function at all (and if you do,
-the app will likely fail to link). Instead, you provide the following
-functions:
-
-First:
-
-```c
-int SDL_AppInit(int argc, char **argv);
-```
-
-This will be called _once_ before anything else. argc/argv work like they
-always do. If this returns 0, the app runs. If it returns < 0, the app calls
-SDL_AppQuit and terminates with an exit code that reports an error to the
-platform. If it returns > 0, the app calls SDL_AppQuit and terminates with
-an exit code that reports success to the platform. This function should not
-go into an infinite mainloop; it should do any one-time startup it requires
-and then return.
-
-Then:
-
-```c
-int SDL_AppIterate(void);
-```
-
-This is called over and over, possibly at the refresh rate of the display or
-some other metric that the platform dictates. This is where the heart of your
-app runs. It should return as quickly as reasonably possible, but it's not a
-"run one memcpy and that's all the time you have" sort of thing. The app
-should do any game updates, and render a frame of video. If it returns < 0,
-SDL will call SDL_AppQuit and terminate the process with an exit code that
-reports an error to the platform. If it returns > 0, the app calls
-SDL_AppQuit and terminates with an exit code that reports success to the
-platform. If it returns 0, then SDL_AppIterate will be called again at some
-regular frequency. The platform may choose to run this more or less (perhaps
-less in the background, etc), or it might just call this function in a loop
-as fast as possible. You do not check the event queue in this function
-(SDL_AppEvent exists for that).
-
-Next:
-
-```c
-int SDL_AppEvent(const SDL_Event *event);
-```
-
-This will be called whenever an SDL event arrives, on the thread that runs
-SDL_AppIterate.  Your app should also not call SDL_PollEvent, SDL_PumpEvent,
-etc, as  SDL will manage all this for you. Return values are the same as from
-SDL_AppIterate(), so you can terminate in response to SDL_EVENT_QUIT, etc.
-
-
-Finally:
-
-```c
-void SDL_AppQuit(void);
-```
-
-This is called once before terminating the app--assuming the app isn't being
-forcibly killed or crashed--as a last chance to clean up. After this returns,
-SDL will call SDL_Quit so the app doesn't have to (but it's safe for the app
-to call it, too). Process termination proceeds as if the app returned normally
-from main(), so atexit handles will run, if your platform supports that.
-

docs/README-wayland.md

@@ -1,223 +0,0 @@
-Wayland
-=======
-Wayland is a replacement for the X11 window system protocol and architecture and is favored over X11 by default in SDL3
-for communicating with desktop compositors. It works well for the majority of applications, however, applications may
-encounter limitations or behavior that is different from other windowing systems.
-
-## Common issues:
-
-### Window decorations are missing, or the decorations look strange
-
-- On some desktops (i.e. GNOME), Wayland applications use a library
-  called [libdecor](https://gitlab.freedesktop.org/libdecor/libdecor) to provide window decorations. If this library is
-  not installed, the decorations will be missing. This library uses plugins to generate different decoration styles, and
-  if a plugin to generate native-looking decorations is not installed (i.e. the GTK plugin), the decorations will not
-  appear to be 'native'.
-
-### Windows do not appear immediately after creation
-
-- Wayland requires that the application initially present a buffer before the window becomes visible. Additionally,
-  applications _must_ have an event loop and processes messages on a regular basis, or the application can appear
-  unresponsive to both the user and desktop compositor.
-
-### ```SDL_SetWindowPosition()``` doesn't work on non-popup windows
-
-- Wayland does not allow toplevel windows to position themselves programmatically.
-
-### Retrieving the global mouse cursor position when the cursor is outside a window doesn't work
-
-- Wayland only provides applications with the cursor position within the borders of the application windows. Querying
-  the global position when an application window does not have mouse focus returns 0,0 as the actual cursor position is
-  unknown. In most cases, applications don't actually need the global cursor position and should use the window-relative
-  coordinates as provided by the mouse movement event or from ```SDL_GetMouseState()``` instead.
-
-### Warping the global mouse cursor position via ```SDL_WarpMouseGlobal()``` doesn't work
-
-- For security reasons, Wayland does not allow warping the global mouse cursor position.
-
-### The application icon can't be set via ```SDL_SetWindowIcon()```
-
-- Wayland doesn't support programmatically setting the application icon. To provide a custom icon for your application,
-  you must create an associated desktop entry file, aka a `.desktop` file, that points to the icon image. Please see the
-  [Desktop Entry Specification](https://specifications.freedesktop.org/desktop-entry-spec/latest/) for more information
-  on the format of this file. Note that if your application manually sets the application ID via the `SDL_APP_ID` hint
-  string, the desktop entry file name should match the application ID. For example, if your application ID is set
-  to `org.my_org.sdl_app`, the desktop entry file should be named `org.my_org.sdl_app.desktop`.
-
-## Using custom Wayland windowing protocols with SDL windows
-
-Under normal operation, an `SDL_Window` corresponds to an XDG toplevel window, which provides a standard desktop window.
-If an application wishes to use a different windowing protocol with an SDL window (e.g. wlr_layer_shell) while still
-having SDL handle input and rendering, it needs to create a custom, roleless surface and attach that surface to its own
-toplevel window.
-
-This is done by using `SDL_CreateWindowWithProperties()` and setting the
-`SDL_PROPERTY_WINDOW_CREATE_WAYLAND_SURFACE_ROLE_CUSTOM_BOOLEAN` property to `SDL_TRUE`. Once the window has been
-successfully created, the `wl_display` and `wl_surface` objects can then be retrieved from the
-`SDL_PROPERTY_WINDOW_WAYLAND_DISPLAY_POINTER` and `SDL_PROPERTY_WINDOW_WAYLAND_SURFACE_POINTER` properties respectively.
-
-Surfaces don't receive any size change notifications, so if an application changes the window size, it must inform SDL
-that the surface size has changed by calling SDL_SetWindowSize() with the new dimensions.
-
-Custom surfaces will automatically handle scaling internally if the window was created with the
-`SDL_PROPERTY_WINDOW_CREATE_HIGH_PIXEL_DENSITY_BOOLEAN` property set to `SDL_TRUE`. In this case, applications should
-not manually attach viewports or change the surface scale value, as SDL will handle this internally. Calls
-to `SDL_SetWindowSize()` should use the logical size of the window, and `SDL_GetWindowSizeInPixels()` should be used to
-query the size of the backbuffer surface in pixels. If this property is not set or is `SDL_FALSE`, applications can
-attach their own viewports or change the surface scale manually, and the SDL backend will not interfere or change any
-values internally. In this case, calls to `SDL_SetWindowSize()` should pass the requested surface size in pixels, not
-the logical window size, as no scaling calculations will be done internally.
-
-All window functions that control window state aside from `SDL_SetWindowSize()` are no-ops with custom surfaces.
-
-Please see the minimal example in `tests/testwaylandcustom.c` for an example of how to use a custom, roleless surface
-and attach it to an application-managed toplevel window.
-
-## Importing external surfaces into SDL windows
-
-Wayland windows and surfaces are more intrinsically tied to the client library than other windowing systems, therefore,
-when importing surfaces, it is necessary for both SDL and the application or toolkit to use the same `wl_display`
-object. This can be set/queried via the global `SDL_PROPERTY_GLOBAL_VIDEO_WAYLAND_WL_DISPLAY_POINTER` property. To
-import an external `wl_display`, set this property before initializing the SDL video subsystem, and read the value to
-export the internal `wl_display` after the video subsystem has been initialized. Setting this property after the video
-subsystem has been initialized has no effect, and reading it when the video subsystem is uninitialized will either
-return the user provided value, if one was set while in the uninitialized state, or NULL.
-
-Once this is done, and the application has created or obtained the `wl_surface` to be wrapped in an `SDL_Window`, the
-window is created with `SDL_CreateWindowWithProperties()` with the
-`SDL_PROPERTY_WINDOW_CREATE_WAYLAND_WL_SURFACE_POINTER` property to set to the `wl_surface` object that is to be
-imported by SDL.
-
-SDL receives no notification regarding size changes on external surfaces or toplevel windows, so if the external surface
-needs to be resized, SDL must be informed by calling SDL_SetWindowSize() with the new dimensions.
-
-If desired, SDL can automatically handle the scaling for the surface by setting the
-`SDL_PROPERTY_WINDOW_CREATE_HIGH_PIXEL_DENSITY_BOOLEAN` property to `SDL_TRUE`, however, if the surface being imported
-already has, or will have, a viewport/fractional scale manager attached to it by the application or an external toolkit,
-a protocol violation will result. Avoid setting this property if importing surfaces from toolkits such as Qt or GTK.
-
-If the window is flagged as high pixel density, calls to `SDL_SetWindowSize()` should pass the logical size of the
-window and `SDL_GetWindowSizeInPixels()` should be used to retrieve the backbuffer size in pixels. Otherwise, calls to
-`SDL_SetWindowSize()` should pass the requested surface size in pixels, not the logical window size, as no scaling
-calculations will be done internally.
-
-All window functions that control window state aside from `SDL_SetWindowSize()` are no-ops with external surfaces.
-
-An example of how to use external surfaces with a `wl_display` owned by SDL can be seen in `tests/testnativewayland.c`,
-and the following is a minimal example of interoperation with Qt 6, with Qt owning the `wl_display`:
-
-```c++
-#include <QApplication>
-#include <QWindow>
-#include <qpa/qplatformnativeinterface.h>
-
-#include <SDL3/SDL.h>
-
-int main(int argc, char *argv[])
-{
-    int ret = -1;
-    int done = 0;
-    SDL_PropertiesID props;
-    SDL_Event e;
-    SDL_Window *sdlWindow = NULL;
-    SDL_Renderer *sdlRenderer = NULL;
-    struct wl_display *display = NULL;
-    struct wl_surface *surface = NULL;
-
-    /* Initialize Qt */
-    QApplication qtApp(argc, argv);
-    QWindow qtWindow;
-
-    /* The windowing system must be Wayland. */
-    if (QApplication::platformName() != "wayland") {
-        goto exit;
-    }
-
-    {
-        /* Get the wl_display object from Qt */
-        QNativeInterface::QWaylandApplication *qtWlApp = qtApp.nativeInterface<QNativeInterface::QWaylandApplication>();
-        display = qtWlApp->display();
-
-        if (!display) {
-            goto exit;
-        }
-    }
-
-    /* Set SDL to use the existing wl_display object from Qt and initialize. */
-    SDL_SetProperty(SDL_GetGlobalProperties(), SDL_PROPERTY_GLOBAL_VIDEO_WAYLAND_WL_DISPLAY_POINTER, display);
-    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
-
-    /* Create a basic, frameless QWindow */
-    qtWindow.setFlags(Qt::FramelessWindowHint);
-    qtWindow.setGeometry(0, 0, 640, 480);
-    qtWindow.show();
-
-    {
-        /* Get the native wl_surface backing resource for the window */
-        QPlatformNativeInterface *qtNative = qtApp.platformNativeInterface();
-        surface = (struct wl_surface *)qtNative->nativeResourceForWindow("surface", &qtWindow);
-
-        if (!surface) {
-            goto exit;
-        }
-    }
-
-    /* Create a window that wraps the wl_surface from the QWindow.
-     * Qt objects should not be flagged as DPI-aware or protocol violations will result.
-     */
-    props = SDL_CreateProperties();
-    SDL_SetProperty(props, SDL_PROPERTY_WINDOW_CREATE_WAYLAND_WL_SURFACE_POINTER, surface);
-    SDL_SetBooleanProperty(props, SDL_PROPERTY_WINDOW_CREATE_OPENGL_BOOLEAN, SDL_TRUE);
-    SDL_SetNumberProperty(props, SDL_PROPERTY_WINDOW_CREATE_WIDTH_NUMBER, 640);
-    SDL_SetNumberProperty(props, SDL_PROPERTY_WINDOW_CREATE_HEIGHT_NUMBER, 480);
-    sdlWindow = SDL_CreateWindowWithProperties(props);
-    SDL_DestroyProperties(props);
-    if (!sdlWindow) {
-        goto exit;
-    }
-
-    /* Create a renderer */
-    sdlRenderer = SDL_CreateRenderer(sdlWindow, NULL, 0);
-    if (!sdlRenderer) {
-        goto exit;
-    }
-
-    /* Draw a blue screen for the window until ESC is pressed or the window is no longer visible. */
-    while (!done) {
-        while (SDL_PollEvent(&e)) {
-            if (e.type == SDL_EVENT_KEY_DOWN && e.key.keysym.sym == SDLK_ESCAPE) {
-                done = 1;
-            }
-        }
-
-        qtApp.processEvents();
-
-        /* Update the backbuffer size if the window scale changed. */
-        qreal scale = qtWindow.devicePixelRatio();
-        SDL_SetWindowSize(sdlWindow, SDL_lround(640. * scale), SDL_lround(480. * scale));
-
-        if (qtWindow.isVisible()) {
-            SDL_SetRenderDrawColor(sdlRenderer, 0, 0, 255, 255);
-            SDL_RenderClear(sdlRenderer);
-            SDL_RenderPresent(sdlRenderer);
-        } else {
-            done = 1;
-        }
-    }
-
-    ret = 0;
-
-exit:
-    /* Cleanup */
-    if (sdlRenderer) {
-        SDL_DestroyRenderer(sdlRenderer);
-    }
-    if (sdlWindow) {
-        SDL_DestroyWindow(sdlWindow);
-    }
-
-    SDL_Quit();
-    return ret;
-}
-```
-

external/CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+
+add_subdirectory(./entt)
+
+add_subdirectory(./solanaceae_util)
+add_subdirectory(./solanaceae_contact)
+add_subdirectory(./solanaceae_message3)
+
+add_subdirectory(./solanaceae_plugin)
+
+add_subdirectory(./toxcore)
+add_subdirectory(./solanaceae_toxcore)
+add_subdirectory(./solanaceae_tox)
+
+add_subdirectory(./sdl)
+add_subdirectory(./imgui)
+
+add_subdirectory(./stb)
+add_subdirectory(./libwebp)
+

external/entt/CMakeLists.txt

@@ -0,0 +1,4 @@
+cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+
+add_subdirectory(./entt EXCLUDE_FROM_ALL)
+

external/entt/entt/.clang-format

@@ -0,0 +1,41 @@
+BasedOnStyle: llvm
+---
+AccessModifierOffset: -4
+AlignEscapedNewlines: DontAlign
+AllowShortBlocksOnASingleLine: Empty
+AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: WithoutElse
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakTemplateDeclarations: Yes
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeTernaryOperators: true
+ColumnLimit: 0
+DerivePointerAlignment: false
+IncludeCategories:
+  - Regex: '<[[:alnum:]_]+>'
+    Priority: 1
+  - Regex: '<(gtest|gmock)/'
+    Priority: 2
+  - Regex: '<[[:alnum:]_./]+>'
+    Priority: 3
+  - Regex: '<entt/'
+    Priority: 4
+  - Regex: '.*'
+    Priority: 5
+IndentPPDirectives: AfterHash
+IndentWidth: 4
+KeepEmptyLinesAtTheStartOfBlocks: false
+Language: Cpp
+PointerAlignment: Right
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: false
+SpaceAroundPointerQualifiers: After
+SpaceBeforeCaseColon: false
+SpaceBeforeCtorInitializerColon: false
+SpaceBeforeInheritanceColon: false
+SpaceBeforeParens: Never
+SpaceBeforeRangeBasedForLoopColon: false
+Standard: Latest
+TabWidth: 4
+UseTab: Never

external/entt/entt/.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: skypjack
+custom: https://www.paypal.me/skypjack

external/entt/entt/.github/workflows/analyzer.yml

@@ -0,0 +1,55 @@
+name: analyzer
+
+on:
+  push:
+    branches:
+      - master
+      - wip
+
+jobs:
+
+  iwyu:
+    timeout-minutes: 30
+
+    env:
+      IWYU: 0.18
+      LLVM: 14
+
+    runs-on: ubuntu-latest
+    continue-on-error: true
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install llvm/clang
+      # see: https://apt.llvm.org/
+      run: |
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+        sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-$LLVM main"
+        sudo apt update
+        sudo apt remove -y "llvm*"
+        sudo apt remove -y "libclang-dev*"
+        sudo apt remove -y "clang*"
+        sudo apt install -y llvm-$LLVM-dev
+        sudo apt install -y libclang-$LLVM-dev
+        sudo apt install -y clang-$LLVM
+    - name: Compile iwyu
+      # see: https://github.com/include-what-you-use/include-what-you-use
+      working-directory: build
+      run: |
+        git clone https://github.com/include-what-you-use/include-what-you-use.git --branch $IWYU --depth 1
+        mkdir include-what-you-use/build
+        cd include-what-you-use/build
+        cmake -DCMAKE_C_COMPILER=clang-$LLVM -DCMAKE_CXX_COMPILER=clang++-$LLVM -DCMAKE_INSTALL_PREFIX=./ ..
+        make -j4
+        bin/include-what-you-use --version
+    - name: Compile tests
+      working-directory: build
+      run: |
+        export PATH=$PATH:${GITHUB_WORKSPACE}/build/include-what-you-use/build/bin
+        cmake -DENTT_BUILD_TESTING=ON \
+              -DENTT_BUILD_BENCHMARK=ON \
+              -DENTT_BUILD_EXAMPLE=ON \
+              -DENTT_BUILD_LIB=ON \
+              -DENTT_BUILD_SNAPSHOT=ON \
+              -DCMAKE_CXX_INCLUDE_WHAT_YOU_USE="include-what-you-use;-Xiwyu;--mapping_file=${GITHUB_WORKSPACE}/entt.imp;-Xiwyu;--no_fwd_decls;-Xiwyu;--verbose=1" ..
+        make -j4

external/entt/entt/.github/workflows/build.yml

@@ -0,0 +1,169 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+
+  linux:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        compiler:
+          - pkg: g++-7
+            exe: g++-7
+          - pkg: g++-8
+            exe: g++-8
+          - pkg: g++-9
+            exe: g++-9
+          - pkg: g++-10
+            exe: g++-10
+          - pkg: clang-8
+            exe: clang++-8
+          - pkg: clang-9
+            exe: clang++-9
+          - pkg: clang-10
+            exe: clang++-10
+          - pkg: clang-11
+            exe: clang++-11
+          - pkg: clang-12
+            exe: clang++-12
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install compiler
+      run: |
+        sudo apt update
+        sudo apt install -y ${{ matrix.compiler.pkg }}
+    - name: Compile tests
+      working-directory: build
+      env:
+        CXX: ${{ matrix.compiler.exe }}
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_BUILD_LIB=ON -DENTT_BUILD_EXAMPLE=ON ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+
+  linux-extra:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        compiler: [g++, clang++]
+        id_type: ["std::uint32_t", "std::uint64_t"]
+        cxx_std: [cxx_std_17, cxx_std_20]
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      env:
+        CXX: ${{ matrix.compiler }}
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_CXX_STD=${{ matrix.cxx_std }} -DENTT_ID_TYPE=${{ matrix.id_type }} ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+
+  windows:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        toolset: [default, v141, v142, clang-cl]
+        include:
+          - toolset: v141
+            toolset_option: -T"v141"
+          - toolset: v142
+            toolset_option: -T"v142"
+          - toolset: clang-cl
+            toolset_option: -T"ClangCl"
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_BUILD_LIB=ON -DENTT_BUILD_EXAMPLE=ON ${{ matrix.toolset_option }} ..
+        cmake --build . -j 4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+
+  windows-extra:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        id_type: ["std::uint32_t", "std::uint64_t"]
+        cxx_std: [cxx_std_17, cxx_std_20]
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_CXX_STD=${{ matrix.cxx_std }} -DENTT_ID_TYPE=${{ matrix.id_type }} ..
+        cmake --build . -j 4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+
+  macos:
+    timeout-minutes: 15
+    runs-on: macOS-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_BUILD_LIB=ON -DENTT_BUILD_EXAMPLE=ON ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+
+  macos-extra:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        id_type: ["std::uint32_t", "std::uint64_t"]
+        cxx_std: [cxx_std_17, cxx_std_20]
+
+    runs-on: macOS-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_CXX_STD=${{ matrix.cxx_std }} -DENTT_ID_TYPE=${{ matrix.id_type }} ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4

external/entt/entt/.github/workflows/coverage.yml

@@ -0,0 +1,38 @@
+name: coverage
+
+on: [push, pull_request]
+
+jobs:
+
+  codecov:
+    timeout-minutes: 15
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      env:
+        CXXFLAGS: "--coverage -fno-inline"
+        CXX: g++
+      run: |
+        cmake -DENTT_BUILD_TESTING=ON -DENTT_BUILD_LIB=ON -DENTT_BUILD_EXAMPLE=ON ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4
+    - name: Collect data
+      working-directory: build
+      run: |
+        sudo apt install lcov
+        lcov -c -d . -o coverage.info
+        lcov -l coverage.info
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v2
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: build/coverage.info
+        name: EnTT
+        fail_ci_if_error: true

external/entt/entt/.github/workflows/deploy.yml

@@ -0,0 +1,39 @@
+name: deploy
+
+on:
+  release:
+    types: published
+
+jobs:
+
+  homebrew-entt:
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+
+    env:
+      GH_REPO: homebrew-entt
+      FORMULA: entt.rb
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Clone repository
+      working-directory: build
+      env:
+        PERSONAL_ACCESS_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+      run: git clone https://$GITHUB_ACTOR:$PERSONAL_ACCESS_TOKEN@github.com/$GITHUB_ACTOR/$GH_REPO.git
+    - name: Prepare formula
+      working-directory: build
+      run: |
+        cd $GH_REPO
+        curl "https://github.com/${{ github.repository }}/archive/${{ github.ref }}.tar.gz" --location --fail --silent --show-error --output archive.tar.gz
+        sed -i -e '/url/s/".*"/"'$(echo "https://github.com/${{ github.repository }}/archive/${{ github.ref }}.tar.gz" | sed -e 's/[\/&]/\\&/g')'"/' $FORMULA
+        sed -i -e '/sha256/s/".*"/"'$(openssl sha256 archive.tar.gz | cut -d " " -f 2)'"/' $FORMULA
+    - name: Update remote
+      working-directory: build
+      run: |
+        cd $GH_REPO
+        git config --local user.email "action@github.com"
+        git config --local user.name "$GITHUB_ACTOR"
+        git add $FORMULA
+        git commit -m "Update to ${{ github.ref }}"
+        git push origin master

external/entt/entt/.github/workflows/sanitizer.yml

@@ -0,0 +1,31 @@
+name: sanitizer
+
+on: [push, pull_request]
+
+jobs:
+
+  clang:
+    timeout-minutes: 15
+
+    strategy:
+      matrix:
+        compiler: [clang++]
+        id_type: ["std::uint32_t", "std::uint64_t"]
+        cxx_std: [cxx_std_17, cxx_std_20]
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Compile tests
+      working-directory: build
+      env:
+        CXX: ${{ matrix.compiler }}
+      run: |
+        cmake -DENTT_USE_SANITIZER=ON -DENTT_BUILD_TESTING=ON -DENTT_BUILD_LIB=ON -DENTT_BUILD_EXAMPLE=ON -DENTT_CXX_STD=${{ matrix.cxx_std }} -DENTT_ID_TYPE=${{ matrix.id_type }} ..
+        make -j4
+    - name: Run tests
+      working-directory: build
+      env:
+        CTEST_OUTPUT_ON_FAILURE: 1
+      run: ctest --timeout 30 -C Debug -j4

external/entt/entt/.gitignore

@@ -0,0 +1,13 @@
+# Conan
+conan/test_package/build
+
+# IDEs
+*.user
+.idea
+.vscode
+.vs
+CMakeSettings.json
+cpp.hint
+
+# Bazel
+/bazel-*

external/entt/entt/AUTHORS

@@ -0,0 +1,56 @@
+# Author
+
+skypjack
+
+# Contributors
+
+alexames
+BenediktConze
+bjadamson
+ceeac
+ColinH
+corystegel
+Croydon
+cschreib
+cugone
+dbacchet
+dBagrat
+djarek
+DNKpp
+DonKult
+drglove
+eliasdaler
+erez-o
+eugeneko
+gale83
+ghost
+grdowns
+Green-Sky
+Innokentiy-Alaytsev
+Kerndog73
+Koward
+Lawrencemm
+markand
+mhammerc
+Milerius
+Minimonium
+morbo84
+m-waka
+netpoetica
+NixAJ
+Oortonaut
+Paolo-Oliverio
+pgruenbacher
+prowolf
+Qix-
+stefanofiorentino
+suVrik
+szunhammer
+The5-1
+vblanco20-1
+willtunnels
+WizardIke
+WoLfulus 
+w1th0utnam3
+xissburg
+zaucy

external/entt/entt/BUILD.bazel

@@ -0,0 +1,14 @@
+_msvc_copts = ["/std:c++17"]	
+_gcc_copts = ["-std=c++17"]
+
+cc_library(
+    name = "entt",
+    visibility = ["//visibility:public"],
+    strip_include_prefix = "src",
+    hdrs = glob(["src/**/*.h", "src/**/*.hpp"]),
+    copts = select({
+      "@bazel_tools//src/conditions:windows": _msvc_copts,
+      "@bazel_tools//src/conditions:windows_msvc": _msvc_copts,
+      "//conditions:default": _gcc_copts,
+    }),
+)

external/entt/entt/CMakeLists.txt

@@ -0,0 +1,325 @@
+#
+# EnTT
+#
+
+cmake_minimum_required(VERSION 3.12.4)
+
+#
+# Read project version
+#
+
+set(ENTT_VERSION_REGEX "#define ENTT_VERSION_.*[ \t]+(.+)")
+file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/src/entt/config/version.h" ENTT_VERSION REGEX ${ENTT_VERSION_REGEX})
+list(TRANSFORM ENTT_VERSION REPLACE ${ENTT_VERSION_REGEX} "\\1")
+string(JOIN "." ENTT_VERSION ${ENTT_VERSION})
+
+#
+# Project configuration
+#
+
+project(
+    EnTT
+    VERSION ${ENTT_VERSION}
+    DESCRIPTION "Gaming meets modern C++ - a fast and reliable entity-component system (ECS) and much more"
+    HOMEPAGE_URL "https://github.com/skypjack/entt"
+    LANGUAGES C CXX
+)
+
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Debug)
+endif()
+
+message(VERBOSE "*")
+message(VERBOSE "* ${PROJECT_NAME} v${PROJECT_VERSION} (${CMAKE_BUILD_TYPE})")
+message(VERBOSE "* Copyright (c) 2017-2022 Michele Caini <michele.caini@gmail.com>")
+message(VERBOSE "*")
+
+#
+# CMake stuff
+#
+
+list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
+
+#
+# Compiler stuff
+#
+
+option(ENTT_USE_LIBCPP "Use libc++ by adding -stdlib=libc++ flag if available." OFF)
+option(ENTT_USE_SANITIZER "Enable sanitizers by adding -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined flags if available." OFF)
+
+if(ENTT_USE_LIBCPP)
+    if(NOT WIN32)
+        include(CheckCXXSourceCompiles)
+        include(CMakePushCheckState)
+
+        cmake_push_check_state()
+
+        set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -stdlib=libc++")
+
+        check_cxx_source_compiles("
+            #include<type_traits>
+            int main() { return std::is_same_v<int, char>; }
+        " ENTT_HAS_LIBCPP)
+
+        cmake_pop_check_state()
+    endif()
+
+    if(NOT ENTT_HAS_LIBCPP)
+        message(VERBOSE "The option ENTT_USE_LIBCPP is set but libc++ is not available. The flag will not be added to the target.")
+    endif()
+endif()
+
+if(ENTT_USE_SANITIZER)
+    if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
+        set(ENTT_HAS_SANITIZER TRUE CACHE BOOL "" FORCE)
+        mark_as_advanced(ENTT_HAS_SANITIZER)
+    endif()
+
+    if(NOT ENTT_HAS_SANITIZER)
+        message(VERBOSE "The option ENTT_USE_SANITIZER is set but sanitizer support is not available. The flags will not be added to the target.")
+    endif()
+endif()
+
+#
+# Add EnTT target
+#
+
+option(ENTT_INCLUDE_HEADERS "Add all EnTT headers to the EnTT target." OFF)
+option(ENTT_INCLUDE_NATVIS "Add EnTT natvis files to the EnTT target." OFF)
+
+if(ENTT_INCLUDE_NATVIS)
+    if(MSVC)
+        set(ENTT_HAS_NATVIS TRUE CACHE BOOL "" FORCE)
+        mark_as_advanced(ENTT_HAS_NATVIS)
+    endif()
+
+    if(NOT ENTT_HAS_NATVIS)
+        message(VERBOSE "The option ENTT_INCLUDE_NATVIS is set but natvis files are not supported. They will not be added to the target.")
+    endif()
+endif()
+
+include(GNUInstallDirs)
+
+add_library(EnTT INTERFACE)
+add_library(EnTT::EnTT ALIAS EnTT)
+
+target_include_directories(
+    EnTT
+    INTERFACE
+        $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+
+target_compile_features(EnTT INTERFACE cxx_std_17)
+
+if(ENTT_INCLUDE_HEADERS)
+    target_sources(
+        EnTT
+        INTERFACE
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/config/config.h>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/config/macro.h>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/config/version.h>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/container/dense_map.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/container/dense_set.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/container/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/algorithm.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/any.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/attribute.h>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/compressed_pair.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/enum.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/family.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/hashed_string.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/ident.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/iterator.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/memory.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/monostate.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/tuple.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/type_info.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/type_traits.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/core/utility.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/component.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/entity.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/group.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/handle.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/helper.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/observer.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/organizer.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/registry.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/runtime_view.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/snapshot.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/sparse_set.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/storage.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/storage_mixin.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entity/view.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/graph/adjacency_matrix.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/graph/dot.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/graph/flow.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/graph/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/locator/locator.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/adl_pointer.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/container.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/context.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/factory.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/meta.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/node.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/pointer.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/policy.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/range.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/resolve.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/template.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/type_traits.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/meta/utility.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/platform/android-ndk-r17.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/poly/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/poly/poly.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/process/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/process/process.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/process/scheduler.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/resource/cache.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/resource/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/resource/loader.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/resource/resource.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/signal/delegate.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/signal/dispatcher.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/signal/emitter.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/signal/fwd.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/signal/sigh.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/entt.hpp>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/src/entt/fwd.hpp>
+    )
+endif()
+
+if(ENTT_HAS_NATVIS)
+    target_sources(
+        EnTT
+        INTERFACE
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/config.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/container.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/core.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/entity.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/graph.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/locator.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/meta.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/platform.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/poly.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/process.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/resource.natvis>
+            $<BUILD_INTERFACE:${EnTT_SOURCE_DIR}/natvis/entt/signal.natvis>
+    )
+endif()
+
+if(ENTT_HAS_SANITIZER)
+    target_compile_options(EnTT INTERFACE $<$<CONFIG:Debug>:-fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined>)
+    target_link_libraries(EnTT INTERFACE $<$<CONFIG:Debug>:-fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined>)
+endif()
+
+if(ENTT_HAS_LIBCPP)
+    target_compile_options(EnTT BEFORE INTERFACE -stdlib=libc++)
+endif()
+
+#
+# Install pkg-config file
+#
+
+include(JoinPaths)
+
+set(EnTT_PKGCONFIG ${CMAKE_CURRENT_BINARY_DIR}/entt.pc)
+
+join_paths(EnTT_PKGCONFIG_INCLUDEDIR "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
+
+configure_file(
+    ${EnTT_SOURCE_DIR}/cmake/in/entt.pc.in
+    ${EnTT_PKGCONFIG}
+    @ONLY
+)
+
+install(
+    FILES ${EnTT_PKGCONFIG}
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+)
+
+#
+# Install EnTT
+#
+
+include(CMakePackageConfigHelpers)
+
+install(
+    TARGETS EnTT
+    EXPORT EnTTTargets
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+write_basic_package_version_file(
+    EnTTConfigVersion.cmake
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY AnyNewerVersion
+)
+
+configure_package_config_file(
+    ${EnTT_SOURCE_DIR}/cmake/in/EnTTConfig.cmake.in
+    EnTTConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/EnTT/cmake
+)
+
+export(
+    EXPORT EnTTTargets
+    FILE ${CMAKE_CURRENT_BINARY_DIR}/EnTTTargets.cmake
+    NAMESPACE EnTT::
+)
+
+install(
+    EXPORT EnTTTargets
+    FILE EnTTTargets.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/EnTT/cmake
+    NAMESPACE EnTT::
+)
+
+install(
+    FILES
+        ${PROJECT_BINARY_DIR}/EnTTConfig.cmake
+        ${PROJECT_BINARY_DIR}/EnTTConfigVersion.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/EnTT/cmake
+)
+
+install(DIRECTORY src/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+
+export(PACKAGE EnTT)
+
+#
+# Tests
+#
+
+option(ENTT_BUILD_TESTING "Enable building tests." OFF)
+
+if(ENTT_BUILD_TESTING)
+    option(ENTT_FIND_GTEST_PACKAGE "Enable finding gtest package." OFF)
+    option(ENTT_BUILD_BENCHMARK "Build benchmark." OFF)
+    option(ENTT_BUILD_EXAMPLE "Build examples." OFF)
+    option(ENTT_BUILD_LIB "Build lib tests." OFF)
+    option(ENTT_BUILD_SNAPSHOT "Build snapshot test with Cereal." OFF)
+
+    set(ENTT_ID_TYPE std::uint32_t CACHE STRING "Type of identifiers to use for the tests")
+    set(ENTT_CXX_STD cxx_std_17 CACHE STRING "C++ standard revision to use for the tests")
+
+    include(CTest)
+    enable_testing()
+    add_subdirectory(test)
+endif()
+
+#
+# Documentation
+#
+
+option(ENTT_BUILD_DOCS "Enable building with documentation." OFF)
+
+if(ENTT_BUILD_DOCS)
+    find_package(Doxygen 1.8)
+
+    if(DOXYGEN_FOUND)
+        add_subdirectory(docs)
+    endif()
+endif()

external/entt/entt/CONTRIBUTING.md

@@ -0,0 +1,43 @@
+# Contributing
+
+First of all, thank you very much for taking the time to contribute to the
+`EnTT` library.<br/>
+How to do it mostly depends on the type of contribution:
+
+* If you have a question, **please** ensure there isn't already an answer for
+  you by searching on GitHub under
+  [issues](https://github.com/skypjack/entt/issues). Do not forget to search
+  also through the closed ones. If you are unable to find a proper answer, feel
+  free to [open a new issue](https://github.com/skypjack/entt/issues/new).
+  Usually, questions are marked as such and closed in a few days.
+
+* If you want to fix a typo in the inline documentation or in the README file,
+  if you want to add some new sections or if you want to help me with the
+  language by reviewing what I wrote so far (I'm not a native speaker after
+  all), **please** open a new
+  [pull request](https://github.com/skypjack/entt/pulls) with your changes.
+
+* If you found a bug, **please** ensure there isn't already an answer for you by
+  searching on GitHub under [issues](https://github.com/skypjack/entt/issues).
+  If you are unable to find an open issue addressing the problem, feel free to
+  [open a new one](https://github.com/skypjack/entt/issues/new). **Please**, do
+  not forget to carefully describe how to reproduce the problem, then add all
+  the information about the system on which you are experiencing it and point
+  out the version of `EnTT` you are using (tag or commit).
+
+* If you found a bug and you wrote a patch to fix it, open a new
+  [pull request](https://github.com/skypjack/entt/pulls) with your code.
+  **Please**, add some tests to avoid regressions in future if possible, it
+  would be really appreciated. Note that the `EnTT` library has a
+  [coverage at 100%](https://coveralls.io/github/skypjack/entt?branch=master)
+  (at least it was at 100% at the time I wrote this file) and this is the reason
+  for which you can be confident with using it in a production environment.
+
+* If you want to propose a new feature and you know how to code it, **please**
+  do not issue directly a pull request. Before to do it,
+  [create a new issue](https://github.com/skypjack/entt/issues/new) to discuss
+  your proposal. Other users could be interested in your idea and the discussion
+  that will follow can refine it and therefore give us a better solution.
+
+* If you want to request a new feature, I'm available for hiring. Take a look at
+  [my profile](https://github.com/skypjack) and feel free to write me.

external/entt/entt/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017-2022 Michele Caini, author of EnTT
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copy of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copy or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

external/entt/entt/README.md

@@ -0,0 +1,431 @@
+![EnTT: Gaming meets modern C++](https://user-images.githubusercontent.com/1812216/103550016-90752280-4ea8-11eb-8667-12ed2219e137.png)
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+[![Build Status](https://github.com/skypjack/entt/workflows/build/badge.svg)](https://github.com/skypjack/entt/actions)
+[![Coverage](https://codecov.io/gh/skypjack/entt/branch/master/graph/badge.svg)](https://codecov.io/gh/skypjack/entt)
+[![Try online](https://img.shields.io/badge/try-online-brightgreen)](https://godbolt.org/z/zxW73f)
+[![Documentation](https://img.shields.io/badge/docs-docsforge-blue)](http://entt.docsforge.com/)
+[![Gitter chat](https://badges.gitter.im/skypjack/entt.png)](https://gitter.im/skypjack/entt)
+[![Discord channel](https://img.shields.io/discord/707607951396962417?logo=discord)](https://discord.gg/5BjPWBd)
+[![Donate](https://img.shields.io/badge/donate-paypal-blue.svg)](https://www.paypal.me/skypjack)
+
+> `EnTT` has been a dream so far, we haven't found a single bug to date and it's
+> super easy to work with
+>
+> -- Every EnTT User Ever
+
+`EnTT` is a header-only, tiny and easy to use library for game programming and
+much more written in **modern C++**.<br/>
+[Among others](https://github.com/skypjack/entt/wiki/EnTT-in-Action), it's used
+in [**Minecraft**](https://minecraft.net/en-us/attribution/) by Mojang, the
+[**ArcGIS Runtime SDKs**](https://developers.arcgis.com/arcgis-runtime/) by Esri
+and the amazing [**Ragdoll**](https://ragdolldynamics.com/).<br/>
+If you don't see your project in the list, please open an issue, submit a PR or
+add the [#entt](https://github.com/topics/entt) tag to your _topics_! :+1:
+
+---
+
+Do you want to **keep up with changes** or do you have a **question** that
+doesn't require you to open an issue?<br/>
+Join the [gitter channel](https://gitter.im/skypjack/entt) and the
+[discord server](https://discord.gg/5BjPWBd), meet other users like you. The
+more we are, the better for everyone.<br/>
+Don't forget to check the
+[FAQs](https://github.com/skypjack/entt/wiki/Frequently-Asked-Questions) and the
+[wiki](https://github.com/skypjack/entt/wiki) too. Your answers may already be
+there.
+
+Do you want to support `EnTT`? Consider becoming a
+[**sponsor**](https://github.com/users/skypjack/sponsorship).
+Many thanks to [these people](https://skypjack.github.io/sponsorship/) and
+**special** thanks to:
+
+[![mojang](https://user-images.githubusercontent.com/1812216/106253145-67ca1980-6217-11eb-9c0b-d93561b37098.png)](https://mojang.com)
+[![imgly](https://user-images.githubusercontent.com/1812216/106253726-271ed000-6218-11eb-98e0-c9c681925770.png)](https://img.ly/)
+
+# Table of Contents
+
+* [Introduction](#introduction)
+  * [Code Example](#code-example)
+  * [Motivation](#motivation)
+  * [Performance](#performance)
+* [Integration](#integration)
+  * [Requirements](#requirements)
+  * [CMake](#cmake)
+  * [Natvis support](#natvis-support)
+  * [Packaging Tools](#packaging-tools)
+  * [pkg-config](#pkg-config)
+* [Documentation](#documentation)
+* [Tests](#tests)
+* [EnTT in Action](#entt-in-action)
+* [Contributors](#contributors)
+* [License](#license)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+The entity-component-system (also known as _ECS_) is an architectural pattern
+used mostly in game development. For further details:
+
+* [Entity Systems Wiki](http://entity-systems.wikidot.com/)
+* [Evolve Your Hierarchy](http://cowboyprogramming.com/2007/01/05/evolve-your-heirachy/)
+* [ECS on Wikipedia](https://en.wikipedia.org/wiki/Entity%E2%80%93component%E2%80%93system)
+
+This project started off as a pure entity-component system. Over time the
+codebase has grown as more and more classes and functionalities were added.<br/>
+Here is a brief, yet incomplete list of what it offers today:
+
+* Built-in **RTTI system** mostly similar to the standard one.
+* A `constexpr` utility for human-readable **resource names**.
+* Minimal **configuration system** built using the monostate pattern.
+* Incredibly fast **entity-component system** with its own _pay for what you
+  use_ policy, unconstrained component types with optional pointer stability and
+  hooks for storage customization.
+* Views and groups to iterate entities and components and allow different access
+  patterns, from **perfect SoA** to fully random.
+* A lot of **facilities** built on top of the entity-component system to help
+  the users and avoid reinventing the wheel.
+* General purpose **execution graph builder** for optimal scheduling.
+* The smallest and most basic implementation of a **service locator** ever seen.
+* A built-in, non-intrusive and macro-free runtime **reflection system**.
+* **Static polymorphism** made simple and within everyone's reach.
+* A few homemade containers, like a sparse set based **hash map**.
+* A **cooperative scheduler** for processes of any type.
+* All that is needed for **resource management** (cache, loaders, handles).
+* Delegates, **signal handlers** and a tiny event dispatcher.
+* A general purpose **event emitter** as a CRTP idiom based class template.
+* And **much more**! Check out the
+  [**wiki**](https://github.com/skypjack/entt/wiki).
+
+Consider this list a work in progress as well as the project. The whole API is
+fully documented in-code for those who are brave enough to read it.<br/>
+Please, do note that all tools are also DLL-friendly now and run smoothly across
+boundaries.
+
+One thing known to most is that `EnTT` is also used in **Minecraft**.<br/>
+Given that the game is available literally everywhere, I can confidently say 
+that the library has been sufficiently tested on every platform that can come to 
+mind.
+
+## Code Example
+
+```cpp
+#include <entt/entt.hpp>
+
+struct position {
+    float x;
+    float y;
+};
+
+struct velocity {
+    float dx;
+    float dy;
+};
+
+void update(entt::registry &registry) {
+    auto view = registry.view<const position, velocity>();
+
+    // use a callback
+    view.each([](const auto &pos, auto &vel) { /* ... */ });
+
+    // use an extended callback
+    view.each([](const auto entity, const auto &pos, auto &vel) { /* ... */ });
+
+    // use a range-for
+    for(auto [entity, pos, vel]: view.each()) {
+        // ...
+    }
+
+    // use forward iterators and get only the components of interest
+    for(auto entity: view) {
+        auto &vel = view.get<velocity>(entity);
+        // ...
+    }
+}
+
+int main() {
+    entt::registry registry;
+
+    for(auto i = 0u; i < 10u; ++i) {
+        const auto entity = registry.create();
+        registry.emplace<position>(entity, i * 1.f, i * 1.f);
+        if(i % 2 == 0) { registry.emplace<velocity>(entity, i * .1f, i * .1f); }
+    }
+
+    update(registry);
+}
+```
+
+## Motivation
+
+I started developing `EnTT` for the _wrong_ reason: my goal was to design an
+entity-component system to beat another well known open source library both in
+terms of performance and possibly memory usage.<br/>
+In the end, I did it, but it wasn't very satisfying. Actually it wasn't
+satisfying at all. The fastest and nothing more, fairly little indeed. When I
+realized it, I tried hard to keep intact the great performance of `EnTT` and to
+add all the features I wanted to see in *my own library* at the same time.
+
+Nowadays, `EnTT` is finally what I was looking for: still faster than its
+_competitors_, lower memory usage in the average case, a really good API and an
+amazing set of features. And even more, of course.
+
+## Performance
+
+The proposed entity-component system is incredibly fast to iterate entities and
+components, this is a fact. Some compilers make a lot of optimizations because
+of how `EnTT` works, some others aren't that good. In general, if we consider
+real world cases, `EnTT` is somewhere between a bit and much faster than many of
+the other solutions around, although I couldn't check them all for obvious
+reasons.
+
+If you are interested, you can compile the `benchmark` test in release mode (to
+enable compiler optimizations, otherwise it would make little sense) by setting
+the `ENTT_BUILD_BENCHMARK` option of `CMake` to `ON`, then evaluate yourself
+whether you're satisfied with the results or not.
+
+Honestly I got tired of updating the README file whenever there is an
+improvement.<br/>
+There are already a lot of projects out there that use `EnTT` as a basis for
+comparison (this should already tell you a lot). Many of these benchmarks are
+completely wrong, many others are simply incomplete, good at omitting some
+information and using the wrong function to compare a given feature. Certainly
+there are also good ones but they age quickly if nobody updates them, especially
+when the library they are dealing with is actively developed.
+
+The choice to use `EnTT` should be based on its carefully designed API, its
+set of features and the general performance, **not** because some single
+benchmark shows it to be the fastest tool available.
+
+In the future I'll likely try to get even better performance while still adding
+new features, mainly for fun.<br/>
+If you want to contribute and/or have suggestions, feel free to make a PR or
+open an issue to discuss your idea.
+
+# Integration
+
+`EnTT` is a header-only library. This means that including the `entt.hpp` header
+is enough to include the library as a whole and use it. For those who are
+interested only in the entity-component system, consider to include the sole
+`entity/registry.hpp` header instead.<br/>
+It's a matter of adding the following line to the top of a file:
+
+```cpp
+#include <entt/entt.hpp>
+```
+
+Use the line below to include only the entity-component system instead:
+
+```cpp
+#include <entt/entity/registry.hpp>
+```
+
+Then pass the proper `-I` argument to the compiler to add the `src` directory to
+the include paths.
+
+## Requirements
+
+To be able to use `EnTT`, users must provide a full-featured compiler that
+supports at least C++17.<br/>
+The requirements below are mandatory to compile the tests and to extract the
+documentation:
+
+* `CMake` version 3.7 or later.
+* `Doxygen` version 1.8 or later.
+
+Alternatively, [Bazel](https://bazel.build) is also supported as a build system
+(credits to [zaucy](https://github.com/zaucy) who offered to maintain it).<br/>
+In the documentation below I'll still refer to `CMake`, this being the official
+build system of the library.
+
+## CMake
+
+To use `EnTT` from a `CMake` project, just link an existing target to the
+`EnTT::EnTT` alias.<br/>
+The library offers everything you need for locating (as in `find_package`),
+embedding (as in `add_subdirectory`), fetching (as in `FetchContent`) or using
+it in many of the ways that you can think of and that involve `CMake`.<br/>
+Covering all possible cases would require a treaty and not a simple README file,
+but I'm confident that anyone reading this section also knows what it's about
+and can use `EnTT` from a `CMake` project without problems.
+
+## Natvis support
+
+When using `CMake`, just enable the option `ENTT_INCLUDE_NATVIS` and enjoy
+it.<br/>
+Otherwise, most of the tools are covered via Natvis and all files can be found
+in the `natvis` directory, divided by module.<br/>
+If you spot errors or have suggestions, any contribution is welcome!
+
+## Packaging Tools
+
+`EnTT` is available for some of the most known packaging tools. In particular:
+
+* [`Conan`](https://github.com/conan-io/conan-center-index), the C/C++ Package
+  Manager for Developers.
+
+* [`vcpkg`](https://github.com/Microsoft/vcpkg), Microsoft VC++ Packaging
+  Tool.<br/>
+  You can download and install `EnTT` in just a few simple steps:
+
+  ```
+  $ git clone https://github.com/Microsoft/vcpkg.git
+  $ cd vcpkg
+  $ ./bootstrap-vcpkg.sh
+  $ ./vcpkg integrate install
+  $ vcpkg install entt
+  ```
+
+  Or you can use the `experimental` feature to test the latest changes:
+
+  ```
+  vcpkg install entt[experimental] --head
+  ```
+
+  The `EnTT` port in `vcpkg` is kept up to date by Microsoft team members and
+  community contributors.<br/>
+  If the version is out of date, please
+  [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the
+  `vcpkg` repository.
+
+* [`Homebrew`](https://github.com/skypjack/homebrew-entt), the missing package
+  manager for macOS.<br/>
+  Available as a homebrew formula. Just type the following to install it:
+
+  ```
+  brew install skypjack/entt/entt
+  ```
+
+* [`build2`](https://build2.org), build toolchain for developing and packaging C
+  and C++ code.<br/>
+  In order to use the [`entt`](https://cppget.org/entt) package in a `build2`
+  project, add the following line or a similar one to the `manifest` file:
+
+  ```
+  depends: entt ^3.0.0
+  ```
+
+  Also check that the configuration refers to a valid repository, so that the
+  package can be found by `build2`:
+
+  * [`cppget.org`](https://cppget.org), the open-source community central
+    repository, accessible as `https://pkg.cppget.org/1/stable`.
+
+  * [Package source repository](https://github.com/build2-packaging/entt):
+    accessible as either `https://github.com/build2-packaging/entt.git` or
+    `ssh://git@github.com/build2-packaging/entt.git`.
+    Feel free to [report issues](https://github.com/build2-packaging/entt) with
+    this package.
+
+  Both can be used with `bpkg add-repo` or added in a project
+  `repositories.manifest`. See the official
+  [documentation](https://build2.org/build2-toolchain/doc/build2-toolchain-intro.xhtml#guide-repositories)
+  for more details.
+
+Consider this list a work in progress and help me to make it longer if you like.
+
+## pkg-config
+
+`EnTT` also supports `pkg-config` (for some definition of _supports_ at least).
+A suitable file called `entt.pc` is generated and installed in a proper
+directory when running `CMake`.<br/>
+This should also make it easier to use with tools such as `Meson` or similar.
+
+# Documentation
+
+The documentation is based on [doxygen](http://www.doxygen.nl/). To build it:
+
+    $ cd build
+    $ cmake .. -DENTT_BUILD_DOCS=ON
+    $ make
+
+The API reference will be created in HTML format within the directory
+`build/docs/html`. To navigate it with your favorite browser:
+
+    $ cd build
+    $ your_favorite_browser docs/html/index.html
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+The same version is also available [online](https://skypjack.github.io/entt/)
+for the latest release, that is the last stable tag. If you are looking for
+something more pleasing to the eye, consider reading the nice-looking version
+available on [docsforge](https://entt.docsforge.com/): same documentation, much
+more pleasant to read.<br/>
+Moreover, there exists a [wiki](https://github.com/skypjack/entt/wiki) dedicated
+to the project where users can find all related documentation pages.
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Tests
+
+To compile and run the tests, `EnTT` requires *googletest*.<br/>
+`cmake` will download and compile the library before compiling anything else.
+In order to build the tests, set the `CMake` option `ENTT_BUILD_TESTING` to
+`ON`.
+
+To build the most basic set of tests:
+
+* `$ cd build`
+* `$ cmake -DENTT_BUILD_TESTING=ON ..`
+* `$ make`
+* `$ make test`
+
+Note that benchmarks are not part of this set.
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# EnTT in Action
+
+`EnTT` is widely used in private and commercial applications. I cannot even
+mention most of them because of some signatures I put on some documents time
+ago. Fortunately, there are also people who took the time to implement open
+source projects based on `EnTT` and did not hold back when it came to
+documenting them.
+
+[Here](https://github.com/skypjack/entt/wiki/EnTT-in-Action) you can find an
+incomplete list of games, applications and articles that can be used as a
+reference.
+
+If you know of other resources out there that are about `EnTT`, feel free to
+open an issue or a PR and I'll be glad to add them to the list.
+
+# Contributors
+
+Requests for features, PRs, suggestions ad feedback are highly appreciated.
+
+If you find you can help and want to contribute to the project with your
+experience or you do want to get part of the project for some other reason, feel
+free to contact me directly (you can find the mail in the
+[profile](https://github.com/skypjack)).<br/>
+I can't promise that each and every contribution will be accepted, but I can
+assure that I'll do my best to take them all as soon as possible.
+
+If you decide to participate, please see the guidelines for
+[contributing](CONTRIBUTING.md) before to create issues or pull
+requests.<br/>
+Take also a look at the
+[contributors list](https://github.com/skypjack/entt/blob/master/AUTHORS) to
+know who has participated so far.
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# License
+
+Code and documentation Copyright (c) 2017-2022 Michele Caini.<br/>
+Colorful logo Copyright (c) 2018-2021 Richard Caseres.
+
+Code released under
+[the MIT license](https://github.com/skypjack/entt/blob/master/LICENSE).<br/>
+Documentation released under
+[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).<br/>
+All logos released under
+[CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).

external/entt/entt/TODO

@@ -0,0 +1,27 @@
+* debugging tools (#60): the issue online already contains interesting tips on this, look at it
+* work stealing job system (see #100) + mt scheduler based on const awareness for types
+
+EXAMPLES
+* filter on runtime values/variables (not only types)
+* support to polymorphic types (see #859)
+
+DOC:
+* storage<void>
+* custom storage/view
+* examples (and credits) from @alanjfs :)
+* update entity doc when the storage based model is in place
+
+TODO (high prio):
+* remove the static storage from the const assure in the registry
+
+WIP:
+* get rid of observers, storage based views made them pointless - document alternatives
+* add storage getter for filters to views and groups
+* exploit the tombstone mechanism to allow enabling/disabling entities (see bump, compact and clear for further details)
+* basic_storage::bind for cross-registry setups (see and remove todo from entity_copy.cpp)
+* process scheduler: reviews, use free lists internally
+* dedicated entity storage, in-place O(1) release/destroy for non-orphaned entities, out-of-sync model
+* entity-only and exclude-only views (both solved with entity storage and storage<void>)
+* custom allocators all over (registry, ...)
+* add test for maximum number of entities reached
+* deprecate non-owning groups in favor of owning views and view packs, introduce lazy owning views

external/entt/entt/WORKSPACE

@@ -0,0 +1 @@
+workspace(name = "com_github_skypjack_entt")

external/entt/entt/build/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

external/entt/entt/cmake/in/EnTTConfig.cmake.in

@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+
+set(EnTT_VERSION "@PROJECT_VERSION@")
+include("${CMAKE_CURRENT_LIST_DIR}/EnTTTargets.cmake")
+check_required_components("@PROJECT_NAME@")

external/entt/entt/cmake/in/entt.pc.in

@@ -0,0 +1,8 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+includedir=@EnTT_PKGCONFIG_INCLUDEDIR@
+
+Name: EnTT
+Description: Gaming meets modern C++
+Url: https://github.com/skypjack/entt
+Version: @ENTT_VERSION@
+Cflags: -I${includedir}

external/entt/entt/cmake/modules/JoinPaths.cmake

@@ -0,0 +1,23 @@
+# This module provides function for joining paths
+# known from most languages
+#
+# SPDX-License-Identifier: (MIT OR CC0-1.0)
+# Copyright 2020 Jan Tojnar
+# https://github.com/jtojnar/cmake-snips
+#
+# Modelled after Python<6F>s os.path.join
+# https://docs.python.org/3.7/library/os.path.html#os.path.join
+# Windows not supported
+function(join_paths joined_path first_path_segment)
+    set(temp_path "${first_path_segment}")
+    foreach(current_segment IN LISTS ARGN)
+        if(NOT ("${current_segment}" STREQUAL ""))
+            if(IS_ABSOLUTE "${current_segment}")
+                set(temp_path "${current_segment}")
+            else()
+                set(temp_path "${temp_path}/${current_segment}")
+            endif()
+        endif()
+    endforeach()
+    set(${joined_path} "${temp_path}" PARENT_SCOPE)
+endfunction()

external/entt/entt/conan/build.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+from cpt.packager import ConanMultiPackager
+import os
+
+if __name__ == "__main__":
+    username = os.getenv("GITHUB_ACTOR")
+    tag_version = os.getenv("GITHUB_REF")
+    tag_package = os.getenv("GITHUB_REPOSITORY")
+    login_username = os.getenv("CONAN_LOGIN_USERNAME")
+    package_version = tag_version.replace("refs/tags/v", "")
+    package_name = tag_package.replace("skypjack/", "")
+    reference = "{}/{}".format(package_name, package_version)
+    channel = os.getenv("CONAN_CHANNEL", "stable")
+    upload = os.getenv("CONAN_UPLOAD")
+    stable_branch_pattern = os.getenv("CONAN_STABLE_BRANCH_PATTERN", r"v\d+\.\d+\.\d+.*")
+    test_folder = os.getenv("CPT_TEST_FOLDER", os.path.join("conan", "test_package"))
+    upload_only_when_stable = os.getenv("CONAN_UPLOAD_ONLY_WHEN_STABLE", True)
+    disable_shared = os.getenv("CONAN_DISABLE_SHARED_BUILD", "False")
+
+    builder = ConanMultiPackager(username=username,
+                                 reference=reference,
+                                 channel=channel,
+                                 login_username=login_username,
+                                 upload=upload,
+                                 stable_branch_pattern=stable_branch_pattern,
+                                 upload_only_when_stable=upload_only_when_stable,
+                                 test_folder=test_folder)
+    builder.add()
+
+    filtered_builds = []
+    for settings, options, env_vars, build_requires, reference in builder.items:
+        if disable_shared == "False" or not options["{}:shared".format(package_name)]:
+             filtered_builds.append([settings, options, env_vars, build_requires])
+    builder.builds = filtered_builds
+
+    builder.run()

external/entt/entt/conan/ci/build.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+set -x
+
+conan user
+python conan/build.py

external/entt/entt/conan/ci/install.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -e
+set -x
+
+pip install -U conan_package_tools conan

external/entt/entt/conan/test_package/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.7.2)
+project(test_package)
+
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})

external/entt/entt/conan/test_package/conanfile.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from conans import ConanFile, CMake
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        bin_path = os.path.join("bin", "test_package")
+        self.run(bin_path, run_environment=True)

external/entt/entt/conan/test_package/test_package.cpp

@@ -0,0 +1,56 @@
+#include <entt/entt.hpp>
+#include <cstdint>
+
+struct position {
+    float x;
+    float y;
+};
+
+struct velocity {
+    float dx;
+    float dy;
+};
+
+void update(entt::registry &registry) {
+    auto view = registry.view<position, velocity>();
+
+    for(auto entity: view) {
+        // gets only the components that are going to be used ...
+
+        auto &vel = view.get<velocity>(entity);
+
+        vel.dx = 0.;
+        vel.dy = 0.;
+
+        // ...
+    }
+}
+
+void update(std::uint64_t dt, entt::registry &registry) {
+    registry.view<position, velocity>().each([dt](auto &pos, auto &vel) {
+        // gets all the components of the view at once ...
+
+        pos.x += vel.dx * dt;
+        pos.y += vel.dy * dt;
+
+        // ...
+    });
+}
+
+int main() {
+    entt::registry registry;
+    std::uint64_t dt = 16;
+
+    for(auto i = 0; i < 10; ++i) {
+        auto entity = registry.create();
+        registry.emplace<position>(entity, i * 1.f, i * 1.f);
+        if(i % 2 == 0) { registry.emplace<velocity>(entity, i * .1f, i * .1f); }
+    }
+
+    update(dt, registry);
+    update(registry);
+
+    // ...
+
+    return EXIT_SUCCESS;
+}

external/entt/entt/conanfile.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+from conans import ConanFile
+
+
+class EnttConan(ConanFile):
+    name = "entt"
+    description = "Gaming meets modern C++ - a fast and reliable entity-component system (ECS) and much more "
+    topics = ("conan," "entt", "gaming", "entity", "ecs")
+    url = "https://github.com/skypjack/entt"
+    homepage = url
+    author = "Michele Caini <michele.caini@gmail.com>"
+    license = "MIT"
+    exports = ["LICENSE"]
+    exports_sources = ["src/*"]
+    no_copy_source = True
+
+    def package(self):
+        self.copy(pattern="LICENSE", dst="licenses")
+        self.copy(pattern="*", dst="include", src="src", keep_path=True)
+
+    def package_info(self):
+        if not self.in_local_cache:
+            self.cpp_info.includedirs = ["src"]
+
+    def package_id(self):
+        self.info.header_only()

external/entt/entt/docs/CMakeLists.txt

@@ -0,0 +1,40 @@
+#
+# Doxygen configuration (documentation)
+#
+
+set(DOXY_DEPS_DIRECTORY ${EnTT_SOURCE_DIR}/deps)
+set(DOXY_SOURCE_DIRECTORY ${EnTT_SOURCE_DIR}/src)
+set(DOXY_DOCS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+set(DOXY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+
+configure_file(doxy.in doxy.cfg @ONLY)
+
+add_custom_target(
+    docs ALL
+    COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxy.cfg
+    WORKING_DIRECTORY ${EnTT_SOURCE_DIR}
+    VERBATIM
+    SOURCES
+        dox/extra.dox
+        md/config.md
+        md/container.md
+        md/core.md
+        md/entity.md
+        md/faq.md
+        md/lib.md
+        md/links.md
+        md/locator.md
+        md/meta.md
+        md/poly.md
+        md/process.md
+        md/reference.md
+        md/resource.md
+        md/signal.md
+        md/unreal.md
+        doxy.in
+)
+
+install(
+    DIRECTORY ${DOXY_OUTPUT_DIRECTORY}/html
+    DESTINATION share/${PROJECT_NAME}-${PROJECT_VERSION}/
+)

external/entt/entt/docs/dox/extra.dox

@@ -0,0 +1,5 @@
+/**
+ * @namespace entt
+ *
+ * @brief `EnTT` default namespace.
+ */

external/entt/entt/docs/md/config.md

@@ -0,0 +1,121 @@
+# Crash Course: configuration
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [Definitions](#definitions)
+  * [ENTT_NOEXCEPTION](#entt_noexception)
+  * [ENTT_USE_ATOMIC](#entt_use_atomic)
+  * [ENTT_ID_TYPE](#entt_id_type)
+  * [ENTT_SPARSE_PAGE](#entt_sparse_page)
+  * [ENTT_PACKED_PAGE](#entt_packed_page)
+  * [ENTT_ASSERT](#entt_assert)
+    * [ENTT_ASSERT_CONSTEXPR](#entt_assert_constexpr)
+    * [ENTT_DISABLE_ASSERT](#entt_disable_assert)
+  * [ENTT_NO_ETO](#entt_no_eto)
+  * [ENTT_STANDARD_CPP](#entt_standard_cpp)
+
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+`EnTT` has become almost completely customizable over time, in many
+respects. These variables are just one of the many ways to customize how it
+works.<br/>
+In the vast majority of cases, users will have no interest in changing the
+default parameters. For all other cases, the list of possible configurations
+with which it's possible to adjust the behavior of the library at runtime can be
+found below.
+
+# Definitions
+
+All options are intended as parameters to the compiler (or user-defined macros
+within the compilation units, if preferred).<br/>
+Each parameter can result in internal library definitions. It's not recommended
+to try to also modify these definitions, since there is no guarantee that they
+will remain stable over time unlike the options below.
+
+## ENTT_NOEXCEPTION
+
+Define this variable without assigning any value to it to turn off exception
+handling in `EnTT`.<br/>
+This is roughly equivalent to setting the compiler flag `-fno-exceptions` but is
+also limited to this library only.
+
+## ENTT_USE_ATOMIC
+
+In general, `EnTT` doesn't offer primitives to support multi-threading. Many of
+the features can be split over multiple threads without any explicit control and
+the user is the one who knows if a synchronization point is required.<br/>
+However, some features aren't easily accessible to users and are made
+thread-safe by means of this definition.
+
+## ENTT_ID_TYPE
+
+`entt::id_type` is directly controlled by this definition and widely used within
+the library.<br/>
+By default, its type is `std::uint32_t`. However, users can define a different
+default type if necessary.
+
+## ENTT_SPARSE_PAGE
+
+It's known that the ECS module of `EnTT` is based on _sparse sets_. What is less
+known perhaps is that the sparse arrays are paged to reduce memory usage.<br/>
+Default size of pages (that is, the number of elements they contain) is 4096 but
+users can adjust it if appropriate. In all case, the chosen value **must** be a
+power of 2.
+
+## ENTT_PACKED_PAGE
+
+As it happens with sparse arrays, packed arrays are also paginated. However, in
+this case the aim isn't to reduce memory usage but to have pointer stability
+upon component creation.<br/>
+Default size of pages (that is, the number of elements they contain) is 1024 but
+users can adjust it if appropriate. In all case, the chosen value **must** be a
+power of 2.
+
+## ENTT_ASSERT
+
+For performance reasons, `EnTT` doesn't use exceptions or any other control
+structures. In fact, it offers many features that result in undefined behavior
+if not used correctly.<br/>
+To get around this, the library relies on a lot of asserts for the purpose of
+detecting errors in debug builds. By default, it uses `assert` internally. Users
+are allowed to overwrite its behavior by setting this variable.
+
+### ENTT_ASSERT_CONSTEXPR
+
+Usually, an assert within a `constexpr` function isn't a big deal. However, in
+case of extreme customizations, it might be useful to differentiate.<br/>
+For this purpose, `EnTT` introduces an admittedly badly named variable to make
+the job easier in this regard. By default, this variable forwards its arguments
+to `ENTT_ASSERT`.
+
+### ENTT_DISABLE_ASSERT
+
+Assertions may in turn affect performance to an extent when enabled. Whether
+`ENTT_ASSERT` and `ENTT_ASSERT_CONSTEXPR` are redefined or not, all asserts can
+be disabled at once by means of this definition.<br/>
+Note that `ENTT_DISABLE_ASSERT` takes precedence over the redefinition of the
+other variables and is therefore meant to disable all controls no matter what.
+
+## ENTT_NO_ETO
+
+In order to reduce memory consumption and increase performance, empty types are
+never instantiated nor stored by the ECS module of `EnTT`.<br/>
+Use this variable to treat these types like all others and therefore to create a
+dedicated storage for them.
+
+## ENTT_STANDARD_CPP
+
+`EnTT` mixes non-standard language features with others that are perfectly
+compliant to offer some of its functionalities.<br/>
+This definition prevents the library from using non-standard techniques, that
+is, functionalities that aren't fully compliant with the standard C++.<br/>
+While there are no known portability issues at the time of this writing, this
+should make the library fully portable anyway if needed.

external/entt/entt/docs/md/container.md

@@ -0,0 +1,67 @@
+# Crash Course: containers
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [Containers](#containers)
+  * [Dense map](#dense-map)
+  * [Dense set](#dense-set)
+
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+The standard C++ library offers a wide range of containers and it's really
+difficult to do better (although it's very easy to do worse, as many examples
+available online demonstrate).<br/>
+`EnTT` doesn't try in any way to replace what is offered by the standard. Quite
+the opposite, given the widespread use that is made of standard containers.<br/>
+However, the library also tries to fill a gap in features and functionality by
+making available some containers initially developed for internal use.
+
+This section of the library is likely to grow larger over time. However, for the
+moment it's quite small and mainly aimed at satisfying some internal needs.<br/>
+For all containers made available, full test coverage and stability over time is
+guaranteed as usual.
+
+# Containers
+
+## Dense map
+
+The dense map made available in `EnTT` is a hash map that aims to return a
+packed array of elements, so as to reduce the number of jumps in memory during
+iterations.<br/>
+The implementation is based on _sparse sets_ and each bucket is identified by an
+implicit list within the packed array itself.
+
+The interface is very close to its counterpart in the standard library, that is,
+`std::unordered_map`.<br/>
+However, both local and non-local iterators returned by a dense map belong to
+the input iterator category although they respectively model the concepts of a
+_forward iterator_ type and a _random access iterator_ type.<br/>
+This is because they return a pair of references rather than a reference to a
+pair. In other words, dense maps return a so called _proxy iterator_ the value
+type of which is:
+
+* `std::pair<const Key &, Type &>` for non-const iterator types.
+* `std::pair<const Key &, const Type &>` for const iterator types.
+
+This is quite different from what any standard library map returns and should be
+taken into account when looking for a drop-in replacement.
+
+## Dense set
+
+The dense set made available in `EnTT` is a hash set that aims to return a
+packed array of elements, so as to reduce the number of jumps in memory during
+iterations.<br/>
+The implementation is based on _sparse sets_ and each bucket is identified by an
+implicit list within the packed array itself.
+
+The interface is in all respects similar to its counterpart in the standard
+library, that is, `std::unordered_set`.<br/>
+Therefore, there is no need to go into the API description.

external/entt/entt/docs/md/faq.md

@@ -0,0 +1,215 @@
+# Frequently Asked Questions
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [FAQ](#faq)
+  * [Why is my debug build on Windows so slow?](#why-is-my-debug-build-on-windows-so-slow)
+  * [How can I represent hierarchies with my components?](#how-can-i-represent-hierarchies-with-my-components)
+  * [Custom entity identifiers: yay or nay?](#custom-entity-identifiers-yay-or-nay)
+  * [Warning C4307: integral constant overflow](#warning-C4307-integral-constant-overflow)
+  * [Warning C4003: the min, the max and the macro](#warning-C4003-the-min-the-max-and-the-macro)
+  * [The standard and the non-copyable types](#the-standard-and-the-non-copyable-types)
+  * [Which functions trigger which signals](#which-functions-trigger-which-signals)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+This is a constantly updated section where I'm trying to put the answers to the
+most frequently asked questions.<br/>
+If you don't find your answer here, there are two cases: nobody has done it yet
+or this section needs updating. In both cases, you can
+[open a new issue](https://github.com/skypjack/entt/issues/new) or enter either
+the [gitter channel](https://gitter.im/skypjack/entt) or the
+[discord server](https://discord.gg/5BjPWBd) to ask for help.<br/>
+Probably someone already has an answer for you and we can then integrate this
+part of the documentation.
+
+# FAQ
+
+## Why is my debug build on Windows so slow?
+
+`EnTT` is an experimental project that I also use to keep me up-to-date with the
+latest revision of the language and the standard library. For this reason, it's
+likely that some classes you're working with are using standard containers under
+the hood.<br/>
+Unfortunately, it's known that the standard containers aren't particularly
+performing in debugging (the reasons for this go beyond this document) and are
+even less so on Windows apparently. Fortunately this can also be mitigated a
+lot, achieving good results in many cases.
+
+First of all, there are two things to do in a Windows project:
+
+* Disable the [`/JMC`](https://docs.microsoft.com/cpp/build/reference/jmc)
+  option (_Just My Code_ debugging), available starting with Visual Studio 2017
+  version 15.8.
+
+* Set the [`_ITERATOR_DEBUG_LEVEL`](https://docs.microsoft.com/cpp/standard-library/iterator-debug-level)
+  macro to 0. This will disable checked iterators and iterator debugging.
+
+Moreover, set the `ENTT_DISABLE_ASSERT` variable or redefine the `ENTT_ASSERT`
+macro to disable internal debug checks in `EnTT`:
+
+```cpp
+#define ENTT_ASSERT(...) ((void)0)
+```
+
+These asserts are introduced to help the users but they require to access to the
+underlying containers and therefore risk ruining the performance in some cases.
+
+With these changes, debug performance should increase enough in most cases. If
+you want something more, you can also switch to an optimization level `O0` or
+preferably `O1`.
+
+## How can I represent hierarchies with my components?
+
+This is one of the first questions that anyone makes when starting to work with
+the entity-component-system architectural pattern.<br/>
+There are several approaches to the problem and the best one depends mainly on
+the real problem one is facing. In all cases, how to do it doesn't strictly
+depend on the library in use, but the latter certainly allows or not different
+techniques depending on how the data are laid out.
+
+I tried to describe some of the approaches that fit well with the model of
+`EnTT`. [This](https://skypjack.github.io/2019-06-25-ecs-baf-part-4/) is the
+first post of a series that tries to _explore_ the problem. More will probably
+come in future.<br/>
+In addition, `EnTT` also offers the possibility to create stable storage types
+and therefore have pointer stability for one, all or some components. This is by
+far the most convenient solution when it comes to creating hierarchies and
+whatnot. See the documentation for the ECS part of the library and in particular
+what concerns the `component_traits` class for further details.
+
+## Custom entity identifiers: yay or nay?
+
+Custom entity identifiers are definitely a good idea in two cases at least:
+
+* If `std::uint32_t` isn't large enough for your purposes, since this is the
+  underlying type of `entt::entity`.
+
+* If you want to avoid conflicts when using multiple registries.
+
+Identifiers can be defined through enum classes and class types that define an
+`entity_type` member of type `std::uint32_t` or `std::uint64_t`.<br/>
+In fact, this is a definition equivalent to that of `entt::entity`:
+
+```cpp
+enum class entity: std::uint32_t {};
+```
+
+There is no limit to the number of identifiers that can be defined.
+
+## Warning C4307: integral constant overflow
+
+According to [this](https://github.com/skypjack/entt/issues/121) issue, using a
+hashed string under VS (toolset v141) could generate a warning.<br/>
+First of all, I want to reassure you: it's expected and harmless. However, it
+can be annoying.
+
+To suppress it and if you don't want to suppress all the other warnings as well,
+here is a workaround in the form of a macro:
+
+```cpp
+#if defined(_MSC_VER)
+#define HS(str) __pragma(warning(suppress:4307)) entt::hashed_string{str}
+#else
+#define HS(str) entt::hashed_string{str}
+#endif
+```
+
+With an example of use included:
+
+```cpp
+constexpr auto identifier = HS("my/resource/identifier");
+```
+
+Thanks to [huwpascoe](https://github.com/huwpascoe) for the courtesy.
+
+## Warning C4003: the min, the max and the macro
+
+On Windows, a header file defines two macros `min` and `max` which may result in
+conflicts with their counterparts in the standard library and therefore in
+errors during compilation.
+
+It's a pretty big problem but fortunately it's not a problem of `EnTT` and there
+is a fairly simple solution to it.<br/>
+It consists in defining the `NOMINMAX` macro before including any other header
+so as to get rid of the extra definitions:
+
+```cpp
+#define NOMINMAX
+```
+
+Please refer to [this](https://github.com/skypjack/entt/issues/96) issue for
+more details.
+
+## The standard and the non-copyable types
+
+`EnTT` uses internally the trait `std::is_copy_constructible_v` to check if a
+component is actually copyable. However, this trait doesn't really check whether
+a type is actually copyable. Instead, it just checks that a suitable copy
+constructor and copy operator exist.<br/>
+This can lead to surprising results due to some idiosyncrasies of the standard.
+
+For example, `std::vector` defines a copy constructor that is conditionally
+enabled depending on whether the value type is copyable or not. As a result,
+`std::is_copy_constructible_v` returns true for the following specialization:
+
+```cpp
+struct type {
+    std::vector<std::unique_ptr<action>> vec;
+};
+```
+
+However, the copy constructor is effectively disabled upon specialization.
+Therefore, trying to assign an instance of this type to an entity may trigger a
+compilation error.<br/>
+As a workaround, users can mark the type explicitly as non-copyable. This also
+suppresses the implicit generation of the move constructor and operator, which
+will therefore have to be defaulted accordingly:
+
+```cpp
+struct type {
+    type(const type &) = delete;
+    type(type &&) = default;
+
+    type & operator=(const type &) = delete;
+    type & operator=(type &&) = default;
+
+    std::vector<std::unique_ptr<action>> vec;
+};
+```
+
+Note that aggregate initialization is also disabled as a consequence.<br/>
+Fortunately, this type of trick is quite rare. The bad news is that there is no
+way to deal with it at the library level, this being due to the design of the
+language. On the other hand, the fact that the language itself also offers a way
+to mitigate the problem makes it manageable.
+
+## Which functions trigger which signals
+
+The `registry` class offers three signals that are emitted following specific
+operations. Maybe not everyone knows what these operations are, though.<br/>
+If this isn't clear, below you can find a _vademecum_ for this purpose:
+
+* `on_created` is invoked when a component is first added (neither modified nor 
+  replaced) to an entity.
+
+* `on_update` is called whenever an existing component is modified or replaced.
+
+* `on_destroyed` is called when a component is explicitly or implicitly removed 
+  from an entity.
+
+Among the most controversial functions can be found `emplace_or_replace` and
+`destroy`. However, following the above rules, it's quite simple to know what 
+will happen.<br/>
+In the first case, `on_created` is invoked if the entity has not the component,
+otherwise the latter is replaced and therefore `on_update` is triggered. As for
+the second case, components are removed from their entities and thus freed when
+they are recycled. It means that `on_destroyed` is triggered for every component 
+owned by the entity that is destroyed.

external/entt/entt/docs/md/graph.md

@@ -0,0 +1,299 @@
+# Crash Course: graph
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [Data structures](#data-structures)
+  * [Adjacency matrix](#adjacency-matrix)
+  * [Graphviz dot language](#graphviz-dot-language)
+* [Flow builder](#flow-builder)
+  * [Tasks and resources](#tasks-and-resources)
+  * [Fake resources and order of execution](#fake-resources-and-order-of-execution)
+  * [Sync points](#sync-points)
+  * [Execution graph](#execution-graph)
+
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+`EnTT` doesn't aim to offer everything one needs to work with graphs. Therefore,
+anyone looking for this in the _graph_ submodule will be disappointed.<br/>
+Quite the opposite is true. This submodule is minimal and contains only the data
+structures and algorithms strictly necessary for the development of some tools
+such as the _flow builder_.
+
+# Data structures
+
+As anticipated in the introduction, the aim isn't to offer all possible data
+structures suitable for representing and working with graphs. Many will likely
+be added or refined over time, however I want to discourage anyone expecting
+tight scheduling on the subject.<br/>
+The data structures presented in this section are mainly useful for the
+development and support of some tools which are also part of the same submodule.
+
+## Adjacency matrix
+
+The adjacency matrix is designed to represent either a directed or an undirected
+graph:
+
+```cpp
+entt::adjacency_matrix<entt::directed_tag> adjacency_matrix{};
+```
+
+The `directed_tag` type _creates_ the graph as directed. There is also an
+`undirected_tag` counterpart which creates it as undirected.<br/>
+The interface deviates slightly from the typical double indexing of C and offers
+an API that is perhaps more familiar to a C++ programmer. Therefore, the access
+and modification of an element will take place via the `contains`, `insert` and
+`erase` functions rather than a double call to an `operator[]`:
+
+```cpp
+if(adjacency_matrix.contains(0u, 1u)) {
+    adjacency_matrix.erase(0u, 1u);
+} else {
+    adjacency_matrix.insert(0u, 1u);
+}
+```
+
+Both `insert` and` erase` are idempotent functions which have no effect if the
+element already exists or has already been deleted.<br/>
+The first one returns an `std::pair` containing the iterator to the element and
+a boolean value indicating whether the element has been inserted or was already
+present. The second one instead returns the number of deleted elements (0 or 1).
+
+An adjacency matrix must be initialized with the number of elements (vertices)
+when constructing it but can also be resized later using the `resize` function:
+
+```cpp
+entt::adjacency_matrix<entt::directed_tag> adjacency_matrix{3u};
+```
+
+To visit all vertices, the class offers a function named `vertices` that returns
+an iterable object suitable for the purpose:
+
+```cpp
+for(auto &&vertex: adjacency_matrix.vertices()) {
+    // ...
+}
+```
+
+Note that the same result can be obtained with the following snippet, since the
+vertices are unsigned integral values:
+
+```cpp
+for(auto last = adjacency_matrix.size(), pos = {}; pos < last; ++pos) {
+    // ...
+}
+```
+
+As for visiting the edges, a few functions are available.<br/>
+When the purpose is to visit all the edges of a given adjacency matrix, the
+`edges` function returns an iterable object that can be used to get them as
+pairs of vertices:
+
+```cpp
+for(auto [lhs, rhs]: adjacency_matrix.edges()) {
+    // ...
+}
+```
+
+On the other hand, if the goal is to visit all the in- or out-edges of a given
+vertex, the `in_edges` and `out_edges` functions are meant for that:
+
+```cpp
+for(auto [lhs, rhs]: adjacency_matrix.out_edges(3u)) {
+    // ...
+}
+```
+
+As might be expected, these functions expect the vertex to visit (that is, to
+return the in- or out-edges for) as an argument.<br/>
+Finally, the adjacency matrix is an allocator-aware container and offers most of
+the functionality one would expect from this type of containers, such as `clear`
+or 'get_allocator` and so on.
+
+## Graphviz dot language
+
+As it's one of the most popular formats, the library offers minimal support for
+converting a graph to a Graphviz dot snippet.<br/>
+The simplest way is to pass both an output stream and a graph to the `dot`
+function:
+
+```cpp
+std::ostringstream output{};
+entt::dot(output, adjacency_matrix);
+```
+
+However, there is also the option of providing a callback to which the vertices
+are passed and which can be used to add (`dot`) properties to the output from
+time to time:
+
+```cpp
+std::ostringstream output{};
+entt::dot(output, adjacency_matrix, [](auto &output, auto vertex) {
+    out << "label=\"v\"" << vertex << ",shape=\"box\"";
+});
+```
+
+This second mode is particularly convenient when the user wants to associate
+data managed externally to the graph being converted.
+
+# Flow builder
+
+A flow builder is used to create execution graphs from tasks and resources.<br/>
+The implementation is as generic as possible and doesn't bind to any other part
+of the library.
+
+This class is designed as a sort of _state machine_ to which a specific task is
+attached for which the resources accessed in read-only or read-write mode are
+specified.<br/>
+Most of the functions in the API also return the flow builder itself, according
+to what is the common sense API when it comes to builder classes.
+
+Once all tasks have been registered and resources assigned to them, an execution
+graph in the form of an adjacency matrix is returned to the user.<br/>
+This graph contains all the tasks assigned to the flow builder in the form of
+_vertices_. The _vertex_ itself can be used as an index to get the identifier
+passed during registration.
+
+## Tasks and resources
+
+Although these terms are used extensively in the documentation, the flow builder
+has no real concept of tasks and resources.<br/>
+This class works mainly with _identifiers_, that is, values of type `id_type`.
+That is, both tasks and resources are identified by integral values.<br/>
+This allows not to couple the class itself to the rest of the library or to any
+particular data structure. On the other hand, it requires the user to keep track
+of the association between identifiers and operations or actual data.
+
+Once a flow builder has been created (which requires no constructor arguments),
+the first thing to do is to bind a task. This will indicate to the builder who
+intends to consume the resources that will be specified immediately after:
+
+```cpp
+entt::flow builder{};
+builder.bind("task_1"_hs);
+```
+
+Note that the example uses the `EnTT` hashed string to generate an identifier
+for the task.<br/>
+Indeed, the use of `id_type` as an identifier type is not by accident. In fact,
+it matches well with the internal hashed string class. Moreover, it's also the
+same type returned by the hash function of the internal RTTI system, in case the
+user wants to rely on that.<br/>
+However, being an integral value, it leaves the user full freedom to rely on his
+own tools if he deems it necessary.
+
+Once a task has been associated with the flow builder, it can be assigned
+read-only or read-write resources, as appropriate:
+
+```cpp
+builder
+    .bind("task_1"_hs)
+        .ro("resource_1"_hs)
+        .ro("resource_2"_hs)
+    .bind("task_2"_hs)
+        .rw("resource_2"_hs)
+```
+
+As mentioned, many functions return the builder itself and it's therefore easy
+to concatenate the different calls.<br/>
+Also in the case of resources, these are identified by numeric values of type
+`id_type`. As above, the choice is not entirely random. This goes well with the
+tools offered by the library while leaving room for maximum flexibility.
+
+Finally, both the `ro` and` rw` functions also offer an overload that accepts a
+pair of iterators, so that one can pass a range of resources in one go.
+
+## Fake resources and order of execution
+
+The flow builder doesn't offer the ability to specify when a task should execute
+before or after another task.<br/>
+In fact, the order of _registration_ on the resources also determines the order
+in which the tasks are processed during the generation of the execution graph.
+
+However, there is a way to force the execution order of two processes.<br/>
+Briefly, since accessing a resource in opposite modes requires sequential rather
+than parallel scheduling, it's possible to make use of fake resources to force
+the order execution:
+
+```cpp
+builder
+    .bind("task_1"_hs)
+        .ro("resource_1"_hs)
+        .rw("fake"_hs)
+    .bind("task_2"_hs)
+        .ro("resource_2"_hs)
+        .ro("fake"_hs)
+    .bind("task_3"_hs)
+        .ro("resource_2"_hs)
+        .ro("fake"_hs)
+```
+
+This snippet forces the execution of `task_2` and `task_3` **after** `task_1`.
+This is due to the fact that the latter sets a read-write requirement on a fake
+resource that the other tasks also want to access in read-only mode.<br/>
+Similarly, it's possible to force a task to run after a certain group:
+
+```cpp
+builder
+    .bind("task_1"_hs)
+        .ro("resource_1"_hs)
+        .ro("fake"_hs)
+    .bind("task_2"_hs)
+        .ro("resource_1"_hs)
+        .ro("fake"_hs)
+    .bind("task_3"_hs)
+        .ro("resource_2"_hs)
+        .rw("fake"_hs)
+```
+
+In this case, since there are a number of processes that want to read a specific
+resource, they will do so in parallel by forcing `task_3` to run after all the
+others tasks.
+
+## Sync points
+
+Sometimes it's useful to assign the role of _sync point_ to a node.<br/>
+Whether it accesses new resources or is simply a watershed, the procedure for
+assigning this role to a vertex is always the same: first it's tied to the flow
+builder, then the `sync` function is invoked:
+
+```cpp
+builder.bind("sync_point"_hs).sync();
+```
+
+The choice to assign an _identity_ to this type of nodes lies in the fact that,
+more often than not, they also perform operations on resources.<br/>
+If this isn't the case, it will still be possible to create no-op vertices to
+which empty tasks are assigned.
+
+## Execution graph
+
+Once both the resources and their consumers have been properly registered, the
+purpose of this tool is to generate an execution graph that takes into account
+all specified constraints to return the best scheduling for the vertices:
+
+```cpp
+entt::adjacency_matrix<entt::directed_tag> graph = builder.graph();
+```
+
+The search for the main vertices, that is those without in-edges, is usually the
+first thing required:
+
+```cpp
+for(auto &&vertex: graph) {
+    if(auto in_edges = graph.in_edges(vertex); in_edges.begin() == in_edges.end()) {
+        // ...
+    }
+}
+```
+
+Starting from them, using the other functions appropriately (such as `out_edges`
+to retrieve the children of a given task or `edges` to access their identifiers)
+it will be possible to instantiate an execution graph.

external/entt/entt/docs/md/lib.md

@@ -0,0 +1,99 @@
+# Push EnTT across boundaries
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Working across boundaries](#working-across-boundaries)
+  * [Smooth until proven otherwise](#smooth-until-proven-otherwise)
+  * [Meta context](#meta-context)
+  * [Memory management](#memory-management)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Working across boundaries
+
+`EnTT` has historically had a limit when used across boundaries on Windows in
+general and on GNU/Linux when default visibility was set to hidden. The
+limitation was mainly due to a custom utility used to assign unique, sequential
+identifiers with different types.<br/>
+Fortunately, nowadays using `EnTT` across boundaries is much easier.
+
+## Smooth until proven otherwise
+
+Many classes in `EnTT` make extensive use of type erasure for their purposes.
+This isn't a problem on itself (in fact, it's the basis of an API so convenient
+to use). However, a way is needed to recognize the objects whose type has been
+erased on the other side of a boundary.<br/>
+The `type_hash` class template is how identifiers are generated and thus made
+available to the rest of the library. In general, this class doesn't arouse much
+interest. The only exception is when a conflict between identifiers occurs
+(definitely uncommon though) or when the default solution proposed by `EnTT`
+isn't suitable for the user's purposes.<br/>
+The section dedicated to `type_info` contains all the details to get around the
+issue in a concise and elegant way. Please refer to the specific documentation.
+
+When working with linked libraries, compile definitions `ENTT_API_EXPORT` and
+`ENTT_API_IMPORT` can be used where there is a need to import or export symbols,
+so as to make everything work nicely across boundaries.<br/>
+On the other hand, everything should run smoothly when working with plugins or
+shared libraries that don't export any symbols.
+
+For anyone who needs more details, the test suite contains multiple examples
+covering the most common cases (see the `lib` directory for all details).<br/>
+It goes without saying that it's impossible to cover **all** possible cases.
+However, what is offered should hopefully serve as a basis for all of them.
+
+## Meta context
+
+The runtime reflection system deserves a special mention when it comes to using
+it across boundaries.<br/>
+Since it's linked already to a static context to which the elements are attached
+and different contexts don't relate to each other, they must be _shared_ to
+allow the use of meta types across boundaries.
+
+Fortunately, sharing a context is also trivial to do. First of all, the local
+one is acquired in the main space:
+
+```cpp
+auto handle = entt::locator<entt::meta_ctx>::handle();
+```
+
+Then, it's passed to the receiving space that sets it as its default context,
+thus discarding or storing aside the local one:
+
+```cpp
+entt::locator<entt::meta_ctx>::reset(handle);
+```
+
+From now on, both spaces refer to the same context and on it are attached all
+new meta types, no matter where they are created.<br/>
+Note that resetting the main context doesn't also propagate changes across
+boundaries. In other words, resetting a context results in the decoupling of the
+two sides and therefore a divergence in the contents.
+
+## Memory Management
+
+There is another subtle problem due to memory management that can lead to
+headaches.<br/>
+It can occur where there are pools of objects (such as components or events)
+dynamically created on demand. This is usually not a problem when working with
+linked libraries that rely on the same dynamic runtime. However, it can occur in
+the case of plugins or statically linked runtimes.
+
+As an example, imagine creating an instance of `registry` in the main executable
+and sharing it with a plugin. If the latter starts working with a component that
+is unknown to the former, a dedicated pool is created within the registry on
+first use.<br/>
+As one can guess, this pool is instantiated on a different side of the boundary
+from the `registry`. Therefore, the instance is now managing memory from
+different spaces and this can quickly lead to crashes if not properly addressed.
+
+To overcome the risk, it's recommended to use well-defined interfaces that make
+fundamental types pass through the boundaries, isolating the instances of the
+`EnTT` classes from time to time and as appropriate.<br/>
+Refer to the test suite for some examples, read the documentation available
+online about this type of issues or consult someone who has already had such
+experiences to avoid problems.

external/entt/entt/docs/md/links.md

@@ -0,0 +1,266 @@
+# EnTT in Action
+
+`EnTT` is widely used in private and commercial applications. I cannot even
+mention most of them because of some signatures I put on some documents time
+ago. Fortunately, there are also people who took the time to implement open
+source projects based on `EnTT` and didn't hold back when it came to documenting
+them.
+
+Below an incomplete list of games, applications and articles that can be used as
+a reference. Where I put the word _apparently_ means that the use of `EnTT` is
+documented but the authors didn't make explicit announcements or contacted me
+directly.
+
+I hope this list can grow much more in the future:
+
+* Games:
+  * [Minecraft](https://minecraft.net/en-us/attribution/) by
+    [Mojang](https://mojang.com/): of course, **that** Minecraft, see the
+    open source attributions page for more details.
+  * [Minecraft Earth](https://www.minecraft.net/en-us/about-earth) by
+    [Mojang](https://mojang.com/): an augmented reality game for mobile, that
+    lets users bring Minecraft into the real world.
+  * [Ember Sword](https://embersword.com/): a modern Free-to-Play MMORPG with a
+    player-driven economy, a classless combat system, and scarce, tradable
+    cosmetic collectibles.
+  * Apparently [Diablo II: Resurrected](https://diablo2.blizzard.com/) by
+    [Blizzard](https://www.blizzard.com/): monsters, heroes, items, spells, all
+    resurrected. Thanks unknown insider.
+  * [Apparently](https://www.youtube.com/watch?v=P8xvOA3ikrQ&t=1105s)
+    [Call of Duty: Vanguard](https://www.callofduty.com/vanguard) by
+    [Sledgehammer Games](https://www.sledgehammergames.com/): I can neither
+    confirm nor deny but there is a license I know in the credits.
+  * Apparently [D&D Dark Alliance](https://darkalliance.wizards.com) by
+    [Wizards of the Coast](https://company.wizards.com): your party, their
+    funeral.
+  * [TiltedOnline](https://github.com/tiltedphoques/TiltedOnline) by
+    [Tilted Phoques](https://github.com/tiltedphoques): Skyrim and Fallout 4 mod
+    to play online.
+  * [Antkeeper](https://github.com/antkeeper/antkeeper-source): an ant colony
+    simulation [game](https://antkeeper.com/).
+  * [Openblack](https://github.com/openblack/openblack): open source
+    reimplementation of the game _Black & White_ (2001).
+  * [Land of the Rair](https://github.com/LandOfTheRair/core2): the new backend
+    of [a retro-style MUD](https://rair.land/) for the new age.
+  * [Face Smash](https://play.google.com/store/apps/details?id=com.gamee.facesmash):
+    a game to play with your face.
+  * [EnTT Pacman](https://github.com/Kerndog73/EnTT-Pacman): an example of how
+    to make Pacman with `EnTT`.
+  * [Wacman](https://github.com/carlfindahl/wacman): a pacman clone with OpenGL.
+  * [Classic Tower Defence](https://github.com/kerndog73/Classic-Tower-Defence):
+    a tiny little tower defence game featuring a homemade font.
+    [Check it out](https://indi-kernick.itch.io/classic-tower-defence).
+  * [The Machine](https://github.com/Kerndog73/The-Machine): a box pushing
+    puzzler with logic gates and other cool stuff.
+    [Check it out](https://indi-kernick.itch.io/the-machine-web-version).
+  * [EnTTPong](https://github.com/DomRe/EnttPong): a basic game made to showcase
+    different parts of `EnTT` and C++17.
+  * [Randballs](https://github.com/gale93/randballs): simple `SFML` and `EnTT`
+    playground.
+  * [EnTT Tower Defense](https://github.com/Daivuk/tddod): a data oriented tower
+    defense example.
+  * [EnTT Breakout](https://github.com/vblanco20-1/entt-breakout): simple
+    example of a breakout game, using `SDL` and `EnTT`.
+  * [Arcade puzzle game with EnTT](https://github.com/MasonRG/ArcadePuzzleGame):
+    arcade puzzle game made in C++ using the `SDL2` and `EnTT` libraries.
+  * [Snake with EnTT](https://github.com/MasonRG/SnakeGame): simple snake game
+    made in C++ with the `SDL2` and `EnTT` libraries.
+  * [Mirrors lasers and robots](https://github.com/guillaume-haerinck/imac-tower-defense):
+    a small tower defense game based on mirror orientation.
+  * [PopHead](https://github.com/SPC-Some-Polish-Coders/PopHead/): 2D, Zombie,
+    RPG game made from scratch in C++.
+  * [Robotligan](https://github.com/Trisslotten/robotligan): multiplayer
+    football game.
+  * [DungeonSlayer](https://github.com/alohaeee/DungeonSlayer): 2D game made
+    from scratch in C++.
+  * [3DGame](https://github.com/kwarkGorny/3DGame): 2.5D top-down space shooter.
+  * [Pulcher](https://github.com/AODQ/pulcher): 2D cross-platform game inspired
+    by Quake.
+  * [Destroid](https://github.com/tyrannicaltoucan/destroid): _one-bazillionth_
+    arcade game about shooting dirty rocks in space, inspired by Asteroids.
+  * [Wanderer](https://github.com/albin-johansson/wanderer): a 2D exploration
+    based indie game.
+  * [Spelunky<EFBFBD> Classic remake](https://github.com/dbeef/spelunky-psp): a truly
+    multiplatform experience with a rewrite from scratch.
+  * [CubbyTower](https://github.com/utilForever/CubbyTower): a simple tower
+    defense game using C++ with Entity Component System (ECS).
+  * [Runeterra](https://github.com/utilForever/Runeterra): Legends of Runeterra
+    simulator using C++ with some reinforcement learning.
+  * [Black Sun](https://store.steampowered.com/app/1670930/Black_Sun/): fly your
+    space ship through a large 2D open world.
+  * [PokeMaster](https://github.com/utilForever/PokeMaster): Pokemon Battle
+    simulator using C++ with some reinforcement learning.
+  * [HomeHearth](https://youtu.be/GrEWl8npL9Y): choose your hero, protect the
+    town, before it's too late.
+  * [City Builder Game](https://github.com/PhiGei2000/CityBuilderGame): a simple
+    city-building game using C++ and OpenGL.
+  * [BattleSub](https://github.com/bfeldpw/battlesub): two player 2D submarine
+    game with some fluid dynamics.
+  * [Crimson Rush](https://github.com/WilKam01/LuaCGame): a dungeon-crawler and
+    rougelike inspired game about exploring and surviving as long as possible.
+  * [Space Fight](https://github.com/cholushkin/SpaceFight): one screen
+    multi-player arcade shooter game prototype.
+  * [Confetti Party](https://github.com/hexerei/entt-confetti): C++ sample
+    application as a starting point using `EnTT` and `SDL2`.
+
+* Engines and the like:
+  * [Aether Engine](https://hadean.com/spatial-simulation/)
+    [v1.1+](https://docs.hadean.com/v1.1/Licenses/) by
+    [Hadean](https://hadean.com/): a library designed for spatially partitioning
+    agent-based simulations.
+  * [Fling Engine](https://github.com/flingengine/FlingEngine): a Vulkan game
+    engine with a focus on data oriented design.
+  * [NovusCore](https://github.com/novuscore/NovusCore): a modern take on World
+    of Warcraft emulation.
+  * [Chrysalis](https://github.com/ivanhawkes/Chrysalis): action RPG SDK for
+    CRYENGINE games.
+  * [LM-Engine](https://github.com/Lawrencemm/LM-Engine): the Vim of game
+    engines.
+  * [Edyn](https://github.com/xissburg/edyn): a real-time physics engine
+    organized as an ECS.
+  * [MushMachine](https://github.com/MadeOfJelly/MushMachine): engine...
+    vrooooommm.
+  * [Antara Gaming SDK](https://github.com/KomodoPlatform/antara-gaming-sdk):
+    the Komodo Gaming Software Development Kit.
+  * [XVP](https://ravingbots.com/xvp-expansive-vehicle-physics-for-unreal-engine/):
+    [_eXpansive Vehicle Physics_](https://github.com/raving-bots/xvp/wiki/Plugin-integration-guide)
+    plugin for Unreal Engine.
+  * [Apparently](https://teamwisp.github.io/credits/)
+    [Wisp](https://teamwisp.github.io/product/) by
+    [Team Wisp](https://teamwisp.github.io/): an advanced real-time ray tracing
+    renderer built for the demands of video game artists.
+  * [shiva](https://github.com/Milerius/shiva): modern C++ engine with
+    modularity.
+  * [ImGui/EnTT editor](https://github.com/Green-Sky/imgui_entt_entity_editor):
+    a drop-in, single-file entity editor for `EnTT` that uses `ImGui` as
+    graphical backend (with
+    [demo code](https://github.com/Green-Sky/imgui_entt_entity_editor_demo)).
+  * [SgOgl](https://github.com/stwe/SgOgl): a game engine library for OpenGL
+    developed for educational purposes.
+  * [Lumos](https://github.com/jmorton06/Lumos): game engine written in C++
+    using OpenGL and Vulkan.
+  * [Silvanus](https://github.com/hobbyistmaker/silvanus): Silvanus Fusion 360
+    Box Generator.
+  * [Lina Engine](https://github.com/inanevin/LinaEngine): an open-source,
+    modular, tiny and fast C++ game engine, aimed to develop 3D desktop games.
+  * [Spike](https://github.com/FahimFuad/Spike): a powerful game engine which
+    can run on a toaster.
+  * [Helena Framework](https://github.com/NIKEA-SOFT/HelenaFramework): a modern
+    framework in C++17 for backend development.
+  * [Unity/EnTT](https://github.com/TongTungGiang/unity-entt): tech demo of a
+    native simulation layer using `EnTT` and `Unity` as a rendering engine.
+  * [OverEngine](https://github.com/OverShifted/OverEngine): an over-engineered
+    game engine.
+  * [Electro](https://github.com/Electro-Technologies/Electro): high performance
+    3D game engine with a high emphasis on rendering.
+  * [Kawaii](https://github.com/Mathieu-Lala/Kawaii_Engine): a modern data
+    oriented game engine.
+  * [Becketron](https://github.com/Doctor-Foxling/Becketron): a game engine
+    written mostly in C++.
+  * [Spatial Engine](https://github.com/luizgabriel/Spatial.Engine): a
+    cross-platform engine created on top of google's filament rendering engine.
+  * [Kaguya](https://github.com/KaiH0717/Kaguya): D3D12 Rendering Engine.
+  * [OpenAWE](https://github.com/OpenAWE-Project/OpenAWE): open implementation
+    of the Alan Wake Engine.
+  * [Nazara Engine](https://github.com/DigitalPulseSoftware/NazaraEngine): fast,
+    cross-platform, object-oriented API to help in daily developer life.
+  * [Billy Engine](https://github.com/billy4479/BillyEngine): some kind of a 2D
+    engine based on `SDL2` and `EnTT`.
+  * [Ducktape](https://github.com/DucktapeEngine/Ducktape): an open source C++
+    2D & 3D game engine that focuses on being fast and powerful.
+
+* Articles, videos and blog posts:
+  * [Some posts](https://skypjack.github.io/tags/#entt) on my personal
+    [blog](https://skypjack.github.io/) are about `EnTT`, for those who want to
+    know **more** on this project.
+  * [Game Engine series](https://www.youtube.com/c/TheChernoProject/videos) by
+    [The Cherno](https://github.com/TheCherno) (not only about `EnTT` but also
+    on the use of an ECS in general):
+    - [Intro to EnTT](https://www.youtube.com/watch?v=D4hz0wEB978).
+    - [Entities and Components](https://www.youtube.com/watch?v=-B1iu4QJTUc).
+    - [The ENTITY Class](https://www.youtube.com/watch?v=GfSzeAcsBb0).
+    - [Camera Systems](https://www.youtube.com/watch?v=ubZn7BlrnTU).
+    - [Scene Camera](https://www.youtube.com/watch?v=UKVFRRufKzo).
+    - [Native Scripting](https://www.youtube.com/watch?v=iIUhg88MK5M).
+    - [Native Scripting (now with virtual functions!)](https://www.youtube.com/watch?v=1cHEcrIn8IQ).
+    - [Scene Hierarchy Panel](https://www.youtube.com/watch?v=wziDnE8guvI).
+    - [Properties Panel](https://www.youtube.com/watch?v=NBpB0qscF3E).
+    - [Camera Component UI](https://www.youtube.com/watch?v=RIMt_6agUiU).
+    - [Drawing Component UI](https://www.youtube.com/watch?v=u3yq8s3KuSE).
+    - [Transform Component UI](https://www.youtube.com/watch?v=8JqcXYbzPJc).
+    - [Adding/Removing Entities and Components UI](https://www.youtube.com/watch?v=PsyGmsIgp9M).
+    - [Saving and Loading Scenes](https://www.youtube.com/watch?v=IEiOP7Y-Mbc).
+    - ... And so on.
+      [Check out](https://www.youtube.com/channel/UCQ-W1KE9EYfdxhL6S4twUNw) the
+      _Game Engine Series_ by The Cherno for more videos.
+  * [Space Battle: Huge edition](http://victor.madtriangles.com/code%20experiment/2018/06/11/post-ecs-battle-huge.html):
+    huge space battle built entirely from scratch.
+  * [Space Battle](https://github.com/vblanco20-1/ECS_SpaceBattle): huge space
+    battle built on `UE4`.
+  * [Experimenting with ECS in UE4](http://victor.madtriangles.com/code%20experiment/2018/03/25/post-ue4-ecs-battle.html):
+    interesting article about `UE4` and `EnTT`.
+  * [Implementing ECS architecture in UE4](https://forums.unrealengine.com/development-discussion/c-gameplay-programming/1449913-implementing-ecs-architecture-in-ue4-giant-space-battle):
+    giant space battle.
+  * [Conan Adventures (SFML and EnTT in C++)](https://leinnan.github.io/blog/conan-adventuressfml-and-entt-in-c.html):
+    create projects in modern C++ using `SFML`, `EnTT`, `Conan` and `CMake`.
+  * [Adding EnTT ECS to Chrysalis](https://www.tauradius.com/post/adding-an-ecs-to-chrysalis/):
+    a blog entry (and its 
+    [follow-up](https://www.tauradius.com/post/chrysalis-update-2020-08-02/)) 
+    about the integration of `EnTT` into `Chrysalis`, an action RPG SDK for
+    CRYENGINE games.
+  * [Creating Minecraft in One Week with C++ and Vulkan](https://vazgriz.com/189/creating-minecraft-in-one-week-with-c-and-vulkan/):
+    a crack at recreating Minecraft in one week using a custom C++ engine and
+    Vulkan ([code included](https://github.com/vazgriz/VoxelGame)).
+  * [Ability Creator](https://www.erichildebrand.net/blog/ability-creator-project-retrospect):
+    project retrospect by [Eric Hildebrand](https://www.erichildebrand.net/).
+  * [EnTT Entity Component System Gaming Library](https://gamefromscratch.com/entt-entity-component-system-gaming-library/):
+    `EnTT` on GameFromScratch.com.
+  * [Custom C++ server for UE5](https://youtu.be/fbXZVNCOvjM) optimized for
+    MMO(RPG)s and its [follow-up](https://youtu.be/yGlZeopx2hU) episode about
+    player bots and full external ECS: a series definitely worth looking at.
+
+* Any Other Business:
+  * [ArcGIS Runtime SDKs](https://developers.arcgis.com/arcgis-runtime/) by
+    [Esri](https://www.esri.com/): they use `EnTT` for the internal ECS and the
+    cross platform C++ rendering engine. The SDKs are utilized by a lot of
+    enterprise custom apps, as well as by Esri for its own public applications
+    such as
+    [Explorer](https://play.google.com/store/apps/details?id=com.esri.explorer),
+    [Collector](https://play.google.com/store/apps/details?id=com.esri.arcgis.collector)
+    and
+    [Navigator](https://play.google.com/store/apps/details?id=com.esri.navigator).
+  * [FASTSUITE Edition 2](https://www.fastsuite.com/en_EN/fastsuite/fastsuite-edition-2.html)
+    by [Cenit](http://www.cenit.com/en_EN/about-us/overview.html): they use
+    `EnTT` to drive their simulation, that is, the communication between robot
+    controller emulator and renderer.
+  * [Ragdoll](https://ragdolldynamics.com/): real-time physics for Autodesk Maya
+    2020.
+  * [Project Lagrange](https://github.com/adobe/lagrange): a robust geometry
+    processing library by [Adobe](https://github.com/adobe).
+  * [AtomicDEX](https://github.com/KomodoPlatform/atomicDEX-Desktop): a secure
+    wallet and non-custodial decentralized exchange rolled into one application.
+  * [Apparently](https://www.linkedin.com/in/skypjack/)
+    [NIO](https://www.nio.io/): there was a collaboration to make some changes
+    to `EnTT`, at the time used for internal projects.
+  * [Apparently](https://www.linkedin.com/jobs/view/architekt-c%2B%2B-at-tieto-1219512333/)
+    [Tieto](https://www.tieto.com/): they published a job post where `EnTT` was
+    listed on their software stack.
+  * [Sequentity](https://github.com/alanjfs/sequentity): A MIDI-like
+    sequencer/tracker for C++ and `ImGui` (with `Magnum` and `EnTT`).
+  * [EnTT meets Sol2](https://github.com/skaarj1989/entt-meets-sol2): freely
+    available examples of how to combine `EnTT` and `Sol2`.
+  * [Godot meets EnTT](https://github.com/portaloffreedom/godot_entt_example/):
+    a simple example on how to use `EnTT` within
+    [`Godot`](https://godotengine.org/).
+  * [Godot and GameNetworkingSockets meet EnTT](https://github.com/portaloffreedom/godot_entt_net_example):
+    a simple example on how to use `EnTT` and
+    [`GameNetworkingSockets`](https://github.com/ValveSoftware/GameNetworkingSockets)
+    within [`Godot`](https://godotengine.org/).
+  * [MatchOneEntt](https://github.com/mhaemmerle/MatchOneEntt): port of
+    [Match One](https://github.com/sschmid/Match-One) for `Entitas-CSharp`.
+  * GitHub contains also
+    [many other examples](https://github.com/search?o=desc&q=%22skypjack%2Fentt%22&s=indexed&type=Code)
+    of use of `EnTT` from which to take inspiration if interested.
+
+If you know of other resources out there that are about `EnTT`, feel free to
+open an issue or a PR and I'll be glad to add them to this page.

external/entt/entt/docs/md/locator.md

@@ -0,0 +1,88 @@
+# Crash Course: service locator
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [Service locator](#service-locator)
+  * [Opaque handles](#opaque-handles)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+Usually, service locators are tightly bound to the services they expose and it's
+hard to define a general purpose solution.<br/>
+This tiny class tries to fill the gap and gets rid of the burden of defining a
+different specific locator for each application.
+
+# Service locator
+
+The service locator API tries to mimic that of `std::optional` and adds some
+extra functionalities on top of it such as allocator support.<br/>
+There are a couple of functions to set up a service, namely `emplace` and
+`allocate_emplace`:
+
+```cpp
+entt::locator<interface>::emplace<service>(argument);
+entt::locator<interface>::allocate_emplace<service>(allocator, argument);
+```
+
+The difference is that the latter expects an allocator as the first argument and
+uses it to allocate the service itself.<br/>
+Once a service is set up, it's retrieved using the `value` function:
+
+```cpp
+interface &service = entt::locator<interface>::value();
+```
+
+Since the service may not be set (and therefore this function may result in an
+undefined behavior), the `has_value` and `value_or` functions are also available
+to test a service locator and to get a fallback service in case there is none:
+
+```cpp
+if(entt::locator<interface>::has_value()) {
+    // ...
+}
+
+interface &service = entt::locator<interface>::value_or<fallback_impl>(argument);
+```
+
+All arguments are used only if necessary, that is, if a service doesn't already
+exist and therefore the fallback service is constructed and returned. In all
+other cases, they are discarded.<br/>
+Finally, to reset a service, use the `reset` function.
+
+## Opaque handles
+
+Sometimes it's useful to _transfer_ a copy of a service to another locator. For
+example, when working across boundaries it's common to _share_ a service with a
+dynamically loaded module.<br/>
+Options aren't much in this case. Among these is the possibility of _exporting_
+services and assigning them to a different locator.
+
+This is what the `handle` and `reset` functions are meant for.<br/>
+The former returns an opaque object useful for _exporting_ (or rather, obtaining
+a reference to) a service. The latter also accepts an optional argument to a
+handle which then allows users to reset a service by initializing it with an
+opaque handle:
+
+```cpp
+auto handle = entt::locator<interface>::handle();
+entt::locator<interface>::reset(handle);
+```
+
+It's worth noting that it's possible to get handles for uninitialized services
+and use them with other locators. Of course, all a user will get is to have an
+uninitialized service elsewhere as well.
+
+Note that exporting a service allows users to _share_ the object currently set
+in a locator. Replacing it won't replace the element even where a service has
+been configured with a handle to the previous item.<br/>
+In other words, if an audio service is replaced with a null object to silence an
+application and the original service was shared, this operation won't propagate
+to the other locators. Therefore, a module that share the ownership of the
+original audio service is still able to emit sounds.

external/entt/entt/docs/md/poly.md

@@ -0,0 +1,359 @@
+# Crash Course: poly
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+  * [Other libraries](#other-libraries)
+* [Concept and implementation](#concept-and-implementation)
+  * [Deduced interface](#deduced-interface)
+  * [Defined interface](#defined-interface)
+  * [Fulfill a concept](#fulfill-a-concept)
+* [Inheritance](#inheritance)
+* [Static polymorphism in the wild](#static-polymorphism-in-the-wild)
+* [Storage size and alignment requirement](#storage-size-and-alignment-requirement)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+Static polymorphism is a very powerful tool in C++, albeit sometimes cumbersome
+to obtain.<br/>
+This module aims to make it simple and easy to use.
+
+The library allows to define _concepts_ as interfaces to fulfill with concrete
+classes without having to inherit from a common base.<br/>
+This is, among others, one of the advantages of static polymorphism in general
+and of a generic wrapper like that offered by the `poly` class template in
+particular.<br/>
+What users get is an object that can be passed around as such and not through a
+reference or a pointer, as happens when it comes to working with dynamic
+polymorphism.
+
+Since the `poly` class template makes use of `entt::any` internally, it also
+supports most of its feature. Among the most important, the possibility to
+create aliases to existing and thus unmanaged objects. This allows users to
+exploit the static polymorphism while maintaining ownership of objects.<br/>
+Likewise, the `poly` class template also benefits from the small buffer
+optimization offered by the `entt::any` class and therefore minimizes the number
+of allocations, avoiding them altogether where possible.
+
+## Other libraries
+
+There are some very interesting libraries regarding static polymorphism.<br/>
+Among all, the two that I prefer are:
+
+* [`dyno`](https://github.com/ldionne/dyno): runtime polymorphism done right.
+* [`Poly`](https://github.com/facebook/folly/blob/master/folly/docs/Poly.md):
+  a class template that makes it easy to define a type-erasing polymorphic
+  object wrapper.
+
+The former is admittedly an experimental library, with many interesting ideas.
+I've some doubts about the usefulness of some feature in real world projects,
+but perhaps my lack of experience comes into play here. In my opinion, its only
+flaw is the API which I find slightly more cumbersome than other solutions.<br/>
+The latter was undoubtedly a source of inspiration for this module, although I
+opted for different choices in the implementation of both the final API and some
+feature.
+
+Either way, the authors are gurus of the C++ community, people I only have to
+learn from.
+
+# Concept and implementation
+
+The first thing to do to create a _type-erasing polymorphic object wrapper_ (to
+use the terminology introduced by Eric Niebler) is to define a _concept_ that
+types will have to adhere to.<br/>
+For this purpose, the library offers a single class that supports both deduced
+and fully defined interfaces. Although having interfaces deduced automatically
+is convenient and allows users to write less code in most cases, this has some
+limitations and it's therefore useful to be able to get around the deduction by
+providing a custom definition for the static virtual table.
+
+Once the interface is defined, it will be sufficient to provide a generic
+implementation to fulfill the concept.<br/>
+Also in this case, the library allows customizations based on types or families
+of types, so as to be able to go beyond the generic case where necessary.
+
+## Deduced interface
+
+This is how a concept with a deduced interface is introduced:
+
+```cpp
+struct Drawable: entt::type_list<> {
+    template<typename Base>
+    struct type: Base {
+        void draw() { this->template invoke<0>(*this); }
+    };
+
+    // ...
+};
+```
+
+It's recognizable by the fact that it inherits from an empty type list.<br/>
+Functions can also be const, accept any number of parameters and return a type
+other than `void`:
+
+```cpp
+struct Drawable: entt::type_list<> {
+    template<typename Base>
+    struct type: Base {
+        bool draw(int pt) const { return this->template invoke<0>(*this, pt); }
+    };
+
+    // ...
+};
+```
+
+In this case, all parameters must be passed to `invoke` after the reference to
+`this` and the return value is whatever the internal call returns.<br/>
+As for `invoke`, this is a name that is injected into the _concept_ through
+`Base`, from which one must necessarily inherit. Since it's also a dependent
+name, the `this-> template` form is unfortunately necessary due to the rules of
+the language. However, there exists also an alternative that goes through an
+external call:
+
+```cpp
+struct Drawable: entt::type_list<> {
+    template<typename Base>
+    struct type: Base {
+        void draw() const { entt::poly_call<0>(*this); }
+    };
+
+    // ...
+};
+```
+
+Once the _concept_ is defined, users must provide a generic implementation of it
+in order to tell the system how any type can satisfy its requirements. This is
+done via an alias template within the concept itself.<br/>
+The index passed as a template parameter to either `invoke` or `poly_call`
+refers to how this alias is defined.
+
+## Defined interface
+
+A fully defined concept is no different to one for which the interface is
+deduced, with the only difference that the list of types is not empty this time:
+
+```cpp
+struct Drawable: entt::type_list<void()> {
+    template<typename Base>
+    struct type: Base {
+        void draw() { entt::poly_call<0>(*this); }
+    };
+
+    // ...
+};
+```
+
+Again, parameters and return values other than `void` are allowed. Also, the
+function type must be const when the method to bind to it is const:
+
+```cpp
+struct Drawable: entt::type_list<bool(int) const> {
+    template<typename Base>
+    struct type: Base {
+        bool draw(int pt) const { return entt::poly_call<0>(*this, pt); }
+    };
+
+    // ...
+};
+```
+
+Why should a user fully define a concept if the function types are the same as
+the deduced ones?<br>
+Because, in fact, this is exactly the limitation that can be worked around by
+manually defining the static virtual table.
+
+When things are deduced, there is an implicit constraint.<br/>
+If the concept exposes a member function called `draw` with function type
+`void()`, a concept can be satisfied:
+
+* Either by a class that exposes a member function with the same name and the
+  same signature.
+
+* Or through a lambda that makes use of existing member functions from the
+  interface itself.
+
+In other words, it's not possible to make use of functions not belonging to the
+interface, even if they are present in the types that fulfill the concept.<br/>
+Similarly, it's not possible to deduce a function in the static virtual table
+with a function type different from that of the associated member function in
+the interface itself.
+
+Explicitly defining a static virtual table suppresses the deduction step and
+allows maximum flexibility when providing the implementation for a concept.
+
+## Fulfill a concept
+
+The `impl` alias template of a concept is used to define how it's fulfilled:
+
+```cpp
+struct Drawable: entt::type_list<> {
+    // ...
+
+    template<typename Type>
+    using impl = entt::value_list<&Type::draw>;
+};
+```
+
+In this case, it's stated that the `draw` method of a generic type will be
+enough to satisfy the requirements of the `Drawable` concept.<br/>
+Both member functions and free functions are supported to fulfill concepts:
+
+```cpp
+template<typename Type>
+void print(Type &self) { self.print(); }
+
+struct Drawable: entt::type_list<void()> {
+    // ...
+
+    template<typename Type>
+    using impl = entt::value_list<&print<Type>>;
+};
+```
+
+Likewise, as long as the parameter types and return type support conversions to
+and from those of the function type referenced in the static virtual table, the
+actual implementation may differ in its function type since it's erased
+internally.<br/>
+Moreover, the `self` parameter isn't strictly required by the system and can be
+left out for free functions if not required.
+
+Refer to the inline documentation for more details.
+
+# Inheritance
+
+_Concept inheritance_ is straightforward due to how poly looks like in `EnTT`.
+Therefore, it's quite easy to build hierarchies of concepts if necessary.<br/>
+The only constraint is that all concepts in a hierarchy must belong to the same
+_family_, that is, they must be either all deduced or all defined.
+
+For a deduced concept, inheritance is achieved in a few steps:
+
+```cpp
+struct DrawableAndErasable: entt::type_list<> {
+    template<typename Base>
+    struct type: typename Drawable::template type<Base> {
+        static constexpr auto base = std::tuple_size_v<typename entt::poly_vtable<Drawable>::type>;
+        void erase() { entt::poly_call<base + 0>(*this); }
+    };
+
+    template<typename Type>
+    using impl = entt::value_list_cat_t<
+        typename Drawable::impl<Type>,
+        entt::value_list<&Type::erase>
+    >;
+};
+```
+
+The static virtual table is empty and must remain so.<br/>
+On the other hand, `type` no longer inherits from `Base` and instead forwards
+its template parameter to the type exposed by the _base class_. Internally, the
+size of the static virtual table of the base class is used as an offset for the
+local indexes.<br/>
+Finally, by means of the `value_list_cat_t` utility, the implementation consists
+in appending the new functions to the previous list.
+
+As for a defined concept instead, also the list of types must be extended, in a
+similar way to what is shown for the implementation of the above concept.<br/>
+To do this, it's useful to declare a function that allows to convert a _concept_
+into its underlying `type_list` object:
+
+```cpp
+template<typename... Type>
+entt::type_list<Type...> as_type_list(const entt::type_list<Type...> &);
+```
+
+The definition isn't strictly required, since the function will only be used
+through a `decltype` as it follows:
+
+```cpp
+struct DrawableAndErasable: entt::type_list_cat_t<
+    decltype(as_type_list(std::declval<Drawable>())),
+    entt::type_list<void()>
+> {
+    // ...
+};
+```
+
+Similar to above, `type_list_cat_t` is used to concatenate the underlying static
+virtual table with the new function types.<br/>
+Everything else is the same as already shown instead.
+
+# Static polymorphism in the wild
+
+Once the _concept_ and implementation have been introduced, it will be possible
+to use the `poly` class template to contain instances that meet the
+requirements:
+
+```cpp
+using drawable = entt::poly<Drawable>;
+
+struct circle {
+    void draw() { /* ... */ }
+};
+
+struct square {
+    void draw() { /* ... */ }
+};
+
+// ...
+
+drawable instance{circle{}};
+instance->draw();
+
+instance = square{};
+instance->draw();
+```
+
+The `poly` class template offers a wide range of constructors, from the default
+one (which will return an uninitialized `poly` object) to the copy and move
+constructors, as well as the ability to create objects in-place.<br/>
+Among others, there is also a constructor that allows users to wrap unmanaged
+objects in a `poly` instance (either const or non-const ones):
+
+```cpp
+circle shape;
+drawable instance{std::in_place_type<circle &>, shape};
+```
+
+Similarly, it's possible to create non-owning copies of `poly` from an existing
+object:
+
+```cpp
+drawable other = instance.as_ref();
+```
+
+In both cases, although the interface of the `poly` object doesn't change, it
+won't construct any element or take care of destroying the referenced objects.
+
+Note also how the underlying concept is accessed via a call to `operator->` and
+not directly as `instance.draw()`.<br/>
+This allows users to decouple the API of the wrapper from that of the concept.
+Therefore, where `instance.data()` will invoke the `data` member function of the
+poly object, `instance->data()` will map directly to the functionality exposed
+by the underlying concept.
+
+# Storage size and alignment requirement
+
+Under the hood, the `poly` class template makes use of `entt::any`. Therefore,
+it can take advantage of the possibility of defining at compile-time the size of
+the storage suitable for the small buffer optimization as well as the alignment
+requirements:
+
+```cpp
+entt::basic_poly<Drawable, sizeof(double[4]), alignof(double[4])>
+```
+
+The default size is `sizeof(double[2])`, which seems like a good compromise
+between a buffer that is too large and one unable to hold anything larger than
+an integer. The alignment requirement is optional instead and by default such
+that it's the most stringent (the largest) for any object whose size is at most
+equal to the one provided.<br/>
+It's worth noting that providing a size of 0 (which is an accepted value in all
+respects) will force the system to dynamically allocate the contained objects in
+all cases.

external/entt/entt/docs/md/process.md

@@ -0,0 +1,212 @@
+# Crash Course: cooperative scheduler
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [The process](#the-process)
+  * [Adaptor](#adaptor)
+* [The scheduler](#the-scheduler)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+Sometimes processes are a useful tool to work around the strict definition of a
+system and introduce logic in a different way, usually without resorting to the
+introduction of other components.
+
+`EnTT` offers a minimal support to this paradigm by introducing a few classes
+that users can use to define and execute cooperative processes.
+
+# The process
+
+A typical process must inherit from the `process` class template that stays true
+to the CRTP idiom. Moreover, derived classes must specify what's the intended
+type for elapsed times.
+
+A process should expose publicly the following member functions whether needed
+(note that it isn't required to define a function unless the derived class wants
+to _override_ the default behavior):
+
+* `void update(Delta, void *);`
+
+  It's invoked once per tick until a process is explicitly aborted or it
+  terminates either with or without errors. Even though it's not mandatory to
+  declare this member function, as a rule of thumb each process should at
+  least define it to work properly. The `void *` parameter is an opaque pointer
+  to user data (if any) forwarded directly to the process during an update.
+
+* `void init();`
+
+  It's invoked when the process joins the running queue of a scheduler. This
+  happens as soon as it's attached to the scheduler if the process is a top
+  level one, otherwise when it replaces its parent if the process is a
+  continuation.
+
+* `void succeeded();`
+
+  It's invoked in case of success, immediately after an update and during the
+  same tick.
+
+* `void failed();`
+
+  It's invoked in case of errors, immediately after an update and during the
+  same tick.
+
+* `void aborted();`
+
+  It's invoked only if a process is explicitly aborted. There is no guarantee
+  that it executes in the same tick, this depends solely on whether the
+  process is aborted immediately or not.
+
+Derived classes can also change the internal state of a process by invoking
+`succeed` and `fail`, as well as `pause` and `unpause` the process itself. All
+these are protected member functions made available to be able to manage the
+life cycle of a process from a derived class.
+
+Here is a minimal example for the sake of curiosity:
+
+```cpp
+struct my_process: entt::process<my_process, std::uint32_t> {
+    using delta_type = std::uint32_t;
+
+    my_process(delta_type delay)
+        : remaining{delay}
+    {}
+
+    void update(delta_type delta, void *) {
+        remaining -= std::min(remaining, delta);
+
+        // ...
+
+        if(!remaining) {
+            succeed();
+        }
+    }
+
+private:
+    delta_type remaining;
+};
+```
+
+## Adaptor
+
+Lambdas and functors can't be used directly with a scheduler for they are not
+properly defined processes with managed life cycles.<br/>
+This class helps in filling the gap and turning lambdas and functors into
+full-featured processes usable by a scheduler.
+
+The function call operator has a signature similar to the one of the `update`
+function of a process but for the fact that it receives two extra arguments to
+call whenever a process is terminated with success or with an error:
+
+```cpp
+void(Delta delta, void *data, auto succeed, auto fail);
+```
+
+Parameters have the following meaning:
+
+* `delta` is the elapsed time.
+* `data` is an opaque pointer to user data if any, `nullptr` otherwise.
+* `succeed` is a function to call when a process terminates with success.
+* `fail` is a function to call when a process terminates with errors.
+
+Both `succeed` and `fail` accept no parameters at all.
+
+Note that usually users shouldn't worry about creating adaptors at all. A
+scheduler creates them internally each and every time a lambda or a functor is
+used as a process.
+
+# The scheduler
+
+A cooperative scheduler runs different processes and helps managing their life
+cycles.
+
+Each process is invoked once per tick. If it terminates, it's removed
+automatically from the scheduler and it's never invoked again. Otherwise it's
+a good candidate to run one more time the next tick.<br/>
+A process can also have a child. In this case, the parent process is replaced
+with its child when it terminates and only if it returns with success. In case
+of errors, both the parent process and its child are discarded. This way, it's
+easy to create chain of processes to run sequentially.
+
+Using a scheduler is straightforward. To create it, users must provide only the
+type for the elapsed times and no arguments at all:
+
+```cpp
+entt::scheduler<std::uint32_t> scheduler;
+```
+
+It has member functions to query its internal data structures, like `empty` or
+`size`, as well as a `clear` utility to reset it to a clean state:
+
+```cpp
+// checks if there are processes still running
+const auto empty = scheduler.empty();
+
+// gets the number of processes still running
+entt::scheduler<std::uint32_t>::size_type size = scheduler.size();
+
+// resets the scheduler to its initial state and discards all the processes
+scheduler.clear();
+```
+
+To attach a process to a scheduler there are mainly two ways:
+
+* If the process inherits from the `process` class template, it's enough to
+  indicate its type and submit all the parameters required to construct it to
+  the `attach` member function:
+
+  ```cpp
+  scheduler.attach<my_process>(1000u);
+  ```
+
+* Otherwise, in case of a lambda or a functor, it's enough to provide an
+  instance of the class to the `attach` member function:
+
+  ```cpp
+  scheduler.attach([](auto...){ /* ... */ });
+  ```
+
+In both cases, the return value is an opaque object that offers a `then` member
+function to use to create chains of processes to run sequentially.<br/>
+As a minimal example of use:
+
+```cpp
+// schedules a task in the form of a lambda function
+scheduler.attach([](auto delta, void *, auto succeed, auto fail) {
+    // ...
+})
+// appends a child in the form of another lambda function
+.then([](auto delta, void *, auto succeed, auto fail) {
+    // ...
+})
+// appends a child in the form of a process class
+.then<my_process>(1000u);
+```
+
+To update a scheduler and therefore all its processes, the `update` member
+function is the way to go:
+
+```cpp
+// updates all the processes, no user data are provided
+scheduler.update(delta);
+
+// updates all the processes and provides them with custom data
+scheduler.update(delta, &data);
+```
+
+In addition to these functions, the scheduler offers an `abort` member function
+that can be used to discard all the running processes at once:
+
+```cpp
+// aborts all the processes abruptly ...
+scheduler.abort(true);
+
+// ... or gracefully during the next tick
+scheduler.abort();
+```

external/entt/entt/docs/md/reference.md

@@ -0,0 +1,75 @@
+# Similar projects
+
+There are many projects similar to `EnTT`, both open source and not.<br/>
+Some even borrowed some ideas from this library and expressed them in different
+languages.<br/>
+Others developed different architectures from scratch and therefore offer
+alternative solutions with their pros and cons.
+
+Below an incomplete list of those that I've come across so far.<br/>
+If some terms or designs aren't clear, I recommend referring to the
+[_ECS Back and Forth_](https://skypjack.github.io/tags/#ecs) series for all the
+details.
+
+I hope this list can grow much more in the future:
+
+* C:
+  * [destral_ecs](https://github.com/roig/destral_ecs): a single-file ECS based
+    on sparse sets.
+  * [Diana](https://github.com/discoloda/Diana): an ECS that uses sparse sets to
+    keep track of entities in systems.
+  * [Flecs](https://github.com/SanderMertens/flecs): a multithreaded archetype
+    ECS based on semi-contiguous arrays rather than chunks.
+  * [lent](https://github.com/nem0/lent): the Donald Trump of the ECS libraries.
+
+* C++:
+  * [decs](https://github.com/vblanco20-1/decs): a chunk based archetype ECS.
+  * [ecst](https://github.com/SuperV1234/ecst): a multithreaded compile-time
+    ECS that uses sparse sets to keep track of entities in systems.
+  * [EntityX](https://github.com/alecthomas/entityx): a bitset based ECS that
+    uses a single large matrix of components indexed with entities.
+  * [Gaia-ECS](https://github.com/richardbiely/gaia-ecs): a chunk based
+    archetype ECS.
+  * [Polypropylene](https://github.com/pmbittner/Polypropylene): a hybrid
+    solution between an ECS and dynamic mixins.
+
+* C#
+  * [Entitas](https://github.com/sschmid/Entitas-CSharp): the ECS framework for
+    C# and Unity, where _reactive systems_ were invented.
+  * [LeoECS](https://github.com/Leopotam/ecs): simple lightweight C# Entity
+    Component System framework.
+  * [Svelto.ECS](https://github.com/sebas77/Svelto.ECS): a very interesting
+    platform agnostic and table based ECS framework.
+
+* Go:
+  * [gecs](https://github.com/tutumagi/gecs): a sparse sets based ECS inspired 
+    by `EnTT`.
+
+* Javascript:
+  * [\@javelin/ecs](https://github.com/3mcd/javelin/tree/master/packages/ecs):
+    an archetype ECS in TypeScript.
+  * [ecsy](https://github.com/MozillaReality/ecsy): I haven't had the time to
+    investigate the underlying design of `ecsy` but it looks cool anyway.
+
+* Perl:
+  * [Game::Entities](https://gitlab.com/jjatria/perl-game-entities): a simple
+    entity registry for ECS designs inspired by `EnTT`.
+
+* Raku:
+  * [Game::Entities](https://gitlab.com/jjatria/raku-game-entities): a simple
+    entity registry for ECS designs inspired by `EnTT`.
+
+* Rust:
+  * [Legion](https://github.com/TomGillen/legion): a chunk based archetype ECS.
+  * [Shipyard](https://github.com/leudz/shipyard): it borrows some ideas from
+    `EnTT` and offers a sparse sets based ECS with grouping functionalities.
+  * [Sparsey](https://github.com/LechintanTudor/sparsey): sparse set based ECS
+    written in Rust.
+  * [Specs](https://github.com/amethyst/specs): a parallel ECS based mainly on
+    hierarchical bitsets that allows different types of storage as needed.
+
+* Zig
+  * [zig-ecs](https://github.com/prime31/zig-ecs): a _zig-ification_ of `EnTT`.
+
+If you know of other resources out there that can be of interest for the reader,
+feel free to open an issue or a PR and I'll be glad to add them to this page.

external/entt/entt/docs/md/resource.md

@@ -0,0 +1,191 @@
+# Crash Course: resource management
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [The resource, the loader and the cache](#the-resource-the-loader-and-the-cache)
+  * [Resource handle](#resource-handle)
+  * [Loaders](#loader)
+  * [The cache class](#the-cache)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+Resource management is usually one of the most critical parts of a game.
+Solutions are often tuned to the particular application. There exist several
+approaches and all of them are perfectly fine as long as they fit the
+requirements of the piece of software in which they are used.<br/>
+Examples are loading everything on start, loading on request, predictive
+loading, and so on.
+
+`EnTT` doesn't pretend to offer a _one-fits-all_ solution for the different
+cases.<br/>
+Instead, the library comes with a minimal, general purpose resource cache that
+might be useful in many cases.
+
+# The resource, the loader and the cache
+
+Resource, loader and cache are the three main actors for the purpose.<br/>
+The _resource_ is an image, an audio, a video or any other type:
+
+```cpp
+struct my_resource { const int value; };
+```
+
+The _loader_ is a callable type the aim of which is to load a specific resource:
+
+```cpp
+struct my_loader final {
+    using result_type = std::shared_ptr<my_resource>;
+
+    result_type operator()(int value) const {
+        // ...
+        return std::make_shared<my_resource>(value);
+    }
+};
+```
+
+Its function operator can accept any arguments and should return a value of the
+declared result type (`std::shared_ptr<my_resource>` in the example).<br/>
+A loader can also overload its function call operator to make it possible to
+construct the same or another resource from different lists of arguments.
+
+Finally, a cache is a specialization of a class template tailored to a specific
+resource and (optionally) a loader:
+
+```cpp
+using my_cache = entt::resource_cache<my_resource, my_loader>;
+
+// ...
+
+my_cache cache{};
+```
+
+The class is designed to create different caches for different resource types
+and to manage each one independently in the most appropriate way.<br/>
+As a (very) trivial example, audio tracks can survive in most of the scenes of
+an application while meshes can be associated with a single scene only, then
+discarded when a player leaves it.
+
+## Resource handle
+
+Resources aren't returned directly to the caller. Instead, they are wrapped in a
+_resource handle_, an instance of the `entt::resource` class template.<br/>
+For those who know the _flyweight design pattern_ already, that's exactly what
+it is. To all others, this is the time to brush up on some notions instead.
+
+A shared pointer could have been used as a resource handle. In fact, the default
+implementation mostly maps the interface of its standard counterpart and only
+adds a few things on top of it.<br/>
+However, the handle in `EnTT` is designed as a standalone class template. This
+is due to the fact that specializing a class in the standard library is often
+undefined behavior while having the ability to specialize the handle for one,
+more or all resource types could help over time.
+
+## Loaders
+
+A loader is responsible for _loading_ resources (quite obviously).<br/>
+By default, it's just a callable object that forwards its arguments to the
+resource itself. That is, a _passthrough type_. All the work is demanded to the
+constructor(s) of the resource itself.<br/>
+Loaders also are fully customizable as expected.
+
+A custom loader is a class with at least one function call operator and a member
+type named `result_type`.<br/>
+The loader isn't required to return a resource handle. As long as `return_type`
+is suitable for constructing a handle, that's fine.
+
+When using the default handle, it expects a resource type which is convertible
+to or suitable for constructing an `std::shared_ptr<Type>` (where `Type` is the
+actual resource type).<br/>
+In other terms, the loader should return shared pointers to the given resource
+type. However, this isn't mandatory. Users can easily get around this constraint
+by specializing both the handle and the loader.
+
+A cache forwards all its arguments to the loader if required. This means that
+loaders can also support tag dispatching to offer different loading policies:
+
+```cpp
+struct my_loader {
+    using result_type = std::shared_ptr<my_resource>;
+
+    struct from_disk_tag{};
+    struct from_network_tag{};
+
+    template<typename Args>
+    result_type operator()(from_disk_tag, Args&&... args) {
+        // ...
+        return std::make_shared<my_resource>(std::forward<Args>(args)...);
+    }
+
+    template<typename Args>
+    result_type operator()(from_network_tag, Args&&... args) {
+        // ...
+        return std::make_shared<my_resource>(std::forward<Args>(args)...);
+    }
+}
+```
+
+This makes the whole loading logic quite flexible and easy to extend over time.
+
+## The cache class
+
+The cache is the class that is asked to _connect the dots_.<br/>
+It loads the resources, stores them aside and returns handles as needed:
+
+```cpp
+entt::resource_cache<my_resource, my_loader> cache{};
+```
+
+Under the hood, a cache is nothing more than a map where the key value has type
+`entt::id_type` while the mapped value is whatever type its loader returns.<br/>
+For this reason, it offers most of the functionalities a user would expect from
+a map, such as `empty` or `size` and so on. Similarly, it's an iterable type
+that also supports indexing by resource id:
+
+```cpp
+for(auto [id, res]: cache) {
+    // ...
+}
+
+if(entt::resource<my_resource> res = cache["resource/id"_hs]; res) {
+    // ...
+}
+```
+
+Please, refer to the inline documentation for all the details about the other
+functions (such as `contains` or `erase`).
+
+Set aside the part of the API that this class _shares_ with a map, it also adds
+something on top of it in order to address the most common requirements of a
+resource cache.<br/>
+In particular, it doesn't have an `emplace` member function which is replaced by
+`load` and `force_load` instead (where the former loads a new resource only if
+not present while the second triggers a forced loading in any case):
+
+```cpp
+auto ret = cache.load("resource/id"_hs);
+
+// true only if the resource was not already present
+const bool loaded = ret.second;
+
+// takes the resource handle pointed to by the returned iterator
+entt::resource<my_resource> res = ret.first->second;
+```
+
+Note that the hashed string is used for convenience in the example above.<br/>
+Resource identifiers are nothing more than integral values. Therefore, plain
+numbers as well as non-class enum value are accepted.
+
+It's worth mentioning that the iterators of a cache as well as its indexing
+operators return resource handles rather than instances of the mapped type.<br/>
+Since the cache has no control over the loader and a resource isn't required to
+also be convertible to bool, these handles can be invalid. This usually means an
+error in the user logic but it may also be an _expected_ event.<br/>
+It's therefore recommended to verify handles validity with a check in debug (for
+example, when loading) or an appropriate logic in retail.

external/entt/entt/docs/md/signal.md

@@ -0,0 +1,549 @@
+# Crash Course: events, signals and everything in between
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Introduction](#introduction)
+* [Delegate](#delegate)
+  * [Runtime arguments](#runtime-arguments)
+  * [Lambda support](#lambda-support)
+* [Signals](#signals)
+* [Event dispatcher](#event-dispatcher)
+  * [Named queues](#named-queues)
+* [Event emitter](#event-emitter)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+# Introduction
+
+Signals are more often than not a core part of games and software architectures
+in general.<br/>
+They help to decouple the various parts of a system while allowing them to
+communicate with each other somehow.
+
+The so called _modern C++_ comes with a tool that can be useful in this regard,
+the `std::function`. As an example, it can be used to create delegates.<br/>
+However, there is no guarantee that an `std::function` doesn't perform
+allocations under the hood and this could be problematic sometimes. Furthermore,
+it solves a problem but may not adapt well to other requirements that may arise
+from time to time.
+
+In case that the flexibility and power of an `std::function` isn't required or
+if the price to pay for them is too high, `EnTT` offers a complete set of
+lightweight classes to solve the same and many other problems.
+
+# Delegate
+
+A delegate can be used as a general purpose invoker with no memory overhead for
+free functions and member functions provided along with an instance on which to
+invoke them.<br/>
+It doesn't claim to be a drop-in replacement for an `std::function`, so don't
+expect to use it whenever an `std::function` fits well. That said, it's most
+likely even a better fit than an `std::function` in a lot of cases, so expect to
+use it quite a lot anyway.
+
+The interface is trivial. It offers a default constructor to create empty
+delegates:
+
+```cpp
+entt::delegate<int(int)> delegate{};
+```
+
+What is needed to create an instance is to specify the type of the function the
+delegate _accepts_, that is the signature of the functions it models.<br/>
+However, attempting to use an empty delegate by invoking its function call
+operator results in undefined behavior or most likely a crash.
+
+There exist a few overloads of the `connect` member function to initialize a
+delegate:
+
+```cpp
+int f(int i) { return i; }
+
+struct my_struct {
+    int f(const int &i) const { return i; }
+};
+
+// bind a free function to the delegate
+delegate.connect<&f>();
+
+// bind a member function to the delegate
+my_struct instance;
+delegate.connect<&my_struct::f>(instance);
+```
+
+The delegate class also accepts data members, if needed. In this case, the
+function type of the delegate is such that the parameter list is empty and the
+value of the data member is at least convertible to the return type.
+
+Free functions having type equivalent to `void(T &, args...)` are accepted as
+well. The first argument `T &` is considered a payload and the function will
+receive it back every time it's invoked. In other terms, this works just fine
+with the above definition:
+
+```cpp
+void g(const char &c, int i) { /* ... */ }
+const char c = 'c';
+
+delegate.connect<&g>(c);
+delegate(42);
+```
+
+The function `g` is invoked with a reference to `c` and `42`. However, the
+function type of the delegate is still `void(int)`. This is also the signature
+of its function call operator.<br/>
+Another interesting aspect of the delegate class is that it accepts functions
+with a list of parameters that is shorter than that of its function type:
+
+```cpp
+void g() { /* ... */ }
+delegate.connect<&g>();
+delegate(42);
+```
+
+Where the function type of the delegate is `void(int)` as above. It goes without
+saying that the extra arguments are silently discarded internally.<br/>
+This is a nice-to-have feature in a lot of cases, as an example when the
+`delegate` class is used as a building block of a signal-slot system.
+
+To create and initialize a delegate at once, there are a few specialized
+constructors. Because of the rules of the language, the listener is provided by
+means of the `entt::connect_arg` variable template:
+
+```cpp
+entt::delegate<int(int)> func{entt::connect_arg<&f>};
+```
+
+Aside `connect`, a `disconnect` counterpart isn't provided. Instead, there
+exists a `reset` member function to use to clear a delegate.<br/>
+To know if a delegate is empty, it can be used explicitly in every conditional
+statement:
+
+```cpp
+if(delegate) {
+    // ...
+}
+```
+
+Finally, to invoke a delegate, the function call operator is the way to go as
+already shown in the examples above:
+
+```cpp
+auto ret = delegate(42);
+```
+
+In all cases, listeners don't have to strictly follow the signature of the
+delegate. As long as a listener can be invoked with the given arguments to yield
+a result that is convertible to the given result type, everything works just
+fine.
+
+As a side note, members of classes may or may not be associated with instances.
+If they are not, the first argument of the function type must be that of the
+class on which the members operate and an instance of this class must obviously
+be passed when invoking the delegate:
+
+```cpp
+entt::delegate<void(my_struct &, int)> delegate;
+delegate.connect<&my_struct::f>();
+
+my_struct instance;
+delegate(instance, 42);
+```
+
+In this case, it's not possible to _deduce_ the function type since the first
+argument doesn't necessarily have to be a reference (for example, it can be a
+pointer, as well as a const reference).<br/>
+Therefore, the function type must be declared explicitly for unbound members.
+
+## Runtime arguments
+
+The `delegate` class is meant to be used primarily with template arguments.
+However, as a consequence of its design, it also offers minimal support for
+runtime arguments.<br/>
+When used like this, some features aren't supported though. In particular:
+
+* Curried functions aren't accepted.
+* Functions with an argument list that differs from that of the delegate aren't
+  supported.
+* Return type and types of arguments **must** coincide with those of the
+  delegate and _being at least convertible_ isn't enough anymore.
+
+Moreover, for a given function type `Ret(Args...)`, the signature of the
+functions connected at runtime must necessarily be `Ret(const void *, Args...)`.
+
+Runtime arguments can be passed both to the constructor of a delegate and to the
+`connect` member function. An optional parameter is also accepted in both cases.
+This argument is used to pass arbitrary user data back and forth as a
+`const void *` upon invocation.<br/>
+To connect a function to a delegate _in the hard way_:
+
+```cpp
+int func(const void *ptr, int i) { return *static_cast<const int *>(ptr) * i; }
+const int value = 42;
+
+// use the constructor ...
+entt::delegate delegate{&func, &value};
+
+// ... or the connect member function
+delegate.connect(&func, &value);
+```
+
+The type of the delegate is deduced from the function if possible. In this case,
+since the first argument is an implementation detail, the deduced function type
+is `int(int)`.<br/>
+Invoking a delegate built in this way follows the same rules as previously
+explained.
+
+## Lambda support
+
+In general, the `delegate` class doesn't fully support lambda functions in all
+their nuances. The reason is pretty simple: a `delegate` isn't a drop-in
+replacement for an `std::function`. Instead, it tries to overcome the problems
+with the latter.<br/>
+That being said, non-capturing lambda functions are supported, even though some
+features aren't available in this case.
+
+This is a logical consequence of the support for connecting functions at
+runtime. Therefore, lambda functions undergo the same rules and
+limitations.<br/>
+In fact, since non-capturing lambda functions decay to pointers to functions,
+they can be used with a `delegate` as if they were _normal functions_ with
+optional payload:
+
+```cpp
+my_struct instance;
+
+// use the constructor ...
+entt::delegate delegate{+[](const void *ptr, int value) {
+    return static_cast<const my_struct *>(ptr)->f(value);
+}, &instance};
+
+// ... or the connect member function
+delegate.connect([](const void *ptr, int value) {
+    return static_cast<const my_struct *>(ptr)->f(value);
+}, &instance);
+```
+
+As above, the first parameter (`const void *`) isn't part of the function type
+of the delegate and is used to dispatch arbitrary user data back and forth. In
+other terms, the function type of the delegate above is `int(int)`.
+
+# Signals
+
+Signal handlers work with references to classes, function pointers and pointers
+to members. Listeners can be any kind of objects and users are in charge of
+connecting and disconnecting them from a signal to avoid crashes due to
+different lifetimes. On the other side, performance shouldn't be affected that
+much by the presence of such a signal handler.<br/>
+Signals make use of delegates internally and therefore they undergo the same
+rules and offer similar functionalities. It may be a good idea to consult the
+documentation of the `delegate` class for further information.
+
+A signal handler is can be used as a private data member without exposing any
+_publish_ functionality to the clients of a class.<br/>
+The basic idea is to impose a clear separation between the signal itself and the
+`sink` class, that is a tool to be used to connect and disconnect listeners on
+the fly.
+
+The API of a signal handler is straightforward. If a collector is supplied to
+the signal when something is published, all the values returned by its listeners
+are literally _collected_ and used later by the caller. Otherwise, the class
+works just like a plain signal that emits events from time to time.<br/>
+To create instances of signal handlers it's sufficient to provide the type of
+function to which they refer:
+
+```cpp
+entt::sigh<void(int, char)> signal;
+```
+
+Signals offer all the basic functionalities required to know how many listeners
+they contain (`size`) or if they contain at least a listener (`empty`), as well
+as a function to use to swap handlers (`swap`).
+
+Besides them, there are member functions to use both to connect and disconnect
+listeners in all their forms by means of a sink:
+
+```cpp
+void foo(int, char) { /* ... */ }
+
+struct listener {
+    void bar(const int &, char) { /* ... */ }
+};
+
+// ...
+
+entt::sink sink{signal};
+listener instance;
+
+sink.connect<&foo>();
+sink.connect<&listener::bar>(instance);
+
+// ...
+
+// disconnects a free function
+sink.disconnect<&foo>();
+
+// disconnect a member function of an instance
+sink.disconnect<&listener::bar>(instance);
+
+// disconnect all member functions of an instance, if any
+sink.disconnect(instance);
+
+// discards all listeners at once
+sink.disconnect();
+```
+
+As shown above, listeners don't have to strictly follow the signature of the
+signal. As long as a listener can be invoked with the given arguments to yield a
+result that is convertible to the given return type, everything works just
+fine.<br/>
+It's also possible to connect a listener before other elements already contained
+by the signal. The `before` function returns a `sink` object that is correctly
+initialized for the purpose and can be used to connect one or more listeners in
+order and in the desired position:
+
+```cpp
+sink.before<&foo>().connect<&listener::bar>(instance);
+```
+
+In all cases, the `connect` member function returns by default a `connection`
+object to be used as an alternative to break a connection by means of its
+`release` member function.<br/>
+A `scoped_connection` can also be created from a connection. In this case, the
+link is broken automatically as soon as the object goes out of scope.
+
+Once listeners are attached (or even if there are no listeners at all), events
+and data in general are published through a signal by means of the `publish`
+member function:
+
+```cpp
+signal.publish(42, 'c');
+```
+
+To collect data, the `collect` member function is used instead:
+
+```cpp
+int f() { return 0; }
+int g() { return 1; }
+
+// ...
+
+entt::sigh<int()> signal;
+entt::sink sink{signal};
+
+sink.connect<&f>();
+sink.connect<&g>();
+
+std::vector<int> vec{};
+signal.collect([&vec](int value) { vec.push_back(value); });
+
+assert(vec[0] == 0);
+assert(vec[1] == 1);
+```
+
+A collector must expose a function operator that accepts as an argument a type
+to which the return type of the listeners can be converted. Moreover, it can
+optionally return a boolean value that is true to stop collecting data, false
+otherwise. This way one can avoid calling all the listeners in case it isn't
+necessary.<br/>
+Functors can also be used in place of a lambda. Since the collector is copied
+when invoking the `collect` member function, `std::ref` is the way to go in this
+case:
+
+```cpp
+struct my_collector {
+    std::vector<int> vec{};
+
+    bool operator()(int v) {
+        vec.push_back(v);
+        return true;
+    }
+};
+
+// ...
+
+my_collector collector;
+signal.collect(std::ref(collector));
+```
+
+# Event dispatcher
+
+The event dispatcher class allows users to trigger immediate events or to queue
+and publish them all together later.<br/>
+This class lazily instantiates its queues. Therefore, it's not necessary to
+_announce_ the event types in advance:
+
+```cpp
+// define a general purpose dispatcher
+entt::dispatcher dispatcher{};
+```
+
+A listener registered with a dispatcher is such that its type offers one or more
+member functions that take arguments of type `Event &` for any type of event,
+regardless of the return value.<br/>
+These functions are linked directly via `connect` to a _sink_:
+
+```cpp
+struct an_event { int value; };
+struct another_event {};
+
+struct listener {
+    void receive(const an_event &) { /* ... */ }
+    void method(const another_event &) { /* ... */ }
+};
+
+// ...
+
+listener listener;
+dispatcher.sink<an_event>().connect<&listener::receive>(listener);
+dispatcher.sink<another_event>().connect<&listener::method>(listener);
+```
+
+Note that connecting listeners within event handlers can result in undefined
+behavior.<br/>
+The `disconnect` member function is used to remove one listener at a time or all
+of them at once:
+
+```cpp
+dispatcher.sink<an_event>().disconnect<&listener::receive>(listener);
+dispatcher.sink<another_event>().disconnect(listener);
+```
+
+The `trigger` member function serves the purpose of sending an immediate event
+to all the listeners registered so far:
+
+```cpp
+dispatcher.trigger(an_event{42});
+dispatcher.trigger<another_event>();
+```
+
+Listeners are invoked immediately, order of execution isn't guaranteed. This
+method can be used to push around urgent messages like an _is terminating_
+notification on a mobile app.
+
+On the other hand, the `enqueue` member function queues messages together and
+helps to maintain control over the moment they are sent to listeners:
+
+```cpp
+dispatcher.enqueue<an_event>(42);
+dispatcher.enqueue(another_event{});
+```
+
+Events are stored aside until the `update` member function is invoked:
+
+```cpp
+// emits all the events of the given type at once
+dispatcher.update<an_event>();
+
+// emits all the events queued so far at once
+dispatcher.update();
+```
+
+This way users can embed the dispatcher in a loop and literally dispatch events
+once per tick to their systems.
+
+## Named queues
+
+All queues within a dispatcher are associated by default with an event type and
+then retrieved from it.<br/>
+However, it's possible to create queues with different _names_ (and therefore
+also multiple queues for a single type). In fact, more or less all functions
+also take an additional parameter. As an example:
+
+```cpp
+dispatcher.sink<an_event>("custom"_hs).connect<&listener::receive>(listener);
+```
+
+In this case, the term _name_ is misused as these are actual numeric identifiers
+of type `id_type`.<br/>
+An exception to this rule is the `enqueue` function. There is no additional
+parameter for it but rather a different function:
+
+```cpp
+dispatcher.enqueue_hint<an_event>("custom"_hs, 42);
+```
+
+This is mainly due to the template argument deduction rules and unfortunately
+there is no real (elegant) way to avoid it.
+
+# Event emitter
+
+A general purpose event emitter thought mainly for those cases where it comes to
+working with asynchronous stuff.<br/>
+Originally designed to fit the requirements of
+[`uvw`](https://github.com/skypjack/uvw) (a wrapper for `libuv` written in
+modern C++), it was adapted later to be included in this library.
+
+To create an emitter type, derived classes must inherit from the base as:
+
+```cpp
+struct my_emitter: emitter<my_emitter> {
+    // ...
+}
+```
+
+Handlers for the different events are created internally on the fly. It's not
+required to specify in advance the full list of accepted events.<br/>
+Moreover, whenever an event is published, an emitter also passes a reference
+to itself to its listeners.
+
+To create new instances of an emitter, no arguments are required:
+
+```cpp
+my_emitter emitter{};
+```
+
+Listeners are movable and callable objects (free functions, lambdas, functors,
+`std::function`s, whatever) whose function type is compatible with:
+
+```cpp
+void(Type &, my_emitter &)
+```
+
+Where `Type` is the type of event they want to receive.<br/>
+To attach a listener to an emitter, there exists the `on` member function:
+
+```cpp
+emitter.on<my_event>([](const my_event &event, my_emitter &emitter) {
+    // ...
+});
+```
+
+Similarly, the `reset` member function is used to disconnect listeners given a
+type while `clear` is used to disconnect all listeners at once:
+
+```cpp
+// resets the listener for my_event
+emitter.erase<my_event>();
+
+// resets all listeners
+emitter.clear()
+```
+
+To send an event to the listener registered on a given type, the `publish`
+function is the way to go:
+
+```cpp
+struct my_event { int i; };
+
+// ...
+
+emitter.publish(my_event{42});
+```
+
+Finally, the `empty` member function tests if there exists at least a listener
+registered with the event emitter while `contains` is used to check if a given
+event type is associated with a valid listener:
+
+```cpp
+if(emitter.contains<my_event>()) {
+    // ...
+}
+```
+
+This class introduces a _nice-to-have_ model based on events and listeners.<br/>
+More in general, it's a handy tool when the derived classes _wrap_ asynchronous
+operations but it's not limited to such uses.

external/entt/entt/docs/md/unreal.md

@@ -0,0 +1,107 @@
+# EnTT and Unreal Engine
+
+<!--
+@cond TURN_OFF_DOXYGEN
+-->
+# Table of Contents
+
+* [Enable Cpp17](#enable-cpp17)
+* [EnTT as a third party module](#entt-as-a-third-party-module)
+* [Include EnTT](#include-entt)
+<!--
+@endcond TURN_OFF_DOXYGEN
+-->
+
+## Enable Cpp17
+
+As of writing (Unreal Engine v4.25), the default C++ standard of Unreal Engine
+is C++14.<br/>
+On the other hand, note that `EnTT` requires C++17 to compile. To enable it, in
+the main module of the project there should be a `<Game Name>.Build.cs` file,
+the constructor of which must contain the following lines:
+
+```cs
+PCHUsage = PCHUsageMode.NoSharedPCHs;
+PrivatePCHHeaderFile = "<PCH filename>.h";
+CppStandard = CppStandardVersion.Cpp17;
+```
+
+Replace `<PCH filename>.h` with the name of the already existing PCH header
+file, if any.<br/>
+In case the project doesn't already contain a file of this type, it's possible
+to create one with the following content:
+
+```cpp
+#pragma once
+#include "CoreMinimal.h"
+```
+
+Remember to remove any old `PCHUsage = <...>` line that was previously there. At
+this point, C++17 support should be in place.<br/>
+Try to compile the project to ensure it works as expected before following
+further steps.
+
+Note that updating a *project* to C++17 doesn't necessarily mean that the IDE in
+use will also start to recognize its syntax.<br/>
+If the plan is to use C++17 in the project too, check the specific instructions
+for the IDE in use.
+
+## EnTT as a third party module
+
+Once this point is reached, the `Source` directory should look like this:
+
+```
+Source
+|  MyGame.Target.cs
+|  MyGameEditor.Target.cs
+|
++---MyGame
+|  |  MyGame.Build.cs
+|  |  MyGame.h (PCH Header file)
+|
+\---ThirdParty
+   \---EnTT
+      |   EnTT.Build.cs
+      |
+      \---entt (GitHub repository content inside)
+```
+
+To make this happen, create the folder `ThirdParty` under `Source` if it doesn't
+exist already. Then, add an `EnTT` folder under `ThirdParty`.<br/>
+Within the latter, create a new file `EnTT.Build.cs` with the following content:
+
+```cs
+using System.IO;
+using UnrealBuildTool;
+
+public class EnTT: ModuleRules {
+    public EnTT(ReadOnlyTargetRules Target) : base(Target) {
+        Type = ModuleType.External;
+        PublicIncludePaths.Add(Path.Combine(ModuleDirectory, "entt", "src", "entt"));
+    }
+}
+```
+
+The last line indicates that the actual files will be found in the directory
+`EnTT/entt/src/entt`.<br/>
+Download the repository for `EnTT` and place it next to `EnTT.Build.cs` or
+update the path above accordingly.
+
+Finally, open the `<Game Name>.Build.cs` file and add `EnTT` as a dependency at
+the end of the list:
+
+```cs
+PublicDependencyModuleNames.AddRange(new[] {
+    "Core", "CoreUObject", "Engine", "InputCore", [...], "EnTT"
+});
+```
+
+Note that some IDEs might require a restart to start recognizing the new module
+for code-highlighting features and such.
+
+## Include EnTT
+
+In any source file of the project, add `#include "entt.hpp"` or any other path
+to the file from `EnTT` to use it.<br/>
+Try to create a registry as `entt::registry registry;` to make sure everything
+compiles fine.

external/entt/entt/entt.imp

@@ -0,0 +1,34 @@
+[
+  { "include": [ "@<gtest/internal/.*>", "private", "<gtest/gtest.h>", "public" ] },
+  { "include": [ "@<gtest/gtest-.*>", "private", "<gtest/gtest.h>", "public" ] },
+  { "include": [ "@[\"<].*/container/fwd.hpp[\">]", "private", "<entt/container/dense_map.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/container/fwd.hpp[\">]", "private", "<entt/container/dense_set.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/any.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/family.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/hashed_string.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/ident.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/monostate.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/type_info.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/core/fwd.hpp[\">]", "private", "<entt/core/type_traits.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/entity.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/group.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/handle.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/helper.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/observer.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/organizer.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/registry.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/runtime_view.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/snapshot.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/sparse_set.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/storage.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/entity/fwd.hpp[\">]", "private", "<entt/entity/view.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/meta/fwd.hpp[\">]", "private", "<entt/meta/meta.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/poly/fwd.hpp[\">]", "private", "<entt/poly/poly.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/resource/fwd.hpp[\">]", "private", "<entt/resource/cache.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/resource/fwd.hpp[\">]", "private", "<entt/resource/loader.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/resource/fwd.hpp[\">]", "private", "<entt/resource/resource.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/signal/fwd.hpp[\">]", "private", "<entt/signal/delegate.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/signal/fwd.hpp[\">]", "private", "<entt/signal/dispatcher.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/signal/fwd.hpp[\">]", "private", "<entt/signal/emitter.hpp>", "public" ] },
+  { "include": [ "@[\"<].*/signal/fwd.hpp[\">]", "private", "<entt/signal/sigh.hpp>", "public" ] }
+]

external/entt/entt/natvis/entt/config.natvis

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+</AutoVisualizer>

external/entt/entt/natvis/entt/container.natvis

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::dense_map&lt;*&gt;">
+		<Intrinsic Name="size" Expression="packed.first_base::value.size()"/>
+		<Intrinsic Name="bucket_count" Expression="sparse.first_base::value.size()"/>
+		<DisplayString>{{ size={ size() } }}</DisplayString>
+		<Expand>
+			<Item Name="[capacity]" ExcludeView="simple">packed.first_base::value.capacity()</Item>
+			<Item Name="[bucket_count]" ExcludeView="simple">bucket_count()</Item>
+			<Item Name="[load_factor]" ExcludeView="simple">(float)size() / (float)bucket_count()</Item>
+			<Item Name="[max_load_factor]" ExcludeView="simple">threshold</Item>
+			<IndexListItems>
+				<Size>size()</Size>
+				<ValueNode>packed.first_base::value[$i].element</ValueNode>
+			</IndexListItems>
+		</Expand>
+	</Type>
+	<Type Name="entt::dense_set&lt;*&gt;">
+		<Intrinsic Name="size" Expression="packed.first_base::value.size()"/>
+		<Intrinsic Name="bucket_count" Expression="sparse.first_base::value.size()"/>
+		<DisplayString>{{ size={ size() } }}</DisplayString>
+		<Expand>
+			<Item Name="[capacity]" ExcludeView="simple">packed.first_base::value.capacity()</Item>
+			<Item Name="[bucket_count]" ExcludeView="simple">bucket_count()</Item>
+			<Item Name="[load_factor]" ExcludeView="simple">(float)size() / (float)bucket_count()</Item>
+			<Item Name="[max_load_factor]" ExcludeView="simple">threshold</Item>
+			<IndexListItems>
+				<Size>size()</Size>
+				<ValueNode>packed.first_base::value[$i].second</ValueNode>
+			</IndexListItems>
+		</Expand>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/core.natvis

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <Type Name="entt::basic_any&lt;*&gt;">
+		<DisplayString>{{ type={ info->alias,na }, policy={ mode,en } }}</DisplayString>
+    </Type>
+	<Type Name="entt::compressed_pair&lt;*&gt;">
+		<Intrinsic Name="first" Optional="true" Expression="((first_base*)this)->value"/>
+		<Intrinsic Name="first" Optional="true" Expression="*(first_base::base_type*)this"/>
+		<Intrinsic Name="second" Optional="true" Expression="((second_base*)this)->value"/>
+		<Intrinsic Name="second" Optional="true" Expression="*(second_base::base_type*)this"/>
+		<DisplayString >({ first() }, { second() })</DisplayString>
+		<Expand>
+			<Item Name="[first]">first()</Item>
+			<Item Name="[second]">second()</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_hashed_string&lt;*&gt;">
+		<DisplayString Condition="base_type::repr != nullptr">{{ hash={ base_type::hash } }}</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<Item Name="[data]">base_type::repr,na</Item>
+			<Item Name="[length]">base_type::length</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::type_info">
+		<DisplayString>{{ name={ alias,na } }}</DisplayString>
+		<Expand>
+			<Item Name="[hash]">identifier</Item>
+			<Item Name="[index]">seq</Item>
+		</Expand>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/entity.natvis

@@ -0,0 +1,153 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::basic_registry&lt;*&gt;">
+		<Intrinsic Name="pools_size" Expression="pools.packed.first_base::value.size()"/>
+		<Intrinsic Name="vars_size" Expression="vars.ctx.packed.first_base::value.size()"/>
+		<Intrinsic Name="to_entity" Expression="*((entity_traits::entity_type *)&amp;entity) &amp; entity_traits::entity_mask">
+			<Parameter Name="entity" Type="entity_traits::value_type &amp;"/>
+		</Intrinsic>
+		<DisplayString>{{ size={ epool.size() } }}</DisplayString>
+		<Expand>
+			<Item IncludeView="simple" Name="[epool]">epool,view(simple)nr</Item>
+			<Synthetic Name="[epool]" ExcludeView="simple">
+				<DisplayString>{ epool.size() }</DisplayString>
+				<Expand>
+					<CustomListItems>
+						<Variable Name="pos" InitialValue="0" />
+						<Variable Name="last" InitialValue="epool.size()"/>
+						<Loop>
+							<Break Condition="pos == last"/>
+							<If Condition="to_entity(epool[pos]) == pos">
+								<Item Name="[{ pos }]">epool[pos]</Item>
+							</If>
+							<Exec>++pos</Exec>
+						</Loop>
+					</CustomListItems>
+				</Expand>
+			</Synthetic>
+			<Synthetic Name="[destroyed]" ExcludeView="simple">
+				<DisplayString>{ to_entity(free_list) != entity_traits::entity_mask }</DisplayString>
+				<Expand>
+					<CustomListItems>
+						<Variable Name="it" InitialValue="to_entity(free_list)" />
+						<Loop>
+							<Break Condition="it == entity_traits::entity_mask"/>
+							<Item Name="[{ it }]">epool[it]</Item>
+							<Exec>it = to_entity(epool[it])</Exec>
+						</Loop>
+					</CustomListItems>
+				</Expand>
+			</Synthetic>
+			<Synthetic Name="[pools]">
+				<DisplayString>{ pools_size() }</DisplayString>
+				<Expand>
+					<IndexListItems ExcludeView="simple">
+						<Size>pools_size()</Size>
+						<ValueNode>*pools.packed.first_base::value[$i].element.second</ValueNode>
+					</IndexListItems>
+					<IndexListItems IncludeView="simple">
+						<Size>pools_size()</Size>
+						<ValueNode>*pools.packed.first_base::value[$i].element.second,view(simple)</ValueNode>
+					</IndexListItems>
+				</Expand>
+			</Synthetic>
+			<Item Name="[groups]" ExcludeView="simple">groups.size()</Item>
+			<Synthetic Name="[vars]">
+				<DisplayString>{ vars_size() }</DisplayString>
+				<Expand>
+					<IndexListItems>
+						<Size>vars_size()</Size>
+						<ValueNode>vars.ctx.packed.first_base::value[$i].element.second</ValueNode>
+					</IndexListItems>
+				</Expand>
+			</Synthetic>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_sparse_set&lt;*&gt;">
+		<DisplayString>{{ size={ packed.size() }, type={ info->alias,na } }}</DisplayString>
+		<Expand>
+			<Item Name="[capacity]" ExcludeView="simple">packed.capacity()</Item>
+			<Item Name="[policy]">mode,en</Item>
+			<Synthetic Name="[sparse]">
+				<DisplayString>{ sparse.size() * entity_traits::page_size }</DisplayString>
+				<Expand>
+					<ExpandedItem IncludeView="simple">sparse,view(simple)</ExpandedItem>
+					<CustomListItems ExcludeView="simple">
+						<Variable Name="pos" InitialValue="0"/>
+						<Variable Name="page" InitialValue="0"/>
+						<Variable Name="offset" InitialValue="0"/>
+						<Variable Name="last" InitialValue="sparse.size() * entity_traits::page_size"/>
+						<Loop>
+							<Break Condition="pos == last"/>
+							<Exec>page = pos / entity_traits::page_size</Exec>
+							<Exec>offset = pos &amp; (entity_traits::page_size - 1)</Exec>
+							<If Condition="sparse[page] &amp;&amp; (*((entity_traits::entity_type *)&amp;sparse[page][offset]) &lt; ~entity_traits::entity_mask)">
+								<Item Name="[{ pos }]">*((entity_traits::entity_type *)&amp;sparse[page][offset]) &amp; entity_traits::entity_mask</Item>
+							</If>
+							<Exec>++pos</Exec>
+						</Loop>
+					</CustomListItems>
+				</Expand>
+			</Synthetic>
+			<Synthetic Name="[packed]">
+				<DisplayString>{ packed.size() }</DisplayString>
+				<Expand>
+					<ExpandedItem IncludeView="simple">packed,view(simple)</ExpandedItem>
+					<CustomListItems ExcludeView="simple">
+						<Variable Name="pos" InitialValue="0"/>
+						<Variable Name="last" InitialValue="packed.size()"/>
+						<Loop>
+							<Break Condition="pos == last"/>
+							<If Condition="*((entity_traits::entity_type *)&amp;packed[pos]) &lt; ~entity_traits::entity_mask">
+								<Item Name="[{ pos }]">packed[pos]</Item>
+							</If>
+							<Exec>++pos</Exec>
+						</Loop>
+					</CustomListItems>
+				</Expand>
+			</Synthetic>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_storage&lt;*&gt;">
+		<DisplayString>{{ size={ base_type::packed.size() }, type={ base_type::info->alias,na } }}</DisplayString>
+		<Expand>
+			<Item Name="[capacity]" Optional="true" ExcludeView="simple">packed.first_base::value.capacity() * comp_traits::page_size</Item>
+			<Item Name="[page size]" Optional="true" ExcludeView="simple">comp_traits::page_size</Item>
+			<Item Name="[base]" ExcludeView="simple">(base_type*)this,nand</Item>
+			<Item Name="[base]" IncludeView="simple">(base_type*)this,view(simple)nand</Item>
+			<!-- having SFINAE-like techniques in natvis is priceless :) -->
+			<CustomListItems Condition="packed.first_base::value.size() != 0" Optional="true">
+				<Variable Name="pos" InitialValue="0" />
+				<Variable Name="last" InitialValue="base_type::packed.size()"/>
+				<Loop>
+					<Break Condition="pos == last"/>
+					<If Condition="*((base_type::entity_traits::entity_type *)&amp;base_type::packed[pos]) &lt; ~base_type::entity_traits::entity_mask">
+						<Item Name="[{ pos }:{ base_type::packed[pos] }]">packed.first_base::value[pos / comp_traits::page_size][pos &amp; (comp_traits::page_size - 1)]</Item>
+					</If>
+					<Exec>++pos</Exec>
+				</Loop>
+			</CustomListItems>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_view&lt;*&gt;">
+		<DisplayString>{{ size_hint={ view->packed.size() } }}</DisplayString>
+		<Expand>
+			<Item Name="[pools]">pools,na</Item>
+			<Item Name="[filter]">filter,na</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_runtime_view&lt;*&gt;">
+		<DisplayString Condition="pools.size() != 0u">{{ size_hint={ pools[0]->packed.size() } }}</DisplayString>
+		<DisplayString>{{ size_hint=0 }}</DisplayString>
+		<Expand>
+			<Item Name="[pools]">pools,na</Item>
+			<Item Name="[filter]">filter,na</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::null_t">
+		<DisplayString>&lt;null&gt;</DisplayString>
+	</Type>
+	<Type Name="entt::tombstone_t">
+		<DisplayString>&lt;tombstone&gt;</DisplayString>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/graph.natvis

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <Type Name="entt::adjacency_matrix&lt;*&gt;">
+		<DisplayString>{{ size={ vert } }}</DisplayString>
+        <Expand>
+			<CustomListItems>
+				<Variable Name="pos" InitialValue="0" />
+				<Variable Name="last" InitialValue="vert * vert"/>
+				<Loop>
+					<Break Condition="pos == last"/>
+					<If Condition="matrix[pos] != 0u">
+						<Item Name="{pos / vert}">pos % vert</Item>
+					</If>
+					<Exec>++pos</Exec>
+				</Loop>
+			</CustomListItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/locator.natvis

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+</AutoVisualizer>

external/entt/entt/natvis/entt/meta.natvis

@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::internal::meta_base_node">
+		<DisplayString>{{}}</DisplayString>
+	</Type>
+	<Type Name="entt::internal::meta_conv_node">
+		<DisplayString>{{}}</DisplayString>
+	</Type>
+	<Type Name="entt::internal::meta_ctor_node">
+		<DisplayString>{{ arity={ arity } }}</DisplayString>
+	</Type>
+	<Type Name="entt::internal::meta_data_node">
+		<Intrinsic Name="has_property" Expression="!!(traits &amp; property)">
+			<Parameter Name="property" Type="int"/>
+		</Intrinsic>
+		<DisplayString>{{ arity={ arity } }}</DisplayString>
+		<Expand>
+			<Item Name="[arity]">arity</Item>
+			<Item Name="[is_const]">has_property(entt::internal::meta_traits::is_const)</Item>
+			<Item Name="[is_static]">has_property(entt::internal::meta_traits::is_static)</Item>
+			<Item Name="[prop]">prop</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::internal::meta_func_node"	>
+		<Intrinsic Name="has_property" Expression="!!(traits &amp; property)">
+			<Parameter Name="property" Type="int"/>
+		</Intrinsic>
+		<DisplayString>{{ arity={ arity } }}</DisplayString>
+		<Expand>
+			<Item Name="[is_const]">has_property(entt::internal::meta_traits::is_const)</Item>
+			<Item Name="[is_static]">has_property(entt::internal::meta_traits::is_static)</Item>
+			<Item Name="[next]" Condition="next != nullptr">*next</Item>
+			<Item Name="[prop]">prop</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::internal::meta_prop_node">
+		<DisplayString>{ value }</DisplayString>
+	</Type>
+	<Type Name="entt::internal::meta_template_node">
+		<DisplayString>{{ arity={ arity } }}</DisplayString>
+	</Type>
+	<Type Name="entt::internal::meta_type_node">
+		<Intrinsic Name="has_property" Expression="!!(traits &amp; property)">
+			<Parameter Name="property" Type="int"/>
+		</Intrinsic>
+		<DisplayString Condition="info != nullptr">{{ type={ info->alias,na } }}</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<Item Name="[id]">id</Item>
+			<Item Name="[sizeof]">size_of</Item>
+			<Item Name="[is_arithmetic]">has_property(entt::internal::meta_traits::is_arithmetic)</Item>
+			<Item Name="[is_integral]">has_property(entt::internal::meta_traits::is_integral)</Item>
+			<Item Name="[is_signed]">has_property(entt::internal::meta_traits::is_signed)</Item>
+			<Item Name="[is_array]">has_property(entt::internal::meta_traits::is_array)</Item>
+			<Item Name="[is_enum]">has_property(entt::internal::meta_traits::is_enum)</Item>
+			<Item Name="[is_class]">has_property(entt::internal::meta_traits::is_class)</Item>
+			<Item Name="[is_meta_pointer_like]">has_property(entt::internal::meta_traits::is_meta_pointer_like)</Item>
+			<Item Name="[is_meta_sequence_container]">has_property(entt::internal::meta_traits::is_meta_sequence_container)</Item>
+			<Item Name="[is_meta_associative_container]">has_property(entt::internal::meta_traits::is_meta_associative_container)</Item>
+			<Item Name="[default_constructor]">default_constructor != nullptr</Item>
+			<Item Name="[conversion_helper]">conversion_helper != nullptr</Item>
+			<Item Name="[from_void]">from_void != nullptr</Item>
+			<Item Name="[template_info]">templ</Item>
+			<Item Name="[details]" Condition="details != nullptr">*details</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_any">
+		<DisplayString Condition="node.info != nullptr">{{ type={ node.info->alias,na }, policy={ storage.mode,en } }}</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<ExpandedItem>node</ExpandedItem>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_handle">
+		<DisplayString>{ any }</DisplayString>
+	</Type>
+	<Type Name="entt::meta_associative_container">
+		<DisplayString>{ storage }</DisplayString>
+		<Expand>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_sequence_container">
+		<DisplayString>{ storage }</DisplayString>
+		<Expand>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_data">
+		<DisplayString Condition="node != nullptr">{ *node }</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<ExpandedItem Condition="node != nullptr">node</ExpandedItem>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_func">
+		<DisplayString Condition="node != nullptr">{ *node }</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<ExpandedItem Condition="node != nullptr">node</ExpandedItem>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_prop">
+		<DisplayString Condition="node != nullptr">{ *node }</DisplayString>
+		<DisplayString>{{}}</DisplayString>
+		<Expand>
+			<ExpandedItem Condition="node != nullptr">node</ExpandedItem>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::meta_type">
+		<DisplayString>{ node }</DisplayString>
+		<Expand>
+			<ExpandedItem>node</ExpandedItem>
+			<Item Name="[context]" Condition="ctx != nullptr">ctx->value</Item>
+		</Expand>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/platform.natvis

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+</AutoVisualizer>

external/entt/entt/natvis/entt/poly.natvis

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::basic_poly&lt;*&gt;">
+		<DisplayString>{ storage }</DisplayString>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/process.natvis

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+</AutoVisualizer>

external/entt/entt/natvis/entt/resource.natvis

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::resource&lt;*&gt;">
+		<DisplayString>{ value }</DisplayString>
+		<Expand>
+			<ExpandedItem>value</ExpandedItem>
+		</Expand>
+	</Type>
+	<Type Name="entt::resource_cache&lt;*&gt;">
+		<DisplayString>{ pool.first_base::value }</DisplayString>
+		<Expand>
+			<ExpandedItem>pool.first_base::value</ExpandedItem>
+		</Expand>
+	</Type>
+</AutoVisualizer>

external/entt/entt/natvis/entt/signal.natvis

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+	<Type Name="entt::delegate&lt;*&gt;">
+		<DisplayString>{{ type={ "$T1" } }}</DisplayString>
+		<Expand>
+			<Item Name="[empty]">fn == nullptr</Item>
+			<Item Name="[data]">instance</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::basic_dispatcher&lt;*&gt;">
+		<Intrinsic Name="size" Expression="pools.first_base::value.packed.first_base::value.size()"/>
+		<DisplayString>{{ size={ size() } }}</DisplayString>
+		<Expand>
+			<Synthetic Name="[pools]">
+				<DisplayString>{ size() }</DisplayString>
+				<Expand>
+					<IndexListItems>
+						<Size>size()</Size>
+						<ValueNode>*pools.first_base::value.packed.first_base::value[$i].element.second</ValueNode>
+					</IndexListItems>
+				</Expand>
+			</Synthetic>
+		</Expand>
+	</Type>
+	<Type Name="entt::internal::dispatcher_handler&lt;*&gt;">
+		<DisplayString>{{ size={ events.size() }, event={ "$T1" } }}</DisplayString>
+		<Expand>
+			<Item Name="[signal]">signal</Item>
+		</Expand>
+	</Type>
+	<Type Name="entt::emitter&lt;*&gt;">
+		<DisplayString>{{ size={ handlers.first_base::value.packed.first_base::value.size() } }}</DisplayString>
+	</Type>
+	<Type Name="entt::connection">
+		<DisplayString>{{ bound={ signal != nullptr } }}</DisplayString>
+	</Type>
+	<Type Name="entt::scoped_connection">
+		<DisplayString>{ conn }</DisplayString>
+	</Type>
+	<Type Name="entt::sigh&lt;*&gt;">
+		<DisplayString>{{ size={ calls.size() }, type={ "$T1" } }}</DisplayString>
+		<Expand>
+			<IndexListItems>
+				<Size>calls.size()</Size>
+				<ValueNode>calls[$i]</ValueNode>
+			</IndexListItems>
+		</Expand>
+	</Type>
+	<Type Name="entt::sink&lt;*&gt;">
+		<DisplayString>{{ type={ "$T1" } }}</DisplayString>
+		<Expand>
+			<Item Name="[signal]">signal,na</Item>
+			<Item Name="[offset]">offset</Item>
+		</Expand>
+	</Type>
+</AutoVisualizer>

external/entt/entt/scripts/amalgamate.py

@@ -0,0 +1,299 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+# amalgamate.py - Amalgamate C source and header files.
+# Copyright (c) 2012, Erik Edlund <erik.edlund@32767.se>
+# 
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+# 
+#  * Redistributions of source code must retain the above copyright notice,
+#  this list of conditions and the following disclaimer.
+# 
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#  this list of conditions and the following disclaimer in the documentation
+#  and/or other materials provided with the distribution.
+# 
+#  * Neither the name of Erik Edlund, nor the names of its contributors may
+#  be used to endorse or promote products derived from this software without
+#  specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+import datetime
+import json
+import os
+import re
+
+
+class Amalgamation(object):
+
+    # Prepends self.source_path to file_path if needed.
+    def actual_path(self, file_path):
+        if not os.path.isabs(file_path):
+            file_path = os.path.join(self.source_path, file_path)
+        return file_path
+
+    # Search included file_path in self.include_paths and
+    # in source_dir if specified.
+    def find_included_file(self, file_path, source_dir):
+        search_dirs = self.include_paths[:]
+        if source_dir:
+            search_dirs.insert(0, source_dir)
+
+        for search_dir in search_dirs:
+            search_path = os.path.join(search_dir, file_path)
+            if os.path.isfile(self.actual_path(search_path)):
+                return search_path
+        return None
+
+    def __init__(self, args):
+        with open(args.config, 'r') as f:
+            config = json.loads(f.read())
+            for key in config:
+                setattr(self, key, config[key])
+
+            self.verbose = args.verbose == "yes"
+            self.prologue = args.prologue
+            self.source_path = args.source_path
+            self.included_files = []
+
+    # Generate the amalgamation and write it to the target file.
+    def generate(self):
+        amalgamation = ""
+
+        if self.prologue:
+            with open(self.prologue, 'r') as f:
+                amalgamation += datetime.datetime.now().strftime(f.read())
+
+        if self.verbose:
+            print("Config:")
+            print(" target        = {0}".format(self.target))
+            print(" working_dir   = {0}".format(os.getcwd()))
+            print(" include_paths = {0}".format(self.include_paths))
+        print("Creating amalgamation:")
+        for file_path in self.sources:
+            # Do not check the include paths while processing the source
+            # list, all given source paths must be correct.
+            # actual_path = self.actual_path(file_path)
+            print(" - processing \"{0}\"".format(file_path))
+            t = TranslationUnit(file_path, self, True)
+            amalgamation += t.content
+
+        with open(self.target, 'w') as f:
+            f.write(amalgamation)
+
+        print("...done!\n")
+        if self.verbose:
+            print("Files processed: {0}".format(self.sources))
+            print("Files included: {0}".format(self.included_files))
+        print("")
+
+
+def _is_within(match, matches):
+    for m in matches:
+        if match.start() > m.start() and \
+                match.end() < m.end():
+            return True
+    return False
+
+
+class TranslationUnit(object):
+    # // C++ comment.
+    cpp_comment_pattern = re.compile(r"//.*?\n")
+
+    # /* C comment. */
+    c_comment_pattern = re.compile(r"/\*.*?\*/", re.S)
+
+    # "complex \"stri\\\ng\" value".
+    string_pattern = re.compile("[^']" r'".*?(?<=[^\\])"', re.S)
+
+    # Handle simple include directives. Support for advanced
+    # directives where macros and defines needs to expanded is
+    # not a concern right now.
+    include_pattern = re.compile(
+        r'#\s*include\s+(<|")(?P<path>.*?)("|>)', re.S)
+
+    # #pragma once
+    pragma_once_pattern = re.compile(r'#\s*pragma\s+once', re.S)
+
+    # Search for pattern in self.content, add the match to
+    # contexts if found and update the index accordingly.
+    def _search_content(self, index, pattern, contexts):
+        match = pattern.search(self.content, index)
+        if match:
+            contexts.append(match)
+            return match.end()
+        return index + 2
+
+    # Return all the skippable contexts, i.e., comments and strings
+    def _find_skippable_contexts(self):
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = []
+
+        # Walk through the content char by char, and try to grab
+        # skippable contexts using regular expressions when found.
+        i = 1
+        content_len = len(self.content)
+        while i < content_len:
+            j = i - 1
+            current = self.content[i]
+            previous = self.content[j]
+
+            if current == '"':
+                # String value.
+                i = self._search_content(j, self.string_pattern,
+                                         skippable_contexts)
+            elif current == '*' and previous == '/':
+                # C style comment.
+                i = self._search_content(j, self.c_comment_pattern,
+                                         skippable_contexts)
+            elif current == '/' and previous == '/':
+                # C++ style comment.
+                i = self._search_content(j, self.cpp_comment_pattern,
+                                         skippable_contexts)
+            else:
+                # Skip to the next char.
+                i += 1
+
+        return skippable_contexts
+
+    # Returns True if the match is within list of other matches
+
+    # Removes pragma once from content
+    def _process_pragma_once(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        pragmas = []
+        pragma_once_match = self.pragma_once_pattern.search(self.content)
+        while pragma_once_match:
+            if not _is_within(pragma_once_match, skippable_contexts):
+                pragmas.append(pragma_once_match)
+
+            pragma_once_match = self.pragma_once_pattern.search(self.content,
+                                                                pragma_once_match.end())
+
+        # Handle all collected pragma once directives.
+        prev_end = 0
+        tmp_content = ''
+        for pragma_match in pragmas:
+            tmp_content += self.content[prev_end:pragma_match.start()]
+            prev_end = pragma_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+    # Include all trivial #include directives into self.content.
+    def _process_includes(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        # Search for include directives in the content, collect those
+        # which should be included into the content.
+        includes = []
+        include_match = self.include_pattern.search(self.content)
+        while include_match:
+            if not _is_within(include_match, skippable_contexts):
+                include_path = include_match.group("path")
+                search_same_dir = include_match.group(1) == '"'
+                found_included_path = self.amalgamation.find_included_file(
+                    include_path, self.file_dir if search_same_dir else None)
+                if found_included_path:
+                    includes.append((include_match, found_included_path))
+
+            include_match = self.include_pattern.search(self.content,
+                                                        include_match.end())
+
+        # Handle all collected include directives.
+        prev_end = 0
+        tmp_content = ''
+        for include in includes:
+            include_match, found_included_path = include
+            tmp_content += self.content[prev_end:include_match.start()]
+            tmp_content += "// {0}\n".format(include_match.group(0))
+            if found_included_path not in self.amalgamation.included_files:
+                t = TranslationUnit(found_included_path, self.amalgamation, False)
+                tmp_content += t.content
+            prev_end = include_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+        return len(includes)
+
+    # Make all content processing
+    def _process(self):
+        if not self.is_root:
+            self._process_pragma_once()
+        self._process_includes()
+
+    def __init__(self, file_path, amalgamation, is_root):
+        self.file_path = file_path
+        self.file_dir = os.path.dirname(file_path)
+        self.amalgamation = amalgamation
+        self.is_root = is_root
+
+        self.amalgamation.included_files.append(self.file_path)
+
+        actual_path = self.amalgamation.actual_path(file_path)
+        if not os.path.isfile(actual_path):
+            raise IOError("File not found: \"{0}\"".format(file_path))
+        with open(actual_path, 'r') as f:
+            self.content = f.read()
+            self._process()
+
+
+def main():
+    description = "Amalgamate C source and header files."
+    usage = " ".join([
+        "amalgamate.py",
+        "[-v]",
+        "-c path/to/config.json",
+        "-s path/to/source/dir",
+        "[-p path/to/prologue.(c|h)]"
+    ])
+    argsparser = argparse.ArgumentParser(
+        description=description, usage=usage)
+
+    argsparser.add_argument("-v", "--verbose", dest="verbose",
+                            choices=["yes", "no"], metavar="", help="be verbose")
+
+    argsparser.add_argument("-c", "--config", dest="config",
+                            required=True, metavar="", help="path to a JSON config file")
+
+    argsparser.add_argument("-s", "--source", dest="source_path",
+                            required=True, metavar="", help="source code path")
+
+    argsparser.add_argument("-p", "--prologue", dest="prologue",
+                            required=False, metavar="", help="path to a C prologue file")
+
+    amalgamation = Amalgamation(argsparser.parse_args())
+    amalgamation.generate()
+
+
+if __name__ == "__main__":
+    main()

external/entt/entt/scripts/config.json

@@ -0,0 +1,8 @@
+{
+	"project": "entt",
+	"target": "single_include/entt/entt.hpp",
+	"sources": [
+		"src/entt/entt.hpp"
+	],
+	"include_paths": ["src"]
+}

external/entt/entt/scripts/update_homebrew.sh

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+# only argument should be the version to upgrade to
+if [ $# != 1 ]
+then
+  echo "Expected a version tag like v2.7.1"
+  exit 1
+fi
+
+VERSION="$1"
+URL="https://github.com/skypjack/entt/archive/$VERSION.tar.gz"
+FORMULA="entt.rb"
+
+echo "Updating homebrew package to $VERSION"
+
+echo "Cloning..."
+git clone https://github.com/skypjack/homebrew-entt.git
+if [ $? != 0 ]
+then
+  exit 1
+fi
+cd homebrew-entt
+
+# download the repo at the version
+# exit with error messages if curl fails
+echo "Curling..."
+curl "$URL" --location --fail --silent --show-error --output archive.tar.gz
+if [ $? != 0 ]
+then
+  exit 1
+fi
+
+# compute sha256 hash
+echo "Hashing..."
+HASH="$(openssl sha256 archive.tar.gz | cut -d " " -f 2)"
+
+# delete the archive
+rm archive.tar.gz
+
+echo "Sedding..."
+
+# change the url in the formula file
+# the slashes in the URL must be escaped
+ESCAPED_URL="$(echo "$URL" | sed -e 's/[\/&]/\\&/g')"
+sed -i -e '/url/s/".*"/"'$ESCAPED_URL'"/' $FORMULA
+
+# change the hash in the formula file
+sed -i -e '/sha256/s/".*"/"'$HASH'"/' $FORMULA
+
+# delete temporary file created by sed
+rm -rf "$FORMULA-e"
+
+# update remote repo
+echo "Gitting..."
+git add entt.rb
+git commit -m "Update to $VERSION"
+git push origin master
+
+# out of homebrew-entt dir
+cd ..

external/entt/entt/src/entt/config/config.h

@@ -0,0 +1,81 @@
+#ifndef ENTT_CONFIG_CONFIG_H
+#define ENTT_CONFIG_CONFIG_H
+
+#include "version.h"
+
+#if defined(__cpp_exceptions) && !defined(ENTT_NOEXCEPTION)
+#    define ENTT_CONSTEXPR
+#    define ENTT_THROW throw
+#    define ENTT_TRY try
+#    define ENTT_CATCH catch(...)
+#else
+#    define ENTT_CONSTEXPR constexpr // use only with throwing functions (waiting for C++20)
+#    define ENTT_THROW
+#    define ENTT_TRY if(true)
+#    define ENTT_CATCH if(false)
+#endif
+
+#ifdef ENTT_USE_ATOMIC
+#    include <atomic>
+#    define ENTT_MAYBE_ATOMIC(Type) std::atomic<Type>
+#else
+#    define ENTT_MAYBE_ATOMIC(Type) Type
+#endif
+
+#ifndef ENTT_ID_TYPE
+#    include <cstdint>
+#    define ENTT_ID_TYPE std::uint32_t
+#endif
+
+#ifndef ENTT_SPARSE_PAGE
+#    define ENTT_SPARSE_PAGE 4096
+#endif
+
+#ifndef ENTT_PACKED_PAGE
+#    define ENTT_PACKED_PAGE 1024
+#endif
+
+#ifdef ENTT_DISABLE_ASSERT
+#    undef ENTT_ASSERT
+#    define ENTT_ASSERT(condition, msg) (void(0))
+#elif !defined ENTT_ASSERT
+#    include <cassert>
+#    define ENTT_ASSERT(condition, msg) assert(condition)
+#endif
+
+#ifdef ENTT_DISABLE_ASSERT
+#    undef ENTT_ASSERT_CONSTEXPR
+#    define ENTT_ASSERT_CONSTEXPR(condition, msg) (void(0))
+#elif !defined ENTT_ASSERT_CONSTEXPR
+#    define ENTT_ASSERT_CONSTEXPR(condition, msg) ENTT_ASSERT(condition, msg)
+#endif
+
+#ifdef ENTT_NO_ETO
+#    define ENTT_ETO_TYPE(Type) void
+#else
+#    define ENTT_ETO_TYPE(Type) Type
+#endif
+
+#ifdef ENTT_STANDARD_CPP
+#    define ENTT_NONSTD false
+#else
+#    define ENTT_NONSTD true
+#    if defined __clang__ || defined __GNUC__
+#        define ENTT_PRETTY_FUNCTION __PRETTY_FUNCTION__
+#        define ENTT_PRETTY_FUNCTION_PREFIX '='
+#        define ENTT_PRETTY_FUNCTION_SUFFIX ']'
+#    elif defined _MSC_VER
+#        define ENTT_PRETTY_FUNCTION __FUNCSIG__
+#        define ENTT_PRETTY_FUNCTION_PREFIX '<'
+#        define ENTT_PRETTY_FUNCTION_SUFFIX '>'
+#    endif
+#endif
+
+#if defined _MSC_VER
+#    pragma detect_mismatch("entt.version", ENTT_VERSION)
+#    pragma detect_mismatch("entt.noexcept", ENTT_XSTR(ENTT_TRY))
+#    pragma detect_mismatch("entt.id", ENTT_XSTR(ENTT_ID_TYPE))
+#    pragma detect_mismatch("entt.nonstd", ENTT_XSTR(ENTT_NONSTD))
+#endif
+
+#endif

external/entt/entt/src/entt/config/macro.h

@@ -0,0 +1,7 @@
+#ifndef ENTT_CONFIG_MACRO_H
+#define ENTT_CONFIG_MACRO_H
+
+#define ENTT_STR(arg) #arg
+#define ENTT_XSTR(arg) ENTT_STR(arg)
+
+#endif

external/entt/entt/src/entt/config/version.h

@@ -0,0 +1,14 @@
+#ifndef ENTT_CONFIG_VERSION_H
+#define ENTT_CONFIG_VERSION_H
+
+#include "macro.h"
+
+#define ENTT_VERSION_MAJOR 3
+#define ENTT_VERSION_MINOR 11
+#define ENTT_VERSION_PATCH 1
+
+#define ENTT_VERSION \
+    ENTT_XSTR(ENTT_VERSION_MAJOR) \
+    "." ENTT_XSTR(ENTT_VERSION_MINOR) "." ENTT_XSTR(ENTT_VERSION_PATCH)
+
+#endif