update entt to v3.12.2

external/entt

@@ -1 +1 @@
-Subproject commit fef921132cae7588213d0f9bcd2fb9c8ffd8b7fc
+Subproject commit 344e03ac64a1f78424ab1150e2d4778e8df8431d

framework/imgui/src/mm/imgui/imgui_entt_entity_editor.hpp

@@ -137,7 +137,7 @@ public:
 				for(auto &&curr: registry.storage()) {
 					if(auto &storage = curr.second; storage.contains(old_e)) {
 						// TODO: do something with the return value. returns false on failure.
-						storage.emplace(e, storage.get(old_e));
+						storage.push(e, storage.value(old_e));
 					}
 				}
 			}
@@ -237,11 +237,11 @@ public:
 
 		if (comp_list.empty()) {
 			ImGui::Text("Orphans:");
-			registry.each([&registry](auto e){
+			for (EntityType e : registry.template storage<EntityType>()) {
 				if (registry.orphan(e)) {
 					MM_IEEE_ENTITY_WIDGET(e, registry, false);
 				}
-			});
+			}
 		} else {
 			entt::runtime_view view{};
 			for (const auto type : comp_list) {
@@ -264,17 +264,6 @@ public:
 		}
 	}
 
-	[[deprecated("Use renderEditor() instead. And manage the window yourself.")]]
-	void render(Registry& registry, EntityType& e)
-	{
-		if (show_window) {
-			if (ImGui::Begin("Entity Editor", &show_window)) {
-				renderEditor(registry, e);
-			}
-			ImGui::End();
-		}
-	}
-
 	// displays both, editor and list
 	// uses static internally, use only as a quick way to get going!
 	void renderSimpleCombo(Registry& registry, EntityType& e)

framework/imgui/src/mm/services/scene_tools.cpp

@@ -1,4 +1,5 @@
 #include "./scene_tools.hpp"
+#include "mm/engine_fwd.hpp"
 
 #include <mm/engine.hpp>
 
@@ -109,17 +110,20 @@ namespace MM::Services {
 
 		if (_show_scene_metrics) {
 			if (ImGui::Begin("Scene Metrics##ImGuiSceneToolsService", &_show_scene_metrics)) {
-				ImGui::Text("capacity: %lu", scene.capacity());
-				ImGui::Text("size: %lu", scene.size());
-				ImGui::Text("alive: %lu", scene.alive());
+				ImGui::Text("capacity: %zu", scene.storage<::MM::Entity>().capacity());
+				ImGui::Text("size: %zu", scene.storage<::MM::Entity>().size());
+				ImGui::Text("alive: %zu", scene.storage<::MM::Entity>().in_use());
+				if (ImGui::CollapsingHeader("orphans")) {
+					// iterating all entities is expensive
 					size_t orphans = 0;
-				scene.each([&orphans, &scene](auto entity) {
-					if (scene.orphan(entity)) {
+					for (const auto it : scene.storage<MM::Entity>().each()) {
+						if (scene.orphan(std::get<0>(it))) {
 							orphans++;
 						}
-				});
+					}
 					ImGui::Text("orphans: %lu", orphans);
 				}
+			}
 			ImGui::End();
 		}