add sound sfxr loaders

framework/sound/src/mm/sound_loader_sfxr.cpp

@@ -0,0 +1,38 @@
+#include "./sound_loader_sfxr.hpp"
+
+#include <nlohmann/json.hpp>
+
+#include "./soloud_json.hpp"
+
+#include <mm/services/filesystem.hpp>
+
+
+namespace MM {
+
+std::shared_ptr<::SoLoud::Sfxr> SoundLoaderSfxrPreset::load(const ::SoLoud::Sfxr::SFXR_PRESETS preset, const int seed) const {
+	auto sfxr = std::make_shared<::SoLoud::Sfxr>();
+	sfxr->loadPreset(preset, seed);
+	return sfxr;
+}
+
+std::shared_ptr<::SoLoud::Sfxr> SoundLoaderSfxrJson::load(const nlohmann::json& j) const {
+	auto sfxr = std::make_shared<::SoLoud::Sfxr>();
+	*sfxr = j;
+	return sfxr;
+}
+
+std::shared_ptr<::SoLoud::Sfxr> SoundLoaderSfxrFile::load(const std::string& path, MM::Engine& engine) const {
+	auto& fs = engine.getService<MM::Services::FilesystemService>();
+
+	if (!fs.isFile(path.c_str())) {
+		// TODO: log error
+		return nullptr;
+	}
+
+	auto j = fs.readJson(path.c_str());
+
+	return SoundLoaderSfxrJson{}.load(j);
+}
+
+} // MM
+