combine with desktop project

Signed-off-by: Peter Siegmund <developer@mars3142.org>

include/ResourceManager.h

@@ -0,0 +1,27 @@
+#pragma once
+#include <unordered_map>
+#include <string>
+#include <mutex>
+
+#include <SDL3/SDL.h>
+
+class ResourceManager {
+public:
+    static ResourceManager& getInstance();
+
+    ResourceManager(const ResourceManager&) = delete;
+    ResourceManager& operator=(const ResourceManager&) = delete;
+    ResourceManager(ResourceManager&&) = delete;
+    ResourceManager& operator=(ResourceManager&&) = delete;
+
+    ~ResourceManager();
+
+    SDL_Texture* get_texture(SDL_Renderer* renderer, const std::string& path);
+
+private:
+    ResourceManager();
+
+    std::unordered_map<std::string, SDL_Texture*> m_textures;
+
+    mutable std::mutex m_mutex;
+};