Add Support for SDL_RWops

MiniEngine.cpp

@@ -129,6 +129,27 @@ namespace MiniEngine
 		return str.c_str();
 	}
 
+	RWOP::RWOP(FILE* fp,bool autoclose)
+	{
+	    SDL_bool b=autoclose?SDL_TRUE:SDL_FALSE;
+        op.reset(SDL_RWFromFP(fp,b),[](SDL_RWops* p){SDL_RWclose(p);});
+	}
+
+	RWOP::RWOP(const std::string& filename,const std::string& openmode)
+	{
+        op.reset(SDL_RWFromFile(filename.c_str(),openmode.c_str()),[](SDL_RWops* p){SDL_RWclose(p);});
+	}
+
+    RWOP::RWOP(const void* mem,int size)
+    {
+        op.reset(SDL_RWFromConstMem(mem,size),[](SDL_RWops* p){SDL_RWclose(p);});
+    }
+
+    RWOP::RWOP(void* mem,int size)
+    {
+        op.reset(SDL_RWFromMem(mem,size),[](SDL_RWops* p){SDL_RWclose(p);});
+    }
+
 	Texture::Texture()
 	{
         updateInfo();

MiniEngine.h

@@ -72,6 +72,20 @@ namespace MiniEngine
 		std::string str;
 	};
 
+    class RWOP
+	{
+    public:
+        RWOP(FILE* fp,bool autoclose);
+        RWOP(const std::string& filename,const std::string& openmode);
+        RWOP(const void* mem,int size);
+        RWOP(void* mem,int size);
+        RWOP()=default;
+        ~RWOP()=default;
+    private:
+        std::shared_ptr<SDL_RWops> op;
+	};
+
+
 	enum class BlendMode
 	{
 		None = SDL_BLENDMODE_NONE,