restructured everything

include/graphics/drawable/Drawable.hpp

@@ -0,0 +1,30 @@
+/**
+ * @file Drawable.hpp
+ * @brief The base class of everything renderable by RenderTarget
+ * @author Lauchmelder23
+ * @date 20.05.2020
+ */
+#pragma once
+
+#include "Util.hpp"
+
+struct SDL_Renderer;
+
+SDLU_BEGIN
+/** 
+    * @brief Everything that can be rendered derives from this class.
+    */
+class Drawable
+{
+public:
+    Drawable(const Drawable& other) = delete;
+    Drawable(Drawable&& other) = delete;
+    Drawable& operator=(const Drawable& other) = delete;
+
+    friend class RenderTarget;
+
+protected:
+    Drawable() { }
+    virtual void Draw(SDL_Renderer* const target) const = 0;
+};
+SDLU_END