rename .hpp headers to .h

engine/app.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "shader.h"
+#include "shape.h"
+#include "texture.h"
+#include "layout.h"
+
+class App
+{
+    Sampler sampler;
+    Texture2D tex;
+    Node layout;
+public:
+    static App I;
+    float width;
+    float height;
+    void init();
+    void create();
+    void update(float dt);
+    void resize(float w, float h);
+    void mouse_down(int button, float x, float y);
+    void mouse_move(float x, float y);
+    void mouse_up(int button, float x, float y);
+};