Begin cross platform support

src/platforms/platform.h

@@ -0,0 +1,22 @@
+#ifndef PLATFORM_H
+#define PLATFORM_H
+
+#include "../utils/screen.h"
+#include "log.h"
+
+#ifdef WIN
+#include "win.h"
+
+#define FPS 10
+#define WINDOW_WIDTH 800.0f
+#define WINDOW_HEIGHT 600.0f
+#define BG_COLOR BLACK_BRUSH
+#define COLOR RGB(255, 255, 255)
+#endif
+
+void init_engine();
+void render(Screen screen);
+void tic();
+void destroy();
+
+#endif