initial template changes, xmake integration

include/Engine.h

@@ -0,0 +1,40 @@
+#pragma once
+
+//
+//  DO NOT MODIFY THIS FILE
+//
+
+#include <stdint.h>
+
+#define SCREEN_WIDTH 1024
+#define SCREEN_HEIGHT 768
+
+// backbuffer
+extern uint32_t buffer[SCREEN_HEIGHT][SCREEN_WIDTH];
+
+enum
+{
+  VK_ESCAPE,
+  VK_SPACE,
+  VK_LEFT,
+  VK_UP,
+  VK_RIGHT,
+  VK_DOWN,
+  VK_RETURN,
+
+  VK__COUNT
+};
+
+// VK_SPACE, VK_RIGHT, VK_LEFT, VK_UP, VK_DOWN, etc.
+bool is_key_pressed(int button_vk_code);
+bool is_mouse_button_pressed(int mouse_button);
+int get_cursor_x();
+int get_cursor_y();
+
+void initialize();
+void finalize();
+
+void act(float dt);
+void draw();
+
+void schedule_quit_game();