1 files changed, 44 insertions, 0 deletions
diff --git a/src/core/gameinterface.h b/src/core/gameinterface.h
new file mode 100644
index 0000000..3bd887c
--- /dev/null
+++ b/src/core/gameinterface.h
@@ -0,0 +1,44 @@
+/*
+   core/game.h
+   This file is part of the Osirion project and is distributed under 
+   the terms of the GNU General Public License version 2 
+*/
+
+#ifndef __INCLUDED_CORE_GAMEINTERFACE_H__
+#define __INCLUDED_CORE_GAMEINTERFACE_H__
+
+namespace core
+{
+
+/// abstract interface from the core to the game-specific code
+/** The real game class has to derive from this class
+ */
+class GameInterface {
+public:
+	/// create a new game singleton
+	GameInterface();
+	/// destroy the game singleton
+	virtual ~GameInterface();
+
+	/// initialize the game
+	virtual void init() = 0;
+
+	/// shutdown the game
+	virtual void shutdown() = 0;
+
+	/// run one frame of the game
+	/** @param sec time since the previous frame, in seconds
+	 */
+	virtual void frame (float sec) = 0;
+
+	/// a pointer to the current game instance
+	static GameInterface * instance();
+
+private:
+	/// game singleton
+	static GameInterface *gameinterface_instance;
+};
+
+}
+
+#endif // __INCLUDED_CORE_GAMEINTERFACE_H__