#ifndef		__DEMO_TRANSITION_H__
#define		__DEMO_TRANSITION_H__

#include <allegro.h>
#include "gmestate.h"		/* gamestate.h */


typedef struct TRANSITION {
   GAMESTATE *from;
   GAMESTATE *to;
   float duration;
   float progress;
   BITMAP *from_bmp;
   BITMAP *to_bmp;
} TRANSITION;


TRANSITION *create_transition(GAMESTATE * from, GAMESTATE * to,
			      float duration);
void destroy_transition(TRANSITION * t);
int update_transition(TRANSITION * t);
void draw_transition(BITMAP * canvas, TRANSITION * t);

#endif				/* __DEMO_TRANSITION_H__ */