engine.h

extern bool start_engine();
extern void wait_engine();

extern void engine_lock();
extern void engine_unlock();
extern bool engine_ready();
extern void engine_ShowMouse( ULONG enable );
extern void engine_add_vbl_Interrupt( void (*fn) VBL_FUNC_ARGS, void *custom );
extern void engine_remove_vbl_Interrupt( void (*fn) VBL_FUNC_ARGS );

void engine_draw_vbl_Interrupts();
void engine_draw_bobs_and_do_vbl();

extern void set_default_colors( struct retroScreen *screen );
extern void clear_cursor( struct retroScreen *screen );
extern void draw_cursor( struct retroScreen *screen );
extern void atomic_add_key( ULONG eventCode, ULONG Code, ULONG Qualifier, char Char );
extern void run_amal_scripts();

extern uint32_t engine_update_flags ;

extern bool synchro_on;

#define hardware_left 128
#define hardware_top 50

#ifdef __amigaos4__
extern Process *EngineTask;
#endif

enum
{
	GID_ICONIFY = 1,
	GID_FULLSCREEN,
	GID_PREFS
};

enum
{
	kitty_to_back = 1,
	kitty_to_front,
	kitty_limit_mouse
};

enum
{
	kitty_key_up,
	kitty_key_down
};

struct keyboard_buffer
{
	ULONG event;
	ULONG Code;
	ULONG Qualifier;
	char	Char;
};

struct amos_selected
{
	ULONG menu;
	ULONG item;
	ULONG sub;
};

struct amosMenuItem
{
	int levels;
	int index[3];
	char *str;
	char *key;
	unsigned short scancode;
	unsigned short qualifier;
	bool active;
};

struct kittyVblInterrupt
{
	void (*fn) VBL_FUNC_ARGS;
	void *custom;
};

#define to_Engine_X(x) ((x - hardware_left) * 2)
#define to_Engine_Y(y) ((y - hardware_top) * 2)

#define from_Engine_X(x) ((x /2) + hardware_left)
#define from_Engine_Y(y) ((y/2) + hardware_top)

#define hw_mouse_x get_mouse_hw_x()
#define hw_mouse_y  get_mouse_hw_y()

#define XSprite_formula(x) to_Engine_X(x)
#define YSprite_formula(y) to_Engine_Y(y)
#define from_XSprite_formula(x) from_Engine_X(x)
#define from_YSprite_formula(y) from_Engine_Y(y)

extern int get_mouse_hw_x();
extern int get_mouse_hw_y();