#ifndef _HARDWARE_H_
#define _HARDWARE_H_

/** 3DGPL *************************************************\
 *  (NeXTStep, 8bit deep bitmaps, 32bit mashine)          *     
 *  Header for hardware specific stuff.                   *
 *                                                        *
 *  hardware.c               hardware specific stuff.     *
 *                                                        *
 *  (6/1995) By Sergei Savhenko. (savs@cs.mcgill.ca).     *
 *  Copyright (c) 1995 Sergei Savchenko.                  *
 *  THIS SOURCE CODE CAN'T BE USED FOR COMERCIAL PURPOSES *
 *  WITHOUT AUTHORISATION                                 *
\**********************************************************/

#include <string.h>                         /* memset etc. */

typedef short signed_16_bit;
typedef int   signed_32_bit;                /* compiler/mashine dependent */
typedef unsigned short unsigned_16_bit;
typedef unsigned int   unsigned_32_bit;

void HW_set_int(int *dst,long lng,int val);
#define HW_set_char(dst,lng,val)  memset(dst,val,lng)
#define HW_copy_int(src,dst,lng)  memcpy(dst,src,lng*sizeof(int))
#define HW_copy_char(src,dst,lng) memcpy(dst,src,lng)

#define HW_SCREEN_X_SIZE            320             
#define HW_SCREEN_Y_SIZE            200     /* number of pixels total */

#define HW_SCREEN_X_MAX             319
#define HW_SCREEN_Y_MAX             199     /* number of maximum pixel */

#define HW_SCREEN_X_CENTRE          160     
#define HW_SCREEN_Y_CENTRE          100     /* middle of the screen */

#define HW_COLOURMAP_SIZE_CHAR    64000     /* bytes in the colourmap */
#define HW_COLOURMAP_SIZE_INT     16000     /* ints in the colourmap */

struct HW_colour                            /* describes colour */
{
 int hw_r;
 int hw_g;
 int hw_b;                                  /* intensity components */
};

int HW_open_screen(char *display_name,
                   char *screen_name, 
                   struct HW_colour palette[256],
                   unsigned char *colourmap
                  );
void HW_blit(void);
void HW_close_screen(void);

#define HW_KEY_ARROW_LEFT  172
#define HW_KEY_ARROW_RIGHT 174
#define HW_KEY_ARROW_UP    173
#define HW_KEY_ARROW_DOWN  175

#define HW_KEY_PLUS         43
#define HW_KEY_MINUS        45

#define HW_KEY_ENTER        13
#define HW_KEY_SPACE        32
#define HW_KEY_TAB           9              /* all i can think of */ 

void HW_run_event_loop(void (*application_main)(void),
                       void (*application_key_handler)(int key_code)
                      );
void HW_quit_event_loop(void);

/**********************************************************/

#endif