git.mutantstargoat.com Git - dosdemo/blob - src/dos/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <limits.h>
   5 #include "demo.h"
   6 #include "keyb.h"
   7 #include "mouse.h"
   8 #include "timer.h"
   9 #include "gfx.h"
  10
  11 static int quit;
  12 static int use_mouse;
  13 static long fbsize;
  14
  15 int main(int argc, char **argv)
  16 {
  17         fbsize = fb_width * fb_height * fb_bpp / CHAR_BIT;
  18
  19         init_timer(100);
  20         kb_init(32);
  21
  22         if((use_mouse = have_mouse())) {
  23                 set_mouse_limits(0, 0, fb_width, fb_height);
  24                 set_mouse(fb_width / 2, fb_height / 2);
  25         }
  26
  27         if(!(fb_pixels = malloc(fbsize))) {
  28                 fprintf(stderr, "failed to allocate backbuffer\n");
  29                 return 1;
  30         }
  31
  32         if(!(vmem_front = set_video_mode(fb_width, fb_height, fb_bpp))) {
  33                 return 1;
  34         }
  35         /* TODO implement multiple video memory pages for flipping */
  36         vmem_back = vmem_front;
  37
  38         if(demo_init(argc, argv) == -1) {
  39                 set_text_mode();
  40                 return 1;
  41         }
  42         reset_timer();
  43
  44         while(!quit) {
  45                 int key;
  46                 while((key = kb_getkey()) != -1) {
  47                         demo_keyboard(key, 1);
  48                 }
  49                 if(quit) goto break_evloop;
  50
  51                 if(use_mouse) {
  52                         mouse_bmask = read_mouse(&mouse_x, &mouse_y);
  53                 }
  54
  55                 time_msec = get_msec();
  56                 demo_draw();
  57         }
  58
  59 break_evloop:
  60         set_text_mode();
  61         demo_cleanup();
  62         kb_shutdown();
  63         return 0;
  64 }
  65
  66 void demo_quit(void)
  67 {
  68         quit = 1;
  69 }
  70
  71 void swap_buffers(void *pixels)
  72 {
  73         /* TODO implement page flipping */
  74         if(pixels) {
  75                 /*wait_vsync();*/
  76                 memcpy(vmem_front, pixels, fbsize);
  77         }
  78 }