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 #include "logger.h"
  11
  12 static int quit;
  13 static int use_mouse;
  14 static long fbsize;
  15
  16 int main(int argc, char **argv)
  17 {
  18         fbsize = fb_width * fb_height * fb_bpp / CHAR_BIT;
  19
  20         init_logger("demo.log");
  21
  22         init_timer(100);
  23         kb_init(32);
  24
  25         if((use_mouse = have_mouse())) {
  26                 set_mouse_limits(0, 0, fb_width, fb_height);
  27                 set_mouse(fb_width / 2, fb_height / 2);
  28         }
  29
  30         if(!(fb_pixels = malloc(fbsize))) {
  31                 fprintf(stderr, "failed to allocate backbuffer\n");
  32                 return 1;
  33         }
  34
  35         if(!(vmem_front = set_video_mode(fb_width, fb_height, fb_bpp))) {
  36                 return 1;
  37         }
  38         /* TODO implement multiple video memory pages for flipping */
  39         vmem_back = vmem_front;
  40
  41         if(demo_init(argc, argv) == -1) {
  42                 set_text_mode();
  43                 return 1;
  44         }
  45         reset_timer();
  46
  47         while(!quit) {
  48                 int key;
  49                 while((key = kb_getkey()) != -1) {
  50                         demo_keyboard(key, 1);
  51                 }
  52                 if(quit) goto break_evloop;
  53
  54                 if(use_mouse) {
  55                         mouse_bmask = read_mouse(&mouse_x, &mouse_y);
  56                 }
  57
  58                 time_msec = get_msec();
  59                 demo_draw();
  60         }
  61
  62 break_evloop:
  63         set_text_mode();
  64         demo_cleanup();
  65         kb_shutdown();
  66         return 0;
  67 }
  68
  69 void demo_quit(void)
  70 {
  71         quit = 1;
  72 }
  73
  74 void swap_buffers(void *pixels)
  75 {
  76         /* TODO implement page flipping */
  77         if(pixels) {
  78                 /*wait_vsync();*/
  79                 drawFps(pixels);
  80                 memcpy(vmem_front, pixels, fbsize);
  81         } else {
  82                 drawFps(vmem_back);
  83         }
  84 }