git.mutantstargoat.com Git - dosdemo/blob - src/demo.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <math.h>
   5 #include <errno.h>
   6 #include "demo.h"
   7 #include "screen.h"
   8
   9 int fb_width = 320;
  10 int fb_height = 240;
  11 int fb_bpp = 16;
  12 void *fb_pixels;
  13 unsigned long time_msec;
  14 int mouse_x, mouse_y;
  15 unsigned int mouse_bmask;
  16
  17 static unsigned long nframes;
  18 static const char *start_scr_name = "tunnel";
  19
  20 int demo_init(int argc, char **argv)
  21 {
  22         if(argv[1]) {
  23                 start_scr_name = argv[1];
  24         }
  25
  26         if(scr_init() == -1) {
  27                 return -1;
  28         }
  29         if(scr_change(scr_lookup(start_scr_name), 4000) == -1) {
  30                 fprintf(stderr, "screen %s not found\n", start_scr_name);
  31                 return -1;
  32         }
  33
  34         return 0;
  35 }
  36
  37 void demo_cleanup(void)
  38 {
  39         scr_shutdown();
  40
  41         if(time_msec) {
  42                 float fps = (float)nframes / ((float)time_msec / 1000.0f);
  43                 printf("average framerate: %.1f\n", fps);
  44         }
  45 }
  46
  47 void demo_draw(void)
  48 {
  49         scr_update();
  50         scr_draw();
  51
  52         ++nframes;
  53 }
  54
  55 void demo_keyboard(int key, int state)
  56 {
  57         if(state) {
  58                 switch(key) {
  59                 case 27:
  60                         demo_quit();
  61                         break;
  62
  63                 default:
  64                         break;
  65                 }
  66         }
  67 }