git.mutantstargoat.com Git - eradicate/blob - src/introscr.c

   1 #include <stdio.h>
   2 #include "screens.h"
   3 #include "imago2.h"
   4 #include "gfx.h"
   5 #include "gfxutil.h"
   6 #include "game.h"
   7
   8 #define FADE_DUR        1024
   9
  10 static void *logo;
  11 static int logo_width, logo_height;
  12 static long start_time;
  13
  14 int intro_init(void)
  15 {
  16         if(!(logo = img_load_pixels("data/msglogo.jpg", &logo_width, &logo_height, IMG_FMT_RGB24))) {
  17                 fprintf(stderr, "failed to load logo image\n");
  18                 return -1;
  19         }
  20         return 0;
  21 }
  22
  23 void intro_cleanup(void)
  24 {
  25         img_free_pixels(logo);
  26 }
  27
  28 void intro_start(void)
  29 {
  30         start_time = time_msec;
  31 }
  32
  33 void intro_stop(void)
  34 {
  35 }
  36
  37 void intro_draw(void)
  38 {
  39         int i, j;
  40         uint16_t fade;
  41         unsigned char *src = logo;
  42         uint16_t *dest = fb_pixels;
  43
  44         fade = (time_msec - start_time) * 256 / FADE_DUR;
  45         if(fade > 256) fade = 256;
  46
  47         for(i=0; i<fb_height; i++) {
  48                 for(j=0; j<fb_width; j++) {
  49                         uint16_t r = (uint16_t)*src++ * fade / 256;
  50                         uint16_t g = (uint16_t)*src++ * fade / 256;
  51                         uint16_t b = (uint16_t)*src++ * fade / 256;
  52                         *dest++ = PACK_RGB16(r, g, b);
  53                         src += 3;
  54                 }
  55         }
  56 }
  57
  58 void intro_keyb(int key, int pressed)
  59 {
  60 }