git.mutantstargoat.com Git - gbajam22/blob - src/ctrlscr.c

   1 #include "game.h"
   2 #include "data.h"
   3 #include "gba.h"
   4 #include "util.h"
   5 #include "dma.h"
   6 #include "input.h"
   7 #include "debug.h"
   8
   9 static int ctrlscr_start(void);
  10 static void ctrlscr_stop(void);
  11 static void ctrlscr_frame(void);
  12 static void ctrlscr_vblank(void);
  13
  14 static struct screen ctrlscr = {
  15         "controls",
  16         ctrlscr_start,
  17         ctrlscr_stop,
  18         ctrlscr_frame,
  19         ctrlscr_vblank
  20 };
  21
  22 struct screen *init_controls_screen(void)
  23 {
  24         return &ctrlscr;
  25 }
  26
  27 static void setup_palette(void)
  28 {
  29         int i;
  30         unsigned char *cmap = gba_colors ? controls_gba_cmap : controls_cmap;
  31
  32         for(i=0; i<256; i++) {
  33                 int r = cmap[i * 3];
  34                 int g = cmap[i * 3 + 1];
  35                 int b = cmap[i * 3 + 2];
  36                 gba_bgpal[i] = RGB555(r, g, b);
  37         }
  38 }
  39
  40 static int ctrlscr_start(void)
  41 {
  42         gba_setmode(4, DISPCNT_BG2 | DISPCNT_OBJ);
  43         dma_copy16(3, gba_vram_lfb0, controls_pixels, 240 * 160 / 2, 0);
  44
  45         setup_palette();
  46         return 0;
  47 }
  48
  49 static void ctrlscr_stop(void)
  50 {
  51         wait_vblank();
  52 }
  53
  54 static void ctrlscr_frame(void)
  55 {
  56         update_keyb();
  57
  58         if(KEYPRESS(BN_START) || KEYPRESS(BN_A) || KEYPRESS(BN_B)) {
  59                 change_screen(find_screen("menu"));
  60                 return;
  61         }
  62
  63         wait_vblank();
  64 }
  65
  66 static void ctrlscr_vblank(void)
  67 {
  68 }