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 #include "timer.h"
   9
  10 static int ctrlscr_start(void);
  11 static void ctrlscr_stop(void);
  12 static void ctrlscr_frame(void);
  13 static void ctrlscr_vblank(void);
  14
  15 static struct screen ctrlscr = {
  16         "controls",
  17         ctrlscr_start,
  18         ctrlscr_stop,
  19         ctrlscr_frame,
  20         ctrlscr_vblank
  21 };
  22
  23 struct screen *init_controls_screen(void)
  24 {
  25         return &ctrlscr;
  26 }
  27
  28 static void setup_palette(void)
  29 {
  30         int i;
  31         unsigned char *cmap = gba_colors ? controls_gba_cmap : controls_cmap;
  32
  33         for(i=0; i<256; i++) {
  34                 int r = cmap[i * 3];
  35                 int g = cmap[i * 3 + 1];
  36                 int b = cmap[i * 3 + 2];
  37                 gba_bgpal[i] = RGB555(r, g, b);
  38         }
  39 }
  40
  41 static int ctrlscr_start(void)
  42 {
  43         gba_setmode(4, DISPCNT_BG2 | DISPCNT_OBJ);
  44         dma_copy16(3, gba_vram_lfb0, controls_pixels, 240 * 160 / 2, 0);
  45
  46         setup_palette();
  47         return 0;
  48 }
  49
  50 static void ctrlscr_stop(void)
  51 {
  52         wait_vblank();
  53 }
  54
  55 static void ctrlscr_frame(void)
  56 {
  57         update_keyb();
  58
  59         if(KEYPRESS(BN_START) || KEYPRESS(BN_A) || KEYPRESS(BN_B)) {
  60                 change_screen(find_screen("menu"));
  61                 delay(250);
  62                 return;
  63         }
  64
  65         wait_vblank();
  66 }
  67
  68 static void ctrlscr_vblank(void)
  69 {
  70 }