#include "util.h"
#include "dma.h"
#include "input.h"
+#include "sprite.h"
#include "debug.h"
+enum {
+ MENU_START,
+ MENU_CTRL,
+ MENU_COLORS,
+ MENU_SCORE,
+
+ NUM_MENU_ITEMS
+};
+
static int menuscr_start(void);
static void menuscr_stop(void);
static void menuscr_frame(void);
menuscr_vblank
};
+static int num_vbl;
+static int cur_x, cur_y;
+static int sel;
+static int running;
+
+static const short pos[][2] = {{76, 88}, {87, 108}, {29, 128}, {75, 148}};
+#define CUR_XOFFS 16
+
struct screen *init_menu_screen(void)
{
return &menuscr;
}
+static void setup_palette(void)
+{
+ int i;
+ unsigned char *cmap = gba_colors ? menuscr_gba_cmap : menuscr_cmap;
+
+ for(i=0; i<256; i++) {
+ int r = cmap[i * 3];
+ int g = cmap[i * 3 + 1];
+ int b = cmap[i * 3 + 2];
+ gba_bgpal[i] = RGB555(r, g, b);
+ }
+}
+
static int menuscr_start(void)
{
- gba_setmode(3, DISPCNT_BG2);
- dma_copy16(3, gba_vram_lfb0, menuscr_pixels, 240 * 160, 0);
+ gba_setmode(4, DISPCNT_BG2 | DISPCNT_OBJ);
+ dma_copy16(3, gba_vram_lfb0, menuscr_pixels, 240 * 160 / 2, 0);
+
+ setup_palette();
+
+ spr_setup(16, 4, spr_menu_pixels, spr_menu_cmap);
+
+ wait_vblank();
+ spr_clear();
+
+ cur_x = pos[0][0] - CUR_XOFFS;
+ cur_y = pos[0][1];
+
+ running = 1;
return 0;
}
static void menuscr_stop(void)
{
+ running = 0;
+ wait_vblank();
+ spr_clear();
}
static void menuscr_frame(void)
{
update_keyb();
- if(KEYPRESS(BN_START)) {
+ if(KEYPRESS(BN_START) || (sel == 0 && KEYPRESS(BN_A))) {
change_screen(find_screen("game"));
+ return;
+ }
+
+ if(KEYPRESS(BN_DOWN) && sel <= NUM_MENU_ITEMS) {
+ cur_x = pos[++sel][0] - CUR_XOFFS;
+ cur_y = pos[sel][1];
+ }
+ if(KEYPRESS(BN_UP) && sel > 0) {
+ cur_x = pos[--sel][0] - CUR_XOFFS;
+ cur_y = pos[sel][1];
}
+ if((KEYPRESS(BN_LEFT) || KEYPRESS(BN_RIGHT)) && sel == MENU_COLORS) {
+ gba_colors ^= 1;
+ setup_palette();
+ }
+
+ wait_vblank();
}
+static const int curspr[] = {
+ SPRID(0, 0), SPRID(32, 0), SPRID(64, 0), SPRID(96, 0),
+ SPRID(0, 16), SPRID(32, 16), SPRID(64, 16), SPRID(96, 16)
+};
+
+#define MENU_COLOR_FBPTR (void*)(VRAM_LFB_FB0_ADDR + 117 * 240)
+
static void menuscr_vblank(void)
{
+ int anm, frm;
+ unsigned int flags = SPR_SZ32 | SPR_HRECT | SPR_256COL;
+ void *src;
+
+ if(!running) return;
+
+ anm = (num_vbl++ >> 3) & 0xf;
+ frm = anm & 7;
+
+ if(anm >= 8) flags |= SPR_VFLIP;
+
+ spr_oam(0, 0, curspr[frm], cur_x - 16, cur_y - 8, flags);
+
+ src = menuscr_pixels + (gba_colors ? 160 : 117) * 240;
+ dma_copy32(3, MENU_COLOR_FBPTR, src, 16 * 240 / 4, 0);
}