Merge pull request #2164 from cawtds/shop-menu-palette

Document shop menu palette

Author: GriffinRichards

src/shop.c

@@ -43,6 +43,7 @@
 #define TAG_ITEM_ICON_BASE 2110
 
 #define MAX_ITEMS_SHOWN 8
+#define SHOP_MENU_PALETTE_ID 12
 
 enum {
     WIN_BUY_SELL_QUIT,
@@ -740,7 +741,7 @@ static void BuyMenuDecompressBgGraphics(void)
 {
     DecompressAndCopyTileDataToVram(1, gShopMenu_Gfx, 0x3A0, 0x3E3, 0);
     LZDecompressWram(gShopMenu_Tilemap, sShopData->tilemapBuffers[0]);
-    LoadCompressedPalette(gShopMenu_Pal, BG_PLTT_ID(12), PLTT_SIZE_4BPP);
+    LoadCompressedPalette(gShopMenu_Pal, BG_PLTT_ID(SHOP_MENU_PALETTE_ID), PLTT_SIZE_4BPP);
 }
 
 static void BuyMenuInitWindows(void)
@@ -941,7 +942,7 @@ static void BuyMenuCopyMenuBgToBg1TilemapBuffer(void)
     for (i = 0; i < 1024; i++)
     {
         if (src[i] != 0)
-            dest[i] = src[i] + 0xC3E3;
+            dest[i] = src[i] + ((SHOP_MENU_PALETTE_ID << 12) | 0x3E3);
     }
 }