Merge pull request #352 from huderlem/shop

[WIP] Shop

data/shop.s

@@ -53,9 +53,10 @@ gUnknown_08589AA8:: @ 8589AA8
 
 gUnknown_08589AB0:: @ 8589AB0
 	.byte 1, 2, 3
+	.byte 0, 2, 3
+	.byte 0, 3, 2
 
-gUnknown_08589AB3:: @ 8589AB3
+	.align 1
-	.byte 0, 2, 3, 0, 3, 2, 0
 
 gUnknown_08589ABA:: @ 8589ABA
 	.2byte 0x284, 0x282, 0x280

include/battle_pyramid_bag.h

@@ -11,7 +11,7 @@ struct PyramidBagResources
     u8 windowIds[5];
     u8 unk814;
     u8 unk815;
-    u8 scrollArrowSpriteId;
+    u8 scrollIndicatorsTaskId;
     const u8 *menuActionIds;
     u8 filler81C[0x820 - 0x81C];
     u8 menuActionsCount;

include/shop.h

@@ -3,6 +3,42 @@
 
 extern EWRAM_DATA struct ItemSlot gUnknown_02039F80[3];
 
+enum
+{
+    MART_TYPE_0, // normal mart
+    MART_TYPE_1,
+    MART_TYPE_2,
+};
+
+struct MartInfo
+{
+    /*0x0*/ void (* callback) (void);
+    /*0x4*/ const struct MenuAction *menuActions;
+    /*0x8*/ const u16 *itemList;
+    /*0xC*/ u16 itemCount;
+    /*0xE*/ u8 windowId;
+    /*0xF*/ u8 martType;
+};
+
+struct BuyMenuLabel
+{
+	u8 label[16];
+};
+
+struct ShopData
+{
+	/*0x0000*/ u8 tilemapBuffers[4][0x800];
+	/*0x2000*/ u8 filler2000[0x4];
+	/*0x2004*/ u16 unk2004;
+	/*0x2006*/ u8 filler2006[0x2];
+	/*0x2008*/ u16 unk2008;
+	/*0x200A*/ u8 filler200A;
+	/*0x200B*/ u8 scrollIndicatorsTaskId;
+	/*0x200C*/ u8 unk200C;
+	/*0x200D*/ u8 unk200D[2];
+	/*0x200F*/ u8 filler200F[0xA1];
+};
+
 void CreatePokemartMenu(const u16 *);
 void CreateDecorationShop1Menu(const u16 *);
 void CreateDecorationShop2Menu(const u16 *);

include/strings.h

@@ -151,8 +151,6 @@ extern const u8 gMenuText_Confirm[];
 extern const u8 gMenuText_Show[];
 extern const u8 gMenuText_Give2[];
 
-extern const u8 gText_Cancel2[];
-
 extern const u8 gText_WithdrawPokemon[];
 extern const u8 gText_WithdrawMonDescription[];
 extern const u8 gText_DepositPokemon[];
@@ -853,4 +851,9 @@ extern const u8 gText_CopperCard[];
 extern const u8 gText_SilverCard[];
 extern const u8 gText_GoldCard[];
 
+extern const u8 gText_CanIHelpWithAnythingElse[];
+extern const u8 gText_AnythingElseICanHelp[];
+extern const u8 gText_QuitShopping[];
+extern const u8 gText_PokedollarVar1[];
+
 #endif //GUARD_STRINGS_H

include/tv.h

@@ -50,5 +50,6 @@ void PutBattleUpdateOnTheAir(u8 opponentLinkPlayerId, u16 move, u16 speciesPlaye
 void BravoTrainerPokemonProfile_BeforeInterview1(u16 move);
 void UpdateTVScreensOnMap(int, int);
 void TV_PrintIntToStringVar(u8 varIdx, int value);
+void SaveRecordedItemPurchasesForTVShow(void);
 
 #endif //GUARD_TV_H

ld_script.txt

@@ -137,6 +137,7 @@ SECTIONS {
         src/item.o(.text);
         src/contest.o(.text);
         asm/contest.o(.text);
+        src/shop.o(.text);
         asm/shop.o(.text);
         src/berry.o(.text);
         asm/script_menu.o(.text);

src/battle_pyramid_bag.c

@@ -396,7 +396,7 @@ void sub_81C4F98(u8 a0, void (*callback)(void))
 
     gPyramidBagResources->callback2 = NULL;
     gPyramidBagResources->unk814 = 0xFF;
-    gPyramidBagResources->scrollArrowSpriteId = 0xFF;
+    gPyramidBagResources->scrollIndicatorsTaskId = 0xFF;
 
     memset(gPyramidBagResources->itemsSpriteIds, 0xFF, sizeof(gPyramidBagResources->itemsSpriteIds));
     memset(gPyramidBagResources->windowIds, 0xFF, sizeof(gPyramidBagResources->windowIds));
@@ -664,16 +664,16 @@ static void PrintItemDescription(s32 listMenuId)
 
 static void AddScrollArrow(void)
 {
-    if (gPyramidBagResources->scrollArrowSpriteId == 0xFF)
+    if (gPyramidBagResources->scrollIndicatorsTaskId == 0xFF)
-        gPyramidBagResources->scrollArrowSpriteId = AddScrollIndicatorArrowPairParameterized(2, 172, 12, 148, gPyramidBagResources->listMenuCount - gPyramidBagResources->listMenuMaxShown, 0xB5E, 0xB5E, &gPyramidBagCursorData.scrollPosition);
+        gPyramidBagResources->scrollIndicatorsTaskId = AddScrollIndicatorArrowPairParameterized(2, 172, 12, 148, gPyramidBagResources->listMenuCount - gPyramidBagResources->listMenuMaxShown, 0xB5E, 0xB5E, &gPyramidBagCursorData.scrollPosition);
 }
 
 static void RemoveScrollArrow(void)
 {
-    if (gPyramidBagResources->scrollArrowSpriteId != 0xFF)
+    if (gPyramidBagResources->scrollIndicatorsTaskId != 0xFF)
     {
-        RemoveScrollIndicatorArrowPair(gPyramidBagResources->scrollArrowSpriteId);
+        RemoveScrollIndicatorArrowPair(gPyramidBagResources->scrollIndicatorsTaskId);
-        gPyramidBagResources->scrollArrowSpriteId = 0xFF;
+        gPyramidBagResources->scrollIndicatorsTaskId = 0xFF;
     }
 }
 

src/money.c

@@ -6,10 +6,9 @@
 #include "menu.h"
 #include "window.h"
 #include "sprite.h"
+#include "strings.h"
 #include "decompress.h"
 
-extern const u8 gText_PokedollarVar1[];
-
 extern const u8 gMenuMoneyGfx[];
 extern const u8 gMenuMoneyPal[];
 

src/shop.c

@@ -0,0 +1,679 @@
+#include "global.h"
+#include "bg.h"
+#include "decompress.h"
+#include "decoration.h"
+#include "field_player_avatar.h"
+#include "field_screen.h"
+#include "field_weather.h"
+#include "fieldmap.h"
+#include "gpu_regs.h"
+#include "international_string_util.h"
+#include "item.h"
+#include "item_icon.h"
+#include "list_menu.h"
+#include "main.h"
+#include "malloc.h"
+#include "menu.h"
+#include "menu_helpers.h"
+#include "money.h"
+#include "overworld.h"
+#include "palette.h"
+#include "scanline_effect.h"
+#include "script.h"
+#include "shop.h"
+#include "sound.h"
+#include "sprite.h"
+#include "string_util.h"
+#include "strings.h"
+#include "text_window.h"
+#include "tv.h"
+#include "constants/rgb.h"
+#include "constants/songs.h"
+
+extern struct ShopData *gShopDataPtr;
+extern struct ListMenuItem *gUnknown_02039F74;
+extern u8 (*gUnknown_02039F78)[16];
+extern struct MartInfo gMartInfo;
+
+extern const struct WindowTemplate gUnknown_08589A38[2];
+extern const struct MenuAction gUnknown_08589A10[3];
+extern const struct MenuAction gUnknown_08589A28[2];
+extern const struct ListMenuTemplate gUnknown_08589A48;
+extern const struct BgTemplate gUnknown_08589A60[4];
+extern const u8 gBuyMenuFrame_Gfx[];
+extern const u8 gBuyMenuFrame_Tilemap[];
+extern const u16 gMenuMoneyPal[];
+extern const struct WindowTemplate gUnknown_08589A70[];
+extern u8 gUnknown_08589AB0[][3];
+
+static void Task_ShopMenu(u8 taskId);
+void HandleShopMenuQuit(u8 taskId);
+void CB2_InitBuyMenu(void);
+static void Task_GoToBuyOrSellMenu(u8 taskId);
+void CB2_GoToSellMenu(void);
+void MapPostLoadHook_ExitBuyOrSellMenu(void);
+void Task_ExitSellMenu(u8 taskId);
+void ReturnToShopMenuAfterExitingSellMenu(u8 taskId);
+void BuyMenuDrawGraphics(void);
+void BuyMenuAddScrollIndicatorArrows(void);
+void Task_BuyMenu(u8 taskId);
+void BuyMenuBuildListMenuTemplate(void);
+void BuyMenuInitBgs(void);
+void BuyMenuInitWindows(void);
+void BuyMenuDecompressBgGraphics(void);
+void BuyMenuSetListEntry(struct ListMenuItem*, u16, u8*);
+void BuyMenuAddItemIcon(u16, u8);
+void BuyMenuRemoveItemIcon(u16, u8);
+void BuyMenuPrint(u8 windowId, const u8 *text, u8 x, u8 y, s8 speed, u8 colorSet);
+void BuyMenuDrawMapGraphics(void);
+void BuyMenuCopyMenuBgToBg1TilemapBuffer(void);
+void BuyMenuCollectEventObjectData(void);
+void BuyMenuDrawEventObjects(void);
+void BuyMenuDrawMapBg(void);
+bool8 BuyMenuCheckForOverlapWithMenuBg(u16, u16);
+void BuyMenuDrawMapMetatile(s16, s16, u16*, u8);
+
+
+/*static*/ u8 CreateShopMenu(u8 martType)
+{
+    int numMenuItems;
+
+    ScriptContext2_Enable();
+    gMartInfo.martType = martType;
+
+    if (martType == MART_TYPE_0)
+    {
+        struct WindowTemplate winTemplate;
+        winTemplate = gUnknown_08589A38[0];
+        winTemplate.width = GetMaxWidthInMenuTable(gUnknown_08589A10, ARRAY_COUNT(gUnknown_08589A10));
+        gMartInfo.windowId = AddWindow(&winTemplate);
+        gMartInfo.menuActions = gUnknown_08589A10;
+        numMenuItems = ARRAY_COUNT(gUnknown_08589A10);
+    }
+    else
+    {
+        struct WindowTemplate winTemplate;
+        winTemplate = gUnknown_08589A38[1];
+        winTemplate.width = GetMaxWidthInMenuTable(gUnknown_08589A28, ARRAY_COUNT(gUnknown_08589A28));
+        gMartInfo.windowId = AddWindow(&winTemplate);
+        gMartInfo.menuActions = gUnknown_08589A28;
+        numMenuItems = ARRAY_COUNT(gUnknown_08589A28);
+    }
+
+    SetStandardWindowBorderStyle(gMartInfo.windowId, 0);
+    PrintMenuTable(gMartInfo.windowId, numMenuItems, gMartInfo.menuActions);
+    InitMenuInUpperLeftCornerPlaySoundWhenAPressed(gMartInfo.windowId, numMenuItems, 0);
+    PutWindowTilemap(gMartInfo.windowId);
+    CopyWindowToVram(gMartInfo.windowId, 1);
+
+    return CreateTask(Task_ShopMenu, 8);
+}
+
+/*static*/ void SetShopMenuCallback(void (* callback)(void))
+{
+    gMartInfo.callback = callback;
+}
+
+/*static*/ void SetShopItemsForSale(const u16 *items)
+{
+    u16 i = 0;
+
+    gMartInfo.itemList = items;
+    gMartInfo.itemCount = 0;
+
+    while (gMartInfo.itemList[i])
+    {
+        gMartInfo.itemCount++;
+        i++;
+    }
+}
+
+static void Task_ShopMenu(u8 taskId)
+{
+    s8 inputCode = Menu_ProcessInputNoWrapAround();
+    switch (inputCode)
+    {
+    case -2:
+        break;
+    case -1:
+        PlaySE(SE_SELECT);
+        HandleShopMenuQuit(taskId);
+        break;
+    default:
+        gMartInfo.menuActions[inputCode].func.void_u8(taskId);
+        break;
+    }
+}
+
+void HandleShopMenuBuy(u8 taskId)
+{
+    s16 *taskData = gTasks[taskId].data;
+    taskData[8] = (u32)CB2_InitBuyMenu >> 16;
+    taskData[9] = (u32)CB2_InitBuyMenu;
+    gTasks[taskId].func = Task_GoToBuyOrSellMenu;
+    FadeScreen(1, 0);
+}
+
+void HandleShopMenuSell(u8 taskId)
+{
+    s16 *taskData = gTasks[taskId].data;
+    taskData[8] = (u32)CB2_GoToSellMenu >> 16;
+    taskData[9] = (u32)CB2_GoToSellMenu;
+    gTasks[taskId].func = Task_GoToBuyOrSellMenu;
+    FadeScreen(1, 0);
+}
+
+void CB2_ExitSellMenu(void)
+{
+    gFieldCallback = MapPostLoadHook_ExitBuyOrSellMenu;
+    SetMainCallback2(CB2_ReturnToField);
+}
+
+/*static*/ void HandleShopMenuQuit(u8 taskId)
+{
+    sub_8198070(gMartInfo.windowId, 2);
+    RemoveWindow(gMartInfo.windowId);
+    SaveRecordedItemPurchasesForTVShow();
+    ScriptContext2_Disable();
+    DestroyTask(taskId);
+
+    if (gMartInfo.callback)
+        gMartInfo.callback();
+}
+
+static void Task_GoToBuyOrSellMenu(u8 taskId)
+{
+    s16 *taskData = gTasks[taskId].data;
+    if (!gPaletteFade.active)
+    {
+        DestroyTask(taskId);
+        SetMainCallback2((void *)((u16)taskData[8] << 16 | (u16)taskData[9]));
+    }
+}
+
+void MapPostLoadHook_ExitBuyOrSellMenu(void)
+{
+    pal_fill_black();
+    CreateTask(Task_ExitSellMenu, 8);
+}
+
+void Task_ExitSellMenu(u8 taskId)
+{
+    if (IsWeatherNotFadingIn() == TRUE)
+    {
+        if (gMartInfo.martType == MART_TYPE_2)
+            DisplayItemMessageOnField(taskId, gText_CanIHelpWithAnythingElse, ReturnToShopMenuAfterExitingSellMenu);
+        else
+            DisplayItemMessageOnField(taskId, gText_AnythingElseICanHelp, ReturnToShopMenuAfterExitingSellMenu);
+    }
+}
+
+void ReturnToShopMenuAfterExitingSellMenu(u8 taskId)
+{
+    CreateShopMenu(gMartInfo.martType);
+    DestroyTask(taskId);
+}
+
+void CB2_BuyMenu(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    do_scheduled_bg_tilemap_copies_to_vram();
+    UpdatePaletteFade();
+}
+
+void VBlankCB_BuyMenu(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void CB2_InitBuyMenu(void)
+{
+    u8 taskId;
+
+    switch (gMain.state)
+    {
+    case 0:
+        SetVBlankHBlankCallbacksToNull();
+        CpuFastFill(0, (void *)OAM, 0x400);
+        ScanlineEffect_Stop();
+        reset_temp_tile_data_buffers();
+        FreeAllSpritePalettes();
+        ResetPaletteFade();
+        ResetSpriteData();
+        ResetTasks();
+        clear_scheduled_bg_copies_to_vram();
+        gShopDataPtr = AllocZeroed(sizeof(struct ShopData));
+        gShopDataPtr->scrollIndicatorsTaskId = 0xFF;
+        gShopDataPtr->unk200D[0] = -1;
+        gShopDataPtr->unk200D[1] = -1;
+        BuyMenuBuildListMenuTemplate();
+        BuyMenuInitBgs();
+        FillBgTilemapBufferRect_Palette0(0, 0, 0, 0, 0x20, 0x20);
+        FillBgTilemapBufferRect_Palette0(1, 0, 0, 0, 0x20, 0x20);
+        FillBgTilemapBufferRect_Palette0(2, 0, 0, 0, 0x20, 0x20);
+        FillBgTilemapBufferRect_Palette0(3, 0, 0, 0, 0x20, 0x20);
+        BuyMenuInitWindows();
+        BuyMenuDecompressBgGraphics();
+        gMain.state++;
+        break;
+    case 1:
+        if (!free_temp_tile_data_buffers_if_possible())
+            gMain.state++;
+        break;
+    default:
+        BuyMenuDrawGraphics();
+        BuyMenuAddScrollIndicatorArrows();
+        taskId = CreateTask(Task_BuyMenu, 8);
+        gTasks[taskId].data[7] = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
+        BlendPalettes(0xFFFFFFFF, 0x10, RGB_BLACK);
+        BeginNormalPaletteFade(0xFFFFFFFF, 0, 0x10, 0, RGB_BLACK);
+        SetVBlankCallback(VBlankCB_BuyMenu);
+        SetMainCallback2(CB2_BuyMenu);
+        break;
+    }
+}
+
+void BuyMenuFreeMemory(void)
+{
+    Free(gShopDataPtr);
+    Free(gUnknown_02039F74);
+    Free(gUnknown_02039F78);
+    FreeAllWindowBuffers();
+}
+
+void BuyMenuBuildListMenuTemplate(void)
+{
+    u16 i;
+    u16 itemCount;
+
+    gUnknown_02039F74 = Alloc((gMartInfo.itemCount + 1) * sizeof(*gUnknown_02039F74));
+    gUnknown_02039F78 = Alloc((gMartInfo.itemCount + 1) * sizeof(*gUnknown_02039F78));
+    for (i = 0; i < gMartInfo.itemCount; i++)
+        BuyMenuSetListEntry(&gUnknown_02039F74[i], gMartInfo.itemList[i], gUnknown_02039F78[i]);
+
+    StringCopy(gUnknown_02039F78[i], gText_Cancel2);
+    gUnknown_02039F74[i].name = gUnknown_02039F78[i];
+    gUnknown_02039F74[i].id = -2;
+
+    gMultiuseListMenuTemplate = gUnknown_08589A48;
+    gMultiuseListMenuTemplate.items = gUnknown_02039F74;
+    gMultiuseListMenuTemplate.totalItems = gMartInfo.itemCount + 1;
+    if (gMultiuseListMenuTemplate.totalItems > 8)
+        gMultiuseListMenuTemplate.maxShowed = 8;
+    else
+        gMultiuseListMenuTemplate.maxShowed = gMultiuseListMenuTemplate.totalItems;
+
+    gShopDataPtr->unk2004 = gMultiuseListMenuTemplate.maxShowed;
+}
+
+void BuyMenuSetListEntry(struct ListMenuItem *menuItem, u16 item, u8 *name)
+{
+    if (gMartInfo.martType == MART_TYPE_0)
+        CopyItemName(item, name);
+    else
+        StringCopy(name, gDecorations[item].name);
+
+    menuItem->name = name;
+    menuItem->id = item;
+}
+
+void BuyMenuPrintItemDescriptionAndShowItemIcon(int item, bool8 onInit, struct ListMenu *list)
+{
+    const u8 *description;
+    if (onInit != TRUE)
+        PlaySE(SE_SELECT);
+
+    if (item != -2)
+        BuyMenuAddItemIcon(item, gShopDataPtr->unk200C);
+    else
+        BuyMenuAddItemIcon(-1, gShopDataPtr->unk200C);
+
+    BuyMenuRemoveItemIcon(item, gShopDataPtr->unk200C ^ 1);
+    gShopDataPtr->unk200C ^= 1;
+    if (item != -2)
+    {
+        if (gMartInfo.martType == MART_TYPE_0)
+            description = ItemId_GetDescription(item);
+        else
+            description = gDecorations[item].description;
+    }
+    else
+    {
+        description = gText_QuitShopping;
+    }
+
+    FillWindowPixelBuffer(2, 0);
+    BuyMenuPrint(2, description, 3, 1, 0, 0);
+}
+
+void BuyMenuPrintPriceInList(u8 windowId, int item, u8 y)
+{
+    u8 x;
+
+    if (item != -2)
+    {
+        if (gMartInfo.martType == MART_TYPE_0)
+        {
+            ConvertIntToDecimalStringN(
+                gStringVar1,
+                ItemId_GetPrice(item) >> GetPriceReduction(1),
+                STR_CONV_MODE_LEFT_ALIGN,
+                5);
+        }
+        else
+        {
+            ConvertIntToDecimalStringN(
+                gStringVar1,
+                gDecorations[item].price,
+                STR_CONV_MODE_LEFT_ALIGN,
+                5);
+        }
+
+        StringExpandPlaceholders(gStringVar4, gText_PokedollarVar1);
+        x = GetStringRightAlignXOffset(7, gStringVar4, 0x78);
+        AddTextPrinterParameterized4(windowId, 7, x, y, 0, 0, gUnknown_08589AB0[1], -1, gStringVar4);
+    }
+}
+
+void BuyMenuAddScrollIndicatorArrows(void)
+{
+    if (gShopDataPtr->scrollIndicatorsTaskId == 0xFF && gMartInfo.itemCount + 1 > 8)
+    {
+        gShopDataPtr->scrollIndicatorsTaskId = AddScrollIndicatorArrowPairParameterized(
+            SCROLL_ARROW_UP,
+            0xAC,
+            0xC,
+            0x94,
+            gMartInfo.itemCount - 7,
+            0x834,
+            0x834,
+            &gShopDataPtr->unk2008);
+    }
+}
+
+void BuyMenuRemoveScrollIndicatorArrows(void)
+{
+    if (gShopDataPtr->scrollIndicatorsTaskId != 0xFF)
+    {
+        RemoveScrollIndicatorArrowPair(gShopDataPtr->scrollIndicatorsTaskId);
+        gShopDataPtr->scrollIndicatorsTaskId = 0xFF;
+    }
+}
+
+void BuyMenuPrintCursor(u8 scrollIndicatorsTaskId, u8 colorSet)
+{
+    u8 y = ListMenuGetYCoordForPrintingArrowCursor(scrollIndicatorsTaskId);
+    BuyMenuPrint(1, gText_SelectorArrow2, 0, y, 0, colorSet);
+}
+
+void BuyMenuAddItemIcon(u16 item, u8 iconSlot)
+{
+    u8 spriteId;
+    u8 *spriteIdPtr = &gShopDataPtr->unk200D[iconSlot];
+    if (*spriteIdPtr != 0xFF)
+        return;
+
+    if (gMartInfo.martType == MART_TYPE_0 || item == 0xFFFF)
+    {
+        spriteId = AddItemIconSprite(iconSlot + 0x83E, iconSlot + 0x83E, item);
+        if (spriteId != MAX_SPRITES)
+        {
+            *spriteIdPtr = spriteId;
+            gSprites[spriteId].pos2.x = 24;
+            gSprites[spriteId].pos2.y = 88;
+        }
+    }
+    else
+    {
+        spriteId = AddDecorationIconObject(item, 20, 84, 1, iconSlot + 0x83E, iconSlot + 0x83E);
+        if (spriteId != MAX_SPRITES)
+            *spriteIdPtr = spriteId;
+    }
+}
+
+void BuyMenuRemoveItemIcon(u16 item, u8 iconSlot)
+{
+    u8 *spriteIdPtr = &gShopDataPtr->unk200D[iconSlot];
+    if (*spriteIdPtr == 0xFF)
+        return;
+
+    FreeSpriteTilesByTag(iconSlot + 0x83E);
+    FreeSpritePaletteByTag(iconSlot + 0x83E);
+    DestroySprite(&gSprites[*spriteIdPtr]);
+    *spriteIdPtr = 0xFF;
+}
+
+void BuyMenuInitBgs(void)
+{
+    ResetBgsAndClearDma3BusyFlags(0);
+    InitBgsFromTemplates(0, gUnknown_08589A60, ARRAY_COUNT(gUnknown_08589A60));
+    SetBgTilemapBuffer(1, gShopDataPtr->tilemapBuffers[1]);
+    SetBgTilemapBuffer(2, gShopDataPtr->tilemapBuffers[3]);
+    SetBgTilemapBuffer(3, gShopDataPtr->tilemapBuffers[2]);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG3HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG3VOFS, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0 | DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+    ShowBg(0);
+    ShowBg(1);
+    ShowBg(2);
+    ShowBg(3);
+}
+
+void BuyMenuDecompressBgGraphics(void)
+{
+    decompress_and_copy_tile_data_to_vram(1, gBuyMenuFrame_Gfx, 0x3A0, 0x3E3, 0);
+    LZDecompressWram(gBuyMenuFrame_Tilemap, gShopDataPtr->tilemapBuffers[0]);
+    LoadCompressedPalette(gMenuMoneyPal, 0xC0, 0x20);
+}
+
+void BuyMenuInitWindows(void)
+{
+    InitWindows(gUnknown_08589A70);
+    DeactivateAllTextPrinters();
+    LoadUserWindowBorderGfx(0, 1, 0xD0);
+    LoadMessageBoxGfx(0, 0xA, 0xE0);
+    PutWindowTilemap(0);
+    PutWindowTilemap(1);
+    PutWindowTilemap(2);
+}
+
+void BuyMenuPrint(u8 windowId, const u8 *text, u8 x, u8 y, s8 speed, u8 colorSet)
+{
+    AddTextPrinterParameterized4(windowId, 1, x, y, 0, 0, gUnknown_08589AB0[colorSet], speed, text);
+}
+
+void BuyMenuDisplayMessage(u8 taskId, const u8 *text, TaskFunc callback)
+{
+    DisplayMessageAndContinueTask(taskId, 5, 10, 14, 1, GetPlayerTextSpeed(), text, callback);
+    schedule_bg_copy_tilemap_to_vram(0);
+}
+
+void BuyMenuDrawGraphics(void)
+{
+    BuyMenuDrawMapGraphics();
+    BuyMenuCopyMenuBgToBg1TilemapBuffer();
+    AddMoneyLabelObject(19, 11);
+    PrintMoneyAmountInMoneyBoxWithBorder(0, 1, 13, GetMoney(&gSaveBlock1Ptr->money));
+    schedule_bg_copy_tilemap_to_vram(0);
+    schedule_bg_copy_tilemap_to_vram(1);
+    schedule_bg_copy_tilemap_to_vram(2);
+    schedule_bg_copy_tilemap_to_vram(3);
+}
+
+void BuyMenuDrawMapGraphics(void)
+{
+    BuyMenuCollectEventObjectData();
+    BuyMenuDrawEventObjects();
+    BuyMenuDrawMapBg();
+}
+
+#ifdef NONMATCHING
+// functionally equivalent, but couldn't get the loop variables using the 
+// stack correctly. Might be related to the tileset metatiles type.
+void BuyMenuDrawMapBg(void)
+{
+    s16 i;
+    s16 j;
+    s16 x;
+    s16 y;
+    const struct MapLayout *mapLayout;
+    u16 metatile, metatileLayerType;
+
+    mapLayout = gMapHeader.mapLayout;
+    GetXYCoordsOneStepInFrontOfPlayer(&x, &y);
+    x -= 4;
+    y -= 4;
+
+    for (j = 0; j < 10; j++)
+    {
+        for (i = 0; i < 15; i++)
+        {
+            metatile = MapGridGetMetatileIdAt(x + i, y + j);
+            if (BuyMenuCheckForOverlapWithMenuBg(i, j) == TRUE)
+                metatileLayerType = MapGridGetMetatileLayerTypeAt(x + i, y + j);
+            else
+                metatileLayerType = 1;
+
+            if (metatile < 0x200)
+            {
+                BuyMenuDrawMapMetatile(i, j, (u16*)mapLayout->primaryTileset->metatiles + metatile * 8, metatileLayerType);
+            }
+            else
+            {
+                BuyMenuDrawMapMetatile(i, j, (u16*)mapLayout->secondaryTileset->metatiles + ((metatile - 0x200) * 8), metatileLayerType);
+            }
+        }
+    }
+}
+#else
+NAKED
+void BuyMenuDrawMapBg(void)
+{
+    asm_unified("\n\
+    push {r4-r7,lr}\n\
+    mov r7, r10\n\
+    mov r6, r9\n\
+    mov r5, r8\n\
+    push {r5-r7}\n\
+    sub sp, 0x4\n\
+    ldr r0, =gMapHeader\n\
+    ldr r0, [r0]\n\
+    mov r9, r0\n\
+    mov r4, sp\n\
+    adds r4, 0x2\n\
+    mov r0, sp\n\
+    adds r1, r4, 0\n\
+    bl GetXYCoordsOneStepInFrontOfPlayer\n\
+    mov r1, sp\n\
+    mov r0, sp\n\
+    ldrh r0, [r0]\n\
+    subs r0, 0x4\n\
+    strh r0, [r1]\n\
+    ldrh r0, [r4]\n\
+    subs r0, 0x4\n\
+    strh r0, [r4]\n\
+    movs r1, 0\n\
+    mov r10, r4\n\
+_080E05B6:\n\
+    movs r4, 0\n\
+    lsls r7, r1, 16\n\
+    asrs r0, r7, 16\n\
+    mov r8, r0\n\
+_080E05BE:\n\
+    mov r0, sp\n\
+    movs r1, 0\n\
+    ldrsh r0, [r0, r1]\n\
+    lsls r4, 16\n\
+    asrs r5, r4, 16\n\
+    adds r0, r5\n\
+    mov r2, r10\n\
+    movs r3, 0\n\
+    ldrsh r1, [r2, r3]\n\
+    add r1, r8\n\
+    bl MapGridGetMetatileIdAt\n\
+    lsls r0, 16\n\
+    lsrs r6, r0, 16\n\
+    adds r0, r5, 0\n\
+    mov r1, r8\n\
+    bl BuyMenuCheckForOverlapWithMenuBg\n\
+    lsls r0, 24\n\
+    lsrs r0, 24\n\
+    cmp r0, 0x1\n\
+    bne _080E0608\n\
+    mov r0, sp\n\
+    movs r1, 0\n\
+    ldrsh r0, [r0, r1]\n\
+    adds r0, r5\n\
+    mov r2, r10\n\
+    movs r3, 0\n\
+    ldrsh r1, [r2, r3]\n\
+    add r1, r8\n\
+    bl MapGridGetMetatileLayerTypeAt\n\
+    lsls r0, 24\n\
+    lsrs r5, r0, 24\n\
+    b _080E060A\n\
+    .pool\n\
+_080E0608:\n\
+    movs r5, 0x1\n\
+_080E060A:\n\
+    ldr r0, =0x000001ff\n\
+    cmp r6, r0\n\
+    bhi _080E062C\n\
+    asrs r0, r4, 16\n\
+    mov r2, r9\n\
+    ldr r1, [r2, 0x10]\n\
+    lsls r3, r6, 4\n\
+    ldr r2, [r1, 0xC]\n\
+    adds r2, r3\n\
+    asrs r1, r7, 16\n\
+    adds r3, r5, 0\n\
+    bl BuyMenuDrawMapMetatile\n\
+    b _080E0644\n\
+    .pool\n\
+_080E062C:\n\
+    asrs r0, r4, 16\n\
+    mov r3, r9\n\
+    ldr r2, [r3, 0x14]\n\
+    ldr r3, =0xfffffe00\n\
+    adds r1, r6, r3\n\
+    lsls r1, 4\n\
+    ldr r2, [r2, 0xC]\n\
+    adds r2, r1\n\
+    asrs r1, r7, 16\n\
+    adds r3, r5, 0\n\
+    bl BuyMenuDrawMapMetatile\n\
+_080E0644:\n\
+    movs r1, 0x80\n\
+    lsls r1, 9\n\
+    adds r0, r4, r1\n\
+    lsrs r4, r0, 16\n\
+    asrs r0, 16\n\
+    cmp r0, 0xE\n\
+    ble _080E05BE\n\
+    adds r0, r7, r1\n\
+    lsrs r1, r0, 16\n\
+    asrs r0, 16\n\
+    cmp r0, 0x9\n\
+    ble _080E05B6\n\
+    add sp, 0x4\n\
+    pop {r3-r5}\n\
+    mov r8, r3\n\
+    mov r9, r4\n\
+    mov r10, r5\n\
+    pop {r4-r7}\n\
+    pop {r0}\n\
+    bx r0\n\
+    .pool");
+}
+#endif // NONMATCHING

sym_ewram.txt

@@ -380,10 +380,10 @@ gUnknown_02039F5C: @ 2039F5C
 gUnknown_02039F5D: @ 2039F5D
 	.space 0x3
 
-gUnknown_02039F60: @ 2039F60
+gMartInfo: @ 2039F60
 	.space 0x10
 
-gUnknown_02039F70: @ 2039F70
+gShopDataPtr: @ 2039F70
 	.space 0x4
 
 gUnknown_02039F74: @ 2039F74