Merge pull request #412 from ProjectRevoTPP/shop

finish decompiling shop.c

2 files changed, 1072 insertions, 63 deletions

diff --git a/src/money.c b/src/money.c
index 5d9d0b689..67b7eb03f 100644
--- a/src/money.c
+++ b/src/money.c
@@ -148,7 +148,7 @@ void sub_80B7AEC(u32 arg0, u8 left, u8 top)
 }
 
 __attribute__((naked))
-void sub_80B7B34(void)
+void sub_80B7B34(u8 var1, u8 var2, int var3)
 {
     asm(".syntax unified\n\
     push {r4-r7,lr}\n\
diff --git a/src/shop.c b/src/shop.c
index d53646a88..6a88f1394 100644
--- a/src/shop.c
+++ b/src/shop.c
@@ -16,68 +16,106 @@
 #include "task.h"
 #include "tv.h"
 #include "unknown_task.h"
+#include "field_map_obj.h"
+#include "field_player_avatar.h"
+#include "fieldmap.h"
+#include "item.h"
+#include "decoration.h"
+#include "items.h"
+#include "songs.h"
+#include "rom4.h"
+#include "decoration_inventory.h"
+#include "field_camera.h"
 
-struct UnknownShopStruct
-{
-    /* 0x0 */ void (* callback) (void);
-    /* 0x4 */ u16 *itemList;
-    /* 0x8 */ u8 itemCount;
-    /* 0x9 */ u8 unk9;
-    /* 0xA */ u8 unkA;
-    /* 0xB */ u8 unkB;
-    /* 0xC */ bool8 unkC;
-    // unknown size
-};
+#define ewram18000 ((u16 *)(ewram + 0x18000))
+#define ewram18300 ((u16 *)(ewram + 0x18300))
 
-extern struct UnknownShopStruct gUnknown_03000708;
-extern struct MenuAction gUnknown_083CC6D0[];
+extern bool8 sub_80A52C4(u8, u8);
 
-extern u8 gUnknown_083CC6E8[];
-extern u8 gUnknown_083CC6EB[];
+extern u8 ewram[];
 extern u8 gBuyMenuFrame_Gfx[];
-
 extern u16 gBuyMenuFrame_Tilemap[];
 extern u16 gMenuMoneyPal[16];
-extern u16 gUnknown_083CC710[2];
 
-u8 CreateShopMenu(bool8 var)
+void sub_80B39D0(int var1, int var2, bool32 hasControlCode);
+void sub_80B3A70(void);
+void sub_80B4378(u8);
+void sub_80B43F0(u8);
+void Task_ExitBuyMenu(u8);
+void sub_80B4470(u8);
+void sub_80B2EFC(u8 taskId);
+void sub_80B2F30(u8 taskId);
+void HandleShopMenuQuit(u8 taskId);
+void sub_80B3BF4(u8 taskId);
+void sub_80B3D7C(u8 taskId);
+
+// iwram
+static struct MartInfo gMartInfo;
+
+// ewram
+EWRAM_DATA u32 gMartTotalCost = 0;
+EWRAM_DATA s16 gUnknown_020386A4[16][4] = {0}; // game freak barely uses 2d arrays wtf?
+EWRAM_DATA struct ItemSlot gUnknown_02038724[3] = {0}; // tv.c uses this, so it cant be static
+EWRAM_DATA u8 gUnknown_02038730 = 0;
+EWRAM_DATA u8 gUnknown_02038731 = 0;
+
+// rodata
+static const struct MenuAction2 gUnknown_083CC6D0[] =
+{
+    { MartText_Buy, sub_80B2EFC },
+    { MartText_Sell, sub_80B2F30 },
+    { MartText_Quit2, HandleShopMenuQuit },
+};
+
+static const u8 gUnknown_083CC6E8[] = {0, 1, 2}; // BUY SELL EXIT
+static const u8 gUnknown_083CC6EB[] = {0, 2}; // BUY EXIT
+
+static const u16 gUnusedMartArray[] = {0x2, 0x3, 0x4, 0xD, 0x121, 0xE, 0xE, 0xE, 0xE, 0xE, 0xE, 0x0, 0x0};
+
+static const struct YesNoFuncTable gUnknown_083CC708[] =
+{
+    sub_80B3BF4,
+    sub_80B3D7C
+};
+
+u8 CreateShopMenu(u8 martType)
 {
     ScriptContext2_Enable();
-    gUnknown_03000708.unkC = var;
-    gUnknown_03000708.unk9 = 0;
+    gMartInfo.martType = martType;
+    gMartInfo.cursor = 0;
 
-    if(var == FALSE)
+    if (martType == MART_TYPE_0)
     {
-        gUnknown_03000708.unkA = 2;
+        gMartInfo.numChoices = 2;
         MenuDrawTextWindow(0, 0, 10, 7);
-        PrintMenuItemsReordered(1, 1, 3, gUnknown_083CC6D0, (u8 *)gUnknown_083CC6E8);
+        PrintMenuItemsReordered(1, 1, 3, (struct MenuAction *)gUnknown_083CC6D0, (u8 *)gUnknown_083CC6E8);
     }
     else
     {
-        gUnknown_03000708.unkA = 1;
+        gMartInfo.numChoices = 1;
         MenuDrawTextWindow(0, 0, 10, 5);
-        PrintMenuItemsReordered(1, 1, 2, gUnknown_083CC6D0, (u8 *)gUnknown_083CC6EB);
+        PrintMenuItemsReordered(1, 1, 2, (struct MenuAction *)gUnknown_083CC6D0, (u8 *)gUnknown_083CC6EB);
     }
-    InitMenu(0, 1, 1, gUnknown_03000708.unkA + 1, 0, 9);
+    InitMenu(0, 1, 1, gMartInfo.numChoices + 1, 0, 9); // add 1 for cancel
 
     return CreateTask(sub_80B2E38, 8);
 }
 
 void SetShopMenuCallback(void *callbackPtr)
 {
-    gUnknown_03000708.callback = callbackPtr;
+    gMartInfo.callback = callbackPtr;
 }
 
 void SetShopItemsForSale(u16 *items)
 {
     u16 i = 0;
 
-    gUnknown_03000708.itemList = items;
-    gUnknown_03000708.itemCount = 0;
+    gMartInfo.itemList = items;
+    gMartInfo.itemCount = 0;
 
-    while (gUnknown_03000708.itemList[i])
+    while (gMartInfo.itemList[i])
     {
-        gUnknown_03000708.itemCount++;
+        gMartInfo.itemCount++;
         i++;
     }
 }
@@ -86,37 +124,37 @@ void sub_80B2E38(u8 var)
 {
     const u8 local = var;
 
-    if(gMain.newAndRepeatedKeys & 0x40)
+    if (gMain.newAndRepeatedKeys & DPAD_UP)
     {
-        if(gUnknown_03000708.unk9)
+        if (gMartInfo.cursor) // can move cursor up?
         {
-            PlaySE(0x5);
-            gUnknown_03000708.unk9 = MoveMenuCursor(-1);
+            PlaySE(SE_SELECT);
+            gMartInfo.cursor = MoveMenuCursor(-1);
         }
     }
-    else if(gMain.newAndRepeatedKeys & 0x80)
+    else if (gMain.newAndRepeatedKeys & DPAD_DOWN)
     {
-        if(gUnknown_03000708.unk9 != gUnknown_03000708.unkA)
+        if (gMartInfo.cursor != gMartInfo.numChoices) // can move cursor down?
         {
-            PlaySE(0x5);
-            gUnknown_03000708.unk9 = MoveMenuCursor(1);
+            PlaySE(SE_SELECT);
+            gMartInfo.cursor = MoveMenuCursor(1);
         }
     }
-    else if (gMain.newKeys & 1)
+    else if (gMain.newKeys & A_BUTTON)
     {
-        PlaySE(0x5);
-        if(!gUnknown_03000708.unkC)
+        PlaySE(SE_SELECT);
+        if (gMartInfo.martType == MART_TYPE_0)
         {
-            gUnknown_083CC6D0[gUnknown_083CC6E8[gUnknown_03000708.unk9]].func(local);
+            gUnknown_083CC6D0[gUnknown_083CC6E8[gMartInfo.cursor]].func(local);
         }
         else
         {
-            gUnknown_083CC6D0[gUnknown_083CC6EB[gUnknown_03000708.unk9]].func(local);
+            gUnknown_083CC6D0[gUnknown_083CC6EB[gMartInfo.cursor]].func(local);
         }
     }
-    else if(gMain.newKeys & 2)
+    else if (gMain.newKeys & B_BUTTON)
     {
-        PlaySE(0x5);
+        PlaySE(SE_SELECT);
         HandleShopMenuQuit(local);
     }
 }
@@ -141,17 +179,17 @@ void HandleShopMenuQuit(u8 taskId)
 {
     HandleDestroyMenuCursors();
     MenuZeroFillWindowRect(0, 0, 11, 8);
-    sub_80BE3BC(); // in tv.s?
+    sub_80BE3BC();
     ScriptContext2_Disable();
     DestroyTask(taskId);
 
-    if(gUnknown_03000708.callback)
-        gUnknown_03000708.callback(); // run the callback if it exists.
+    if (gMartInfo.callback)
+        gMartInfo.callback(); // run the callback if it exists.
 }
 
 void sub_80B2FA0(u8 taskId)
 {
-    if(!gPaletteFade.active)
+    if (!gPaletteFade.active)
     {
         SetMainCallback2((void *)((u16)gTasks[taskId].data[8] << 16 | (u16)gTasks[taskId].data[9]));
         DestroyTask(taskId);
@@ -160,15 +198,15 @@ void sub_80B2FA0(u8 taskId)
 
 void ReturnToShopMenuAfterExitingSellMenu(u8 taskId)
 {
-    CreateShopMenu(gUnknown_03000708.unkC);
+    CreateShopMenu(gMartInfo.martType);
     DestroyTask(taskId);
 }
 
 void Task_ExitSellMenu(u8 taskId)
 {
-    if(sub_807D770() == 1)
+    if (sub_807D770() == 1)
     {
-        if(gUnknown_03000708.unkC == 2)
+        if (gMartInfo.martType == MART_TYPE_2)
             DisplayItemMessageOnField(taskId, gOtherText_CanIHelpYou, ReturnToShopMenuAfterExitingSellMenu, 0);
         else
             DisplayItemMessageOnField(taskId, gOtherText_AnythingElse, ReturnToShopMenuAfterExitingSellMenu, 0);
@@ -253,8 +291,8 @@ void BuyMenuDrawGraphics(void)
     SetUpWindowConfig(&gWindowConfig_81E6DFC);
     InitMenuWindow(&gWindowConfig_81E6DFC);
     BuyMenuDrawMapGraphics();
-    gUnknown_03000708.unk9 = zero;
-    gUnknown_03000708.unkB = zero2;
+    gMartInfo.cursor = zero;
+    gMartInfo.choicesAbove = zero2;
     MenuZeroFillWindowRect(0, 0, 0x20, 0x20);
     sub_80B7C14(gSaveBlock1.money, 0, 0);
     sub_80B3764(0, 7);
@@ -272,9 +310,8 @@ void BuyMenuDrawGraphics(void)
 
 void sub_80B3240(void)
 {
-    u16 tempArr[2];
+    u16 tempArr[2] = {0x41EE, 0x7FFF};
 
-    memcpy(tempArr, gUnknown_083CC710, sizeof(tempArr));
     LoadPalette(&tempArr[1], 0xD1, 2);
     LoadPalette(&tempArr[0], 0xD8, 2);
 }
@@ -283,7 +320,7 @@ void sub_80B3270(void)
 {
     sub_80F944C();
 
-    if(gUnknown_03000708.itemCount > 7)
+    if (gMartInfo.itemCount > 7)
     {
         CreateVerticalScrollIndicators(0, 172, 12);
         CreateVerticalScrollIndicators(1, 172, 148);
@@ -293,12 +330,12 @@ void sub_80B3270(void)
 
 void sub_80B32A4(void)
 {
-    if(gUnknown_03000708.unkB == 0)
+    if (gMartInfo.choicesAbove == 0)
         sub_80F979C(0, 1);
     else
         sub_80F979C(0, 0);
 
-    if(gUnknown_03000708.unkB + 7 >= gUnknown_03000708.itemCount)
+    if (gMartInfo.choicesAbove + 7 >= gMartInfo.itemCount)
         sub_80F979C(1, 1);
     else
         sub_80F979C(1, 0);
@@ -318,13 +355,13 @@ void BuyMenuDrawMapMetatileLayer(u16 *array, s16 offset1, s16 offset2, u16 *arra
     array[offset1 + offset2 + 33] = array2[3];
 }
 
-void BuyMenuDrawMapMetatile(int var1, int var2, u16 *var3, s8 var4)
+void BuyMenuDrawMapMetatile(int var1, int var2, u16 *var3, s32 var4)
 {
     u8 tempVar4 = var4;
     s16 offset1 = var1 * 2;
     s16 offset2 = (var2 * 0x40) + 0x40;
 
-    switch(tempVar4)
+    switch (tempVar4)
     {
     case 0: // _080B335C
         BuyMenuDrawMapMetatileLayer(gBGTilemapBuffers[2], offset1, offset2, var3);
@@ -340,3 +377,975 @@ void BuyMenuDrawMapMetatile(int var1, int var2, u16 *var3, s8 var4)
         break;
     }
 }
+
+void sub_80B33D0(s16 var1, int var2, u16 *var3)
+{
+    s16 offset1 = var1 * 2;
+    s16 offset2 = (var2 * 0x40) + 0x40;
+
+    BuyMenuDrawMapMetatileLayer(gBGTilemapBuffers[3], offset1, offset2, var3);
+    BuyMenuDrawMapMetatileLayer(gBGTilemapBuffers[2], offset1, offset2, var3 + 4);
+}
+
+void sub_80B3420(void)
+{
+    s16 facingX;
+    s16 facingY;
+    s16 x;
+    s16 y;
+
+    GetXYCoordsOneStepInFrontOfPlayer(&facingX, &facingY);
+    facingX -= 3;
+    facingY -= 3;
+
+    for (y = 0; y < 6; y++)
+    {
+        for (x = 0; x < 7; x++)
+        {
+            u16 metatileId = MapGridGetMetatileIdAt(facingX + x, facingY + y);
+
+            if (y != 5 && x != 6)
+            {
+                s32 r3 = MapGridGetMetatileLayerTypeAt(facingX + x, facingY + y);
+
+                if (metatileId < 512)
+                    BuyMenuDrawMapMetatile(x, y, (u16 *)gMapHeader.mapData->primaryTileset->metatiles + metatileId * 8, r3);
+                else
+                    BuyMenuDrawMapMetatile(x, y, (u16 *)gMapHeader.mapData->secondaryTileset->metatiles + (metatileId - 512) * 8, r3);
+            }
+            else
+            {
+                if (metatileId < 512)
+                    sub_80B33D0(x, y, (u16 *)gMapHeader.mapData->primaryTileset->metatiles + metatileId * 8);
+                else
+                    sub_80B33D0(x, y, (u16 *)gMapHeader.mapData->secondaryTileset->metatiles + (metatileId - 512) * 8);
+            }
+
+            if (y == 0 && x != 0 && x != 6)
+                sub_80B32EC(gBGTilemapBuffers[1], x * 2, 64);
+        }
+    }
+}
+
+void BuyMenuDrawMapGraphics(void)
+{
+    sub_80F9020();
+    sub_80B356C();
+    sub_80B368C();
+    sub_80B3420();
+}
+
+void sub_80B356C(void)
+{
+    s16 facingX;
+    s16 facingY;
+    u8 playerHeight;
+    u8 y;
+    u8 x;
+    u8 r8 = 0;
+
+    GetXYCoordsOneStepInFrontOfPlayer(&facingX, &facingY);
+    playerHeight = PlayerGetZCoord();
+    for (y = 0; y < 16; y++)
+        gUnknown_020386A4[y][MAP_OBJ_ID] = 16;
+    for (y = 0; y < 5; y++)
+    {
+        for (x = 0; x < 7; x++)
+        {
+            u8 mapObjId = GetFieldObjectIdByXYZ(facingX - 3 + x, facingY - 2 + y, playerHeight);
+
+            if (mapObjId != 16)
+            {
+                gUnknown_020386A4[r8][MAP_OBJ_ID] = mapObjId;
+                gUnknown_020386A4[r8][X_COORD] = x;
+                gUnknown_020386A4[r8][Y_COORD] = y;
+                if (gMapObjects[mapObjId].mapobj_unk_18 == 1)
+                    gUnknown_020386A4[r8][ANIM_NUM] = 0;
+                if (gMapObjects[mapObjId].mapobj_unk_18 == 2)
+                    gUnknown_020386A4[r8][ANIM_NUM] = 1;
+                if (gMapObjects[mapObjId].mapobj_unk_18 == 3)
+                    gUnknown_020386A4[r8][ANIM_NUM] = 2;
+                if (gMapObjects[mapObjId].mapobj_unk_18 == 4)
+                    gUnknown_020386A4[r8][ANIM_NUM] = 3;
+                r8++;
+            }
+        }
+    }
+}
+
+void sub_80B368C(void)
+{
+    u8 i;
+
+    for (i = 0; i < 16; i++) // max objects?
+    {
+        if (gUnknown_020386A4[i][MAP_OBJ_ID] == 16)
+            continue;
+
+        StartSpriteAnim(&gSprites[AddPseudoFieldObject(
+            gMapObjects[gUnknown_020386A4[i][MAP_OBJ_ID]].graphicsId,
+            SpriteCallbackDummy,
+            (u16)gUnknown_020386A4[i][X_COORD] * 16 + 8,
+            (u16)gUnknown_020386A4[i][Y_COORD] * 16 + 32,
+            2)],
+            gUnknown_020386A4[i][ANIM_NUM]);
+    }
+}
+
+void sub_80B3720(void)
+{
+    s16 i;
+    
+    for (i = 0; i < 0x400; i++)
+    {
+        if (ewram18000[i] != 0)
+            gBGTilemapBuffers[1][i] = ewram18000[i] + 0xC3E0;
+    }
+}
+
+void sub_80B3764(int var1, int var2)
+{
+    sub_80B3720();
+    sub_80B39D0(var1, var2, 0);
+    InitMenu(0, 0xE, 0x2, 0x8, gMartInfo.cursor, 0xF);
+}
+
+void sub_80B379C(void)
+{
+    u16 i, j;
+
+    for (i = 0; i < 8; i++)
+        for (j = 0; j < 14; j++)
+            gBGTilemapBuffers[1][32 * (i + 12) + j] = ewram18300[32 * i + j] + 0xC3E0;
+}
+
+void sub_80B37EC(void)
+{
+    sub_80B3A70();
+}
+
+void sub_80B37F8(u8 taskId)
+{
+    u16 itemListIndex = gMartInfo.choicesAbove + gMartInfo.cursor;
+    u16 itemId = gMartInfo.itemList[itemListIndex];
+    u32 price = (ItemId_GetPrice(itemId) >> GetPriceReduction(1));
+
+    sub_80B7A94(gTasks[taskId].data[1] * price, 6, 6, 11);
+    gStringVar1[0] = EXT_CTRL_CODE_BEGIN;
+    gStringVar1[1] = 0x14;
+    gStringVar1[2] = 0x6;
+    ConvertIntToDecimalStringN(&gStringVar1[3], gTasks[taskId].data[1], 1, 2);
+    MenuPrint(gOtherText_xString1, 1, 11);
+    sub_80A3FA0(gBGTilemapBuffers[1], 1, 11, 12, 2, 0xC3E1);
+}
+
+void sub_80B389C(u16 itemId, u8 var2, bool32 hasControlCode)
+{
+    u8 *stringPtr = gStringVar1;
+
+    if (hasControlCode != FALSE)
+    {
+        stringPtr[0] = EXT_CTRL_CODE_BEGIN;
+        stringPtr[1] = 0x1;
+        stringPtr[2] = 0x2;
+        stringPtr += 3;
+    }
+
+    CopyItemName(itemId, stringPtr);
+
+    sub_8072A18(&gStringVar1[0], 0x70, var2 << 3, 0x58, 0x1);
+    stringPtr = gStringVar1;
+
+    if (hasControlCode != FALSE)
+        stringPtr = &gStringVar1[3];
+
+    sub_80B79F8(stringPtr, (ItemId_GetPrice(itemId) >> GetPriceReduction(1)), 0x4);
+    MenuPrint_PixelCoords(&gStringVar1[0], 0xCA, var2 << 3, 1);
+}
+
+void sub_80B3930(u16 itemId, u8 var2, bool32 hasControlCode)
+{
+    u8 *stringPtr = gStringVar1;
+
+    if (hasControlCode != FALSE)
+    {
+        stringPtr[0] = EXT_CTRL_CODE_BEGIN;
+        stringPtr[1] = 0x1;
+        stringPtr[2] = 0x2;
+        stringPtr += 3;
+    }
+
+    StringCopy(stringPtr, gDecorations[itemId].name);
+    sub_8072A18(&gStringVar1[0], 0x70, var2 << 3, 0x58, 0x1);
+    stringPtr = gStringVar1;
+
+    if (hasControlCode != FALSE)
+        stringPtr = &gStringVar1[3];
+
+    if (gDecorations[itemId].price == 10000)
+    {
+        sub_80B7B34(0x19, var2, hasControlCode); // huh???
+    }
+    else
+    {
+        sub_80B79F8(stringPtr, gDecorations[itemId].price, 0x4);
+        MenuPrint_PixelCoords(&gStringVar1[0], 0xCA, var2 << 3, 0x1);
+    }
+}
+
+void sub_80B39D0(int var1, int var2, bool32 hasControlCode)
+{
+    u8 i;
+
+    for (i = var1; i <= var2 && gMartInfo.choicesAbove + i < gMartInfo.itemCount; i++)
+    {
+        if (gMartInfo.martType == MART_TYPE_0)
+            sub_80B389C(gMartInfo.itemList[gMartInfo.choicesAbove + i], (i << 1) + 2, hasControlCode);
+        else
+            sub_80B3930(gMartInfo.itemList[gMartInfo.choicesAbove + i], (i << 1) + 2, hasControlCode);
+    }
+
+    if (i != 8 && gMartInfo.choicesAbove + i == gMartInfo.itemCount)
+    {
+        MenuFillWindowRectWithBlankTile(0xE, (i << 1) + 2, 0x1C, (i << 1) + 3);
+        MenuPrint(gOtherText_CancelNoTerminator, 0xE, (i << 1) + 2);
+    }
+}
+
+void sub_80B3A70(void)
+{
+    if (gMartInfo.choicesAbove + gMartInfo.cursor != gMartInfo.itemCount)
+    {
+        if (gMartInfo.martType == MART_TYPE_0)
+        {
+            sub_8072AB0(ItemId_GetDescription(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]),
+                0x4, 0x68, 0x68, 0x30, 0);
+        }
+        else
+            sub_8072AB0(gDecorations[gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]].description,
+                0x4, 0x68, 0x68, 0x30, 0);
+    }
+    else
+    {
+        sub_8072AB0(gOtherText_QuitShopping, 0x4, 0x68, 0x68, 0x30, 0);
+    }
+}
+
+void sub_80B3AEC(u8 taskId)
+{
+    if (gMain.newKeys & A_BUTTON || gMain.newKeys & B_BUTTON)
+    {
+        sub_80B39D0(gMartInfo.cursor, gMartInfo.cursor, 0); // huh???
+        PlaySE(SE_SELECT);
+
+        if (gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor] == ITEM_POKE_BALL && gTasks[taskId].data[1] >= 10 && AddBagItem(ITEM_PREMIER_BALL, 1) == TRUE)
+            DisplayItemMessageOnField(taskId, gOtherText_FreePremierBall, sub_80B4378, 0xC3E1);
+        else
+            sub_80B4378(taskId);
+    }
+}
+
+void sub_80B3B80(u8 taskId)
+{
+    IncrementGameStat(0x26);
+    sub_80B79E0(&gSaveBlock1.money, gMartTotalCost);
+    PlaySE(SE_REGI);
+    sub_80B7BEC(gSaveBlock1.money, 0, 0);
+    gTasks[taskId].func = sub_80B3AEC;
+}
+
+void sub_80B3BD0(u8 taskId)
+{
+    sub_80B39D0(gMartInfo.cursor, gMartInfo.cursor, 0); // same thing as above?
+    sub_80B4378(taskId);
+}
+
+void sub_80B3BF4(u8 taskId)
+{
+    MenuZeroFillWindowRect(0x7, 0x8, 0xD, 0xD);
+    sub_80A3FA0(gBGTilemapBuffers[1], 8, 9, 4, 4, 0);
+    sub_80B379C();
+    sub_80B3420();
+
+    if (IsEnoughMoney(gSaveBlock1.money, gMartTotalCost))
+    {
+        if (gMartInfo.martType == MART_TYPE_0)
+        {
+            if (AddBagItem(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor], gTasks[taskId].data[1]))
+            {
+                DisplayItemMessageOnField(taskId, gOtherText_HereYouGo, sub_80B3B80, 0xC3E1);
+                sub_80B4470(taskId);
+            }
+            else
+                DisplayItemMessageOnField(taskId, gOtherText_NoRoomFor, sub_80B3BD0, 0xC3E1);
+        }
+        else // a normal mart is only type 0, so types 1 and 2 are decoration marts.
+        {
+            if (IsThereStorageSpaceForDecoration(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]))
+            {
+                if (gMartInfo.martType == MART_TYPE_1)
+                    DisplayItemMessageOnField(taskId, gOtherText_HereYouGo2, sub_80B3B80, 0xC3E1);
+                else
+                    DisplayItemMessageOnField(taskId, gOtherText_HereYouGo3, sub_80B3B80, 0xC3E1);
+            }
+            else
+            {
+                StringExpandPlaceholders(gStringVar4, gOtherText_SpaceForIsFull);
+                DisplayItemMessageOnField(taskId, gStringVar4, sub_80B3BD0, 0xC3E1);
+            }
+        }
+    }
+    else
+        DisplayItemMessageOnField(taskId, gOtherText_NotEnoughMoney, sub_80B3BD0, 0xC3E1);
+}
+
+void sub_80B3D38(u8 taskId)
+{
+    DisplayYesNoMenu(7, 8, 1);
+    sub_80A3FA0(gBGTilemapBuffers[1], 8, 9, 4, 4, 0xC3E1);
+    DoYesNoFuncWithChoice(taskId, gUnknown_083CC708);
+}
+
+void sub_80B3D7C(u8 taskId)
+{
+    sub_80B39D0(gMartInfo.cursor, gMartInfo.cursor, 0);
+    MenuZeroFillWindowRect(0x7, 0x8, 0xD, 0xD);
+    sub_80A3FA0(gBGTilemapBuffers[1], 0x8, 0x9, 0x4, 0x4, 0);
+    sub_80B4378(taskId);
+}
+
+void sub_80B3DC8(u8 taskId)
+{
+    if (sub_80A52C4(taskId, gMartInfo.curItemCount) == TRUE)
+        sub_80B37F8(taskId);
+
+    if (gMain.newKeys & A_BUTTON)
+    {
+        gMartTotalCost = (ItemId_GetPrice(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]) >> GetPriceReduction(1)) * gTasks[taskId].data[1]; // set total cost of your purchase.
+        MenuZeroFillWindowRect(0, 0xA, 0xD, 0xD);
+        sub_80A3FA0(gBGTilemapBuffers[1], 0x1, 0xB, 0xC, 0x2, 0);
+        sub_80B379C();
+        sub_80B3420();
+        CopyItemName(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor], gStringVar1);
+        ConvertIntToDecimalStringN(gStringVar2, gTasks[taskId].data[1], 0, 0x2);
+        ConvertIntToDecimalStringN(gStringVar3, gMartTotalCost, 0, 0x8);
+        StringExpandPlaceholders(gStringVar4, gOtherText_ThatWillBe);
+        DisplayItemMessageOnField(taskId, gStringVar4, sub_80B3D38, 0xC3E1);
+    }
+    else if (gMain.newKeys & B_BUTTON)
+    {
+        sub_80B39D0(gMartInfo.cursor, gMartInfo.cursor, 0);
+        sub_80B4378(taskId);
+    }
+}
+
+void sub_80B3EFC(u8 taskId)
+{
+    u16 var;
+
+    gTasks[taskId].data[1] = 1;
+    MenuDrawTextWindow(0, 0xA, 0xD, 0xD);
+    sub_80B37F8(taskId);
+
+    var = gSaveBlock1.money / (ItemId_GetPrice(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]) >> GetPriceReduction(1));
+    if (var > 99)
+        gMartInfo.curItemCount = 99;
+    else
+        gMartInfo.curItemCount = var;
+
+    gTasks[taskId].func = sub_80B3DC8;
+}
+
+#ifdef NONMATCHING
+void sub_80B3F88(void)
+{
+    u16 *r1;
+    u16 *r2;
+    register u8 *r10 asm("r10");
+    s32 i;
+    s32 j;
+    struct Window *r8 = &gMenuWindow;
+    
+    r1 = r8->tilemap;
+    r1 += 0x1EF;
+    r2 = r1;
+    r2 += 64;
+    r10 = r8->tileData;
+    
+    for (i = 0; i < 14; i++)
+    {
+        for (j = 0; j < 15; j++)
+        {
+            if ((r1[j] & 0x3FF) <= r8->tileDataStartOffset + 1)
+                r2[j] = r8->tileDataStartOffset + 1;
+            else
+                r2[j] = r1[j] + 0x3C;
+        }
+        
+        r1 -= 32;
+        r2 -= 32;
+    }
+    
+    {
+        u8 *r1 = r10 + 0x3A20;
+        u8 *r2 = r1 + 0x780;
+        for (i = 0; i < 14; i++)
+        {
+            DmaCopy16(3, r1, r2, 0x1E0);
+            r2 -= 0x3C0;
+            r1 -= 0x3C0;
+        }
+    }
+}
+#else
+__attribute__((naked))
+void sub_80B3F88(void)
+{
+    asm(".syntax 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, _080B4020 @ =gMenuWindow\n\
+    mov r8, r0\n\
+    ldr r1, [r0, 0x28]\n\
+    ldr r3, _080B4024 @ =0x000003de\n\
+    adds r1, r3\n\
+    adds r2, r1, 0\n\
+    adds r2, 0x80\n\
+    ldr r7, [r0, 0x24]\n\
+    mov r10, r7\n\
+    ldr r0, _080B4028 @ =0x000003ff\n\
+    mov r9, r0\n\
+    movs r6, 0xD\n\
+_080B3FAC:\n\
+    adds r3, r2, 0\n\
+    subs r3, 0x40\n\
+    str r3, [sp]\n\
+    movs r7, 0x40\n\
+    negs r7, r7\n\
+    adds r7, r1\n\
+    mov r12, r7\n\
+    adds r3, r2, 0\n\
+    adds r4, r1, 0\n\
+    movs r5, 0xE\n\
+_080B3FC0:\n\
+    ldrh r2, [r4]\n\
+    mov r1, r9\n\
+    ands r1, r2\n\
+    mov r7, r8\n\
+    ldrh r0, [r7, 0x1A]\n\
+    adds r0, 0x1\n\
+    cmp r1, r0\n\
+    ble _080B3FD4\n\
+    adds r0, r2, 0\n\
+    adds r0, 0x3C\n\
+_080B3FD4:\n\
+    strh r0, [r3]\n\
+    adds r3, 0x2\n\
+    adds r4, 0x2\n\
+    subs r5, 0x1\n\
+    cmp r5, 0\n\
+    bge _080B3FC0\n\
+    ldr r2, [sp]\n\
+    mov r1, r12\n\
+    subs r6, 0x1\n\
+    cmp r6, 0\n\
+    bge _080B3FAC\n\
+    ldr r1, _080B402C @ =0x00003a20\n\
+    add r1, r10\n\
+    movs r0, 0xF0\n\
+    lsls r0, 3\n\
+    adds r2, r1, r0\n\
+    ldr r3, _080B4030 @ =0x040000d4\n\
+    ldr r5, _080B4034 @ =0x800000f0\n\
+    ldr r4, _080B4038 @ =0xfffffc40\n\
+    movs r6, 0xD\n\
+_080B3FFC:\n\
+    str r1, [r3]\n\
+    str r2, [r3, 0x4]\n\
+    str r5, [r3, 0x8]\n\
+    ldr r0, [r3, 0x8]\n\
+    adds r2, r4\n\
+    adds r1, r4\n\
+    subs r6, 0x1\n\
+    cmp r6, 0\n\
+    bge _080B3FFC\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\
+    .align 2, 0\n\
+_080B4020: .4byte gMenuWindow\n\
+_080B4024: .4byte 0x000003de\n\
+_080B4028: .4byte 0x000003ff\n\
+_080B402C: .4byte 0x00003a20\n\
+_080B4030: .4byte 0x040000d4\n\
+_080B4034: .4byte 0x800000f0\n\
+_080B4038: .4byte 0xfffffc40\n\
+    .syntax divided");
+}
+#endif
+
+#ifdef NONMATCHING
+void sub_80B403C(void)
+{
+    u16 *r1;
+    u16 *r2;
+    u8 *r10;
+    s32 i;
+    s32 j;
+    struct Window *r8 = &gMenuWindow;
+    
+    r1 = r8->tilemap;
+    r1 += 0x4F;
+    r2 = r1;
+    r2 += 64;
+    r10 = r8->tileData;
+    
+    for (i = 0; i < 14; i++)
+    {
+        for (j = 0; j < 15; j++)
+        {
+            if ((r1[j] & 0x3FF) <= r8->tileDataStartOffset + 1)
+                r2[j] = r8->tileDataStartOffset + 1;
+            else
+                r2[j] = r1[j] + 0x3C;
+        }
+        
+        r1 += 32;
+        r2 += 32;
+    }
+
+    {
+        register u8 *r1 asm("r1") = r10 + 0x960;
+        register u8 *r2 asm("r2") = r1;
+       
+        r1 += 0x780;
+        for (i = 0; i < 14; i++)
+        {
+            DmaCopy16(3, r1, r2, 0x1E0);
+            r1 += 0x3C0;
+            r2 += 0x3C0;
+        }
+    }
+}
+#else
+__attribute__((naked))
+void sub_80B403C(void)
+{
+    asm(".syntax 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, _080B40D8 @ =gMenuWindow\n\
+    mov r8, r0\n\
+    ldr r2, [r0, 0x28]\n\
+    adds r1, r2, 0\n\
+    adds r1, 0x9E\n\
+    adds r2, r1, 0\n\
+    adds r1, 0x80\n\
+    ldr r3, [r0, 0x24]\n\
+    mov r10, r3\n\
+    ldr r7, _080B40DC @ =0x000003ff\n\
+    mov r9, r7\n\
+    movs r6, 0xD\n\
+_080B4060:\n\
+    adds r0, r2, 0\n\
+    adds r0, 0x40\n\
+    str r0, [sp]\n\
+    movs r3, 0x40\n\
+    adds r3, r1\n\
+    mov r12, r3\n\
+    adds r3, r2, 0\n\
+    adds r4, r1, 0\n\
+    movs r5, 0xE\n\
+_080B4072:\n\
+    ldrh r2, [r4]\n\
+    mov r1, r9\n\
+    ands r1, r2\n\
+    mov r7, r8\n\
+    ldrh r0, [r7, 0x1A]\n\
+    adds r0, 0x1\n\
+    cmp r1, r0\n\
+    ble _080B4086\n\
+    adds r0, r2, 0\n\
+    subs r0, 0x3C\n\
+_080B4086:\n\
+    strh r0, [r3]\n\
+    adds r3, 0x2\n\
+    adds r4, 0x2\n\
+    subs r5, 0x1\n\
+    cmp r5, 0\n\
+    bge _080B4072\n\
+    ldr r2, [sp]\n\
+    mov r1, r12\n\
+    subs r6, 0x1\n\
+    cmp r6, 0\n\
+    bge _080B4060\n\
+    movs r1, 0x96\n\
+    lsls r1, 4\n\
+    add r1, r10\n\
+    adds r2, r1, 0\n\
+    movs r0, 0xF0\n\
+    lsls r0, 3\n\
+    adds r1, r0\n\
+    ldr r3, _080B40E0 @ =0x040000d4\n\
+    ldr r5, _080B40E4 @ =0x800000f0\n\
+    movs r4, 0xF0\n\
+    lsls r4, 2\n\
+    movs r6, 0xD\n\
+_080B40B4:\n\
+    str r1, [r3]\n\
+    str r2, [r3, 0x4]\n\
+    str r5, [r3, 0x8]\n\
+    ldr r0, [r3, 0x8]\n\
+    adds r2, r4\n\
+    adds r1, r4\n\
+    subs r6, 0x1\n\
+    cmp r6, 0\n\
+    bge _080B40B4\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\
+    .align 2, 0\n\
+_080B40D8: .4byte gMenuWindow\n\
+_080B40DC: .4byte 0x000003ff\n\
+_080B40E0: .4byte 0x040000d4\n\
+_080B40E4: .4byte 0x800000f0\n\
+    .syntax divided");
+}
+#endif
+
+void sub_80B40E8(u8 taskId) // Mart_DoCursorAction
+{
+    if (!gPaletteFade.active)
+    {
+        if ((gMain.newAndRepeatedKeys & DPAD_ANY) == DPAD_UP) // only up can be pressed
+        {
+            if (gMartInfo.cursor == 0)
+            {
+                if (gMartInfo.choicesAbove == 0) // if there are no choices above, dont bother
+                    return;
+
+                PlaySE(SE_SELECT);
+                gMartInfo.choicesAbove--; // since cursor is at the top and there are choices above the top, scroll the menu up by updating choicesAbove.
+                sub_80B3F88();
+                sub_80B39D0(0, 0, 0);
+                sub_80B3A70();
+                sub_80B32A4();
+            }
+            else // if the cursor is not 0, choicesAbove cannot be updated yet since the cursor is at the top of the menu, so update cursor.
+            {
+                PlaySE(SE_SELECT);
+                gMartInfo.cursor = MoveMenuCursor(-1); // move cursor up
+                sub_80B3A70();
+            }
+        }
+        else if ((gMain.newAndRepeatedKeys & DPAD_ANY) == DPAD_DOWN) // only down can be pressed
+        {
+            if (gMartInfo.cursor == 7) // are you at the bottom of the menu?
+            {
+                if (gMartInfo.choicesAbove + gMartInfo.cursor == gMartInfo.itemCount) // are you at cancel?
+                    return;
+
+                PlaySE(SE_SELECT);
+                gMartInfo.choicesAbove++;
+                sub_80B403C();
+                sub_80B39D0(7, 7, 0);
+                sub_80B3A70();
+                sub_80B32A4();
+            }
+            else if (gMartInfo.cursor != gMartInfo.itemCount)
+            {
+                PlaySE(SE_SELECT);
+                gMartInfo.cursor = MoveMenuCursor(1);
+                sub_80B3A70();
+            }
+        }
+        else if (gMain.newKeys & A_BUTTON)
+        {
+            PlaySE(SE_SELECT);
+
+            if (gMartInfo.choicesAbove + gMartInfo.cursor != gMartInfo.itemCount) // did you not hit CANCEL?
+            {
+                PauseVerticalScrollIndicator(0);
+                PauseVerticalScrollIndicator(1);
+                sub_80F979C(1, 1);
+                sub_80B39D0(gMartInfo.cursor, gMartInfo.cursor, 1);
+                HandleDestroyMenuCursors();
+                MenuZeroFillWindowRect(0, 0xC, 0xD, 0x13);
+
+                if (gMartInfo.martType == MART_TYPE_0)
+                {
+                    gMartTotalCost = (ItemId_GetPrice(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]) >> GetPriceReduction(1)); // set 1x price
+                    if (!IsEnoughMoney(gSaveBlock1.money, gMartTotalCost))
+                    {
+                        DisplayItemMessageOnField(taskId, gOtherText_NotEnoughMoney, sub_80B3BD0, 0xC3E1); // tail merge
+                    }
+                    else // _080B42BA
+                    {
+                        CopyItemName(gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor], gStringVar1);
+                        StringExpandPlaceholders(gStringVar4, gOtherText_HowManyYouWant);
+                        DisplayItemMessageOnField(taskId, gStringVar4, sub_80B3EFC, 0xC3E1);                    
+                    }
+                }
+                else // _080B428C
+                {
+                    gMartTotalCost = gDecorations[gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]].price;
+
+                    if (!IsEnoughMoney(gSaveBlock1.money, gMartTotalCost))
+                    {
+                        DisplayItemMessageOnField(taskId, gOtherText_NotEnoughMoney, sub_80B3BD0, 0xC3E1); // tail merge
+                    }
+                    else
+                    {    
+                        StringCopy(gStringVar1, gDecorations[gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]].name);
+                        ConvertIntToDecimalStringN(gStringVar2, gMartTotalCost, 0, 0x8);
+
+                        if (gMartInfo.martType == MART_TYPE_1)
+                        {
+                            StringExpandPlaceholders(gStringVar4, gOtherText_ThatWillBe2);
+                        }
+                        else
+                        {
+                            StringExpandPlaceholders(gStringVar4, gOtherText_ThatWillBe3);
+                        }
+                        DisplayItemMessageOnField(taskId, gStringVar4, sub_80B3D38, 0xC3E1);
+                    }
+                }
+            }
+            else
+                sub_80B43F0(taskId);
+        }
+        else if (gMain.newKeys & B_BUTTON) // go back to buy/sell/exit menu
+        {
+            PlaySE(SE_SELECT);
+            sub_80B43F0(taskId);
+        }
+    }
+}
+
+void sub_80B4378(u8 taskId)
+{
+    MenuZeroFillWindowRect(0, 0xE, 0x1D, 0x13);
+    MenuZeroFillWindowRect(0, 0xA, 0xD, 0xD);
+    sub_80A3FA0(gBGTilemapBuffers[1], 0x1, 0xB, 0xC, 0x2, 0);
+    sub_80B3420();
+    sub_80B3764(6, 7);
+    sub_80B37EC();
+    StartVerticalScrollIndicators(0);
+    StartVerticalScrollIndicators(1);
+    sub_80B32A4();
+    gTasks[taskId].func = sub_80B40E8;
+}
+
+void sub_80B43F0(u8 taskId)
+{
+    gFieldCallback = sub_80B3050;
+    BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+    gTasks[taskId].func = Task_ExitBuyMenu;
+}
+
+void Task_ExitBuyMenu(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        RemoveMoneyLabelObject(0, 0);
+        BuyMenuFreeMemory();
+        SetMainCallback2(c2_exit_to_overworld_2_switch);
+        DestroyTask(taskId);
+    }
+}
+
+void sub_80B4470(u8 taskId)
+{
+    u16 i;
+
+    for (i = 0; i < 3; i++)
+    {
+        if (gUnknown_02038724[i].itemId == gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor]
+         && gUnknown_02038724[i].quantity != 0)
+        {
+            if (gUnknown_02038724[i].quantity + gTasks[taskId].data[1] > 255)
+                gUnknown_02038724[i].quantity = 255;
+            else
+                gUnknown_02038724[i].quantity += gTasks[taskId].data[1];
+            return;
+        }
+    }
+
+    if (gUnknown_02038730 < 3)
+    {
+        gUnknown_02038724[gUnknown_02038730].itemId = gMartInfo.itemList[gMartInfo.choicesAbove + gMartInfo.cursor];
+        gUnknown_02038724[gUnknown_02038730].quantity = gTasks[taskId].data[1];
+        gUnknown_02038730++;
+    }
+}
+
+void ClearItemPurchases(void)
+{
+    gUnknown_02038730 = 0;
+    ClearItemSlots(gUnknown_02038724, 3);
+}
+
+void CreatePokemartMenu(u16 *itemList)
+{
+    CreateShopMenu(MART_TYPE_0);
+    SetShopItemsForSale(itemList);
+    ClearItemPurchases();
+    SetShopMenuCallback(EnableBothScriptContexts);
+}
+
+void CreateDecorationShop1Menu(u16 *itemList)
+{
+    CreateShopMenu(MART_TYPE_1);
+    SetShopItemsForSale(itemList);
+    SetShopMenuCallback(EnableBothScriptContexts);
+}
+
+void CreateDecorationShop2Menu(u16 *itemList)
+{
+    CreateShopMenu(MART_TYPE_2);
+    SetShopItemsForSale(itemList);
+    SetShopMenuCallback(EnableBothScriptContexts);
+}
+
+void sub_80B45B4(u8 taskId, const s16 *list, u16 c)
+{
+    s16 r5 = gTasks[taskId].data[4] - 1;
+    s16 r3 = gTasks[taskId].data[5] - 1;
+    s16 r4 = gTasks[taskId].data[1];
+    s16 y;
+    s16 x;
+    
+    if (gTasks[taskId].data[2] == 0)
+    {
+        for (y = 0; y < 3; y++)
+        {
+            for (x = 0; x < 3; x++)
+            {
+                s16 metatileId = MapGridGetMetatileIdAt(r5 + x, r3 + y);
+                
+                if (list[r4] == metatileId)
+                {
+                    if (r4 != 2)
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[r4 + 1]);
+                    else
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[0]);
+                }
+            }
+        }
+    }
+    else
+    {
+        for (y = 0; y < 3; y++)
+        {
+            for (x = 0; x < 3; x++)
+            {
+                s16 metatileId = MapGridGetMetatileIdAt(r5 + x, r3 + y);
+                
+                if (list[2 - r4] == metatileId)
+                {
+                    if (r4 != 2)
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[1 - r4]);
+                    else
+                        MapGridSetMetatileIdAt(r5 + x, r3 + y, c | list[2]);
+                }
+            }
+        }
+    }
+}
+
+static const u16 gUnknown_083CC714[] = {0x284, 0x282, 0x280};
+static const u16 gUnknown_083CC71A[] = {0x285, 0x283, 0x281};
+static const u16 gUnknown_083CC720[] = {0x28C, 0x28A, 0x288};
+static const u16 gUnknown_083CC726[] = {0x28D, 0x28B, 0x289};
+static const u16 gUnknown_083CC72C[] = {0x2A0, 0x2A2, 0x2A4};
+static const u16 gUnknown_083CC732[] = {0x2A1, 0x2A3, 0x2A5};
+static const u16 gUnknown_083CC738[] = {0x2A8, 0x2AA, 0x2AC};
+
+void sub_80B4710(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+
+    data[3] = 1;
+
+    switch (data[0])
+    {
+        case 0:
+            sub_80B45B4(taskId, gUnknown_083CC714, 0);
+            break;
+        case 1:
+            sub_80B45B4(taskId, gUnknown_083CC71A, 0);
+            break;
+        case 2:
+            sub_80B45B4(taskId, gUnknown_083CC720, 0xC00);
+            break;
+        case 3:
+            sub_80B45B4(taskId, gUnknown_083CC726, 0);
+            break;
+        case 4:
+            sub_80B45B4(taskId, gUnknown_083CC72C, 0xC00);
+            break;
+        case 5:
+            sub_80B45B4(taskId, gUnknown_083CC732, 0);
+            break;
+        case 6:
+            sub_80B45B4(taskId, gUnknown_083CC738, 0);
+            break;
+    }
+
+    data[0] = (data[0] + 1) & 7;
+    if (!data[0])
+    {
+        DrawWholeMapView();
+        data[1] = (data[1] + 1) % 3;
+        data[3] = 0;
+    }
+}
+
+u8 sub_80B47D8(u16 var)
+{
+    u8 taskId = CreateTask(sub_80B4710, 0);
+    s16 *data = gTasks[taskId].data;
+
+    PlayerGetDestCoords(&data[4], &data[5]);
+    data[0] = 0;
+    data[1] = 0;
+    data[2] = var;
+    sub_80B4710(taskId);
+    return taskId;
+}
+
+void sub_80B4824(u8 var)
+{
+    gUnknown_02038731 = sub_80B47D8(var);
+}
+
+void sub_80B483C(void)
+{
+    DestroyTask(gUnknown_02038731);
+}
+
+bool8 sub_80B4850(void)
+{
+    if (gTasks[gUnknown_02038731].data[3] == 0 && gTasks[gUnknown_02038731].data[1] == 2)
+        return FALSE;
+    else
+        return TRUE;
+}