Several smaller functions in decoration.s

3 files changed, 173 insertions, 545 deletions

diff --git a/asm/decoration.s b/asm/decoration.s
index ede4f6ace..deb3e7d0d 100755
--- a/asm/decoration.s
+++ b/asm/decoration.s
@@ -8,550 +8,6 @@
 
 .equiv ewram_1f000, 0x0201f000
 
-	thumb_func_start sub_8100038
-sub_8100038: @ 8100038
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _0810006C @ =gUnknown_020388F5
-	ldrb r1, [r0]
-	ldr r0, _08100070 @ =gUnknown_020388D0
-	ldr r0, [r0]
-	adds r0, r1
-	ldrb r1, [r0]
-	lsls r1, 5
-	ldr r0, _08100074 @ =gDecorations
-	adds r1, r0
-	adds r0, r4, 0
-	bl sub_80FFC24
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08100080
-	ldr r1, _08100078 @ =gSecretBaseText_PlaceItHere
-	ldr r2, _0810007C @ =sub_81000A0
-	adds r0, r4, 0
-	movs r3, 0
-	bl DisplayItemMessageOnField
-	b _08100092
-	.align 2, 0
-_0810006C: .4byte gUnknown_020388F5
-_08100070: .4byte gUnknown_020388D0
-_08100074: .4byte gDecorations
-_08100078: .4byte gSecretBaseText_PlaceItHere
-_0810007C: .4byte sub_81000A0
-_08100080:
-	movs r0, 0x20
-	bl PlaySE
-	ldr r1, _08100098 @ =gSecretBaseText_CantBePlacedHere
-	ldr r2, _0810009C @ =sub_81006A8
-	adds r0, r4, 0
-	movs r3, 0
-	bl DisplayItemMessageOnField
-_08100092:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08100098: .4byte gSecretBaseText_CantBePlacedHere
-_0810009C: .4byte sub_81006A8
-	thumb_func_end sub_8100038
-
-	thumb_func_start sub_81000A0
-sub_81000A0: @ 81000A0
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0x14
-	movs r1, 0x8
-	movs r2, 0x1
-	bl DisplayYesNoMenu
-	ldr r1, _081000C0 @ =gUnknown_083EC95C
-	adds r0, r4, 0
-	bl sub_80F914C
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_081000C0: .4byte gUnknown_083EC95C
-	thumb_func_end sub_81000A0
-
-	thumb_func_start sub_81000C4
-sub_81000C4: @ 81000C4
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0x1D
-	movs r3, 0x13
-	bl MenuZeroFillWindowRect
-	adds r0, r4, 0
-	bl sub_8100174
-	ldr r2, _0810010C @ =gDecorations
-	ldr r0, _08100110 @ =gUnknown_020388F5
-	ldrb r1, [r0]
-	ldr r0, _08100114 @ =gUnknown_020388D0
-	ldr r0, [r0]
-	adds r0, r1
-	ldrb r3, [r0]
-	lsls r0, r3, 5
-	adds r0, r2
-	ldrb r0, [r0, 0x11]
-	cmp r0, 0x4
-	beq _0810011C
-	ldr r0, _08100118 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldrh r0, [r1, 0x8]
-	ldrh r1, [r1, 0xA]
-	adds r2, r3, 0
-	bl sub_80FF394
-	b _0810013C
-	.align 2, 0
-_0810010C: .4byte gDecorations
-_08100110: .4byte gUnknown_020388F5
-_08100114: .4byte gUnknown_020388D0
-_08100118: .4byte gTasks
-_0810011C:
-	ldr r2, _0810015C @ =gUnknown_020391A4
-	ldr r0, _08100160 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldrh r0, [r1, 0x8]
-	subs r0, 0x7
-	strh r0, [r2]
-	ldr r2, _08100164 @ =gUnknown_020391A6
-	ldrh r0, [r1, 0xA]
-	subs r0, 0x7
-	strh r0, [r2]
-	ldr r0, _08100168 @ =gUnknown_081A2F7B
-	bl ScriptContext1_SetupScript
-_0810013C:
-	ldr r2, _0810016C @ =gSprites
-	ldr r0, _08100170 @ =gUnknown_020391A8
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r2
-	ldrh r1, [r0, 0x22]
-	adds r1, 0x2
-	strh r1, [r0, 0x22]
-	adds r0, r4, 0
-	bl sub_810028C
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810015C: .4byte gUnknown_020391A4
-_08100160: .4byte gTasks
-_08100164: .4byte gUnknown_020391A6
-_08100168: .4byte gUnknown_081A2F7B
-_0810016C: .4byte gSprites
-_08100170: .4byte gUnknown_020391A8
-	thumb_func_end sub_81000C4
-
-	thumb_func_start sub_8100174
-sub_8100174: @ 8100174
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r6, r0, 24
-	movs r3, 0
-	ldr r0, _081001B0 @ =ewram_1f000
-	ldrb r1, [r0, 0x8]
-	adds r5, r0, 0
-	cmp r3, r1
-	bcs _0810019A
-	ldr r4, [r5]
-_08100188:
-	adds r2, r4, r3
-	ldrb r0, [r2]
-	cmp r0, 0
-	beq _081001B8
-	adds r0, r3, 0x1
-	lsls r0, 16
-	lsrs r3, r0, 16
-	cmp r3, r1
-	bcc _08100188
-_0810019A:
-	ldrb r0, [r5, 0x9]
-	cmp r0, 0
-	bne _08100204
-	movs r3, 0
-	ldr r0, _081001B4 @ =gUnknown_020388D6
-	ldrb r1, [r0]
-	adds r2, r0, 0
-	cmp r1, 0
-	bne _081001F0
-	b _08100210
-	.align 2, 0
-_081001B0: .4byte ewram_1f000
-_081001B4: .4byte gUnknown_020388D6
-_081001B8:
-	ldr r0, _081001E4 @ =gUnknown_020388F5
-	ldrb r1, [r0]
-	ldr r0, _081001E8 @ =gUnknown_020388D0
-	ldr r0, [r0]
-	adds r0, r1
-	ldrb r0, [r0]
-	strb r0, [r2]
-	ldr r2, [r5, 0x4]
-	adds r2, r3
-	ldr r0, _081001EC @ =gTasks
-	lsls r1, r6, 2
-	adds r1, r6
-	lsls r1, 3
-	adds r1, r0
-	ldrb r0, [r1, 0x8]
-	subs r0, 0x7
-	lsls r0, 4
-	ldrb r1, [r1, 0xA]
-	subs r1, 0x7
-	adds r0, r1
-	strb r0, [r2]
-	b _0810019A
-	.align 2, 0
-_081001E4: .4byte gUnknown_020388F5
-_081001E8: .4byte gUnknown_020388D0
-_081001EC: .4byte gTasks
-_081001F0:
-	adds r0, r3, 0x1
-	lsls r0, 16
-	lsrs r3, r0, 16
-	cmp r3, 0xF
-	bhi _0810023E
-	adds r1, r3, r2
-	ldrb r0, [r1]
-	cmp r0, 0
-	bne _081001F0
-	b _08100236
-_08100204:
-	movs r3, 0
-	ldr r0, _0810021C @ =gUnknown_020388E6
-	ldrb r1, [r0]
-	adds r2, r0, 0
-	cmp r1, 0
-	bne _08100224
-_08100210:
-	ldr r0, _08100220 @ =gUnknown_020388F5
-	ldrb r0, [r0]
-	adds r0, 0x1
-	strb r0, [r2]
-	b _0810023E
-	.align 2, 0
-_0810021C: .4byte gUnknown_020388E6
-_08100220: .4byte gUnknown_020388F5
-_08100224:
-	adds r0, r3, 0x1
-	lsls r0, 16
-	lsrs r3, r0, 16
-	cmp r3, 0xB
-	bhi _0810023E
-	adds r1, r3, r2
-	ldrb r0, [r1]
-	cmp r0, 0
-	bne _08100224
-_08100236:
-	ldr r0, _08100244 @ =gUnknown_020388F5
-	ldrb r0, [r0]
-	adds r0, 0x1
-	strb r0, [r1]
-_0810023E:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08100244: .4byte gUnknown_020388F5
-	thumb_func_end sub_8100174
-
-	thumb_func_start sub_8100248
-sub_8100248: @ 8100248
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0x14
-	movs r1, 0x8
-	movs r2, 0x1
-	bl DisplayYesNoMenu
-	ldr r1, _08100268 @ =gUnknown_083EC964
-	adds r0, r4, 0
-	bl sub_80F914C
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08100268: .4byte gUnknown_083EC964
-	thumb_func_end sub_8100248
-
-	thumb_func_start sub_810026C
-sub_810026C: @ 810026C
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0x1D
-	movs r3, 0x13
-	bl MenuZeroFillWindowRect
-	adds r0, r4, 0
-	bl sub_810028C
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_810026C
-
-	thumb_func_start sub_810028C
-sub_810028C: @ 810028C
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r1, _081002B4 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0
-	strh r1, [r0, 0xC]
-	ldr r1, _081002B8 @ =c1_overworld_prev_quest
-	str r1, [r0]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_081002B4: .4byte gTasks
-_081002B8: .4byte c1_overworld_prev_quest
-	thumb_func_end sub_810028C
-
-	thumb_func_start c1_overworld_prev_quest
-c1_overworld_prev_quest: @ 81002BC
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r1, _081002DC @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xC
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	beq _081002E0
-	cmp r0, 0x1
-	beq _08100300
-	b _0810031C
-	.align 2, 0
-_081002DC: .4byte gTasks
-_081002E0:
-	bl ScriptContext2_Enable
-	ldr r0, _081002FC @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0810031C
-	adds r0, r4, 0
-	bl sub_80FF114
-	movs r0, 0x1
-	strh r0, [r5, 0xC]
-	b _0810031C
-	.align 2, 0
-_081002FC: .4byte gPaletteFade
-_08100300:
-	bl sub_81016F4
-	ldr r0, _08100324 @ =0x00000bb8
-	bl FreeSpritePaletteByTag
-	ldr r1, _08100328 @ =gUnknown_0300485C
-	ldr r0, _0810032C @ =sub_8100364
-	str r0, [r1]
-	ldr r0, _08100330 @ =c2_exit_to_overworld_2_switch
-	bl SetMainCallback2
-	adds r0, r4, 0
-	bl DestroyTask
-_0810031C:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08100324: .4byte 0x00000bb8
-_08100328: .4byte gUnknown_0300485C
-_0810032C: .4byte sub_8100364
-_08100330: .4byte c2_exit_to_overworld_2_switch
-	thumb_func_end c1_overworld_prev_quest
-
-	thumb_func_start sub_8100334
-sub_8100334: @ 8100334
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	bl sub_807D770
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08100354
-	ldr r0, _0810035C @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, _08100360 @ =sub_80FE948
-	str r0, [r1]
-_08100354:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810035C: .4byte gTasks
-_08100360: .4byte sub_80FE948
-	thumb_func_end sub_8100334
-
-	thumb_func_start sub_8100364
-sub_8100364: @ 8100364
-	push {lr}
-	bl ScriptContext2_Enable
-	bl LoadScrollIndicatorPalette
-	bl pal_fill_black
-	ldr r0, _08100388 @ =sub_8100334
-	movs r1, 0x8
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_80FE7EC
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08100388: .4byte sub_8100334
-	thumb_func_end sub_8100364
-
-	thumb_func_start sub_810038C
-sub_810038C: @ 810038C
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, _081003BC @ =gTasks + 0x8
-	adds r2, r1, r0
-	ldr r0, _081003C0 @ =gUnknown_020391AA
-	ldrb r1, [r0]
-	adds r3, r0, 0
-	cmp r1, 0x1
-	bne _081003C4
-	movs r1, 0x2
-	ldrsh r0, [r2, r1]
-	movs r4, 0xC
-	ldrsh r1, [r2, r4]
-	subs r0, r1
-	subs r0, 0x6
-	cmp r0, 0
-	bge _081003C4
-	ldrh r0, [r2, 0x2]
-	adds r0, 0x1
-	b _081003DE
-	.align 2, 0
-_081003BC: .4byte gTasks + 0x8
-_081003C0: .4byte gUnknown_020391AA
-_081003C4:
-	ldrb r0, [r3]
-	cmp r0, 0x2
-	bne _081003E8
-	movs r0, 0x2
-	ldrsh r1, [r2, r0]
-	subs r1, 0x7
-	ldr r0, _081003E4 @ =gMapHeader
-	ldr r0, [r0]
-	ldr r0, [r0, 0x4]
-	cmp r1, r0
-	blt _081003E8
-	ldrh r0, [r2, 0x2]
-	subs r0, 0x1
-_081003DE:
-	strh r0, [r2, 0x2]
-	movs r0, 0
-	b _0810042A
-	.align 2, 0
-_081003E4: .4byte gMapHeader
-_081003E8:
-	ldrb r0, [r3]
-	cmp r0, 0x3
-	bne _081003FE
-	movs r1, 0
-	ldrsh r0, [r2, r1]
-	subs r0, 0x7
-	cmp r0, 0
-	bge _081003FE
-	ldrh r0, [r2]
-	adds r0, 0x1
-	b _0810041E
-_081003FE:
-	ldrb r0, [r3]
-	cmp r0, 0x4
-	bne _08100428
-	movs r3, 0
-	ldrsh r1, [r2, r3]
-	movs r4, 0xA
-	ldrsh r0, [r2, r4]
-	adds r1, r0
-	subs r1, 0x8
-	ldr r0, _08100424 @ =gMapHeader
-	ldr r0, [r0]
-	ldr r0, [r0]
-	cmp r1, r0
-	blt _08100428
-	ldrh r0, [r2]
-	subs r0, 0x1
-_0810041E:
-	strh r0, [r2]
-	movs r0, 0
-	b _0810042A
-	.align 2, 0
-_08100424: .4byte gMapHeader
-_08100428:
-	movs r0, 0x1
-_0810042A:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_810038C
-
-	thumb_func_start sub_8100430
-sub_8100430: @ 8100430
-	push {lr}
-	ldr r0, _08100450 @ =gMain
-	ldrh r0, [r0, 0x2C]
-	movs r1, 0xF0
-	ands r1, r0
-	cmp r1, 0x40
-	beq _08100454
-	cmp r1, 0x80
-	beq _08100454
-	cmp r1, 0x20
-	beq _08100454
-	cmp r1, 0x10
-	beq _08100454
-	movs r0, 0
-	b _08100456
-	.align 2, 0
-_08100450: .4byte gMain
-_08100454:
-	movs r0, 0x1
-_08100456:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8100430
-
 	thumb_func_start sub_810045C
 sub_810045C: @ 810045C
 	push {r4,lr}
diff --git a/include/decoration.h b/include/decoration.h
index a055347c6..c0feade2b 100755
--- a/include/decoration.h
+++ b/include/decoration.h
@@ -189,6 +189,7 @@ extern const struct SpriteTemplate gSpriteTemplate_83EC93C;
 extern struct Decoration gDecorations[0x77];
 extern struct UnkStruct_02038900 gUnknown_02038900;
 extern u8 *gUnknown_020388D0;
+extern Script gUnknown_081A2F7B;
 
 extern u8 gUnknown_020388D4;
 extern u8 gUnknown_020388D5;
@@ -206,6 +207,8 @@ extern u16 gUnknown_020391A4;
 extern u16 gUnknown_020391A6;
 extern u8 gUnknown_020391A8;
 extern u8 gUnknown_020391A9;
+extern u8 gUnknown_020391AA;
+extern void (*gUnknown_0300485C)(void);
 
 extern const u16 gUnknown_083EC654[3];
 extern const struct DecorationInventory gDecorationInventories[];
@@ -218,6 +221,8 @@ extern const u8 gUnknown_083EC65A[];
 extern const u8 gUnknown_083EC97C[];
 extern const u8 gUnknown_083EC984[];
 extern void sub_80B3068(u8); // src/shop
+extern const struct YesNoFuncTable gUnknown_083EC95C;
+extern const struct YesNoFuncTable gUnknown_083EC964;
 
 extern u8 sub_8134194(u8); // src/decoration_inventory
 extern bool8 sub_81341D4(void); // src/decoration_inventory
@@ -257,14 +262,21 @@ void sub_80FF960(u8);
 void AddDecorationIconObjectFromFieldObject(struct UnkStruct_02038900 *, u8);
 void SetUpPlacingDecorationPlayerAvatar(u8, struct UnkStruct_02038900 *);
 void sub_8100038(u8);
+void sub_81000A0(u8);
+void sub_8100174(u8);
 void sub_8100248(u8);
+void sub_810028C(u8);
+void c1_overworld_prev_quest(u8);
+void sub_8100364(void);
 void sub_810045C(void);
 void sub_810065C(u8);
+void sub_81006A8(u8);
 void sub_81006D0(struct UnkStruct_02038900 *);
 void sub_810070C(u16 *, int);
 void sub_8100874(struct UnkStruct_02038900 *);
 void sub_81008BC(struct UnkStruct_02038900 *);
 void sub_8100930(u8);
 void sub_81009A8(struct Sprite *);
+void sub_81016F4(void);
 
 #endif // GUARD_DECORATION_H
diff --git a/src/decoration.c b/src/decoration.c
index 63fe83b48..a001ffba9 100755
--- a/src/decoration.c
+++ b/src/decoration.c
@@ -5,6 +5,7 @@
 #include "songs.h"
 #include "string_util.h"
 #include "menu.h"
+#include "menu_helpers.h"
 #include "strings.h"
 #include "script.h"
 #include "palette.h"
@@ -1636,5 +1637,164 @@ bool8 sub_80FFC24(u8 taskId, struct Decoration *decoration)
     "\tbx r1\n"
     ".syntax divided\n");
 }
-
 #endif
+
+void sub_8100038(u8 taskId)
+{
+    if (sub_80FFC24(taskId, &gDecorations[gUnknown_020388D0[gUnknown_020388F5]]) == 1)
+    {
+        DisplayItemMessageOnField(taskId, gSecretBaseText_PlaceItHere, sub_81000A0, 0);
+    } else
+    {
+        PlaySE(SE_HAZURE);
+        DisplayItemMessageOnField(taskId, gSecretBaseText_CantBePlacedHere, sub_81006A8, 0);
+    }
+}
+
+void sub_81000A0(u8 taskId)
+{
+    DisplayYesNoMenu(20, 8, 1);
+    sub_80F914C(taskId, &gUnknown_083EC95C);
+}
+
+void sub_81000C4(u8 taskId)
+{
+    MenuZeroFillWindowRect(0, 0, 29, 19);
+    sub_8100174(taskId);
+    if (gDecorations[gUnknown_020388D0[gUnknown_020388F5]].decor_field_11 != 4)
+    {
+        sub_80FF394(gTasks[taskId].data[0], gTasks[taskId].data[1], gUnknown_020388D0[gUnknown_020388F5]);
+    } else
+    {
+        gUnknown_020391A4 = gTasks[taskId].data[0] - 7;
+        gUnknown_020391A6 = gTasks[taskId].data[1] - 7;
+        ScriptContext1_SetupScript(gUnknown_081A2F7B);
+    }
+    gSprites[gUnknown_020391A8].pos1.y += 2;
+    sub_810028C(taskId);
+}
+
+void sub_8100174(u8 taskId)
+{
+    u16 i;
+    for (i=0; i<ewram_1f000.size; i++)
+    {
+        if (ewram_1f000.items[i] == 0)
+        {
+            ewram_1f000.items[i] = gUnknown_020388D0[gUnknown_020388F5];
+            ewram_1f000.pos[i] = ((gTasks[taskId].data[0] - 7) << 4) + (gTasks[taskId].data[1] - 7);
+            break;
+        }
+    }
+    if (!ewram_1f000.isPlayerRoom)
+    {
+        for (i=0; i<16; i++)
+        {
+            if (gUnknown_020388D6[i] == 0)
+            {
+                gUnknown_020388D6[i] = gUnknown_020388F5 + 1;
+                break;
+            }
+        }
+    } else
+    {
+        for (i=0; i<12; i++)
+        {
+            if (gUnknown_020388E6[i] == 0)
+            {
+                gUnknown_020388E6[i] = gUnknown_020388F5 + 1;
+                break;
+            }
+        }
+    }
+}
+
+void sub_8100248(u8 taskId)
+{
+    DisplayYesNoMenu(20, 8, 1);
+    sub_80F914C(taskId, &gUnknown_083EC964);
+}
+
+void sub_810026C(u8 taskId)
+{
+    MenuZeroFillWindowRect(0, 0, 29, 19);
+    sub_810028C(taskId);
+}
+
+void sub_810028C(u8 taskId)
+{
+    fade_screen(1, 0);
+    gTasks[taskId].data[2] = 0;
+    gTasks[taskId].func = c1_overworld_prev_quest;
+}
+
+void c1_overworld_prev_quest(u8 taskId)
+{
+    switch (gTasks[taskId].data[2])
+    {
+        case 0:
+            ScriptContext2_Enable();
+            if (!gPaletteFade.active)
+            {
+                sub_80FF114(taskId);
+                gTasks[taskId].data[2] = 1;
+            }
+            break;
+        case 1:
+            sub_81016F4();
+            FreeSpritePaletteByTag(0xbb8);
+            gUnknown_0300485C = &sub_8100364;
+            SetMainCallback2(c2_exit_to_overworld_2_switch);
+            DestroyTask(taskId);
+            break;
+    }
+}
+
+void sub_8100334(u8 taskId)
+{
+    if (sub_807D770() == 1)
+    {
+        gTasks[taskId].func = sub_80FE948;
+    }
+}
+
+void sub_8100364(void)
+{
+    ScriptContext2_Enable();
+    LoadScrollIndicatorPalette();
+    pal_fill_black();
+    sub_80FE7EC(CreateTask(sub_8100334, 8));
+}
+
+bool8 sub_810038C(u8 taskId)
+{
+    s16 *data;
+    data = gTasks[taskId].data;
+    if (gUnknown_020391AA == DIR_SOUTH && data[1] - data[6] - 6 < 0)
+    {
+        data[1]++;
+        return FALSE;
+    } else if (gUnknown_020391AA == DIR_NORTH && data[1] - 7 >= gMapHeader.mapData->height)
+    {
+        data[1]--;
+        return FALSE;
+    } else if (gUnknown_020391AA == DIR_WEST && data[0] - 7 < 0)
+    {
+        data[0]++;
+        return FALSE;
+    } else if (gUnknown_020391AA == DIR_EAST && data[0] + data[5] - 8 >= gMapHeader.mapData->width)
+    {
+        data[0]--;
+        return FALSE;
+    }
+    return TRUE;
+}
+
+bool8 sub_8100430(void)
+{
+    if ((gMain.heldKeys & 0xF0) != DPAD_UP && (gMain.heldKeys & 0xF0) != DPAD_DOWN && (gMain.heldKeys & 0xF0) != DPAD_LEFT && (gMain.heldKeys & 0xF0) != DPAD_RIGHT)
+    {
+        return FALSE;
+    }
+    return TRUE;
+}