through sub_80C144C

3 files changed, 194 insertions, 478 deletions

diff --git a/asm/region_map.s b/asm/region_map.s
index 07764a5e7..55ddb5f9d 100644
--- a/asm/region_map.s
+++ b/asm/region_map.s
@@ -5,471 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_80C1098
-sub_80C1098: @ 80C1098
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r1, _080C10BC @ =gUnknown_20399D8
-	ldr r0, [r1]
-	ldr r3, _080C10C0 @ =0x00001cc8
-	adds r0, r3
-	ldrb r0, [r0]
-	adds r4, r1, 0
-	cmp r0, 0xC
-	bls _080C10B0
-	b _080C1274
-_080C10B0:
-	lsls r0, 2
-	ldr r1, _080C10C4 @ =_080C10C8
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080C10BC: .4byte gUnknown_20399D8
-_080C10C0: .4byte 0x00001cc8
-_080C10C4: .4byte _080C10C8
-	.align 2, 0
-_080C10C8:
-	.4byte _080C10FC
-	.4byte _080C111C
-	.4byte _080C112E
-	.4byte _080C1146
-	.4byte _080C115C
-	.4byte _080C1168
-	.4byte _080C1180
-	.4byte _080C1192
-	.4byte _080C11B0
-	.4byte _080C11BE
-	.4byte _080C1220
-	.4byte _080C1236
-	.4byte _080C1254
-_080C10FC:
-	bl sub_80C08E0
-	ldr r0, _080C1110 @ =gUnknown_8418EBC
-	bl sub_80C4E18
-	ldr r0, _080C1114 @ =gUnknown_20399D8
-	ldr r1, [r0]
-	ldr r0, _080C1118 @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C1110: .4byte gUnknown_8418EBC
-_080C1114: .4byte gUnknown_20399D8
-_080C1118: .4byte 0x00001cc8
-_080C111C:
-	ldr r1, [r4]
-	movs r2, 0x80
-	lsls r2, 5
-	movs r0, 0x2
-	movs r3, 0
-	bl LoadBgTiles
-	ldr r1, [r4]
-	b _080C125E
-_080C112E:
-	ldr r1, [r4]
-	movs r0, 0x80
-	lsls r0, 5
-	adds r1, r0
-	movs r0, 0x2
-	bl sub_80C1324
-	movs r0, 0x2
-	bl CopyBgTilemapBufferToVram
-	ldr r1, [r4]
-	b _080C125E
-_080C1146:
-	bl sub_80C0CA0
-	ldr r0, _080C1154 @ =gUnknown_20399D8
-	ldr r1, [r0]
-	ldr r0, _080C1158 @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C1154: .4byte gUnknown_20399D8
-_080C1158: .4byte 0x00001cc8
-_080C115C:
-	bl sub_80C0FE0
-	movs r0, 0x2
-	bl ShowBg
-	b _080C125A
-_080C1168:
-	bl sub_80C08F4
-	ldr r0, _080C1178 @ =gUnknown_20399D8
-	ldr r1, [r0]
-	ldr r0, _080C117C @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C1178: .4byte gUnknown_20399D8
-_080C117C: .4byte 0x00001cc8
-_080C1180:
-	bl sub_80C1014
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	bl sub_80C1390
-	b _080C125A
-_080C1192:
-	bl sub_80C144C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	ldr r0, _080C11A8 @ =gUnknown_20399D8
-	ldr r1, [r0]
-	ldr r0, _080C11AC @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C11A8: .4byte gUnknown_20399D8
-_080C11AC: .4byte 0x00001cc8
-_080C11B0:
-	bl sub_80C16D0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	b _080C125A
-_080C11BE:
-	bl sub_80C1478
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	ldr r5, _080C1214 @ =gUnknown_20399D8
-	ldr r0, [r5]
-	ldr r4, _080C1218 @ =0x00001cca
-	adds r0, r4
-	ldrb r0, [r0]
-	bl sub_80C0E48
-	bl sub_80C0E34
-	ldr r1, [r5]
-	adds r1, r4
-	lsls r0, 24
-	lsrs r0, 24
-	ldrb r1, [r1]
-	cmp r0, r1
-	bne _080C120C
-	movs r0, 0
-	bl sub_80C4324
-	ldr r0, [r5]
-	adds r0, r4
-	ldrb r0, [r0]
-	movs r1, 0x19
-	movs r2, 0
-	bl sub_80C48BC
-	ldr r0, [r5]
-	adds r0, r4
-	ldrb r0, [r0]
-	movs r1, 0x19
-	movs r2, 0
-	bl sub_80C4960
-_080C120C:
-	ldr r1, [r5]
-	ldr r0, _080C121C @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C1214: .4byte gUnknown_20399D8
-_080C1218: .4byte 0x00001cca
-_080C121C: .4byte 0x00001cc8
-_080C1220:
-	bl sub_80C12EC
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	bl sub_80C1880
-	bl sub_80C0FE0
-	b _080C125A
-_080C1236:
-	bl sub_80C1058
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080C127A
-	ldr r0, _080C124C @ =gUnknown_20399D8
-	ldr r1, [r0]
-	ldr r0, _080C1250 @ =0x00001cc8
-	adds r1, r0
-	b _080C1262
-	.align 2, 0
-_080C124C: .4byte gUnknown_20399D8
-_080C1250: .4byte 0x00001cc8
-_080C1254:
-	movs r0, 0
-	bl sub_80C3154
-_080C125A:
-	ldr r0, _080C126C @ =gUnknown_20399D8
-	ldr r1, [r0]
-_080C125E:
-	ldr r3, _080C1270 @ =0x00001cc8
-	adds r1, r3
-_080C1262:
-	ldrb r0, [r1]
-	adds r0, 0x1
-	strb r0, [r1]
-	b _080C127A
-	.align 2, 0
-_080C126C: .4byte gUnknown_20399D8
-_080C1270: .4byte 0x00001cc8
-_080C1274:
-	adds r0, r2, 0
-	bl sub_80C1280
-_080C127A:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80C1098
-
-	thumb_func_start sub_80C1280
-sub_80C1280: @ 80C1280
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080C12D4 @ =gTasks
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	adds r1, r2
-	ldr r4, _080C12D8 @ =gUnknown_20399D8
-	ldr r0, [r4]
-	ldr r2, _080C12DC @ =0x00001cd0
-	adds r0, r2
-	ldr r0, [r0]
-	str r0, [r1]
-	movs r0, 0x2
-	bl HideBg
-	ldr r0, _080C12E0 @ =gUnknown_8418EB5
-	bl sub_80C4E18
-	ldr r0, _080C12E4 @ =gUnknown_8418EA7
-	bl sub_80C4E74
-	bl sub_80C0AB8
-	bl sub_80C0B9C
-	ldr r1, _080C12E8 @ =gUnknown_83F1B0C+16
-	movs r0, 0
-	bl sub_80C4CF0
-	ldr r0, [r4]
-	cmp r0, 0
-	beq _080C12CC
-	bl Free
-	movs r0, 0
-	str r0, [r4]
-_080C12CC:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080C12D4: .4byte gTasks
-_080C12D8: .4byte gUnknown_20399D8
-_080C12DC: .4byte 0x00001cd0
-_080C12E0: .4byte gUnknown_8418EB5
-_080C12E4: .4byte gUnknown_8418EA7
-_080C12E8: .4byte gUnknown_83F1B0C+16
-	thumb_func_end sub_80C1280
-
-	thumb_func_start sub_80C12EC
-sub_80C12EC: @ 80C12EC
-	push {lr}
-	ldr r0, _080C1308 @ =gUnknown_20399D8
-	ldr r0, [r0]
-	ldr r2, _080C130C @ =0x00001cdc
-	adds r1, r0, r2
-	ldrh r0, [r1]
-	cmp r0, 0
-	bne _080C1310
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x1
-	b _080C131E
-	.align 2, 0
-_080C1308: .4byte gUnknown_20399D8
-_080C130C: .4byte 0x00001cdc
-_080C1310:
-	subs r0, 0x1
-	strh r0, [r1]
-	ldrh r1, [r1]
-	movs r0, 0x54
-	bl SetGpuReg
-	movs r0, 0
-_080C131E:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80C12EC
-
-	thumb_func_start sub_80C1324
-sub_80C1324: @ 80C1324
-	push {r4-r7,lr}
-	adds r7, r1, 0
-	lsls r0, 24
-	ldr r1, _080C1360 @ =gUnknown_20399D4
-	lsrs r0, 12
-	ldr r2, _080C1364 @ =0x00001796
-	adds r0, r2
-	ldr r1, [r1]
-	adds r6, r1, r0
-	movs r1, 0
-_080C1338:
-	movs r2, 0
-	lsls r5, r1, 16
-	asrs r1, r5, 16
-	lsls r3, r1, 5
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r4, r0, 1
-_080C1346:
-	lsls r0, r2, 16
-	asrs r1, r0, 16
-	adds r2, r0, 0
-	cmp r1, 0x1D
-	bgt _080C1368
-	adds r0, r3, r1
-	lsls r0, 1
-	adds r0, r6
-	adds r1, r4, r1
-	lsls r1, 1
-	adds r1, r7
-	ldrh r1, [r1]
-	b _080C1370
-	.align 2, 0
-_080C1360: .4byte gUnknown_20399D4
-_080C1364: .4byte 0x00001796
-_080C1368:
-	adds r0, r3, r1
-	lsls r0, 1
-	adds r0, r6
-	ldrh r1, [r7]
-_080C1370:
-	strh r1, [r0]
-	movs r1, 0x80
-	lsls r1, 9
-	adds r0, r2, r1
-	lsrs r2, r0, 16
-	asrs r0, 16
-	cmp r0, 0x1F
-	ble _080C1346
-	adds r0, r5, r1
-	lsrs r1, r0, 16
-	asrs r0, 16
-	cmp r0, 0x13
-	ble _080C1338
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80C1324
-
-	thumb_func_start sub_80C1390
-sub_80C1390: @ 80C1390
-	push {r4,r5,lr}
-	sub sp, 0x8
-	ldr r0, _080C1428 @ =gUnknown_20399D8
-	ldr r2, [r0]
-	ldr r1, _080C142C @ =0x00001cd4
-	adds r0, r2, r1
-	movs r1, 0x48
-	strh r1, [r0]
-	ldr r5, _080C1430 @ =0xffff0000
-	ldr r0, [sp]
-	ands r0, r5
-	orrs r0, r1
-	str r0, [sp]
-	ldr r0, _080C1434 @ =0x00001cce
-	adds r3, r2, r0
-	ldr r1, _080C1438 @ =0x00001cca
-	adds r0, r2, r1
-	ldrb r1, [r0]
-	lsls r1, 2
-	ldrh r3, [r3]
-	adds r1, r3
-	lsls r1, 3
-	ldr r0, _080C143C @ =0x00001cd6
-	adds r4, r2, r0
-	strh r1, [r4]
-	lsls r1, 16
-	ldr r3, _080C1440 @ =0x0000ffff
-	ldr r0, [sp]
-	ands r0, r3
-	orrs r0, r1
-	str r0, [sp]
-	ldr r1, _080C1444 @ =0x00001cd8
-	adds r0, r2, r1
-	movs r1, 0xA8
-	strh r1, [r0]
-	ldr r0, [sp, 0x4]
-	ands r0, r5
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	ldrh r1, [r4]
-	adds r1, 0x20
-	ldr r0, _080C1448 @ =0x00001cda
-	adds r2, r0
-	strh r1, [r2]
-	ands r1, r3
-	lsls r1, 16
-	ldr r0, [sp, 0x4]
-	ands r0, r3
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	bl sub_80C4BE4
-	movs r0, 0
-	movs r1, 0x15
-	movs r2, 0xC0
-	bl sub_80C4C2C
-	movs r0, 0x1F
-	movs r1, 0x15
-	bl sub_80C4C74
-	movs r0, 0x3F
-	bl sub_80C4C88
-	movs r0, 0x1
-	movs r1, 0
-	bl sub_80C4C9C
-	movs r0, 0x1
-	mov r1, sp
-	bl sub_80C4CF0
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080C1428: .4byte gUnknown_20399D8
-_080C142C: .4byte 0x00001cd4
-_080C1430: .4byte 0xffff0000
-_080C1434: .4byte 0x00001cce
-_080C1438: .4byte 0x00001cca
-_080C143C: .4byte 0x00001cd6
-_080C1440: .4byte 0x0000ffff
-_080C1444: .4byte 0x00001cd8
-_080C1448: .4byte 0x00001cda
-	thumb_func_end sub_80C1390
-
-	thumb_func_start sub_80C144C
-sub_80C144C: @ 80C144C
-	push {lr}
-	ldr r0, _080C1460 @ =gUnknown_20399D8
-	ldr r0, [r0]
-	ldr r2, _080C1464 @ =0x00001cdc
-	adds r1, r0, r2
-	ldrh r0, [r1]
-	cmp r0, 0x5
-	bls _080C1468
-	movs r0, 0x1
-	b _080C1474
-	.align 2, 0
-_080C1460: .4byte gUnknown_20399D8
-_080C1464: .4byte 0x00001cdc
-_080C1468:
-	adds r0, 0x1
-	strh r0, [r1]
-	ldrh r0, [r1]
-	bl sub_80C4C48
-	movs r0, 0
-_080C1474:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80C144C
-
 	thumb_func_start sub_80C1478
 sub_80C1478: @ 80C1478
 	push {r4-r7,lr}
diff --git a/include/strings.h b/include/strings.h
index 4e8abffc3..9895ffbf8 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -1010,5 +1010,6 @@ extern const u8 gUnknown_8418E8D[];
 extern const u8 gUnknown_8418E95[];
 extern const u8 gUnknown_8418EA7[];
 extern const u8 gUnknown_8418EB0[];
+extern const u8 gUnknown_8418EBC[];
 
 #endif //GUARD_STRINGS_H
diff --git a/src/region_map.c b/src/region_map.c
index d4f1ed99e..8394b59d6 100644
--- a/src/region_map.c
+++ b/src/region_map.c
@@ -46,7 +46,7 @@ struct UnkStruct_20399D4
 struct UnkStruct_20399D8
 {
     u8 field_0000[0x1000];
-    u8 field_1000[0x4B0];
+    u16 field_1000[0x258];
     u8 filler_14B0[0x408];
     u16 field_18B8;
     u8 filler_18BA[0x40A];
@@ -60,9 +60,18 @@ struct UnkStruct_20399D8
     u8 field_1CCD;
     u16 field_1CCE;
     TaskFunc field_1CD0;
-    u8 filler_1CD4[0xC];
+    u16 field_1CD4[4];
+    u16 field_1CDC;
 }; // size = 0x1CE0
 
+struct UnkStruct_80C4CF0
+{
+    u16 v0;
+    u16 v2;
+    u16 v4;
+    u16 v6;
+};
+
 EWRAM_DATA struct UnkStruct_20399D4 * gUnknown_20399D4 = NULL;
 EWRAM_DATA struct UnkStruct_20399D8 * gUnknown_20399D8 = NULL;
 EWRAM_DATA void * gUnknown_20399DC = NULL;
@@ -91,7 +100,19 @@ void sub_80C0AB8(void);
 void sub_80C0B18(void);
 void sub_80C0B9C(void);
 void sub_80C0BB0(void);
+void sub_80C0CC8(u8 bg, u16 *map);
+bool8 sub_80C0E04(u8 a0);
+u8 sub_80C0E20(void);
+void sub_80C0E70(u8 a0, u8 taskId, TaskFunc taskFunc);
 void sub_80C1098(u8 taskId);
+void sub_80C1280(u8 taskId);
+bool8 sub_80C12EC(void);
+void sub_80C1324(u8 bg, u16 *map);
+void sub_80C1390(void);
+bool8 sub_80C144C(void);
+bool8 sub_80C1478(void);
+bool8 sub_80C16D0(void);
+void sub_80C1880(void);
 void sub_80C4AAC(u8 a0);
 void sub_80C4BE4(void);
 void sub_80C4C2C(u8 a0, u16 a1, u16 a2);
@@ -100,11 +121,7 @@ void sub_80C4C5C(u16 a0);
 void sub_80C4C74(u16 a0, u16 a1);
 void sub_80C4C88(u16 a0);
 void sub_80C4C9C(u8 a0, u8 a1);
-void sub_80C0CC8(u8 bg, u16 *map);
-void sub_80C4CF0(u8 a0, const u16 *a1);
-bool8 sub_80C0E04(u8 a0);
-u8 sub_80C0E20(void);
-void sub_80C0E70(u8 a0, u8 taskId, TaskFunc taskFunc);
+void sub_80C4CF0(u8 a0, const struct UnkStruct_80C4CF0 *a1);
 void sub_80C195C(u8 a0, u8 taskId, TaskFunc taskFunc);
 void sub_80C2208(u8 taskId, TaskFunc taskFunc);
 void sub_80C25BC(void);
@@ -152,7 +169,7 @@ extern const struct WindowTemplate gUnknown_83F1A60[];
 extern const u8 gUnknown_83F1A90[];
 extern const u8 sSeviiMapsecs[3][30];
 extern const u8 gUnknown_83F1B00[3][4];
-extern const u16 gUnknown_83F1B0C[3][4];
+extern const struct UnkStruct_80C4CF0 gUnknown_83F1B0C[3];
 extern const u8 *const gUnknown_83F1A9C[];
 extern const u8 *const gUnknown_83F1CAC[];
 
@@ -651,8 +668,8 @@ void sub_80C0AB8(void)
     sub_80C4C48(6);
     sub_80C4C74(0x39, 0x39);
     sub_80C4C88(0x1b);
-    sub_80C4CF0(0, gUnknown_83F1B0C[0]);
-    sub_80C4CF0(1, gUnknown_83F1B0C[1]);
+    sub_80C4CF0(0, &gUnknown_83F1B0C[0]);
+    sub_80C4CF0(1, &gUnknown_83F1B0C[1]);
     sub_80C4C9C(0, 0);
     if (sub_80C3580() != MAPSEC_NONE)
         sub_80C4C9C(1, 0);
@@ -664,7 +681,7 @@ void sub_80C0B18(void)
     FillWindowPixelBuffer(0, PIXEL_FILL(0));
     if (sub_80C3520() == MAPSEC_NONE)
     {
-        sub_80C4CF0(0, gUnknown_83F1B0C[2]);
+        sub_80C4CF0(0, &gUnknown_83F1B0C[2]);
     }
     else
     {
@@ -672,13 +689,13 @@ void sub_80C0B18(void)
         AddTextPrinterParameterized3(0, 2, 2, 2, gUnknown_83F1A90, 0, gUnknown_20399D4->field_0000);
         PutWindowTilemap(0);
         CopyWindowToVram(0, 2);
-        sub_80C4CF0(0, gUnknown_83F1B0C[0]);
+        sub_80C4CF0(0, &gUnknown_83F1B0C[0]);
     }
 }
 
 void sub_80C0B9C(void)
 {
-    sub_80C4CF0(1, gUnknown_83F1B0C[1]);
+    sub_80C4CF0(1, &gUnknown_83F1B0C[1]);
 }
 
 void sub_80C0BB0(void)
@@ -843,3 +860,166 @@ bool8 sub_80C1058(void)
         return TRUE;
     }
 }
+
+void sub_80C1098(u8 taskId)
+{
+    switch (gUnknown_20399D8->field_1CC8)
+    {
+    case 0:
+        sub_80C08E0();
+        sub_80C4E18(gUnknown_8418EBC);
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 1:
+        LoadBgTiles(2, gUnknown_20399D8->field_0000, 0x1000, 0x000);
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 2:
+        sub_80C1324(2, gUnknown_20399D8->field_1000);
+        CopyBgTilemapBufferToVram(2);
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 3:
+        sub_80C0CA0();
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 4:
+        sub_80C0FE0();
+        ShowBg(2);
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 5:
+        sub_80C08F4();
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    case 6:
+        if (sub_80C1014() == TRUE)
+        {
+            sub_80C1390();
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 7:
+        if (sub_80C144C() == TRUE)
+        {
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 8:
+        if (sub_80C16D0() == TRUE)
+        {
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 9:
+        if (sub_80C1478() == TRUE)
+        {
+            sub_80C0E48(gUnknown_20399D8->field_1CCA);
+            if (sub_80C0E34() == gUnknown_20399D8->field_1CCA)
+            {
+                sub_80C4324(0);
+                sub_80C48BC(gUnknown_20399D8->field_1CCA, 25, 0);
+                sub_80C4960(gUnknown_20399D8->field_1CCA, 25, 0);
+            }
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 10:
+        if (sub_80C12EC() == TRUE)
+        {
+            sub_80C1880();
+            sub_80C0FE0();
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 11:
+        if (sub_80C1058() == TRUE)
+        {
+            gUnknown_20399D8->field_1CC8++;
+        }
+        break;
+    case 12:
+        sub_80C3154(0);
+        gUnknown_20399D8->field_1CC8++;
+        break;
+    default:
+        sub_80C1280(taskId);
+        break;
+    }
+}
+
+void sub_80C1280(u8 taskId)
+{
+    gTasks[taskId].func = gUnknown_20399D8->field_1CD0;
+    HideBg(2);
+    sub_80C4E18(gUnknown_8418EB5);
+    sub_80C4E74(gUnknown_8418EA7);
+    sub_80C0AB8();
+    sub_80C0B9C();
+    sub_80C4CF0(0, &gUnknown_83F1B0C[2]);
+    if (gUnknown_20399D8 != NULL)
+    {
+        FREE_AND_SET_NULL(gUnknown_20399D8);
+    }
+}
+
+bool8 sub_80C12EC(void)
+{
+    if (gUnknown_20399D8->field_1CDC != 0)
+    {
+        gUnknown_20399D8->field_1CDC--;
+        SetGpuReg(REG_OFFSET_BLDY, gUnknown_20399D8->field_1CDC);
+        return FALSE;
+    }
+    else
+    {
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+        return TRUE;
+    }
+}
+
+void sub_80C1324(u8 bg, u16 *map)
+{
+    s16 i;
+    s16 j;
+    u16 *buffer = gUnknown_20399D4->field_1796[bg];
+    for (i = 0; i < 20; i++)
+    {
+        for (j = 0; j < 32; j++)
+        {
+            if (j < 30)
+                buffer[32 * i + j] = map[30 * i + j];
+            else
+                buffer[32 * i + j] = map[0];
+        }
+    }
+}
+
+void sub_80C1390(void)
+{
+    struct UnkStruct_80C4CF0 data;
+    data.v0 = gUnknown_20399D8->field_1CD4[0] = 0x48;
+    data.v2 = gUnknown_20399D8->field_1CD4[1] = 8 * (gUnknown_20399D8->field_1CCE + 4 * gUnknown_20399D8->field_1CCA);
+    data.v4 = gUnknown_20399D8->field_1CD4[2] = 0xA8;
+    data.v6 = gUnknown_20399D8->field_1CD4[3] = gUnknown_20399D8->field_1CD4[1] + 32;
+    sub_80C4BE4();
+    sub_80C4C2C(0, 0x15, 0xc0);
+    sub_80C4C74(0x1f, 0x15);
+    sub_80C4C88(0x3f);
+    sub_80C4C9C(1, 0);
+    sub_80C4CF0(1, &data);
+}
+
+bool8 sub_80C144C(void)
+{
+    if (gUnknown_20399D8->field_1CDC < 6)
+    {
+        gUnknown_20399D8->field_1CDC++;
+        sub_80C4C48(gUnknown_20399D8->field_1CDC);
+        return FALSE;
+    }
+    else
+    {
+        return TRUE;
+    }
+}