Port berry_crush.c part 1 from Emerald

8 files changed, 416 insertions, 599 deletions

diff --git a/asm/berry_crush.s b/asm/berry_crush.s
deleted file mode 100644
index 728e87128..000000000
--- a/asm/berry_crush.s
+++ /dev/null
@@ -1,580 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_814B6F0
-sub_814B6F0: @ 814B6F0
-	ldr r0, _0814B6F8 @ =gUnknown_203F3DC
-	ldr r0, [r0]
-	bx lr
-	.align 2, 0
-_0814B6F8: .4byte gUnknown_203F3DC
-	thumb_func_end sub_814B6F0
-
-	thumb_func_start sub_814B6FC
-sub_814B6FC: @ 814B6FC
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	ldr r5, _0814B70C @ =gUnknown_203F3DC
-	ldr r0, [r5]
-	cmp r0, 0
-	bne _0814B710
-	movs r0, 0x2
-	b _0814B740
-	.align 2, 0
-_0814B70C: .4byte gUnknown_203F3DC
-_0814B710:
-	cmp r4, 0
-	bne _0814B716
-	ldr r4, [r0]
-_0814B716:
-	ldrb r0, [r0, 0xA]
-	bl DestroyTask
-	ldr r0, [r5]
-	bl Free
-	movs r0, 0
-	str r0, [r5]
-	adds r0, r4, 0
-	bl SetMainCallback2
-	ldr r0, _0814B748 @ =CB2_ReturnToField
-	cmp r4, r0
-	bne _0814B73E
-	ldr r0, _0814B74C @ =0x0000012f
-	bl PlayNewMapMusic
-	ldr r0, _0814B750 @ =sub_8056534
-	bl SetMainCallback1
-_0814B73E:
-	movs r0, 0
-_0814B740:
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0814B748: .4byte CB2_ReturnToField
-_0814B74C: .4byte 0x0000012f
-_0814B750: .4byte sub_8056534
-	thumb_func_end sub_814B6FC
-
-	thumb_func_start StartBerryCrush
-StartBerryCrush: @ 814B754
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	sub sp, 0xC
-	adds r4, r0, 0
-	movs r0, 0
-	mov r8, r0
-	ldr r0, _0814B784 @ =gReceivedRemoteLinkPlayers
-	ldrb r0, [r0]
-	cmp r0, 0
-	beq _0814B772
-	ldr r0, _0814B788 @ =gWirelessCommType
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _0814B790
-_0814B772:
-	adds r0, r4, 0
-	bl SetMainCallback2
-	ldr r0, _0814B78C @ =Rfu
-	mov r1, r8
-	strh r1, [r0, 0x10]
-	strh r1, [r0, 0x12]
-	b _0814B7DC
-	.align 2, 0
-_0814B784: .4byte gReceivedRemoteLinkPlayers
-_0814B788: .4byte gWirelessCommType
-_0814B78C: .4byte Rfu
-_0814B790:
-	bl GetLinkPlayerCount
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	bl GetMultiplayerId
-	lsls r0, 24
-	lsrs r7, r0, 24
-	mov r0, r8
-	cmp r0, 0x1
-	bls _0814B7AC
-	cmp r7, r8
-	bcc _0814B7C0
-_0814B7AC:
-	adds r0, r4, 0
-	bl SetMainCallback2
-	ldr r0, _0814B7BC @ =Rfu
-	movs r1, 0
-	strh r1, [r0, 0x10]
-	strh r1, [r0, 0x12]
-	b _0814B7DC
-	.align 2, 0
-_0814B7BC: .4byte Rfu
-_0814B7C0:
-	ldr r6, _0814B7E8 @ =gUnknown_203F3DC
-	ldr r0, _0814B7EC @ =0x000041c0
-	bl AllocZeroed
-	adds r5, r0, 0
-	str r5, [r6]
-	cmp r5, 0
-	bne _0814B7F4
-	adds r0, r4, 0
-	bl SetMainCallback2
-	ldr r0, _0814B7F0 @ =Rfu
-	strh r5, [r0, 0x10]
-	strh r5, [r0, 0x12]
-_0814B7DC:
-	adds r0, 0xEE
-	ldrb r1, [r0]
-	movs r1, 0x1
-	strb r1, [r0]
-	b _0814B84C
-	.align 2, 0
-_0814B7E8: .4byte gUnknown_203F3DC
-_0814B7EC: .4byte 0x000041c0
-_0814B7F0: .4byte Rfu
-_0814B7F4:
-	str r4, [r5]
-	movs r4, 0
-	strb r7, [r5, 0x8]
-	ldr r0, [r6]
-	mov r1, r8
-	strb r1, [r0, 0x9]
-	ldr r0, [r6]
-	bl sub_814BABC
-	ldr r1, [r6]
-	movs r2, 0x1
-	movs r0, 0x1
-	strh r0, [r1, 0x12]
-	strb r2, [r1, 0xE]
-	ldr r1, [r6]
-	movs r0, 0x6
-	strb r0, [r1, 0xF]
-	ldr r0, [r6]
-	adds r0, 0x36
-	movs r2, 0x1
-	negs r2, r2
-	movs r1, 0x10
-	str r1, [sp]
-	str r4, [sp, 0x4]
-	str r4, [sp, 0x8]
-	movs r1, 0x1
-	movs r3, 0
-	bl sub_814D564
-	ldr r2, [r6]
-	adds r2, 0x36
-	movs r0, 0x4
-	movs r1, 0x1
-	bl sub_814BB4C
-	ldr r0, _0814B858 @ =sub_814BA80
-	bl SetMainCallback2
-	ldr r0, _0814B85C @ =sub_814BA98
-	movs r1, 0x8
-	bl CreateTask
-	ldr r1, [r6]
-	strb r0, [r1, 0xA]
-_0814B84C:
-	add sp, 0xC
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814B858: .4byte sub_814BA80
-_0814B85C: .4byte sub_814BA98
-	thumb_func_end StartBerryCrush
-
-	thumb_func_start sub_814B860
-sub_814B860: @ 814B860
-	push {r4,lr}
-	sub sp, 0xC
-	ldr r1, _0814B878 @ =gSpecialVar_ItemId
-	ldrh r0, [r1]
-	subs r0, 0x85
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x2B
-	bls _0814B87C
-	movs r0, 0x85
-	strh r0, [r1]
-	b _0814B884
-	.align 2, 0
-_0814B878: .4byte gSpecialVar_ItemId
-_0814B87C:
-	ldrh r0, [r1]
-	movs r1, 0x1
-	bl RemoveBagItem
-_0814B884:
-	ldr r4, _0814B8E0 @ =gUnknown_203F3DC
-	ldr r2, [r4]
-	ldrb r0, [r2, 0x8]
-	lsls r0, 5
-	adds r0, r2, r0
-	ldr r1, _0814B8E4 @ =gSpecialVar_ItemId
-	ldrh r1, [r1]
-	subs r1, 0x85
-	adds r0, 0xA4
-	movs r3, 0
-	strh r1, [r0]
-	movs r0, 0x1
-	strb r0, [r2, 0xE]
-	ldr r1, [r4]
-	movs r0, 0x9
-	strb r0, [r1, 0xF]
-	ldr r0, [r4]
-	adds r0, 0x36
-	movs r2, 0x1
-	negs r2, r2
-	movs r1, 0x10
-	str r1, [sp]
-	str r3, [sp, 0x4]
-	str r3, [sp, 0x8]
-	movs r1, 0
-	bl sub_814D564
-	ldr r2, [r4]
-	adds r2, 0x36
-	movs r0, 0x4
-	movs r1, 0x1
-	bl sub_814BB4C
-	ldr r0, _0814B8E8 @ =sub_814BA98
-	movs r1, 0x8
-	bl CreateTask
-	ldr r1, [r4]
-	strb r0, [r1, 0xA]
-	ldr r0, _0814B8EC @ =sub_814BA80
-	bl SetMainCallback2
-	add sp, 0xC
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814B8E0: .4byte gUnknown_203F3DC
-_0814B8E4: .4byte gSpecialVar_ItemId
-_0814B8E8: .4byte sub_814BA98
-_0814B8EC: .4byte sub_814BA80
-	thumb_func_end sub_814B860
-
-	thumb_func_start sub_814B8F0
-sub_814B8F0: @ 814B8F0
-	push {lr}
-	ldr r0, _0814B90C @ =gUnknown_203F3DC
-	ldr r0, [r0]
-	ldrb r0, [r0, 0xA]
-	bl DestroyTask
-	ldr r1, _0814B910 @ =sub_814B860
-	movs r0, 0x5
-	movs r2, 0
-	bl InitBerryPouch
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814B90C: .4byte gUnknown_203F3DC
-_0814B910: .4byte sub_814B860
-	thumb_func_end sub_814B8F0
-
-	thumb_func_start sub_814B914
-sub_814B914: @ 814B914
-	push {lr}
-	ldr r0, _0814B920 @ =sub_814BA6C
-	bl SetVBlankCallback
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814B920: .4byte sub_814BA6C
-	thumb_func_end sub_814B914
-
-	thumb_func_start sub_814B924
-sub_814B924: @ 814B924
-	push {lr}
-	movs r0, 0
-	bl SetVBlankCallback
-	pop {r0}
-	bx r0
-	thumb_func_end sub_814B924
-
-	thumb_func_start sub_814B930
-sub_814B930: @ 814B930
-	push {r4,r5,lr}
-	ldr r4, _0814B974 @ =gUnknown_203F3DC
-	ldr r0, [r4]
-	adds r0, 0x6C
-	ldrh r2, [r0]
-	lsls r2, 8
-	movs r1, 0xF0
-	lsls r1, 6
-	adds r0, r2, 0
-	bl sub_80D8B68
-	adds r2, r0, 0
-	ldr r0, [r4]
-	adds r0, 0x72
-	ldrh r3, [r0]
-	lsls r3, 8
-	adds r0, r3, 0
-	adds r1, r2, 0
-	bl sub_80D8B68
-	adds r3, r0, 0
-	ldr r0, _0814B978 @ =0x0000ffff
-	ands r3, r0
-	ldr r2, [r4]
-	strh r3, [r2, 0x16]
-	ldrb r0, [r2, 0x9]
-	cmp r0, 0x3
-	beq _0814B9B4
-	cmp r0, 0x3
-	bgt _0814B97C
-	cmp r0, 0x2
-	beq _0814B986
-	b _0814BA3C
-	.align 2, 0
-_0814B974: .4byte gUnknown_203F3DC
-_0814B978: .4byte 0x0000ffff
-_0814B97C:
-	cmp r0, 0x4
-	beq _0814B9E4
-	cmp r0, 0x5
-	beq _0814BA14
-	b _0814BA3C
-_0814B986:
-	ldr r5, _0814B9B0 @ =gSaveBlock2Ptr
-	ldr r1, [r5]
-	movs r0, 0xAF
-	lsls r0, 4
-	adds r1, r0
-	lsls r0, r3, 16
-	lsrs r0, 16
-	ldrh r1, [r1]
-	cmp r0, r1
-	bls _0814BA3C
-	adds r2, 0x25
-	ldrb r0, [r2]
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-	ldr r0, [r5]
-	ldr r1, [r4]
-	ldrh r1, [r1, 0x16]
-	movs r2, 0xAF
-	lsls r2, 4
-	b _0814BA38
-	.align 2, 0
-_0814B9B0: .4byte gSaveBlock2Ptr
-_0814B9B4:
-	ldr r5, _0814B9DC @ =gSaveBlock2Ptr
-	ldr r1, [r5]
-	ldr r0, _0814B9E0 @ =0x00000af2
-	adds r1, r0
-	lsls r0, r3, 16
-	lsrs r0, 16
-	ldrh r1, [r1]
-	cmp r0, r1
-	bls _0814BA3C
-	adds r2, 0x25
-	ldrb r0, [r2]
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-	ldr r0, [r5]
-	ldr r1, [r4]
-	ldrh r1, [r1, 0x16]
-	ldr r2, _0814B9E0 @ =0x00000af2
-	b _0814BA38
-	.align 2, 0
-_0814B9DC: .4byte gSaveBlock2Ptr
-_0814B9E0: .4byte 0x00000af2
-_0814B9E4:
-	ldr r5, _0814BA0C @ =gSaveBlock2Ptr
-	ldr r1, [r5]
-	ldr r0, _0814BA10 @ =0x00000af4
-	adds r1, r0
-	lsls r0, r3, 16
-	lsrs r0, 16
-	ldrh r1, [r1]
-	cmp r0, r1
-	bls _0814BA3C
-	adds r2, 0x25
-	ldrb r0, [r2]
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-	ldr r0, [r5]
-	ldr r1, [r4]
-	ldrh r1, [r1, 0x16]
-	ldr r2, _0814BA10 @ =0x00000af4
-	b _0814BA38
-	.align 2, 0
-_0814BA0C: .4byte gSaveBlock2Ptr
-_0814BA10: .4byte 0x00000af4
-_0814BA14:
-	ldr r5, _0814BA60 @ =gSaveBlock2Ptr
-	ldr r1, [r5]
-	ldr r0, _0814BA64 @ =0x00000af6
-	adds r1, r0
-	lsls r0, r3, 16
-	lsrs r0, 16
-	ldrh r1, [r1]
-	cmp r0, r1
-	bls _0814BA3C
-	adds r2, 0x25
-	ldrb r0, [r2]
-	movs r1, 0x2
-	orrs r0, r1
-	strb r0, [r2]
-	ldr r0, [r5]
-	ldr r1, [r4]
-	ldrh r1, [r1, 0x16]
-	ldr r2, _0814BA64 @ =0x00000af6
-_0814BA38:
-	adds r0, r2
-	strh r1, [r0]
-_0814BA3C:
-	ldr r4, _0814BA68 @ =gUnknown_203F3DC
-	ldr r1, [r4]
-	ldr r0, [r1, 0x68]
-	str r0, [r1, 0x1C]
-	bl GiveBerryPowder
-	lsls r0, 24
-	cmp r0, 0
-	bne _0814BA5A
-	ldr r0, [r4]
-	adds r0, 0x25
-	ldrb r1, [r0]
-	movs r2, 0x1
-	orrs r1, r2
-	strb r1, [r0]
-_0814BA5A:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814BA60: .4byte gSaveBlock2Ptr
-_0814BA64: .4byte 0x00000af6
-_0814BA68: .4byte gUnknown_203F3DC
-	thumb_func_end sub_814B930
-
-	thumb_func_start sub_814BA6C
-sub_814BA6C: @ 814BA6C
-	push {lr}
-	bl TransferPlttBuffer
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	pop {r0}
-	bx r0
-	thumb_func_end sub_814BA6C
-
-	thumb_func_start sub_814BA80
-sub_814BA80: @ 814BA80
-	push {lr}
-	bl RunTasks
-	bl RunTextPrinters
-	bl AnimateSprites
-	bl BuildOamBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_814BA80
-
-	thumb_func_start sub_814BA98
-sub_814BA98: @ 814BA98
-	push {r4,lr}
-	ldr r4, _0814BAB8 @ =gUnknown_203F3DC
-	ldr r0, [r4]
-	ldr r2, [r0, 0x4]
-	cmp r2, 0
-	beq _0814BAAC
-	adds r1, r0, 0
-	adds r1, 0x36
-	bl _call_via_r2
-_0814BAAC:
-	ldr r0, [r4]
-	bl sub_814D9CC
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0814BAB8: .4byte gUnknown_203F3DC
-	thumb_func_end sub_814BA98
-
-	thumb_func_start sub_814BABC
-sub_814BABC: @ 814BABC
-	push {r4-r6,lr}
-	adds r6, r0, 0
-	movs r5, 0
-	b _0814BAE8
-_0814BAC4:
-	lsls r4, r5, 5
-	adds r0, r4, 0
-	adds r0, 0x98
-	adds r0, r6, r0
-	lsls r1, r5, 3
-	subs r1, r5
-	lsls r1, 2
-	ldr r2, _0814BB2C @ =gLinkPlayers + 8
-	adds r1, r2
-	bl StringCopy
-	adds r4, r6, r4
-	adds r4, 0x9F
-	movs r0, 0xFF
-	strb r0, [r4]
-	adds r0, r5, 0x1
-	lsls r0, 24
-	lsrs r5, r0, 24
-_0814BAE8:
-	ldrb r0, [r6, 0x9]
-	cmp r5, r0
-	bcc _0814BAC4
-	cmp r5, 0x4
-	bhi _0814BB14
-_0814BAF2:
-	lsls r4, r5, 5
-	adds r0, r4, 0
-	adds r0, 0x98
-	adds r0, r6, r0
-	movs r1, 0x1
-	movs r2, 0x7
-	bl memset
-	adds r4, r6, r4
-	adds r4, 0x9F
-	movs r0, 0xFF
-	strb r0, [r4]
-	adds r0, r5, 0x1
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r5, 0x4
-	bls _0814BAF2
-_0814BB14:
-	ldr r0, _0814BB30 @ =gSaveBlock2Ptr
-	ldr r0, [r0]
-	ldrb r0, [r0, 0x14]
-	lsls r0, 29
-	lsrs r0, 29
-	cmp r0, 0x1
-	beq _0814BB3E
-	cmp r0, 0x1
-	bgt _0814BB34
-	cmp r0, 0
-	beq _0814BB3A
-	b _0814BB46
-	.align 2, 0
-_0814BB2C: .4byte gLinkPlayers + 8
-_0814BB30: .4byte gSaveBlock2Ptr
-_0814BB34:
-	cmp r0, 0x2
-	beq _0814BB42
-	b _0814BB46
-_0814BB3A:
-	movs r0, 0x8
-	b _0814BB44
-_0814BB3E:
-	movs r0, 0x4
-	b _0814BB44
-_0814BB42:
-	movs r0, 0x1
-_0814BB44:
-	strb r0, [r6, 0xB]
-_0814BB46:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_814BABC
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/overworld.s b/asm/overworld.s
index 7fd5470dd..6b7744e52 100644
--- a/asm/overworld.s
+++ b/asm/overworld.s
@@ -3347,8 +3347,8 @@ _08056522:
 _08056530: .4byte gUnknown_3005E90
 	thumb_func_end sub_80564C8
 
-	thumb_func_start sub_8056534
-sub_8056534: @ 8056534
+	thumb_func_start CB1_Overworld
+CB1_Overworld: @ 8056534
 	push {r4,lr}
 	ldr r4, _0805655C @ =gMain
 	ldr r1, [r4, 0x4]
@@ -3379,7 +3379,7 @@ _08056570:
 	pop {r4}
 	pop {r0}
 	bx r0
-	thumb_func_end sub_8056534
+	thumb_func_end CB1_Overworld
 
 	thumb_func_start sub_8056578
 sub_8056578: @ 8056578
@@ -3507,7 +3507,7 @@ CB2_NewGame: @ 8056644
 	ldr r0, _08056698 @ =gMain + 0x438
 	bl do_load_map_stuff_loop
 	bl SetFieldVBlankCallback
-	ldr r0, _0805669C @ =sub_8056534
+	ldr r0, _0805669C @ =CB1_Overworld
 	bl SetMainCallback1
 	ldr r0, _080566A0 @ =sub_80565B4
 	bl SetMainCallback2
@@ -3518,7 +3518,7 @@ _0805668C: .4byte gFieldCallback
 _08056690: .4byte sub_807DF7C
 _08056694: .4byte gFieldCallback2
 _08056698: .4byte gMain + 0x438
-_0805669C: .4byte sub_8056534
+_0805669C: .4byte CB1_Overworld
 _080566A0: .4byte sub_80565B4
 	thumb_func_end CB2_NewGame
 
@@ -3555,7 +3555,7 @@ CB2_WhiteOut: @ 80566A4
 	bl do_load_map_stuff_loop
 	bl sub_8112364
 	bl SetFieldVBlankCallback
-	ldr r0, _08056714 @ =sub_8056534
+	ldr r0, _08056714 @ =CB1_Overworld
 	bl SetMainCallback1
 	ldr r0, _08056718 @ =sub_80565B4
 	bl SetMainCallback2
@@ -3567,7 +3567,7 @@ _08056702:
 _08056708: .4byte gMain
 _0805670C: .4byte gFieldCallback
 _08056710: .4byte sub_807F5F0
-_08056714: .4byte sub_8056534
+_08056714: .4byte CB1_Overworld
 _08056718: .4byte sub_80565B4
 	thumb_func_end CB2_WhiteOut
 
@@ -3608,7 +3608,7 @@ sub_805674C: @ 805674C
 _08056768: .4byte gMain + 0x438
 _0805676C:
 	bl SetFieldVBlankCallback
-	ldr r0, _08056780 @ =sub_8056534
+	ldr r0, _08056780 @ =CB1_Overworld
 	bl SetMainCallback1
 	ldr r0, _08056784 @ =sub_80565B4
 	bl SetMainCallback2
@@ -3616,7 +3616,7 @@ _0805677C:
 	pop {r0}
 	bx r0
 	.align 2, 0
-_08056780: .4byte sub_8056534
+_08056780: .4byte CB1_Overworld
 _08056784: .4byte sub_80565B4
 	thumb_func_end sub_805674C
 
@@ -3870,7 +3870,7 @@ _0805699C:
 	ldr r0, _080569B0 @ =gFieldCallback
 	ldr r1, _080569B4 @ =sub_8056918
 	str r1, [r0]
-	ldr r0, _080569B8 @ =sub_8056534
+	ldr r0, _080569B8 @ =CB1_Overworld
 	bl SetMainCallback1
 	bl CB2_ReturnToField
 _080569AC:
@@ -3879,7 +3879,7 @@ _080569AC:
 	.align 2, 0
 _080569B0: .4byte gFieldCallback
 _080569B4: .4byte sub_8056918
-_080569B8: .4byte sub_8056534
+_080569B8: .4byte CB1_Overworld
 	thumb_func_end CB2_ContinueSavedGame
 
 	thumb_func_start FieldClearVBlankHBlankCallbacks
@@ -4963,7 +4963,7 @@ sub_80572D8: @ 80572D8
 	ldr r0, _080572F4 @ =gMain + 0x438
 	bl sub_8057300
 	bl SetFieldVBlankCallback
-	ldr r0, _080572F8 @ =sub_8056534
+	ldr r0, _080572F8 @ =CB1_Overworld
 	bl SetMainCallback1
 	ldr r0, _080572FC @ =sub_80565B4
 	bl SetMainCallback2
@@ -4971,7 +4971,7 @@ sub_80572D8: @ 80572D8
 	bx r0
 	.align 2, 0
 _080572F4: .4byte gMain + 0x438
-_080572F8: .4byte sub_8056534
+_080572F8: .4byte CB1_Overworld
 _080572FC: .4byte sub_80565B4
 	thumb_func_end sub_80572D8
 
@@ -5148,14 +5148,14 @@ _08057484: .4byte gUnknown_2036E28
 _08057488: .4byte gUnknown_2031DE0
 _0805748C: .4byte CB2_LoadMap
 _08057490:
-	ldr r0, _080574A0 @ =sub_8056534
+	ldr r0, _080574A0 @ =CB1_Overworld
 	bl SetMainCallback1
 	bl CB2_ReturnToField
 _0805749A:
 	pop {r0}
 	bx r0
 	.align 2, 0
-_080574A0: .4byte sub_8056534
+_080574A0: .4byte CB1_Overworld
 	thumb_func_end sub_8057430
 
 	thumb_func_start Overworld_CreditsMainCB
diff --git a/include/berry_crush.h b/include/berry_crush.h
index e8e9c216f..864d9b9d3 100644
--- a/include/berry_crush.h
+++ b/include/berry_crush.h
@@ -1,6 +1,165 @@
 #ifndef GUARD_BERRY_CRUSH_H
 #define GUARD_BERRY_CRUSH_H
 
+struct BerryCrushGame_Player
+{
+    u16 unk0;
+    u16 unk2;
+    union
+    {
+        u8 as_2d_bytes[2][8];
+        u16 as_hwords[8];
+    } unk4;
+    u8 unk14[12];
+};
+
+struct __attribute__((packed, aligned(2))) BerryCrushGame_4E
+{
+    u16 unk0;
+    u16 filler2;
+    u8 unk4_0:1;
+    u8 unk4_1:1;
+    s8 unk5;
+    u16 unk6;
+    u16 unk8;
+    u16 unkA;
+    u16 unkC;
+};
+
+struct __attribute__((packed)) BerryCrushGame_40
+{
+    u8 unk0[2];
+    u16 unk2[6];
+    struct BerryCrushGame_4E unkE;
+};
+
+struct BerryCrushGame_5C
+{
+    u16 unk00;
+    u8 unk02_0:1;
+    u8 unk02_1:1;
+    u8 unk02_2:1;
+    u8 unk02_3:5;
+    u8 unk03;
+    u16 unk04;
+    u16 unk06;
+    u16 unk08;
+    u16 unk0A;
+};
+
+union BerryCrushGame_68
+{
+    struct BerryCrushGame_68_x
+    {
+        struct BerryCrushGame_68_x_SubStruct
+        {
+            s32 unk00;
+            u16 unk04;
+            s16 unk06;
+            u16 unk08;
+            u16 unk0A;
+            u16 unk0C[2][5];
+            u8 filler20[16];
+        } unk00;
+        u8 unk30[12];
+        struct BerryCrushGame_Player others[4];
+        u8 fillerBC[20];
+    } as_four_players;
+    struct BerryCrushGame_68_y
+    {
+        u8 filler00[28];
+        struct BerryCrushGame_Player unk1C[5];
+        u8 fillerBC[20];
+    } as_five_players;
+};
+
+struct BerryCrushGame_138_C
+{
+    u8 unk0;
+    u8 unk1;
+    u8 unk2;
+    s16 unk4;
+    s16 unk6;
+    s16 unk8;
+    s16 unkA;
+};
+
+struct BerryCrushGame_138
+{
+    u8 unk0;
+    u8 unk1;
+    u8 unk2;
+    u8 unk3;
+    s16 unk4;
+    s16 unk6;
+    s16 unk8;
+    const struct BerryCrushGame_138_C *unkC[5];
+    struct Sprite *unk20;
+    struct Sprite *unk24[5];
+    struct Sprite *unk38[5];
+    struct Sprite *unk4C[11];
+    struct Sprite *unk78[2];
+    u8 unk80;
+    u8 filler81;
+    u8 unk82;
+    u8 unk83[5];
+};
+
+struct BerryCrushGame
+{
+    MainCallback unk0;
+    u32 (* unk4)(struct BerryCrushGame *, u8 *);
+    u8 unk8;
+    u8 unk9;
+    u8 unkA;
+    u8 unkB;
+    u8 unkC;
+    u8 unkD;
+    u8 unkE;
+    u8 unkF;
+    u16 unk10;
+    u16 unk12;
+    u16 unk14;
+    u16 unk16;
+    s16 unk18;
+    s16 unk1A;
+    int unk1C;
+    s32 unk20;
+    u8 unk24;
+    u8 unk25_0:1;
+    u8 unk25_1:1;
+    u8 unk25_2:1;
+    u8 unk25_3:1;
+    u8 unk25_4:1;
+    u8 unk25_5:3;
+    u16 unk26;
+    u16 unk28;
+    s16 unk2A;
+    s16 unk2C;
+    s16 unk2E;
+    s16 unk30;
+    s16 unk32;
+    s16 unk34;
+    u8 unk36[0xA];
+    struct BerryCrushGame_40 unk40;
+    struct BerryCrushGame_5C unk5C;
+    union BerryCrushGame_68 unk68;
+    struct BerryCrushGame_138 unk138;
+    u8 unk1C0[0x1000];
+    u8 unk11C0[0x1000];
+    u8 unk21C0[0x1000];
+    u8 unk31C0[0x1000];
+};
+
 void StartBerryCrush(MainCallback callback);
+u32 sub_814B6FC(MainCallback callback);
+void sub_814B8F0(void);
+void sub_814B914(void);
+void sub_814B924(void);
+void sub_814B930(void);
+void sub_814BABC(struct BerryCrushGame *arg0);
+void sub_814BB4C(u16, u8, u8 *);
+void sub_814D564(u8 *, u32, s32, u32, u32, u32, u32);
+void sub_814D9CC(struct BerryCrushGame *arg0);
 
 #endif //GUARD_BERRY_CRUSH_H
diff --git a/include/math_util.h b/include/math_util.h
index 473be5d45..7a81ee7e3 100644
--- a/include/math_util.h
+++ b/include/math_util.h
@@ -3,5 +3,6 @@
 
 s16 sub_80D8B90(s16 y);
 s16 sub_80D8AA0(s16 x, s16 y);
+s32 sub_80D8B68(s32 x, s32 y);
 
 #endif //GUARD_MATH_UTIL_H
diff --git a/include/overworld.h b/include/overworld.h
index 1775a6896..a67c7cd88 100644
--- a/include/overworld.h
+++ b/include/overworld.h
@@ -189,6 +189,8 @@ void sub_8057F34(void);
 u32 sub_8057EC0(void);
 void sub_8057F70(void);
 void sub_8057F48(void);
+void SetMainCallback1(MainCallback cb);
+void CB1_Overworld(void);
 
 extern u16 gHeldKeyCodeToSend;
 
diff --git a/ld_script.txt b/ld_script.txt
index 65666ddc0..1f819d6c7 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -279,7 +279,7 @@ SECTIONS {
         src/pokemon_jump_4.o(.text);
         src/pokemon_jump_5.o(.text);
         src/pokemon_jump_6.o(.text);
-        asm/berry_crush.o(.text);
+        src/berry_crush.o(.text);
         asm/berry_crush_2.o(.text);
         asm/berry_crush_3.o(.text);
         src/wireless_communication_status_screen.o(.text);
diff --git a/src/berry_crush.c b/src/berry_crush.c
new file mode 100644
index 000000000..b1a484a24
--- /dev/null
+++ b/src/berry_crush.c
@@ -0,0 +1,235 @@
+#include "global.h"
+#include "gflib.h"
+#include "berry_crush.h"
+#include "berry_pouch.h"
+#include "berry_powder.h"
+#include "item.h"
+#include "item_menu.h"
+#include "link.h"
+#include "link_rfu.h"
+#include "math_util.h"
+#include "overworld.h"
+#include "task.h"
+#include "constants/songs.h"
+#include "constants/items.h"
+
+static EWRAM_DATA struct BerryCrushGame *gUnknown_203F3DC = NULL;
+
+struct BerryCrushGame *sub_814B6F0(void);
+static void sub_814B860(void);
+static void sub_814BA6C(void);
+static void sub_814BA80(void);
+static void sub_814BA98(u8 taskId);
+
+struct BerryCrushGame *sub_814B6F0(void)
+{
+    return gUnknown_203F3DC;
+}
+
+u32 sub_814B6FC(MainCallback callback)
+{
+    if (!gUnknown_203F3DC)
+        return 2;
+
+    if (!callback)
+        callback = gUnknown_203F3DC->unk0;
+
+    DestroyTask(gUnknown_203F3DC->unkA);
+    FREE_AND_SET_NULL(gUnknown_203F3DC);
+    SetMainCallback2(callback);
+    if (callback == CB2_ReturnToField)
+    {
+        PlayNewMapMusic(MUS_POKECEN);
+        SetMainCallback1(CB1_Overworld);
+    }
+
+    return 0;
+}
+
+void StartBerryCrush(MainCallback callback)
+{
+    u8 playerCount = 0;
+    u8 multiplayerId;
+
+    if (!gReceivedRemoteLinkPlayers || gWirelessCommType == 0)
+    {
+        SetMainCallback2(callback);
+        Rfu.linkman_param[0] = 0;
+        Rfu.linkman_param[1] = 0;
+        Rfu.errorState = 1;
+        return;
+    }
+
+    playerCount = GetLinkPlayerCount();
+    multiplayerId = GetMultiplayerId();
+    if (playerCount < 2 || multiplayerId >= playerCount)
+    {
+        SetMainCallback2(callback);
+        Rfu.linkman_param[0] = 0;
+        Rfu.linkman_param[1] = 0;
+        Rfu.errorState = 1;
+        return;
+    }
+
+    gUnknown_203F3DC = AllocZeroed(sizeof(*gUnknown_203F3DC));
+    if (!gUnknown_203F3DC)
+    {
+        SetMainCallback2(callback);
+        Rfu.linkman_param[0] = 0;
+        Rfu.linkman_param[1] = 0;
+        Rfu.errorState = 1;
+        return;
+    }
+
+    gUnknown_203F3DC->unk0 = callback;
+    gUnknown_203F3DC->unk8 = multiplayerId;
+    gUnknown_203F3DC->unk9 = playerCount;
+    sub_814BABC(gUnknown_203F3DC);
+    gUnknown_203F3DC->unk12 = 1;
+    gUnknown_203F3DC->unkE = 1;
+    gUnknown_203F3DC->unkF = 6;
+    sub_814D564(gUnknown_203F3DC->unk36, 1, -1, 0, 16, 0, 0);
+    sub_814BB4C(4, 1, gUnknown_203F3DC->unk36);
+    SetMainCallback2(sub_814BA80);
+    gUnknown_203F3DC->unkA = CreateTask(sub_814BA98, 8);
+}
+
+static void sub_814B860(void)
+{
+    if (gSpecialVar_ItemId < FIRST_BERRY_INDEX || gSpecialVar_ItemId > LAST_BERRY_INDEX + 1)
+        gSpecialVar_ItemId = ITEM_CHERI_BERRY;
+    else
+        RemoveBagItem(gSpecialVar_ItemId, 1);
+
+    gUnknown_203F3DC->unk68.as_four_players.others[gUnknown_203F3DC->unk8].unk0 = gSpecialVar_ItemId - FIRST_BERRY_INDEX;
+    gUnknown_203F3DC->unkE = 1;
+    gUnknown_203F3DC->unkF = 9;
+    sub_814D564(gUnknown_203F3DC->unk36, 0, -1, 0, 16, 0, 0);
+    sub_814BB4C(4, 1, gUnknown_203F3DC->unk36);
+    gUnknown_203F3DC->unkA = CreateTask(sub_814BA98, 8);
+    SetMainCallback2(sub_814BA80);
+}
+
+void sub_814B8F0(void)
+{
+    DestroyTask(gUnknown_203F3DC->unkA);
+    InitBerryPouch(BERRYPOUCH_FROMBERRYCRUSH, sub_814B860, FALSE);
+}
+
+void sub_814B914(void)
+{
+    SetVBlankCallback(sub_814BA6C);
+}
+
+void sub_814B924(void)
+{
+    SetVBlankCallback(NULL);
+}
+
+void sub_814B930(void)
+{
+    u32 var0, var1;
+
+    var0 = gUnknown_203F3DC->unk68.as_four_players.unk00.unk04;
+    var0 <<= 8;
+    var0 = sub_80D8B68(var0, 60 << 8);
+    var1 = gUnknown_203F3DC->unk68.as_four_players.unk00.unk0A;
+    var1 <<= 8;
+    var1 = sub_80D8B68(var1, var0) & 0xFFFF;
+    gUnknown_203F3DC->unk16 = var1;
+    switch (gUnknown_203F3DC->unk9)
+    {
+    case 2:
+        if (gUnknown_203F3DC->unk16 > gSaveBlock2Ptr->berryCrush.berryCrushResults[0])
+        {
+            gUnknown_203F3DC->unk25_1 = 1;
+            gSaveBlock2Ptr->berryCrush.berryCrushResults[0] = gUnknown_203F3DC->unk16;
+        }
+        break;
+    case 3:
+        if (gUnknown_203F3DC->unk16 > gSaveBlock2Ptr->berryCrush.berryCrushResults[1])
+        {
+            gUnknown_203F3DC->unk25_1 = 1;
+            gSaveBlock2Ptr->berryCrush.berryCrushResults[1] = gUnknown_203F3DC->unk16;
+        }
+        break;
+    case 4:
+        if (gUnknown_203F3DC->unk16 > gSaveBlock2Ptr->berryCrush.berryCrushResults[2])
+        {
+            gUnknown_203F3DC->unk25_1 = 1;
+            gSaveBlock2Ptr->berryCrush.berryCrushResults[2] = gUnknown_203F3DC->unk16;
+        }
+        break;
+    case 5:
+        if (gUnknown_203F3DC->unk16 > gSaveBlock2Ptr->berryCrush.berryCrushResults[3])
+        {
+            gUnknown_203F3DC->unk25_1 = 1;
+            gSaveBlock2Ptr->berryCrush.berryCrushResults[3] = gUnknown_203F3DC->unk16;
+        }
+        break;
+    }
+
+    gUnknown_203F3DC->unk1C = gUnknown_203F3DC->unk68.as_four_players.unk00.unk00;
+    if (GiveBerryPowder(gUnknown_203F3DC->unk1C))
+        return;
+
+    gUnknown_203F3DC->unk25_0 = 1;
+}
+
+static void sub_814BA6C(void)
+{
+    TransferPlttBuffer();
+    LoadOam();
+    ProcessSpriteCopyRequests();
+}
+
+static void sub_814BA80(void)
+{
+    RunTasks();
+    RunTextPrinters();
+    AnimateSprites();
+    BuildOamBuffer();
+}
+
+static void sub_814BA98(u8 taskId)
+{
+    if (gUnknown_203F3DC->unk4)
+        gUnknown_203F3DC->unk4(gUnknown_203F3DC, gUnknown_203F3DC->unk36);
+
+    sub_814D9CC(gUnknown_203F3DC);
+}
+
+#define PLAYER_UNK14(game, i)                        \
+    ((u8 *)(game)                                    \
+    + offsetof(struct BerryCrushGame, unk68)         \
+    + offsetof(struct BerryCrushGame_68_x, unk30)    \
+    + sizeof(struct BerryCrushGame_Player) * (i))
+
+void sub_814BABC(struct BerryCrushGame *arg0)
+{
+    u8 i;
+
+    for (i = 0; i < arg0->unk9; i++)
+    {
+        StringCopy(PLAYER_UNK14(arg0, i), gLinkPlayers[i].name);
+        arg0->unk68.as_five_players.unk1C[i].unk14[PLAYER_NAME_LENGTH] = EOS;
+    }
+    for (; i < 5; i++)
+    {
+        memset(PLAYER_UNK14(arg0, i), 1, PLAYER_NAME_LENGTH);
+        arg0->unk68.as_five_players.unk1C[i].unk14[PLAYER_NAME_LENGTH] = EOS;
+    }
+
+    switch (gSaveBlock2Ptr->optionsTextSpeed)
+    {
+    case OPTIONS_TEXT_SPEED_SLOW:
+        arg0->unkB = 8;
+        break;
+    case OPTIONS_TEXT_SPEED_MID:
+        arg0->unkB = 4;
+        break;
+    case OPTIONS_TEXT_SPEED_FAST:
+        arg0->unkB = 1;
+        break;
+    }
+}
diff --git a/sym_ewram.txt b/sym_ewram.txt
index af88aba94..d4a46e69d 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -447,10 +447,10 @@ gUnknown_203B170: @ 203B170
 	.include "src/pokemon_jump_2.o"
 	.align 2
 	.include "src/pokemon_jump_4.o"
+	.align 2
+	.include "src/berry_crush.o"
 
-gUnknown_203F3DC: @ 203F3DC
-	.space 0x4
-
+	.align 2
 gUnknown_203F3E0: @ 203F3E0
 	.space 0x4