trade through sub_8053E1C; dynamic sys flags start idx

5 files changed, 280 insertions, 873 deletions

diff --git a/asm/trade.s b/asm/trade.s
index 0fd2e5c57..a90af0130 100644
--- a/asm/trade.s
+++ b/asm/trade.s
@@ -5,867 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8053788
-sub_8053788: @ 8053788
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	ldr r0, _080537A4 @ =gMain
-	movs r2, 0x87
-	lsls r2, 3
-	adds r1, r0, r2
-	ldrb r0, [r1]
-	cmp r0, 0
-	beq _080537A8
-	cmp r0, 0x4
-	beq _080537B8
-	b _08053814
-	.align 2, 0
-_080537A4: .4byte gMain
-_080537A8:
-	movs r0, 0x4
-	strb r0, [r1]
-	ldr r1, _080537B4 @ =gSoftResetDisabled
-	movs r0, 0x1
-	b _08053812
-	.align 2, 0
-_080537B4: .4byte gSoftResetDisabled
-_080537B8:
-	ldr r0, _080537F4 @ =gCB2_AfterEvolution
-	ldr r1, _080537F8 @ =sub_8053E8C
-	mov r8, r1
-	str r1, [r0]
-	ldr r7, _080537FC @ =gSelectedTradeMonPositions
-	ldrb r0, [r7]
-	movs r6, 0x64
-	muls r0, r6
-	ldr r5, _08053800 @ =gPlayerParty
-	adds r0, r5
-	movs r1, 0x1
-	movs r2, 0
-	bl GetEvolutionTargetSpecies
-	lsls r0, 16
-	lsrs r4, r0, 16
-	cmp r4, 0
-	beq _08053808
-	ldrb r3, [r7]
-	adds r0, r3, 0
-	muls r0, r6
-	adds r0, r5
-	ldr r1, _08053804 @ =sTradeData
-	ldr r1, [r1]
-	adds r1, 0x8F
-	ldrb r2, [r1]
-	adds r1, r4, 0
-	bl TradeEvolutionScene
-	b _0805380E
-	.align 2, 0
-_080537F4: .4byte gCB2_AfterEvolution
-_080537F8: .4byte sub_8053E8C
-_080537FC: .4byte gSelectedTradeMonPositions
-_08053800: .4byte gPlayerParty
-_08053804: .4byte sTradeData
-_08053808:
-	mov r0, r8
-	bl SetMainCallback2
-_0805380E:
-	ldr r1, _08053838 @ =gSelectedTradeMonPositions
-	movs r0, 0xFF
-_08053812:
-	strb r0, [r1]
-_08053814:
-	bl HasLinkErrorOccurred
-	lsls r0, 24
-	cmp r0, 0
-	bne _08053822
-	bl RunTasks
-_08053822:
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053838: .4byte gSelectedTradeMonPositions
-	thumb_func_end sub_8053788
-
-	thumb_func_start sub_805383C
-sub_805383C: @ 805383C
-	push {r4-r6,lr}
-	bl sub_804FFC4
-	bl GetBlockReceivedStatus
-	lsls r0, 24
-	lsrs r5, r0, 24
-	movs r6, 0x1
-	adds r0, r5, 0
-	ands r0, r6
-	cmp r0, 0
-	beq _0805387A
-	ldr r4, _080538A8 @ =gBlockRecvBuffer
-	ldrh r1, [r4]
-	ldr r0, _080538AC @ =0x0000dcba
-	cmp r1, r0
-	bne _08053864
-	ldr r0, _080538B0 @ =sub_8053788
-	bl SetMainCallback2
-_08053864:
-	ldrh r1, [r4]
-	ldr r0, _080538B4 @ =0x0000abcd
-	cmp r1, r0
-	bne _08053874
-	ldr r0, _080538B8 @ =sTradeData
-	ldr r0, [r0]
-	adds r0, 0x72
-	strb r6, [r0]
-_08053874:
-	movs r0, 0
-	bl ResetBlockReceivedFlag
-_0805387A:
-	movs r0, 0x2
-	ands r0, r5
-	cmp r0, 0
-	beq _080538A2
-	ldr r0, _080538A8 @ =gBlockRecvBuffer
-	movs r1, 0x80
-	lsls r1, 1
-	adds r0, r1
-	ldrh r1, [r0]
-	ldr r0, _080538B4 @ =0x0000abcd
-	cmp r1, r0
-	bne _0805389C
-	ldr r0, _080538B8 @ =sTradeData
-	ldr r0, [r0]
-	adds r0, 0x73
-	movs r1, 0x1
-	strb r1, [r0]
-_0805389C:
-	movs r0, 0x1
-	bl ResetBlockReceivedFlag
-_080538A2:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080538A8: .4byte gBlockRecvBuffer
-_080538AC: .4byte 0x0000dcba
-_080538B0: .4byte sub_8053788
-_080538B4: .4byte 0x0000abcd
-_080538B8: .4byte sTradeData
-	thumb_func_end sub_805383C
-
-	thumb_func_start SpriteCB_TradePokeball_Default
-SpriteCB_TradePokeball_Default: @ 80538BC
-	push {r4,r5,lr}
-	adds r5, r0, 0
-	movs r1, 0x2E
-	ldrsh r0, [r5, r1]
-	movs r1, 0xA
-	bl __divsi3
-	ldrh r4, [r5, 0x22]
-	adds r4, r0
-	strh r4, [r5, 0x22]
-	ldrh r0, [r5, 0x30]
-	ldrh r2, [r5, 0x38]
-	adds r0, r2
-	strh r0, [r5, 0x38]
-	movs r1, 0x38
-	ldrsh r0, [r5, r1]
-	movs r1, 0xA
-	bl __divsi3
-	strh r0, [r5, 0x20]
-	lsls r4, 16
-	asrs r4, 16
-	cmp r4, 0x4C
-	ble _0805390A
-	movs r0, 0x4C
-	strh r0, [r5, 0x22]
-	movs r2, 0x2E
-	ldrsh r1, [r5, r2]
-	movs r2, 0x32
-	ldrsh r0, [r5, r2]
-	muls r0, r1
-	negs r0, r0
-	movs r1, 0x64
-	bl __divsi3
-	strh r0, [r5, 0x2E]
-	ldrh r0, [r5, 0x34]
-	adds r0, 0x1
-	strh r0, [r5, 0x34]
-_0805390A:
-	movs r1, 0x20
-	ldrsh r0, [r5, r1]
-	cmp r0, 0x78
-	bne _08053916
-	movs r0, 0
-	strh r0, [r5, 0x30]
-_08053916:
-	ldrh r0, [r5, 0x36]
-	ldrh r2, [r5, 0x2E]
-	adds r0, r2
-	strh r0, [r5, 0x2E]
-	movs r1, 0x34
-	ldrsh r0, [r5, r1]
-	cmp r0, 0x4
-	bne _0805392E
-	movs r0, 0x1
-	strh r0, [r5, 0x3C]
-	ldr r0, _08053934 @ =SpriteCallbackDummy
-	str r0, [r5, 0x1C]
-_0805392E:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053934: .4byte SpriteCallbackDummy
-	thumb_func_end SpriteCB_TradePokeball_Default
-
-	thumb_func_start SpriteCB_TradePokeball_Outbound
-SpriteCB_TradePokeball_Outbound: @ 8053938
-	push {r4,lr}
-	sub sp, 0x4
-	adds r4, r0, 0
-	ldr r1, _080539A0 @ =gUnknown_826D1E4
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	adds r0, r1
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	ldrh r1, [r4, 0x26]
-	adds r0, r1
-	strh r0, [r4, 0x26]
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	cmp r0, 0x16
-	bne _08053960
-	movs r0, 0x31
-	bl PlaySE
-_08053960:
-	ldrh r0, [r4, 0x2E]
-	adds r0, 0x1
-	strh r0, [r4, 0x2E]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x2C
-	bne _08053996
-	movs r0, 0x85
-	bl PlaySE
-	ldr r0, _080539A4 @ =SpriteCB_TradePokeball_Outbound2
-	str r0, [r4, 0x1C]
-	movs r0, 0
-	strh r0, [r4, 0x2E]
-	ldrb r1, [r4, 0x5]
-	lsrs r1, 4
-	adds r1, 0x10
-	movs r0, 0x1
-	lsls r0, r1
-	movs r1, 0x1
-	negs r1, r1
-	ldr r2, _080539A8 @ =0x0000ffff
-	str r2, [sp]
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-_08053996:
-	add sp, 0x4
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080539A0: .4byte gUnknown_826D1E4
-_080539A4: .4byte SpriteCB_TradePokeball_Outbound2
-_080539A8: .4byte 0x0000ffff
-	thumb_func_end SpriteCB_TradePokeball_Outbound
-
-	thumb_func_start SpriteCB_TradePokeball_Outbound2
-SpriteCB_TradePokeball_Outbound2: @ 80539AC
-	push {r4,lr}
-	adds r4, r0, 0
-	movs r1, 0x30
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x14
-	bne _080539C0
-	adds r0, r4, 0
-	movs r1, 0x1
-	bl StartSpriteAffineAnim
-_080539C0:
-	ldrh r0, [r4, 0x30]
-	adds r0, 0x1
-	strh r0, [r4, 0x30]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x14
-	ble _080539FE
-	ldr r1, _08053A04 @ =gUnknown_826D1E4
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	adds r0, r1
-	movs r1, 0
-	ldrsb r1, [r0, r1]
-	ldrh r0, [r4, 0x26]
-	subs r0, r1
-	strh r0, [r4, 0x26]
-	ldrh r0, [r4, 0x2E]
-	adds r0, 0x1
-	strh r0, [r4, 0x2E]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x17
-	bne _080539FE
-	adds r0, r4, 0
-	bl DestroySprite
-	ldr r0, _08053A08 @ =sTradeData
-	ldr r0, [r0]
-	adds r0, 0x94
-	movs r1, 0xE
-	strh r1, [r0]
-_080539FE:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053A04: .4byte gUnknown_826D1E4
-_08053A08: .4byte sTradeData
-	thumb_func_end SpriteCB_TradePokeball_Outbound2
-
-	thumb_func_start SpriteCB_TradePokeball_Inbound
-SpriteCB_TradePokeball_Inbound: @ 8053A0C
-	push {r4,lr}
-	adds r4, r0, 0
-	ldrh r2, [r4, 0x32]
-	movs r1, 0x32
-	ldrsh r0, [r4, r1]
-	cmp r0, 0
-	bne _08053A3C
-	ldrh r0, [r4, 0x22]
-	adds r0, 0x4
-	strh r0, [r4, 0x22]
-	lsls r0, 16
-	asrs r0, 16
-	movs r3, 0x34
-	ldrsh r1, [r4, r3]
-	cmp r0, r1
-	ble _08053A8C
-	adds r0, r2, 0x1
-	strh r0, [r4, 0x32]
-	movs r0, 0x16
-	strh r0, [r4, 0x2E]
-	movs r0, 0x31
-	bl PlaySE
-	b _08053A8C
-_08053A3C:
-	movs r1, 0x2E
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x42
-	bne _08053A4A
-	movs r0, 0x32
-	bl PlaySE
-_08053A4A:
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	cmp r0, 0x5C
-	bne _08053A58
-	movs r0, 0x33
-	bl PlaySE
-_08053A58:
-	movs r3, 0x2E
-	ldrsh r0, [r4, r3]
-	cmp r0, 0x6B
-	bne _08053A66
-	movs r0, 0x34
-	bl PlaySE
-_08053A66:
-	ldr r1, _08053A94 @ =gUnknown_826D1E4
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	adds r0, r1
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	ldrh r3, [r4, 0x26]
-	adds r0, r3
-	strh r0, [r4, 0x26]
-	ldrh r0, [r4, 0x2E]
-	adds r0, 0x1
-	strh r0, [r4, 0x2E]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x6C
-	bne _08053A8C
-	ldr r0, _08053A98 @ =SpriteCallbackDummy
-	str r0, [r4, 0x1C]
-_08053A8C:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053A94: .4byte gUnknown_826D1E4
-_08053A98: .4byte SpriteCallbackDummy
-	thumb_func_end SpriteCB_TradePokeball_Inbound
-
-	thumb_func_start GetInGameTradeSpeciesInfo
-GetInGameTradeSpeciesInfo: @ 8053A9C
-	push {r4-r6,lr}
-	ldr r0, _08053AD0 @ =gSpecialVar_0x8004
-	ldrh r0, [r0]
-	lsls r4, r0, 4
-	subs r4, r0
-	lsls r4, 2
-	ldr r0, _08053AD4 @ =gIngameTrades
-	adds r4, r0
-	ldr r0, _08053AD8 @ =gStringVar1
-	ldrh r1, [r4, 0x38]
-	movs r6, 0xB
-	muls r1, r6
-	ldr r5, _08053ADC @ =gSpeciesNames
-	adds r1, r5
-	bl StringCopy
-	ldr r0, _08053AE0 @ =gStringVar2
-	ldrh r1, [r4, 0xC]
-	muls r1, r6
-	adds r1, r5
-	bl StringCopy
-	ldrh r0, [r4, 0x38]
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_08053AD0: .4byte gSpecialVar_0x8004
-_08053AD4: .4byte gIngameTrades
-_08053AD8: .4byte gStringVar1
-_08053ADC: .4byte gSpeciesNames
-_08053AE0: .4byte gStringVar2
-	thumb_func_end GetInGameTradeSpeciesInfo
-
-	thumb_func_start BufferInGameTradeMonName
-BufferInGameTradeMonName: @ 8053AE4
-	push {r4,lr}
-	sub sp, 0x20
-	ldr r0, _08053B2C @ =gSpecialVar_0x8004
-	ldrh r0, [r0]
-	lsls r4, r0, 4
-	subs r4, r0
-	lsls r4, 2
-	ldr r0, _08053B30 @ =gIngameTrades
-	adds r4, r0
-	ldr r0, _08053B34 @ =gSpecialVar_0x8005
-	ldrh r1, [r0]
-	movs r0, 0x64
-	muls r0, r1
-	ldr r1, _08053B38 @ =gPlayerParty
-	adds r0, r1
-	movs r1, 0x2
-	mov r2, sp
-	bl GetMonData
-	ldr r0, _08053B3C @ =gStringVar1
-	mov r1, sp
-	bl StringCopy10
-	ldr r0, _08053B40 @ =gStringVar2
-	ldrh r2, [r4, 0xC]
-	movs r1, 0xB
-	muls r1, r2
-	ldr r2, _08053B44 @ =gSpeciesNames
-	adds r1, r2
-	bl StringCopy
-	add sp, 0x20
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053B2C: .4byte gSpecialVar_0x8004
-_08053B30: .4byte gIngameTrades
-_08053B34: .4byte gSpecialVar_0x8005
-_08053B38: .4byte gPlayerParty
-_08053B3C: .4byte gStringVar1
-_08053B40: .4byte gStringVar2
-_08053B44: .4byte gSpeciesNames
-	thumb_func_end BufferInGameTradeMonName
-
-	thumb_func_start sub_8053B48
-sub_8053B48: @ 8053B48
-	push {r4-r7,lr}
-	sub sp, 0x38
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, 24
-	lsrs r1, 24
-	lsls r2, r1, 4
-	subs r2, r1
-	lsls r2, 2
-	ldr r1, _08053CA4 @ =gIngameTrades
-	adds r5, r2, r1
-	movs r1, 0x64
-	muls r0, r1
-	ldr r1, _08053CA8 @ =gPlayerParty
-	adds r0, r1
-	movs r1, 0x38
-	bl GetMonData
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	add r4, sp, 0x34
-	movs r0, 0xFE
-	strb r0, [r4]
-	ldr r6, _08053CAC @ =gEnemyParty
-	ldrh r1, [r5, 0xC]
-	movs r3, 0x1
-	str r3, [sp]
-	ldr r0, [r5, 0x24]
-	str r0, [sp, 0x4]
-	str r3, [sp, 0x8]
-	ldr r0, [r5, 0x18]
-	str r0, [sp, 0xC]
-	adds r0, r6, 0
-	movs r3, 0x20
-	bl CreateMon
-	adds r2, r5, 0
-	adds r2, 0xE
-	adds r0, r6, 0
-	movs r1, 0x27
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0xF
-	adds r0, r6, 0
-	movs r1, 0x28
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x10
-	adds r0, r6, 0
-	movs r1, 0x29
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x11
-	adds r0, r6, 0
-	movs r1, 0x2A
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x12
-	adds r0, r6, 0
-	movs r1, 0x2B
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x13
-	adds r0, r6, 0
-	movs r1, 0x2C
-	bl SetMonData
-	adds r0, r6, 0
-	movs r1, 0x2
-	adds r2, r5, 0
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x2B
-	adds r0, r6, 0
-	movs r1, 0x7
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x36
-	adds r0, r6, 0
-	movs r1, 0x31
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x14
-	adds r0, r6, 0
-	movs r1, 0x2E
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x1D
-	adds r0, r6, 0
-	movs r1, 0x17
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x1E
-	adds r0, r6, 0
-	movs r1, 0x18
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x1C
-	adds r0, r6, 0
-	movs r1, 0x16
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x1F
-	adds r0, r6, 0
-	movs r1, 0x21
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x20
-	adds r0, r6, 0
-	movs r1, 0x2F
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x37
-	adds r0, r6, 0
-	movs r1, 0x30
-	bl SetMonData
-	adds r0, r6, 0
-	movs r1, 0x23
-	adds r2, r4, 0
-	bl SetMonData
-	mov r4, sp
-	adds r4, 0x35
-	movs r0, 0
-	strb r0, [r4]
-	ldrh r0, [r5, 0x28]
-	cmp r0, 0
-	beq _08053CC0
-	bl ItemIsMail
-	lsls r0, 24
-	cmp r0, 0
-	beq _08053CB4
-	add r0, sp, 0x10
-	adds r1, r5, 0
-	bl sub_8053CD4
-	ldr r0, _08053CB0 @ =gLinkPartnerMail
-	add r1, sp, 0x10
-	ldm r1!, {r2,r3,r7}
-	stm r0!, {r2,r3,r7}
-	ldm r1!, {r2,r3,r7}
-	stm r0!, {r2,r3,r7}
-	ldm r1!, {r2,r3,r7}
-	stm r0!, {r2,r3,r7}
-	adds r0, r6, 0
-	movs r1, 0x40
-	adds r2, r4, 0
-	bl SetMonData
-	adds r2, r5, 0
-	adds r2, 0x28
-	adds r0, r6, 0
-	movs r1, 0xC
-	bl SetMonData
-	b _08053CC0
-	.align 2, 0
-_08053CA4: .4byte gIngameTrades
-_08053CA8: .4byte gPlayerParty
-_08053CAC: .4byte gEnemyParty
-_08053CB0: .4byte gLinkPartnerMail
-_08053CB4:
-	adds r2, r5, 0
-	adds r2, 0x28
-	adds r0, r6, 0
-	movs r1, 0xC
-	bl SetMonData
-_08053CC0:
-	ldr r0, _08053CD0 @ =gEnemyParty
-	bl CalculateMonStats
-	add sp, 0x38
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053CD0: .4byte gEnemyParty
-	thumb_func_end sub_8053B48
-
-	thumb_func_start sub_8053CD4
-sub_8053CD4: @ 8053CD4
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	adds r5, r1, 0
-	ldr r2, _08053D28 @ =gUnknown_826D1A8
-	adds r0, r5, 0
-	adds r0, 0x2A
-	ldrb r1, [r0]
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 2
-	adds r2, r0, r2
-	adds r1, r4, 0
-	movs r3, 0x8
-_08053CEE:
-	ldrh r0, [r2]
-	strh r0, [r1]
-	adds r2, 0x2
-	adds r1, 0x2
-	subs r3, 0x1
-	cmp r3, 0
-	bge _08053CEE
-	adds r0, r4, 0
-	adds r0, 0x12
-	adds r1, r5, 0
-	adds r1, 0x2B
-	bl StringCopy
-	ldr r1, [r5, 0x18]
-	lsrs r0, r1, 24
-	strb r0, [r4, 0x1A]
-	lsrs r0, r1, 16
-	strb r0, [r4, 0x1B]
-	lsrs r0, r1, 8
-	strb r0, [r4, 0x1C]
-	strb r1, [r4, 0x1D]
-	ldrh r0, [r5, 0xC]
-	strh r0, [r4, 0x1E]
-	ldrh r0, [r5, 0x28]
-	strh r0, [r4, 0x20]
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053D28: .4byte gUnknown_826D1A8
-	thumb_func_end sub_8053CD4
-
-	thumb_func_start GetTradeSpecies
-GetTradeSpecies: @ 8053D2C
-	push {r4-r6,lr}
-	ldr r6, _08053D58 @ =gSpecialVar_0x8005
-	ldrh r0, [r6]
-	movs r5, 0x64
-	muls r0, r5
-	ldr r4, _08053D5C @ =gPlayerParty
-	adds r0, r4
-	movs r1, 0x2D
-	bl GetMonData
-	cmp r0, 0
-	bne _08053D60
-	ldrh r0, [r6]
-	muls r0, r5
-	adds r0, r4
-	movs r1, 0xB
-	bl GetMonData
-	lsls r0, 16
-	lsrs r0, 16
-	b _08053D62
-	.align 2, 0
-_08053D58: .4byte gSpecialVar_0x8005
-_08053D5C: .4byte gPlayerParty
-_08053D60:
-	movs r0, 0
-_08053D62:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end GetTradeSpecies
-
-	thumb_func_start CreateInGameTradePokemon
-CreateInGameTradePokemon: @ 8053D68
-	push {lr}
-	ldr r0, _08053D7C @ =gSpecialVar_0x8005
-	ldrb r0, [r0]
-	ldr r1, _08053D80 @ =gSpecialVar_0x8004
-	ldrb r1, [r1]
-	bl sub_8053B48
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053D7C: .4byte gSpecialVar_0x8005
-_08053D80: .4byte gSpecialVar_0x8004
-	thumb_func_end CreateInGameTradePokemon
-
-	thumb_func_start CB2_RunTradeAnim_LinkTrade
-CB2_RunTradeAnim_LinkTrade: @ 8053D84
-	push {r4-r6,lr}
-	bl sub_8050F14
-	lsls r0, 24
-	lsrs r6, r0, 24
-	cmp r6, 0x1
-	bne _08053DE6
-	ldr r5, _08053E08 @ =sTradeData
-	ldr r0, [r5]
-	adds r0, 0x8E
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	ldr r4, _08053E0C @ =gSprites
-	adds r0, r4
-	bl DestroySprite
-	ldr r0, [r5]
-	adds r0, 0x8F
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r4
-	bl FreeSpriteOamMatrix
-	ldr r0, _08053E10 @ =gSelectedTradeMonPositions
-	ldrb r4, [r0]
-	ldrb r0, [r0, 0x1]
-	movs r1, 0x6
-	bl __umodsi3
-	adds r1, r0, 0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r0, r4, 0
-	bl TradeMons
-	ldr r0, [r5]
-	adds r2, r0, 0
-	adds r2, 0x74
-	ldr r1, _08053E14 @ =0x0000abcd
-	strh r1, [r2]
-	adds r0, 0x93
-	strb r6, [r0]
-	ldr r0, _08053E18 @ =sub_8053E1C
-	bl SetMainCallback2
-_08053DE6:
-	bl sub_80508F4
-	bl sub_805383C
-	bl RunTasks
-	bl RunTextPrinters
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053E08: .4byte sTradeData
-_08053E0C: .4byte gSprites
-_08053E10: .4byte gSelectedTradeMonPositions
-_08053E14: .4byte 0x0000abcd
-_08053E18: .4byte sub_8053E1C
-	thumb_func_end CB2_RunTradeAnim_LinkTrade
-
-	thumb_func_start sub_8053E1C
-sub_8053E1C: @ 8053E1C
-	push {r4,lr}
-	bl sub_804FFC4
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl sub_805383C
-	cmp r4, 0
-	bne _08053E68
-	ldr r4, _08053E80 @ =sTradeData
-	ldr r2, [r4]
-	adds r0, r2, 0
-	adds r0, 0x72
-	ldrh r1, [r0]
-	ldr r0, _08053E84 @ =0x00000101
-	cmp r1, r0
-	bne _08053E68
-	adds r1, r2, 0
-	adds r1, 0x74
-	ldr r0, _08053E88 @ =0x0000dcba
-	strh r0, [r1]
-	bl bitmask_all_link_players_but_self
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r1, [r4]
-	adds r1, 0x74
-	movs r2, 0x14
-	bl SendBlock
-	ldr r0, [r4]
-	adds r0, 0x72
-	movs r1, 0x2
-	strb r1, [r0]
-	ldr r0, [r4]
-	adds r0, 0x73
-	strb r1, [r0]
-_08053E68:
-	bl RunTasks
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08053E80: .4byte sTradeData
-_08053E84: .4byte 0x00000101
-_08053E88: .4byte 0x0000dcba
-	thumb_func_end sub_8053E1C
-
 	thumb_func_start sub_8053E8C
 sub_8053E8C: @ 8053E8C
 	push {r4,lr}
diff --git a/data/ingame_trades.inc b/data/ingame_trades.inc
index c3447d79b..ef0bf0993 100644
--- a/data/ingame_trades.inc
+++ b/data/ingame_trades.inc
@@ -1,4 +1,4 @@
-gIngameTrades:: @ 826CF8C
+gInGameTrades:: @ 826CF8C
 	.string "MIMIEN$", 11
 	.align 1
 	.2byte SPECIES_MR_MIME @ species
@@ -161,7 +161,7 @@ gIngameTrades:: @ 826CF8C
 	.2byte SPECIES_PONYTA @ species requested
 	.align 2
 
-gUnknown_826D1A8:: @ 826D1A8
+sInGameTradeMailMessages:: @ 826D1A8
 	.2byte EC_WORD_THAT_S
 	.2byte EC_WORD_A
 	.2byte EC_WORD_HEALTHY
diff --git a/include/constants/flags.h b/include/constants/flags.h
index 082e12f87..80eaca3e0 100644
--- a/include/constants/flags.h
+++ b/include/constants/flags.h
@@ -1,7 +1,7 @@
 #ifndef GUARD_CONSTANTS_FLAGS_H
 #define GUARD_CONSTANTS_FLAGS_H
 
-// TODO: Get correct names and numbers
+#include "constants/trainers.h"
 
 #define FLAG_TEMP_1              0x001
 #define FLAG_TEMP_2              0x002
@@ -1309,10 +1309,12 @@
 
 #define FLAG_TRAINER_FLAG_START  0x500
 
-#define TRAINERS_FLAG_NO    0x2E7 // 743
-#define TRAINER_FLAGS_WORDS 0x300
-
-#define SYS_FLAGS           (FLAG_TRAINER_FLAG_START + TRAINER_FLAGS_WORDS) // 0x800
+// Vanilla: SYS_FLAGS = 0x800
+#if (NUM_TRAINERS) & 31
+#define SYS_FLAGS (FLAG_TRAINER_FLAG_START + ((NUM_TRAINERS) + 31) / 32 * 32)
+#else
+#define SYS_FLAGS (FLAG_TRAINER_FLAG_START + (NUM_TRAINERS))
+#endif
 
 // SYSTEM FLAGS
 
diff --git a/include/constants/region_map.h b/include/constants/region_map.h
index 527acf2c9..0957a72ee 100644
--- a/include/constants/region_map.h
+++ b/include/constants/region_map.h
@@ -200,4 +200,6 @@
 #define MAPSEC_SPECIAL_AREA                 0xC4
 #define MAPSEC_NONE                         0xC5
 
+#define MAPSEC_IN_GAME_TRADE                0xFE
+
 #endif //GUARD_CONSTANTS_REGION_MAP_H
diff --git a/src/trade.c b/src/trade.c
index 40be0774b..f33388eed 100644
--- a/src/trade.c
+++ b/src/trade.c
@@ -38,6 +38,7 @@
 #include "constants/items.h"
 #include "constants/easy_chat.h"
 #include "constants/songs.h"
+#include "constants/region_map.h"
 #include "constants/moves.h"
 
 struct InGameTrade {
@@ -201,13 +202,17 @@ void sub_8050E24(void);
 u8 sub_8050F14(void);
 u8 sub_8050F3C(void);
 u8 sub_805232C(void);
+void SpriteCB_TradePokeball_Outbound(struct Sprite * sprite);
+void SpriteCB_TradePokeball_Outbound2(struct Sprite * sprite);
+void SpriteCB_TradePokeball_Inbound(struct Sprite * sprite);
+void BufferInGameTradeMonName(void);
+static void GetInGameTradeMail(struct MailStruct * mail, const struct InGameTrade * inGameTrade);
 void CB2_RunTradeAnim_LinkTrade(void);
+void sub_8053E1C(void);
+void sub_8053E8C(void);
 void LoadHeldItemIcons(void);
 void DrawTextOnTradeWindow(u8 windowId, const u8 *str, s8 speed);
 void CheckPartnersMonForRibbons(void);
-void BufferInGameTradeMonName(void);
-void SpriteCB_TradePokeball_Outbound(struct Sprite * sprite);
-void SpriteCB_TradePokeball_Inbound(struct Sprite * sprite);
 void Task_AnimateWirelessSignal(u8 taskId);
 void c3_0805465C(u8 taskId);
 void sub_8054734(u8 taskId);
@@ -258,7 +263,7 @@ extern const struct SpriteSheet gUnknown_826CEB0;
 extern const struct SpriteSheet gUnknown_826CF28;
 extern const struct SpritePalette gUnknown_826CE34;
 extern const struct SpritePalette gUnknown_826CE3C;
-extern const struct InGameTrade gIngameTrades[];
+extern const struct InGameTrade gInGameTrades[];
 extern const struct SpriteTemplate sTradePokeballSpriteTemplate;
 extern const struct SpriteTemplate gUnknown_826CF30;
 extern const struct SpriteTemplate sGameLinkCableEndSpriteTemplate;
@@ -266,6 +271,8 @@ extern const struct SpriteTemplate gUnknown_826CE44;
 extern const struct SpriteTemplate sGlowBallSpriteTemplate;
 extern const union AffineAnimCmd *const gUnknown_826CF88[];
 extern const struct SpriteTemplate gUnknown_826CF48;
+extern const s8 gUnknown_826D1E4[];
+extern const u16 sInGameTradeMailMessages[][10];
 
 void sub_804C600(void)
 {
@@ -4737,7 +4744,7 @@ void sub_8050E24(void)
     }
     else
     {
-        inGameTrade = &gIngameTrades[gSpecialVar_0x8004];
+        inGameTrade = &gInGameTrades[gSpecialVar_0x8004];
         StringCopy(gStringVar1, inGameTrade->otName);
         StringCopy10(gStringVar3, inGameTrade->nickname);
         GetMonData(&gPlayerParty[gSpecialVar_0x8005], MON_DATA_NICKNAME, nickname);
@@ -5770,3 +5777,260 @@ bool8 sub_805232C(void)
     }
     return FALSE;
 }
+
+void sub_8053788(void)
+{
+    u16 evoSpecies;
+    switch (gMain.state)
+    {
+    case 0:
+        gMain.state = 4;
+        gSoftResetDisabled = TRUE;
+        break;
+    case 4:
+        gCB2_AfterEvolution = sub_8053E8C;
+        evoSpecies = GetEvolutionTargetSpecies(&gPlayerParty[gSelectedTradeMonPositions[0]], 1, 0);
+        if (evoSpecies != SPECIES_NONE)
+            TradeEvolutionScene(&gPlayerParty[gSelectedTradeMonPositions[0]], evoSpecies, sTradeData->pokePicSpriteIdxs[1], gSelectedTradeMonPositions[0]);
+        else
+            SetMainCallback2(sub_8053E8C);
+        gSelectedTradeMonPositions[0] = 0xFF;
+        break;
+    }
+    if (!HasLinkErrorOccurred())
+        RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+void sub_805383C(void)
+{
+    u8 recvStatus;
+    sub_804FFC4();
+    recvStatus = GetBlockReceivedStatus();
+    if (recvStatus & (1 << 0))
+    {
+        if (gBlockRecvBuffer[0][0] == 0xDCBA)
+            SetMainCallback2(sub_8053788);
+        if (gBlockRecvBuffer[0][0] == 0xABCD)
+            sTradeData->unk_72 = 1;
+        ResetBlockReceivedFlag(0);
+    }
+    if (recvStatus & (1 << 1))
+    {
+        if (gBlockRecvBuffer[1][0] == 0xABCD)
+            sTradeData->unk_73 = 1;
+        ResetBlockReceivedFlag(1);
+    }
+}
+
+void SpriteCB_TradePokeball_Default(struct Sprite * sprite)
+{
+    sprite->pos1.y += sprite->data[0] / 10;
+    sprite->data[5] += sprite->data[1];
+    sprite->pos1.x = sprite->data[5] / 10;
+    if (sprite->pos1.y > 76)
+    {
+        sprite->pos1.y = 76;
+        sprite->data[0] = -(sprite->data[0] * sprite->data[2]) / 100;
+        sprite->data[3]++;
+    }
+    if (sprite->pos1.x == 120)
+        sprite->data[1] = 0;
+    sprite->data[0] += sprite->data[4];
+    if (sprite->data[3] == 4)
+    {
+        sprite->data[7] = 1;
+        sprite->callback = SpriteCallbackDummy;
+    }
+}
+
+void SpriteCB_TradePokeball_Outbound(struct Sprite * sprite)
+{
+    sprite->pos2.y += gUnknown_826D1E4[sprite->data[0]];
+    if (sprite->data[0] == 22)
+        PlaySE(SE_KON);
+    sprite->data[0]++;
+    if (sprite->data[0] == 44)
+    {
+        PlaySE(SE_W025);
+        sprite->callback = SpriteCB_TradePokeball_Outbound2;
+        sprite->data[0] = 0;
+        BeginNormalPaletteFade(1 << (sprite->oam.paletteNum + 16), -1, 0, 16, RGB_WHITEALPHA);
+    }
+}
+
+void SpriteCB_TradePokeball_Outbound2(struct Sprite * sprite)
+{
+    if (sprite->data[1] == 20)
+        StartSpriteAffineAnim(sprite, 1);
+    sprite->data[1]++;
+    if (sprite->data[1] > 20)
+    {
+        sprite->pos2.y -= gUnknown_826D1E4[sprite->data[0]];
+        sprite->data[0]++;
+        if (sprite->data[0] == 23)
+        {
+            DestroySprite(sprite);
+            sTradeData->state = 14;
+        }
+    }
+}
+
+void SpriteCB_TradePokeball_Inbound(struct Sprite * sprite)
+{
+    if (sprite->data[2] == 0)
+    {
+        sprite->pos1.y += 4;
+        if (sprite->pos1.y > sprite->data[3])
+        {
+            sprite->data[2]++;
+            sprite->data[0] = 22;
+            PlaySE(SE_KON);
+        }
+    }
+    else
+    {
+        if (sprite->data[0] == 66)
+            PlaySE(SE_KON2);
+        if (sprite->data[0] == 92)
+            PlaySE(SE_KON3);
+        if (sprite->data[0] == 107)
+            PlaySE(SE_KON4);
+        sprite->pos2.y += gUnknown_826D1E4[sprite->data[0]];
+        sprite->data[0]++;
+        if (sprite->data[0] == 108)
+            sprite->callback = SpriteCallbackDummy;
+    }
+}
+
+u16 GetInGameTradeSpeciesInfo(void)
+{
+    // Populates gStringVar1 with the name of the requested species and
+    // gStringVar2 with the name of the offered species.
+    // Returns the requested species.
+    const struct InGameTrade * inGameTrade = &gInGameTrades[gSpecialVar_0x8004];
+    StringCopy(gStringVar1, gSpeciesNames[inGameTrade->requestedSpecies]);
+    StringCopy(gStringVar2, gSpeciesNames[inGameTrade->species]);
+    return inGameTrade->requestedSpecies;
+}
+
+void BufferInGameTradeMonName(void)
+{
+    // Populates gStringVar1 with the nickname of the sent Pokemon and
+    // gStringVar2 with the name of the offered species.
+    u8 nickname[30];
+    const struct InGameTrade * inGameTrade = &gInGameTrades[gSpecialVar_0x8004];
+    GetMonData(&gPlayerParty[gSpecialVar_0x8005], MON_DATA_NICKNAME, nickname);
+    StringCopy10(gStringVar1, nickname);
+    StringCopy(gStringVar2, gSpeciesNames[inGameTrade->species]);
+}
+
+void CreateInGameTradePokemonInternal(u8 playerSlot, u8 inGameTradeIdx)
+{
+    const struct InGameTrade *inGameTrade = &gInGameTrades[inGameTradeIdx];
+    u8 level = GetMonData(&gPlayerParty[playerSlot], MON_DATA_LEVEL);
+    struct MailStruct mail;
+    u8 metLocation = MAPSEC_IN_GAME_TRADE;
+    struct Pokemon * tradeMon = &gEnemyParty[0];
+    u8 mailNum;
+    CreateMon(tradeMon, inGameTrade->species, level, 32, TRUE, inGameTrade->personality, TRUE, inGameTrade->otId);
+    SetMonData(tradeMon, MON_DATA_HP_IV, &inGameTrade->ivs[0]);
+    SetMonData(tradeMon, MON_DATA_ATK_IV, &inGameTrade->ivs[1]);
+    SetMonData(tradeMon, MON_DATA_DEF_IV, &inGameTrade->ivs[2]);
+    SetMonData(tradeMon, MON_DATA_SPEED_IV, &inGameTrade->ivs[3]);
+    SetMonData(tradeMon, MON_DATA_SPATK_IV, &inGameTrade->ivs[4]);
+    SetMonData(tradeMon, MON_DATA_SPDEF_IV, &inGameTrade->ivs[5]);
+    SetMonData(tradeMon, MON_DATA_NICKNAME, inGameTrade->nickname);
+    SetMonData(tradeMon, MON_DATA_OT_NAME, inGameTrade->otName);
+    SetMonData(tradeMon, MON_DATA_OT_GENDER, &inGameTrade->otGender);
+    SetMonData(tradeMon, MON_DATA_ABILITY_NUM, &inGameTrade->abilityNum);
+    SetMonData(tradeMon, MON_DATA_BEAUTY, &inGameTrade->conditions[1]);
+    SetMonData(tradeMon, MON_DATA_CUTE, &inGameTrade->conditions[2]);
+    SetMonData(tradeMon, MON_DATA_COOL, &inGameTrade->conditions[0]);
+    SetMonData(tradeMon, MON_DATA_SMART, &inGameTrade->conditions[3]);
+    SetMonData(tradeMon, MON_DATA_TOUGH, &inGameTrade->conditions[4]);
+    SetMonData(tradeMon, MON_DATA_SHEEN, &inGameTrade->sheen);
+    SetMonData(tradeMon, MON_DATA_MET_LOCATION, &metLocation);
+    mailNum = 0;
+    if (inGameTrade->heldItem != ITEM_NONE)
+    {
+        if (ItemIsMail(inGameTrade->heldItem))
+        {
+            GetInGameTradeMail(&mail, inGameTrade);
+            gLinkPartnerMail[0] = mail;
+            SetMonData(tradeMon, MON_DATA_MAIL, &mailNum);
+            SetMonData(tradeMon, MON_DATA_HELD_ITEM, &inGameTrade->heldItem);
+        }
+        else
+        {
+            SetMonData(tradeMon, MON_DATA_HELD_ITEM, &inGameTrade->heldItem);
+        }
+    }
+    CalculateMonStats(&gEnemyParty[0]);
+}
+
+static void GetInGameTradeMail(struct MailStruct * mail, const struct InGameTrade * inGameTrade)
+{
+    int i;
+    for (i = 0; i < 9; i++)
+        mail->words[i] = sInGameTradeMailMessages[inGameTrade->mailNum][i];
+    StringCopy(mail->playerName, inGameTrade->otName);
+    mail->trainerId[0] = inGameTrade->otId >> 24;
+    mail->trainerId[1] = inGameTrade->otId >> 16;
+    mail->trainerId[2] = inGameTrade->otId >> 8;
+    mail->trainerId[3] = inGameTrade->otId;
+    mail->species = inGameTrade->species;
+    mail->itemId = inGameTrade->heldItem;
+}
+
+u16 GetTradeSpecies(void)
+{
+    if (GetMonData(&gPlayerParty[gSpecialVar_0x8005], MON_DATA_IS_EGG))
+        return SPECIES_NONE;
+    else
+        return GetMonData(&gPlayerParty[gSpecialVar_0x8005], MON_DATA_SPECIES);
+}
+
+void CreateInGameTradePokemon(void)
+{
+    CreateInGameTradePokemonInternal(gSpecialVar_0x8005, gSpecialVar_0x8004);
+}
+
+void CB2_RunTradeAnim_LinkTrade(void)
+{
+    if (sub_8050F14() == TRUE)
+    {
+        DestroySprite(&gSprites[sTradeData->pokePicSpriteIdxs[0]]);
+        FreeSpriteOamMatrix(&gSprites[sTradeData->pokePicSpriteIdxs[1]]);
+        TradeMons(gSelectedTradeMonPositions[0], gSelectedTradeMonPositions[1] % 6);
+        sTradeData->linkData[0] = 0xABCD;
+        sTradeData->unk_93 = 1;
+        SetMainCallback2(sub_8053E1C);
+    }
+    sub_80508F4();
+    sub_805383C();
+    RunTasks();
+    RunTextPrinters();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+void sub_8053E1C(void)
+{
+    u8 mpId = sub_804FFC4();
+    sub_805383C();
+    if (mpId == 0 && sTradeData->unk_72 == 1 && sTradeData->unk_73 == 1)
+    {
+        sTradeData->linkData[0] = 0xDCBA;
+        SendBlock(bitmask_all_link_players_but_self(), sTradeData->linkData, 20);
+        sTradeData->unk_72 = 2;
+        sTradeData->unk_73 = 2;
+    }
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}