Finish pokenav_unk_2

5 files changed, 294 insertions, 792 deletions

diff --git a/asm/pokenav_unk_2.s b/asm/pokenav_unk_2.s
deleted file mode 100644
index d74a485a8..000000000
--- a/asm/pokenav_unk_2.s
+++ /dev/null
@@ -1,787 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-@ File centered around AllocSubstruct(2)
-
-	thumb_func_start sub_81CA4AC
-sub_81CA4AC: @ 81CA4AC
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	ldrh r1, [r4, 0x2E]
-	movs r2, 0x2E
-	ldrsh r0, [r4, r2]
-	cmp r0, 0
-	bne _081CA574
-	movs r0, 0x30
-	ldrsh r5, [r4, r0]
-	cmp r5, 0
-	bne _081CA4E2
-	adds r0, r4, 0
-	movs r1, 0x1
-	bl StartSpriteAffineAnim
-	ldrh r0, [r4, 0x30]
-	adds r0, 0x1
-	strh r0, [r4, 0x30]
-	movs r0, 0x80
-	lsls r0, 1
-	strh r0, [r4, 0x32]
-	ldrh r0, [r4, 0x24]
-	ldrh r1, [r4, 0x20]
-	adds r0, r1
-	strh r0, [r4, 0x20]
-	strh r5, [r4, 0x24]
-	b _081CA578
-_081CA4E2:
-	ldrh r0, [r4, 0x32]
-	adds r0, 0x10
-	strh r0, [r4, 0x32]
-	movs r2, 0x32
-	ldrsh r0, [r4, r2]
-	asrs r1, r0, 3
-	adds r0, r1, 0
-	subs r0, 0x20
-	lsrs r1, r0, 31
-	adds r0, r1
-	asrs r1, r0, 1
-	movs r2, 0x3C
-	ldrsh r0, [r4, r2]
-	cmp r0, 0x1
-	beq _081CA518
-	cmp r0, 0x1
-	bgt _081CA50A
-	cmp r0, 0
-	beq _081CA514
-	b _081CA526
-_081CA50A:
-	cmp r0, 0x2
-	beq _081CA51C
-	cmp r0, 0x3
-	beq _081CA520
-	b _081CA526
-_081CA514:
-	negs r1, r1
-	b _081CA520
-_081CA518:
-	negs r0, r1
-	b _081CA524
-_081CA51C:
-	strh r1, [r4, 0x24]
-	b _081CA526
-_081CA520:
-	lsls r0, r1, 1
-	adds r0, r1
-_081CA524:
-	strh r0, [r4, 0x24]
-_081CA526:
-	adds r0, r4, 0
-	adds r0, 0x3F
-	ldrb r1, [r0]
-	movs r0, 0x20
-	ands r0, r1
-	cmp r0, 0
-	beq _081CA578
-	adds r2, r4, 0
-	adds r2, 0x3E
-	ldrb r0, [r2]
-	movs r1, 0x4
-	orrs r0, r1
-	strb r0, [r2]
-	ldrb r0, [r4, 0x3]
-	lsls r0, 26
-	lsrs r0, 27
-	bl FreeOamMatrix
-	ldrb r1, [r4, 0x1]
-	lsrs r1, 6
-	ldrb r2, [r4, 0x3]
-	lsrs r2, 6
-	adds r0, r4, 0
-	movs r3, 0
-	bl CalcCenterToCornerVec
-	ldrb r1, [r4, 0x1]
-	movs r0, 0x4
-	negs r0, r0
-	ands r0, r1
-	movs r1, 0xD
-	negs r1, r1
-	ands r0, r1
-	strb r0, [r4, 0x1]
-	ldr r0, =SpriteCallbackDummy
-	str r0, [r4, 0x1C]
-	b _081CA578
-	.pool
-_081CA574:
-	subs r0, r1, 0x1
-	strh r0, [r4, 0x2E]
-_081CA578:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA4AC
-
-	thumb_func_start sub_81CA580
-sub_81CA580: @ 81CA580
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	ldr r1, =gTasks + 0x8
-	adds r4, r0, r1
-	ldrh r0, [r4]
-	movs r1, 0
-	ldrsh r2, [r4, r1]
-	cmp r2, 0
-	bne _081CA634
-	movs r0, 0x2
-	ldrsh r1, [r4, r0]
-	cmp r1, 0
-	beq _081CA5AC
-	cmp r1, 0x1
-	beq _081CA5CC
-	b _081CA638
-	.pool
-_081CA5AC:
-	movs r0, 0x10
-	strh r0, [r4, 0x4]
-	strh r2, [r4, 0x6]
-	movs r1, 0xFC
-	lsls r1, 6
-	movs r0, 0x50
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0x10
-	bl SetGpuReg
-	ldrh r0, [r4, 0x2]
-	adds r0, 0x1
-	strh r0, [r4, 0x2]
-	b _081CA638
-_081CA5CC:
-	ldrh r0, [r4, 0x8]
-	ands r1, r0
-	cmp r1, 0
-	beq _081CA5E4
-	ldrh r0, [r4, 0x4]
-	subs r0, 0x3
-	strh r0, [r4, 0x4]
-	lsls r0, 16
-	cmp r0, 0
-	bge _081CA5F6
-	strh r2, [r4, 0x4]
-	b _081CA5F6
-_081CA5E4:
-	ldrh r0, [r4, 0x6]
-	adds r0, 0x3
-	strh r0, [r4, 0x6]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x10
-	ble _081CA5F6
-	movs r0, 0x10
-	strh r0, [r4, 0x6]
-_081CA5F6:
-	ldrh r1, [r4, 0x6]
-	lsls r1, 8
-	ldrh r0, [r4, 0x4]
-	orrs r1, r0
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0x52
-	bl SetGpuReg
-	ldrh r0, [r4, 0x8]
-	adds r0, 0x1
-	strh r0, [r4, 0x8]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0xC
-	bne _081CA638
-	movs r0, 0x2
-	bl GetSubstructPtr
-	ldrb r1, [r0, 0xC]
-	subs r1, 0x1
-	strb r1, [r0, 0xC]
-	movs r1, 0x80
-	lsls r1, 5
-	movs r0, 0x52
-	bl SetGpuReg
-	adds r0, r5, 0
-	bl DestroyTask
-	b _081CA638
-_081CA634:
-	subs r0, 0x1
-	strh r0, [r4]
-_081CA638:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA580
-
-	thumb_func_start sub_81CA640
-sub_81CA640: @ 81CA640
-	push {r4,lr}
-	movs r0, 0x2
-	bl GetSubstructPtr
-	adds r4, r0, 0
-	ldr r0, =gUnknown_0862036C
-	movs r1, 0x10
-	movs r2, 0x60
-	movs r3, 0x4
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	ldr r0, =gSprites
-	adds r1, r0
-	str r1, [r4, 0x28]
-	bl sub_81C98D4
-	cmp r0, 0
-	beq _081CA684
-	ldr r1, [r4, 0x28]
-	ldr r0, =sub_81CA6AC
-	str r0, [r1, 0x1C]
-	b _081CA690
-	.pool
-_081CA684:
-	ldr r0, [r4, 0x28]
-	adds r0, 0x3E
-	ldrb r1, [r0]
-	movs r2, 0x4
-	orrs r1, r2
-	strb r1, [r0]
-_081CA690:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA640
-
-	thumb_func_start sub_81CA698
-sub_81CA698: @ 81CA698
-	push {lr}
-	movs r0, 0x2
-	bl GetSubstructPtr
-	ldr r0, [r0, 0x28]
-	bl DestroySprite
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA698
-
-	thumb_func_start sub_81CA6AC
-sub_81CA6AC: @ 81CA6AC
-	push {lr}
-	adds r3, r0, 0
-	ldrh r0, [r3, 0x2E]
-	adds r0, 0x1
-	strh r0, [r3, 0x2E]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x8
-	ble _081CA6DA
-	movs r0, 0
-	strh r0, [r3, 0x2E]
-	adds r3, 0x3E
-	ldrb r2, [r3]
-	lsls r0, r2, 29
-	lsrs r0, 31
-	movs r1, 0x1
-	eors r1, r0
-	lsls r1, 2
-	movs r0, 0x5
-	negs r0, r0
-	ands r0, r2
-	orrs r0, r1
-	strb r0, [r3]
-_081CA6DA:
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA6AC
-
-	thumb_func_start sub_81CA6E0
-sub_81CA6E0: @ 81CA6E0
-	push {r4,lr}
-	movs r0, 0x2
-	bl GetSubstructPtr
-	adds r4, r0, 0
-	ldr r0, =gUnknown_086202CC
-	bl AddWindow
-	strh r0, [r4, 0x8]
-	lsls r0, 24
-	lsrs r0, 24
-	bl PutWindowTilemap
-	ldrb r0, [r4, 0x8]
-	movs r1, 0x66
-	bl FillWindowPixelBuffer
-	ldrb r0, [r4, 0x8]
-	movs r1, 0x3
-	bl CopyWindowToVram
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA6E0
-
-	thumb_func_start sub_81CA714
-sub_81CA714: @ 81CA714
-	push {r4-r6,lr}
-	sub sp, 0xC
-	movs r0, 0x2
-	bl GetSubstructPtr
-	adds r5, r0, 0
-	bl sub_81C98B4
-	ldr r1, =gUnknown_086202D4
-	lsls r0, 2
-	adds r0, r1
-	ldr r6, [r0]
-	movs r2, 0x1
-	negs r2, r2
-	movs r0, 0x1
-	adds r1, r6, 0
-	bl GetStringWidth
-	adds r4, r0, 0
-	ldrb r0, [r5, 0x8]
-	movs r1, 0x66
-	bl FillWindowPixelBuffer
-	ldrb r0, [r5, 0x8]
-	movs r2, 0xC0
-	subs r2, r4
-	lsrs r2, 1
-	lsls r2, 24
-	lsrs r2, 24
-	ldr r1, =gUnknown_0862030C
-	str r1, [sp]
-	movs r1, 0
-	str r1, [sp, 0x4]
-	str r6, [sp, 0x8]
-	movs r1, 0x1
-	movs r3, 0x1
-	bl AddTextPrinterParameterized3
-	add sp, 0xC
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA714
-
-	thumb_func_start sub_81CA770
-sub_81CA770: @ 81CA770
-	push {r4-r6,lr}
-	sub sp, 0xC
-	movs r0, 0x2
-	bl GetSubstructPtr
-	adds r5, r0, 0
-	ldr r6, =gText_NoRibbonWinners
-	movs r2, 0x1
-	negs r2, r2
-	movs r0, 0x1
-	adds r1, r6, 0
-	bl GetStringWidth
-	adds r4, r0, 0
-	ldrb r0, [r5, 0x8]
-	movs r1, 0x66
-	bl FillWindowPixelBuffer
-	ldrb r0, [r5, 0x8]
-	movs r2, 0xC0
-	subs r2, r4
-	lsrs r2, 1
-	lsls r2, 24
-	lsrs r2, 24
-	ldr r1, =gUnknown_0862030F
-	str r1, [sp]
-	movs r1, 0
-	str r1, [sp, 0x4]
-	str r6, [sp, 0x8]
-	movs r1, 0x1
-	movs r3, 0x1
-	bl AddTextPrinterParameterized3
-	add sp, 0xC
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA770
-
-	thumb_func_start sub_81CA7C4
-sub_81CA7C4: @ 81CA7C4
-	push {lr}
-	bl IsDma3ManagerBusyWithBgCopy
-	lsls r0, 24
-	lsrs r0, 24
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81CA7C4
-
-	thumb_func_start sub_81CA7D4
-sub_81CA7D4: @ 81CA7D4
-	push {r4,lr}
-	movs r0, 0x2
-	bl GetSubstructPtr
-	adds r4, r0, 0
-	ldr r0, =sub_81CA808
-	movs r1, 0x2
-	bl CreateTask
-	strb r0, [r4, 0xA]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA7D4
-
-	thumb_func_start sub_81CA7F4
-sub_81CA7F4: @ 81CA7F4
-	push {lr}
-	movs r0, 0x2
-	bl GetSubstructPtr
-	ldrb r0, [r0, 0xA]
-	bl DestroyTask
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA7F4
-
-	thumb_func_start sub_81CA808
-sub_81CA808: @ 81CA808
-	push {lr}
-	movs r0, 0x3
-	movs r1, 0x80
-	movs r2, 0x1
-	bl ChangeBgX
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA808
-
-	thumb_func_start sub_81CA818
-sub_81CA818: @ 81CA818
-	push {r4,r5,lr}
-	ldr r0, =sub_81CA8B0
-	movs r1, 0x3
-	bl CreateTask
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldr r5, =gUnknown_0861FC78 + 2
-	adds r0, r4, 0
-	movs r1, 0x1
-	adds r2, r5, 0
-	bl SetWordTaskArg
-	adds r5, 0xC
-	adds r0, r4, 0
-	movs r1, 0x3
-	adds r2, r5, 0
-	bl SetWordTaskArg
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA818
-
-	thumb_func_start sub_81CA850
-sub_81CA850: @ 81CA850
-	push {lr}
-	ldr r0, =gUnknown_0861FC78 + 0xE
-	movs r1, 0x31
-	movs r2, 0x4
-	bl CopyPaletteIntoBufferUnfaded
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA850
-
-	thumb_func_start sub_81CA864
-sub_81CA864: @ 81CA864
-	push {r4,r5,lr}
-	ldr r0, =sub_81CA8B0
-	movs r1, 0x3
-	bl CreateTask
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldr r5, =gUnknown_0861FC78 + 0xE
-	adds r0, r4, 0
-	movs r1, 0x1
-	adds r2, r5, 0
-	bl SetWordTaskArg
-	subs r5, 0xC
-	adds r0, r4, 0
-	movs r1, 0x3
-	adds r2, r5, 0
-	bl SetWordTaskArg
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA864
-
-	thumb_func_start sub_81CA89C
-sub_81CA89C: @ 81CA89C
-	push {lr}
-	ldr r0, =sub_81CA8B0
-	bl FuncIsActiveTask
-	lsls r0, 24
-	lsrs r0, 24
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_81CA89C
-
-	thumb_func_start sub_81CA8B0
-sub_81CA8B0: @ 81CA8B0
-	push {r4-r6,lr}
-	sub sp, 0xC
-	lsls r0, 24
-	lsrs r6, r0, 24
-	lsls r4, r6, 2
-	adds r4, r6
-	lsls r4, 3
-	ldr r0, =gTasks + 0x8
-	adds r4, r0
-	adds r0, r6, 0
-	movs r1, 0x1
-	bl GetWordTaskArg
-	adds r5, r0, 0
-	adds r0, r6, 0
-	movs r1, 0x3
-	bl GetWordTaskArg
-	adds r1, r0, 0
-	ldrh r0, [r4]
-	adds r0, 0x1
-	strh r0, [r4]
-	lsls r0, 16
-	asrs r0, 16
-	str r0, [sp]
-	add r0, sp, 0x8
-	str r0, [sp, 0x4]
-	adds r0, r5, 0
-	movs r2, 0x2
-	movs r3, 0xC
-	bl sub_81C79BC
-	add r0, sp, 0x8
-	movs r1, 0x31
-	movs r2, 0x4
-	bl LoadPalette
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	cmp r0, 0xC
-	bne _081CA908
-	adds r0, r6, 0
-	bl DestroyTask
-_081CA908:
-	add sp, 0xC
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA8B0
-
-	thumb_func_start sub_81CA914
-sub_81CA914: @ 81CA914
-	push {lr}
-	bl TransferPlttBuffer
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl ScanlineEffect_InitHBlankDmaTransfer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA914
-
-	thumb_func_start titlescreen_0
-titlescreen_0: @ 81CA92C
-	push {lr}
-	movs r0, 0x50
-	movs r1, 0x90
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	movs r1, 0x80
-	lsls r1, 6
-	movs r0, 0
-	bl SetGpuRegBits
-	movs r0, 0x48
-	movs r1, 0x3F
-	bl SetGpuRegBits
-	movs r0, 0x4A
-	movs r1, 0x1F
-	bl SetGpuRegBits
-	movs r0, 0x44
-	movs r1, 0xA0
-	bl SetGpuRegBits
-	bl ScanlineEffect_Stop
-	bl sub_81CAA3C
-	ldr r2, =gUnknown_08620384
-	ldr r0, [r2]
-	ldr r1, [r2, 0x4]
-	ldr r2, [r2, 0x8]
-	bl ScanlineEffect_SetParams
-	ldr r0, =sub_81CA914
-	bl SetVBlankCallback_
-	ldr r0, =sub_81CA9EC
-	movs r1, 0x3
-	bl CreateTask
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end titlescreen_0
-
-	thumb_func_start sub_81CA994
-sub_81CA994: @ 81CA994
-	push {lr}
-	movs r0, 0x50
-	movs r1, 0
-	bl SetGpuReg
-	movs r1, 0x80
-	lsls r1, 6
-	movs r0, 0
-	bl ClearGpuRegBits
-	bl ScanlineEffect_Stop
-	ldr r0, =sub_81CA9EC
-	bl FindTaskIdByFunc
-	lsls r0, 24
-	lsrs r0, 24
-	bl DestroyTask
-	bl SetPokenavVBlankCallback
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA994
-
-	thumb_func_start sub_81CA9C8
-sub_81CA9C8: @ 81CA9C8
-	push {lr}
-	movs r0, 0x50
-	movs r1, 0
-	bl SetGpuReg
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA9C8
-
-	thumb_func_start sub_81CA9D8
-sub_81CA9D8: @ 81CA9D8
-	push {lr}
-	bl sub_81CAA3C
-	movs r0, 0x50
-	movs r1, 0x90
-	bl SetGpuReg
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CA9D8
-
-	thumb_func_start sub_81CA9EC
-sub_81CA9EC: @ 81CA9EC
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, =gTasks + 0x8
-	adds r2, r1, r0
-	ldrh r0, [r2]
-	adds r0, 0x1
-	strh r0, [r2]
-	lsls r0, 16
-	cmp r0, 0
-	ble _081CAA30
-	movs r0, 0
-	strh r0, [r2]
-	ldrh r0, [r2, 0x2]
-	adds r0, 0x3
-	movs r1, 0x7F
-	ands r0, r1
-	strh r0, [r2, 0x2]
-	ldr r1, =gSineTable
-	movs r3, 0x2
-	ldrsh r0, [r2, r3]
-	lsls r0, 1
-	adds r0, r1
-	ldrh r1, [r0]
-	lsls r1, 16
-	asrs r1, 21
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0x54
-	bl SetGpuReg
-_081CAA30:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CA9EC
-
-	thumb_func_start sub_81CAA3C
-sub_81CAA3C: @ 81CAA3C
-	push {r4-r6,lr}
-	mov r6, r9
-	mov r5, r8
-	push {r5,r6}
-	sub sp, 0x8
-	bl sub_81C9894
-	adds r4, r0, 0
-	bl sub_81C98A4
-	ldr r2, =gUnknown_08620240
-	lsls r1, r4, 3
-	subs r1, r4
-	lsls r1, 2
-	adds r1, r2
-	ldrh r2, [r1, 0x2]
-	adds r4, r2, 0
-	muls r4, r0
-	ldrh r1, [r1]
-	adds r4, r1
-	subs r4, 0x8
-	mov r0, sp
-	movs r6, 0
-	strh r6, [r0]
-	ldr r5, =gScanlineEffectRegBuffers
-	ldr r0, =0x010000a0
-	mov r8, r0
-	mov r0, sp
-	adds r1, r5, 0
-	mov r2, r8
-	bl CpuSet
-	mov r0, sp
-	adds r0, 0x2
-	strh r6, [r0]
-	movs r1, 0xF0
-	lsls r1, 3
-	adds r1, r5
-	mov r9, r1
-	mov r2, r8
-	bl CpuSet
-	add r0, sp, 0x4
-	ldr r1, =0x000072f0
-	adds r6, r1, 0
-	strh r6, [r0]
-	lsls r4, 1
-	adds r5, r4, r5
-	ldr r1, =0x01000010
-	mov r8, r1
-	adds r1, r5, 0
-	mov r2, r8
-	bl CpuSet
-	mov r0, sp
-	adds r0, 0x6
-	strh r6, [r0]
-	add r4, r9
-	adds r1, r4, 0
-	mov r2, r8
-	bl CpuSet
-	add sp, 0x8
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81CAA3C
-
-	thumb_func_start sub_81CAADC
-sub_81CAADC: @ 81CAADC
-	push {lr}
-	bl sub_81CA9C8
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81CAADC
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/include/pokenav.h b/include/pokenav.h
index ecf66de51..75f08a9e9 100644
--- a/include/pokenav.h
+++ b/include/pokenav.h
@@ -152,8 +152,9 @@ u32 sub_81C941C(void);
 void sub_81C9430(void);
 int sub_81C9894(void);
 const u8 *sub_81CAF78(int index, u8 *arg1);
-u16 sub_81C98C4(void);
 int sub_81C98A4(void);
+int sub_81C98B4(void);
+u16 sub_81C98C4(void);
 
 // pokenav_unk_2.c
 void sub_81C99D4(void);
diff --git a/include/strings.h b/include/strings.h
index 97285b051..f2d3f23ad 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -2766,6 +2766,7 @@ extern const u8 gUnknown_085EBE06[];
 extern const u8 gUnknown_085EBE19[];
 extern const u8 gUnknown_085EBE2D[];
 extern const u8 gUnknown_085EBE41[];
+extern const u8 gText_NoRibbonWinners[];
 
 // pokenav_unk_4
 extern const u8 gUnknown_085EC017[];
diff --git a/ld_script.txt b/ld_script.txt
index 769df23f8..f3531344b 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -310,7 +310,6 @@ SECTIONS {
         src/pokenav_match_call_ui.o(.text);
         src/pokenav_unk_1.o(.text);
         src/pokenav_unk_2.o(.text);
-        asm/pokenav_unk_2.o(.text);
         src/pokenav_unk_3.o(.text);
         src/pokenav_unk_4.o(.text);
         src/pokenav_unk_5.o(.text);
diff --git a/src/pokenav_unk_2.c b/src/pokenav_unk_2.c
index b428e20c6..a21109316 100644
--- a/src/pokenav_unk_2.c
+++ b/src/pokenav_unk_2.c
@@ -2,6 +2,8 @@
 #include "alloc.h"
 #include "decompress.h"
 #include "bg.h"
+#include "palette.h"
+#include "trig.h"
 #include "gpu_regs.h"
 #include "menu.h"
 #include "window.h"
@@ -20,14 +22,13 @@ struct Pokenav2Struct
 {
     bool32 (*callback)(void);
     u32 loopedTaskId;
-    u8 field_008;
-    u8 field_009;
+    u16 field_008;
     u8 field_00a;
     u8 field_00b;
     u8 field_00c;
     u8 field_00d;
     bool32 field_010[6];
-    u8 filler_028[4];
+    struct Sprite * field_028;
     struct Sprite * field_02c[6][4];
     u8 field_08c[0x800];
 };
@@ -60,6 +61,7 @@ void sub_81CA474(struct Sprite * sprite);
 void sub_81CA4AC(struct Sprite * sprite);
 void sub_81CA580(u8 taskId);
 void sub_81CA640(void);
+void sub_81CA6AC(struct Sprite * sprite);
 void sub_81CA698(void);
 void sub_81CA6E0(void);
 void sub_81CA714(void);
@@ -67,14 +69,17 @@ void sub_81CA770(void);
 bool32 sub_81CA7C4(void);
 void sub_81CA7D4(void);
 void sub_81CA7F4(void);
+void sub_81CA808(u8 taskId);
 void sub_81CA818(void);
 void sub_81CA850(void);
 void sub_81CA864(void);
 bool32 sub_81CA89C(void);
+void sub_81CA8B0(u8 taskId);
 void titlescreen_0(void);
 void sub_81CA994(void);
 void sub_81CA9C8(void);
 void sub_81CA9D8(void);
+void sub_81CA9EC(u8 taskId);
 void sub_81CAA3C(void);
 
 extern const u32 gPokenavOptions_Gfx[];
@@ -987,3 +992,286 @@ void sub_81CA474(struct Sprite * sprite)
         sprite->callback = SpriteCallbackDummy;
     }
 }
+
+void sub_81CA4AC(struct Sprite * sprite)
+{
+    s32 r0;
+    s32 r1;
+    if (sprite->data[0] == 0)
+    {
+        if (sprite->data[1] == 0)
+        {
+            StartSpriteAffineAnim(sprite, 1);
+            sprite->data[1]++;
+            sprite->data[2] = 0x100;
+            sprite->pos1.x += sprite->pos2.x;
+            sprite->pos2.x = 0;
+        }
+        else
+        {
+            sprite->data[2] += 16;
+            r0 = sprite->data[2];
+            r1 = r0 >> 3;
+            r1 = (r1 - 32) / 2;
+            switch (sprite->data[7])
+            {
+            case 0:
+                sprite->pos2.x = -r1 * 3;
+                break;
+            case 1:
+                sprite->pos2.x = -r1;
+                break;
+            case 2:
+                sprite->pos2.x = r1;
+                break;
+            case 3:
+                sprite->pos2.x = r1 * 3;
+                break;
+            }
+            if (sprite->affineAnimEnded)
+            {
+                sprite->invisible = TRUE;
+                FreeOamMatrix(sprite->oam.matrixNum);
+                CalcCenterToCornerVec(sprite, sprite->oam.shape, sprite->oam.size, 0);
+                sprite->oam.affineMode = ST_OAM_AFFINE_OFF;
+                sprite->oam.objMode = ST_OAM_OBJ_NORMAL;
+                sprite->callback = SpriteCallbackDummy;
+            }
+        }
+    }
+    else
+    {
+        sprite->data[0]--;
+    }
+}
+
+void sub_81CA580(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+
+    if (data[0] == 0)
+    {
+        switch (data[1])
+        {
+        case 0:
+            data[2] = 16;
+            data[3] = 0;
+            SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_NONE | BLDCNT_TGT2_ALL);
+            SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0x10, 0x00));
+            data[1]++;
+            break;
+        case 1:
+            if (data[4] & 1)
+            {
+                data[2] -= 3;
+                if (data[2] < 0)
+                    data[2] = 0;
+            }
+            else
+            {
+                data[3] += 3;
+                if (data[3] > 16)
+                    data[3] = 16;
+            }
+            SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(data[2], data[3]));
+            data[4]++;
+            if (data[4] == 12)
+            {
+                ((struct Pokenav2Struct *)GetSubstructPtr(2))->field_00c--;
+                SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0x00, 0x10));
+                DestroyTask(taskId);
+            }
+            break;
+        }
+    }
+    else
+        data[0]--;
+}
+
+void sub_81CA640(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    u8 spriteId = CreateSprite(&gUnknown_0862036C, 0x10, 0x60, 4);
+    ptr->field_028 = &gSprites[spriteId];
+    if (sub_81C98D4())
+        ptr->field_028->callback = sub_81CA6AC;
+    else
+        ptr->field_028->invisible = TRUE;
+}
+
+void sub_81CA698(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    DestroySprite(ptr->field_028);
+}
+
+void sub_81CA6AC(struct Sprite * sprite)
+{
+    sprite->data[0]++;
+    if (sprite->data[0] > 8)
+    {
+        sprite->data[0] = 0;
+        sprite->invisible ^= 1;
+    }
+}
+
+void sub_81CA6E0(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+
+    ptr->field_008 = AddWindow(&gUnknown_086202CC);
+    PutWindowTilemap(ptr->field_008);
+    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
+    CopyWindowToVram(ptr->field_008, 3);
+}
+
+void sub_81CA714(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    int i = sub_81C98B4();
+    const u8 * s = gUnknown_086202D4[i];
+    u32 width = GetStringWidth(1, s, -1);
+    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
+    AddTextPrinterParameterized3(ptr->field_008, 1, (192 - width) / 2, 1, gUnknown_0862030C, 0, s);
+}
+
+
+void sub_81CA770(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    const u8 * s = gText_NoRibbonWinners;
+    u32 width = GetStringWidth(1, s, -1);
+    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
+    AddTextPrinterParameterized3(ptr->field_008, 1, (192 - width) / 2, 1, gUnknown_0862030F, 0, s);
+}
+
+bool32 sub_81CA7C4(void)
+{
+    return IsDma3ManagerBusyWithBgCopy();
+}
+
+void sub_81CA7D4(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    ptr->field_00a = CreateTask(sub_81CA808, 2);
+}
+
+void sub_81CA7F4(void)
+{
+    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
+    DestroyTask(ptr->field_00a);
+}
+
+void sub_81CA808(u8 taskId)
+{
+    ChangeBgX(3, 0x80, 1);
+}
+
+void sub_81CA818(void)
+{
+    u8 taskId = CreateTask(sub_81CA8B0, 3);
+    SetWordTaskArg(taskId, 1, (uintptr_t)(gUnknown_0861FC78 + 1));
+    SetWordTaskArg(taskId, 3, (uintptr_t)(gUnknown_0861FC78 + 7));
+}
+
+void sub_81CA850(void)
+{
+    CopyPaletteIntoBufferUnfaded(gUnknown_0861FC78 + 7, 0x31, 4);
+}
+
+void sub_81CA864(void)
+{
+    u8 taskId = CreateTask(sub_81CA8B0, 3);
+    SetWordTaskArg(taskId, 1, (uintptr_t)(gUnknown_0861FC78 + 7));
+    SetWordTaskArg(taskId, 3, (uintptr_t)(gUnknown_0861FC78 + 1));
+}
+
+bool32 sub_81CA89C(void)
+{
+    return FuncIsActiveTask(sub_81CA8B0);
+}
+
+void sub_81CA8B0(u8 taskId)
+{
+    u16 sp8[2];
+    s16 * data = gTasks[taskId].data;
+    const u16 * pal1 = (const u16 *)GetWordTaskArg(taskId, 1);
+    const u16 * pal2 = (const u16 *)GetWordTaskArg(taskId, 3);
+
+    sub_81C79BC(pal1, pal2, 2, 12, ++data[0], sp8);
+    LoadPalette(sp8, 0x31, 4);
+    if (data[0] == 12)
+        DestroyTask(taskId);
+}
+
+void sub_81CA914(void)
+{
+    TransferPlttBuffer();
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    ScanlineEffect_InitHBlankDmaTransfer();
+}
+
+void titlescreen_0(void) // almost definitely the wrong name
+{
+    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_OBJ | BLDCNT_EFFECT_LIGHTEN);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    SetGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON);
+    SetGpuRegBits(REG_OFFSET_WININ, 0x3F);
+    SetGpuRegBits(REG_OFFSET_WINOUT, 0x1F);
+    SetGpuRegBits(REG_OFFSET_WIN0V, 0xA0);
+    ScanlineEffect_Stop();
+    sub_81CAA3C();
+    ScanlineEffect_SetParams(gUnknown_08620384);
+    SetVBlankCallback_(sub_81CA914);
+    CreateTask(sub_81CA9EC, 3);
+}
+
+void sub_81CA994(void)
+{
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    ClearGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON);
+    ScanlineEffect_Stop();
+    DestroyTask(FindTaskIdByFunc(sub_81CA9EC));
+    SetPokenavVBlankCallback();
+}
+
+void sub_81CA9C8(void)
+{
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+}
+
+void sub_81CA9D8(void)
+{
+    sub_81CAA3C();
+    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_OBJ | BLDCNT_EFFECT_LIGHTEN);
+}
+
+void sub_81CA9EC(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    data[0]++;
+    if (data[0] > 0)
+    {
+        data[0] = 0;
+        data[1] += 3;
+        data[1] &= 0x7F;
+        SetGpuReg(REG_OFFSET_BLDY, gSineTable[data[1]] >> 5);
+    }
+}
+
+void sub_81CAA3C(void)
+{
+    int i = sub_81C9894();
+    int j = sub_81C98A4();
+    int r4 = gUnknown_08620240[i].unk2 * j + gUnknown_08620240[i].unk0 - 8;
+    CpuFill16(0, gScanlineEffectRegBuffers[0], 0x140);
+    CpuFill16(0, gScanlineEffectRegBuffers[1], 0x140);
+    CpuFill16(0x72F0, &gScanlineEffectRegBuffers[0][r4], 0x20);
+    CpuFill16(0x72F0, &gScanlineEffectRegBuffers[1][r4], 0x20);
+}
+
+void sub_81CAADC(void)
+{
+    sub_81CA9C8();
+}