decompile field_screen_effect and unknown_task

7 files changed, 599 insertions, 1457 deletions

diff --git a/asm/field_screen_effect.s b/asm/field_screen_effect.s
deleted file mode 100644
index 4fbfae1a2..000000000
--- a/asm/field_screen_effect.s
+++ /dev/null
@@ -1,789 +0,0 @@
-	.include "constants/gba_constants.inc"
-	.include "constants/species_constants.inc"
-	.include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_808136C
-sub_808136C: @ 808136C
-	push {lr}
-	cmp r1, 0xA0
-	bhi _08081394
-	cmp r2, 0
-	bge _08081378
-	movs r2, 0
-_08081378:
-	cmp r2, 0xFF
-	ble _0808137E
-	movs r2, 0xFF
-_0808137E:
-	cmp r3, 0
-	bge _08081384
-	movs r3, 0
-_08081384:
-	cmp r3, 0xFF
-	ble _0808138A
-	movs r3, 0xFF
-_0808138A:
-	lsls r1, 1
-	adds r1, r0
-	lsls r0, r2, 8
-	orrs r0, r3
-	strh r0, [r1]
-_08081394:
-	pop {r0}
-	bx r0
-	thumb_func_end sub_808136C
-
-	thumb_func_start sub_8081398
-sub_8081398: @ 8081398
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	str r0, [sp]
-	mov r10, r1
-	mov r9, r2
-	adds r6, r3, 0
-	mov r8, r6
-	movs r7, 0
-	cmp r6, 0
-	blt _08081414
-_080813B4:
-	mov r0, r9
-	subs r1, r0, r7
-	mov r0, r10
-	subs r4, r0, r6
-	adds r5, r0, r6
-	ldr r0, [sp]
-	adds r2, r4, 0
-	adds r3, r5, 0
-	bl sub_808136C
-	mov r0, r9
-	adds r1, r0, r7
-	ldr r0, [sp]
-	adds r2, r4, 0
-	adds r3, r5, 0
-	bl sub_808136C
-	mov r0, r9
-	subs r1, r0, r6
-	mov r0, r10
-	subs r4, r0, r7
-	adds r5, r0, r7
-	ldr r0, [sp]
-	adds r2, r4, 0
-	adds r3, r5, 0
-	bl sub_808136C
-	mov r0, r9
-	adds r1, r0, r6
-	ldr r0, [sp]
-	adds r2, r4, 0
-	adds r3, r5, 0
-	bl sub_808136C
-	mov r1, r8
-	adds r1, 0x1
-	lsls r0, r7, 1
-	subs r1, r0
-	mov r8, r1
-	adds r7, 0x1
-	cmp r1, 0
-	bge _08081410
-	subs r1, r6, 0x1
-	lsls r0, r1, 1
-	add r8, r0
-	adds r6, r1, 0
-_08081410:
-	cmp r6, r7
-	bge _080813B4
-_08081414:
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8081398
-
-	thumb_func_start sub_8081424
-sub_8081424: @ 8081424
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	ldr r1, _08081448 @ =gTasks + 0x8
-	adds r4, r0, r1
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x1
-	beq _08081480
-	cmp r0, 0x1
-	bgt _0808144C
-	cmp r0, 0
-	beq _08081452
-	b _080814E2
-	.align 2, 0
-_08081448: .4byte gTasks + 0x8
-_0808144C:
-	cmp r0, 0x2
-	beq _080814D8
-	b _080814E2
-_08081452:
-	ldr r0, _08081478 @ =gUnknown_03004DC0
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	ldr r1, _0808147C @ =gUnknown_03004DE0
-	adds r0, r1
-	movs r2, 0x2
-	ldrsh r1, [r4, r2]
-	movs r3, 0x4
-	ldrsh r2, [r4, r3]
-	movs r5, 0x6
-	ldrsh r3, [r4, r5]
-	bl sub_8081398
-	movs r0, 0x1
-	strh r0, [r4]
-	b _080814E2
-	.align 2, 0
-_08081478: .4byte gUnknown_03004DC0
-_0808147C: .4byte gUnknown_03004DE0
-_08081480:
-	ldr r0, _080814C8 @ =gUnknown_03004DC0
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	ldr r1, _080814CC @ =gUnknown_03004DE0
-	adds r0, r1
-	movs r6, 0x2
-	ldrsh r1, [r4, r6]
-	movs r3, 0x4
-	ldrsh r2, [r4, r3]
-	movs r6, 0x6
-	ldrsh r3, [r4, r6]
-	bl sub_8081398
-	movs r0, 0
-	strh r0, [r4]
-	ldrh r0, [r4, 0xA]
-	ldrh r1, [r4, 0x6]
-	adds r0, r1
-	strh r0, [r4, 0x6]
-	lsls r0, 16
-	asrs r0, 16
-	movs r2, 0x8
-	ldrsh r1, [r4, r2]
-	cmp r0, r1
-	ble _080814E2
-	movs r3, 0xC
-	ldrsh r0, [r4, r3]
-	cmp r0, 0x1
-	bne _080814D0
-	bl remove_some_task
-	movs r0, 0x2
-	strh r0, [r4]
-	b _080814E2
-	.align 2, 0
-_080814C8: .4byte gUnknown_03004DC0
-_080814CC: .4byte gUnknown_03004DE0
-_080814D0:
-	adds r0, r5, 0
-	bl DestroyTask
-	b _080814E2
-_080814D8:
-	bl dp12_8087EA4
-	adds r0, r5, 0
-	bl DestroyTask
-_080814E2:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8081424
-
-	thumb_func_start sub_80814E8
-sub_80814E8: @ 80814E8
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _0808150C @ =sub_8081424
-	bl FuncIsActiveTask
-	lsls r0, 24
-	cmp r0, 0
-	bne _08081504
-	bl EnableBothScriptContexts
-	adds r0, r4, 0
-	bl DestroyTask
-_08081504:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0808150C: .4byte sub_8081424
-	thumb_func_end sub_80814E8
-
-	thumb_func_start sub_8081510
-sub_8081510: @ 8081510
-	push {r4,lr}
-	ldr r4, _08081530 @ =sub_80814E8
-	adds r0, r4, 0
-	bl FuncIsActiveTask
-	lsls r0, 24
-	cmp r0, 0
-	bne _08081528
-	adds r0, r4, 0
-	movs r1, 0x50
-	bl CreateTask
-_08081528:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08081530: .4byte sub_80814E8
-	thumb_func_end sub_8081510
-
-	thumb_func_start sub_8081534
-sub_8081534: @ 8081534
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	mov r8, r0
-	mov r9, r1
-	adds r5, r2, 0
-	adds r4, r3, 0
-	ldr r6, [sp, 0x1C]
-	ldr r0, [sp, 0x20]
-	lsls r0, 24
-	lsrs r7, r0, 24
-	ldr r0, _08081578 @ =sub_8081424
-	movs r1, 0x50
-	bl CreateTask
-	lsls r0, 24
-	lsrs r2, r0, 24
-	lsls r0, r2, 2
-	adds r0, r2
-	lsls r0, 3
-	ldr r1, _0808157C @ =gTasks + 0x8
-	adds r1, r0, r1
-	strh r5, [r1, 0x6]
-	strh r4, [r1, 0x8]
-	mov r0, r8
-	strh r0, [r1, 0x2]
-	mov r0, r9
-	strh r0, [r1, 0x4]
-	strh r6, [r1, 0xC]
-	cmp r5, r4
-	bge _08081580
-	strh r7, [r1, 0xA]
-	b _08081584
-	.align 2, 0
-_08081578: .4byte sub_8081424
-_0808157C: .4byte gTasks + 0x8
-_08081580:
-	negs r0, r7
-	strh r0, [r1, 0xA]
-_08081584:
-	adds r0, r2, 0
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8081534
-
-	thumb_func_start sub_8081594
-sub_8081594: @ 8081594
-	push {r4,r5,lr}
-	sub sp, 0x8
-	lsls r0, 24
-	lsrs r0, 24
-	adds r4, r0, 0
-	bl sav1_get_flash_used_on_map
-	lsls r0, 24
-	lsrs r0, 24
-	movs r5, 0
-	cmp r4, 0
-	bne _080815AE
-	movs r5, 0x1
-_080815AE:
-	ldr r1, _080815DC @ =gUnknown_0839ACDC
-	lsls r0, 1
-	adds r0, r1
-	ldrh r2, [r0]
-	lsls r0, r4, 1
-	adds r0, r1
-	ldrh r3, [r0]
-	str r5, [sp]
-	movs r0, 0x1
-	str r0, [sp, 0x4]
-	movs r0, 0x78
-	movs r1, 0x50
-	bl sub_8081534
-	bl sub_8081510
-	bl ScriptContext2_Enable
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080815DC: .4byte gUnknown_0839ACDC
-	thumb_func_end sub_8081594
-
-	thumb_func_start sub_80815E0
-sub_80815E0: @ 80815E0
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0
-	beq _0808160E
-	ldr r4, _08081614 @ =gUnknown_03004DE0
-	ldr r1, _08081618 @ =gUnknown_0839ACDC
-	lsls r0, 1
-	adds r0, r1
-	ldrh r3, [r0]
-	adds r0, r4, 0
-	movs r1, 0x78
-	movs r2, 0x50
-	bl sub_8081398
-	movs r0, 0xF0
-	lsls r0, 3
-	adds r1, r4, r0
-	movs r2, 0xF0
-	lsls r2, 1
-	adds r0, r4, 0
-	bl CpuFastSet
-_0808160E:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08081614: .4byte gUnknown_03004DE0
-_08081618: .4byte gUnknown_0839ACDC
-	thumb_func_end sub_80815E0
-
-	thumb_func_start sub_808161C
-sub_808161C: @ 808161C
-	push {r4,r5,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	cmp r0, 0
-	bne _0808162A
-	movs r1, 0x1F
-	b _08081630
-_0808162A:
-	movs r0, 0xF8
-	lsls r0, 7
-	adds r1, r0, 0
-_08081630:
-	mov r0, sp
-	strh r1, [r0]
-	movs r5, 0
-	movs r4, 0xF0
-	lsls r4, 16
-_0808163A:
-	lsrs r1, r4, 16
-	mov r0, sp
-	movs r2, 0x2
-	bl LoadPalette
-	movs r0, 0x80
-	lsls r0, 9
-	adds r4, r0
-	adds r5, 0x1
-	cmp r5, 0xF
-	ble _0808163A
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_808161C
-
-	thumb_func_start sub_8081658
-sub_8081658: @ 8081658
-	push {lr}
-	lsls r0, 16
-	ldr r2, _08081678 @ =REG_BLDALPHA
-	ldrh r1, [r2]
-	lsls r1, 24
-	lsrs r3, r1, 24
-	ldrh r1, [r2]
-	lsrs r2, r1, 8
-	cmp r0, 0
-	beq _0808167C
-	cmp r3, 0
-	beq _08081686
-	subs r0, r3, 0x1
-	lsls r0, 24
-	lsrs r3, r0, 24
-	b _08081686
-	.align 2, 0
-_08081678: .4byte REG_BLDALPHA
-_0808167C:
-	cmp r2, 0xF
-	bhi _08081686
-	adds r0, r2, 0x1
-	lsls r0, 24
-	lsrs r2, r0, 24
-_08081686:
-	ldr r1, _0808169C @ =REG_BLDALPHA
-	lsls r0, r2, 8
-	orrs r0, r3
-	strh r0, [r1]
-	cmp r3, 0
-	bne _080816A0
-	cmp r2, 0x10
-	bne _080816A0
-	movs r0, 0x1
-	b _080816A2
-	.align 2, 0
-_0808169C: .4byte REG_BLDALPHA
-_080816A0:
-	movs r0, 0
-_080816A2:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8081658
-
-	thumb_func_start sub_80816A8
-sub_80816A8: @ 80816A8
-	push {r4-r7,lr}
-	sub sp, 0x8
-	lsls r0, 24
-	lsrs r4, r0, 24
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	ldr r1, _080816D0 @ =gTasks + 0x8
-	adds r7, r0, r1
-	movs r1, 0
-	ldrsh r0, [r7, r1]
-	cmp r0, 0x7
-	bls _080816C4
-	b _08081892
-_080816C4:
-	lsls r0, 2
-	ldr r1, _080816D4 @ =_080816D8
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080816D0: .4byte gTasks + 0x8
-_080816D4: .4byte _080816D8
-	.align 2, 0
-_080816D8:
-	.4byte _080816F8
-	.4byte _08081790
-	.4byte _080817BC
-	.4byte _080817D8
-	.4byte _080817EE
-	.4byte _08081852
-	.4byte _08081818
-	.4byte _08081826
-_080816F8:
-	movs r2, 0x80
-	lsls r2, 19
-	ldrh r0, [r2]
-	strh r0, [r7, 0xC]
-	ldr r3, _0808176C @ =REG_BLDCNT
-	ldrh r0, [r3]
-	strh r0, [r7, 0xE]
-	ldr r6, _08081770 @ =REG_BLDALPHA
-	ldrh r0, [r6]
-	strh r0, [r7, 0x10]
-	ldr r5, _08081774 @ =REG_WININ
-	ldrh r0, [r5]
-	strh r0, [r7, 0x12]
-	ldr r4, _08081778 @ =REG_WINOUT
-	ldrh r0, [r4]
-	strh r0, [r7, 0x14]
-	ldrh r1, [r2]
-	ldr r0, _0808177C @ =0x0000bfff
-	ands r0, r1
-	strh r0, [r2]
-	ldr r1, _08081780 @ =gUnknown_081E29E8
-	ldrh r0, [r3]
-	ldrh r1, [r1]
-	orrs r0, r1
-	strh r0, [r3]
-	ldr r2, _08081784 @ =0x0000070c
-	adds r0, r2, 0
-	strh r0, [r6]
-	movs r0, 0x3F
-	strh r0, [r5]
-	movs r0, 0x1E
-	strh r0, [r4]
-	ldr r4, _08081788 @ =gUnknown_03004DE0
-	movs r0, 0x4
-	ldrsh r1, [r7, r0]
-	movs r0, 0x6
-	ldrsh r2, [r7, r0]
-	adds r0, r4, 0
-	movs r3, 0x1
-	bl sub_8081398
-	movs r2, 0xF0
-	lsls r2, 3
-	adds r1, r4, r2
-	movs r2, 0xF0
-	lsls r2, 1
-	adds r0, r4, 0
-	bl CpuFastSet
-	ldr r2, _0808178C @ =gUnknown_0839ACEC
-	ldr r0, [r2]
-	ldr r1, [r2, 0x4]
-	ldr r2, [r2, 0x8]
-	bl sub_80895F8
-	movs r0, 0x1
-	strh r0, [r7]
-	b _08081892
-	.align 2, 0
-_0808176C: .4byte REG_BLDCNT
-_08081770: .4byte REG_BLDALPHA
-_08081774: .4byte REG_WININ
-_08081778: .4byte REG_WINOUT
-_0808177C: .4byte 0x0000bfff
-_08081780: .4byte gUnknown_081E29E8
-_08081784: .4byte 0x0000070c
-_08081788: .4byte gUnknown_03004DE0
-_0808178C: .4byte gUnknown_0839ACEC
-_08081790:
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0x1D
-	movs r3, 0x13
-	bl MenuFillWindowRectWithBlankTile
-	ldrb r0, [r7, 0x2]
-	bl sub_808161C
-	movs r1, 0x4
-	ldrsh r0, [r7, r1]
-	movs r2, 0x6
-	ldrsh r1, [r7, r2]
-	movs r2, 0x1
-	str r2, [sp]
-	movs r4, 0x2
-	str r4, [sp, 0x4]
-	movs r3, 0xA0
-	bl sub_8081534
-	strh r4, [r7]
-	b _08081892
-_080817BC:
-	ldr r0, _080817D4 @ =sub_8081424
-	bl FuncIsActiveTask
-	lsls r0, 24
-	cmp r0, 0
-	bne _08081892
-	bl EnableBothScriptContexts
-	movs r0, 0x3
-	strh r0, [r7]
-	b _08081892
-	.align 2, 0
-_080817D4: .4byte sub_8081424
-_080817D8:
-	bl InstallCameraPanAheadCallback
-	movs r0, 0
-	bl SetCameraPanningCallback
-	movs r0, 0
-	strh r0, [r7, 0xA]
-	movs r0, 0x4
-	strh r0, [r7, 0x8]
-	strh r0, [r7]
-	b _08081892
-_080817EE:
-	ldrh r0, [r7, 0x8]
-	subs r0, 0x1
-	strh r0, [r7, 0x8]
-	lsls r0, 16
-	cmp r0, 0
-	bne _08081892
-	movs r0, 0x4
-	strh r0, [r7, 0x8]
-	ldrh r0, [r7, 0xA]
-	movs r1, 0x1
-	eors r0, r1
-	strh r0, [r7, 0xA]
-	movs r1, 0x4
-	negs r1, r1
-	cmp r0, 0
-	beq _08081810
-	movs r1, 0x4
-_08081810:
-	movs r0, 0
-	bl SetCameraPanning
-	b _08081892
-_08081818:
-	bl InstallCameraPanAheadCallback
-	movs r0, 0x8
-	strh r0, [r7, 0x8]
-	movs r0, 0x7
-	strh r0, [r7]
-	b _08081892
-_08081826:
-	ldrh r0, [r7, 0x8]
-	subs r0, 0x1
-	strh r0, [r7, 0x8]
-	lsls r0, 16
-	cmp r0, 0
-	bne _08081892
-	movs r0, 0x8
-	strh r0, [r7, 0x8]
-	ldrh r0, [r7, 0xA]
-	movs r1, 0x1
-	eors r0, r1
-	strh r0, [r7, 0xA]
-	ldrh r0, [r7, 0xA]
-	bl sub_8081658
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08081892
-	movs r0, 0x5
-	strh r0, [r7]
-	b _08081892
-_08081852:
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0x1D
-	movs r3, 0x13
-	bl MenuZeroFillWindowRect
-	ldr r0, _0808189C @ =gWindowConfig_81E6CE4
-	bl LoadFontDefaultPalette
-	ldr r1, _080818A0 @ =REG_WIN0H
-	movs r0, 0xFF
-	strh r0, [r1]
-	subs r1, 0x40
-	ldrh r0, [r7, 0xC]
-	strh r0, [r1]
-	adds r1, 0x50
-	ldrh r0, [r7, 0xE]
-	strh r0, [r1]
-	adds r1, 0x2
-	ldrh r0, [r7, 0x10]
-	strh r0, [r1]
-	subs r1, 0xA
-	ldrh r0, [r7, 0x12]
-	strh r0, [r1]
-	adds r1, 0x2
-	ldrh r0, [r7, 0x14]
-	strh r0, [r1]
-	bl EnableBothScriptContexts
-	adds r0, r4, 0
-	bl DestroyTask
-_08081892:
-	add sp, 0x8
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0808189C: .4byte gWindowConfig_81E6CE4
-_080818A0: .4byte REG_WIN0H
-	thumb_func_end sub_80816A8
-
-	thumb_func_start sub_80818A4
-sub_80818A4: @ 80818A4
-	push {lr}
-	ldr r0, _080818CC @ =sub_80816A8
-	movs r1, 0x50
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, _080818D0 @ =gTasks + 0x8
-	adds r1, r0
-	ldr r0, _080818D4 @ =gScriptResult
-	ldrh r0, [r0]
-	cmp r0, 0
-	bne _080818D8
-	strh r0, [r1, 0x2]
-	movs r0, 0x68
-	b _080818F0
-	.align 2, 0
-_080818CC: .4byte sub_80816A8
-_080818D0: .4byte gTasks + 0x8
-_080818D4: .4byte gScriptResult
-_080818D8:
-	cmp r0, 0x1
-	bne _080818E2
-	strh r0, [r1, 0x2]
-	movs r0, 0x68
-	b _080818F0
-_080818E2:
-	cmp r0, 0x2
-	bne _080818EA
-	movs r0, 0
-	b _080818EC
-_080818EA:
-	movs r0, 0x1
-_080818EC:
-	strh r0, [r1, 0x2]
-	movs r0, 0x78
-_080818F0:
-	strh r0, [r1, 0x4]
-	movs r0, 0x50
-	strh r0, [r1, 0x6]
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80818A4
-
-	thumb_func_start sub_80818FC
-sub_80818FC: @ 80818FC
-	push {lr}
-	ldr r0, _0808191C @ =sub_80816A8
-	bl FindTaskIdByFunc
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _08081920 @ =gTasks
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	adds r1, r2
-	movs r0, 0x6
-	strh r0, [r1, 0x8]
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0808191C: .4byte sub_80816A8
-_08081920: .4byte gTasks
-	thumb_func_end sub_80818FC
-
-	thumb_func_start sub_8081924
-sub_8081924: @ 8081924
-	push {lr}
-	bl sub_8054044
-	ldr r0, _08081938 @ =task50_0807F0C8
-	movs r1, 0x50
-	bl CreateTask
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08081938: .4byte task50_0807F0C8
-	thumb_func_end sub_8081924
-
-	thumb_func_start task50_0807F0C8
-task50_0807F0C8: @ 808193C
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	bl sub_8054034
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08081958
-	adds r0, r4, 0
-	bl DestroyTask
-	bl EnableBothScriptContexts
-_08081958:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end task50_0807F0C8
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/unknown_task.s b/asm/unknown_task.s
deleted file mode 100644
index 39f1497ef..000000000
--- a/asm/unknown_task.s
+++ /dev/null
@@ -1,645 +0,0 @@
-	.include "constants/gba_constants.inc"
-	.include "constants/species_constants.inc"
-	.include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start remove_some_task
-remove_some_task: @ 8089578
-	push {r4,lr}
-	ldr r4, _080895A8 @ =gUnknown_03004DC0
-	movs r0, 0
-	strb r0, [r4, 0x15]
-	ldr r1, _080895AC @ =0x040000b0
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080895B0 @ =0x0000c5ff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080895B4 @ =0x00007fff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r0, [r1, 0xA]
-	ldrb r0, [r4, 0x18]
-	cmp r0, 0xFF
-	beq _080895A2
-	bl DestroyTask
-	movs r0, 0xFF
-	strb r0, [r4, 0x18]
-_080895A2:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080895A8: .4byte gUnknown_03004DC0
-_080895AC: .4byte 0x040000b0
-_080895B0: .4byte 0x0000c5ff
-_080895B4: .4byte 0x00007fff
-	thumb_func_end remove_some_task
-
-	thumb_func_start dp12_8087EA4
-dp12_8087EA4: @ 80895B8
-	push {r4,lr}
-	sub sp, 0x4
-	mov r0, sp
-	movs r4, 0
-	strh r4, [r0]
-	ldr r1, _080895EC @ =gUnknown_03004DE0
-	ldr r2, _080895F0 @ =0x01000780
-	bl CpuSet
-	ldr r0, _080895F4 @ =gUnknown_03004DC0
-	movs r1, 0
-	str r1, [r0]
-	str r1, [r0, 0x4]
-	str r1, [r0, 0x8]
-	str r1, [r0, 0xC]
-	strb r4, [r0, 0x14]
-	strb r4, [r0, 0x15]
-	strb r4, [r0, 0x16]
-	strb r4, [r0, 0x17]
-	movs r1, 0xFF
-	strb r1, [r0, 0x18]
-	add sp, 0x4
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080895EC: .4byte gUnknown_03004DE0
-_080895F0: .4byte 0x01000780
-_080895F4: .4byte gUnknown_03004DC0
-	thumb_func_end dp12_8087EA4
-
-	thumb_func_start sub_80895F8
-sub_80895F8: @ 80895F8
-	push {lr}
-	sub sp, 0xC
-	str r0, [sp]
-	str r1, [sp, 0x4]
-	str r2, [sp, 0x8]
-	ldr r0, _0808961C @ =0xa2600001
-	cmp r1, r0
-	bne _0808962C
-	ldr r0, _08089620 @ =gUnknown_03004DC0
-	ldr r1, _08089624 @ =gUnknown_03004DE2
-	str r1, [r0]
-	movs r2, 0xF0
-	lsls r2, 3
-	adds r1, r2
-	str r1, [r0, 0x4]
-	ldr r1, _08089628 @ =sub_80896F4
-	b _0808963C
-	.align 2, 0
-_0808961C: .4byte 0xa2600001
-_08089620: .4byte gUnknown_03004DC0
-_08089624: .4byte gUnknown_03004DE2
-_08089628: .4byte sub_80896F4
-_0808962C:
-	ldr r0, _0808965C @ =gUnknown_03004DC0
-	ldr r1, _08089660 @ =gUnknown_03004DE4
-	str r1, [r0]
-	movs r2, 0xF0
-	lsls r2, 3
-	adds r1, r2
-	str r1, [r0, 0x4]
-	ldr r1, _08089664 @ =sub_8089714
-_0808963C:
-	str r1, [r0, 0x10]
-	adds r1, r0, 0
-	ldr r0, [sp, 0x4]
-	str r0, [r1, 0xC]
-	ldr r0, [sp]
-	str r0, [r1, 0x8]
-	mov r0, sp
-	ldrb r0, [r0, 0x8]
-	strb r0, [r1, 0x15]
-	mov r0, sp
-	ldrb r0, [r0, 0x9]
-	strb r0, [r1, 0x16]
-	strb r0, [r1, 0x17]
-	add sp, 0xC
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0808965C: .4byte gUnknown_03004DC0
-_08089660: .4byte gUnknown_03004DE4
-_08089664: .4byte sub_8089714
-	thumb_func_end sub_80895F8
-
-	thumb_func_start sub_8089668
-sub_8089668: @ 8089668
-	push {r4,lr}
-	ldr r4, _08089698 @ =gUnknown_03004DC0
-	ldrb r0, [r4, 0x15]
-	cmp r0, 0
-	beq _080896E2
-	cmp r0, 0x3
-	bne _080896AC
-	movs r0, 0
-	strb r0, [r4, 0x15]
-	ldr r1, _0808969C @ =0x040000b0
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080896A0 @ =0x0000c5ff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080896A4 @ =0x00007fff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r0, [r1, 0xA]
-	ldr r1, _080896A8 @ =gUnknown_0202FFA4
-	movs r0, 0x1
-	strb r0, [r1]
-	b _080896E2
-	.align 2, 0
-_08089698: .4byte gUnknown_03004DC0
-_0808969C: .4byte 0x040000b0
-_080896A0: .4byte 0x0000c5ff
-_080896A4: .4byte 0x00007fff
-_080896A8: .4byte gUnknown_0202FFA4
-_080896AC:
-	ldr r1, _080896E8 @ =0x040000b0
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080896EC @ =0x0000c5ff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r2, [r1, 0xA]
-	ldr r0, _080896F0 @ =0x00007fff
-	ands r0, r2
-	strh r0, [r1, 0xA]
-	ldrh r0, [r1, 0xA]
-	ldrb r0, [r4, 0x14]
-	lsls r0, 2
-	adds r0, r4
-	ldr r0, [r0]
-	str r0, [r1]
-	ldr r0, [r4, 0x8]
-	str r0, [r1, 0x4]
-	ldr r0, [r4, 0xC]
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	ldr r0, [r4, 0x10]
-	bl _call_via_r0
-	ldrb r0, [r4, 0x14]
-	movs r1, 0x1
-	eors r0, r1
-	strb r0, [r4, 0x14]
-_080896E2:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080896E8: .4byte 0x040000b0
-_080896EC: .4byte 0x0000c5ff
-_080896F0: .4byte 0x00007fff
-	thumb_func_end sub_8089668
-
-	thumb_func_start sub_80896F4
-sub_80896F4: @ 80896F4
-	ldr r0, _0808970C @ =gUnknown_03004DC0
-	ldr r2, [r0, 0x8]
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	ldr r1, _08089710 @ =gUnknown_03004DE0
-	adds r0, r1
-	ldrh r0, [r0]
-	strh r0, [r2]
-	bx lr
-	.align 2, 0
-_0808970C: .4byte gUnknown_03004DC0
-_08089710: .4byte gUnknown_03004DE0
-	thumb_func_end sub_80896F4
-
-	thumb_func_start sub_8089714
-sub_8089714: @ 8089714
-	ldr r0, _0808972C @ =gUnknown_03004DC0
-	ldr r2, [r0, 0x8]
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	ldr r1, _08089730 @ =gUnknown_03004DE0
-	adds r0, r1
-	ldr r0, [r0]
-	str r0, [r2]
-	bx lr
-	.align 2, 0
-_0808972C: .4byte gUnknown_03004DC0
-_08089730: .4byte gUnknown_03004DE0
-	thumb_func_end sub_8089714
-
-	thumb_func_start task00_for_dp12
-task00_for_dp12: @ 8089734
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	lsls r0, 24
-	lsrs r0, 24
-	mov r12, r0
-	movs r6, 0
-	ldr r0, _0808975C @ =gUnknown_0202FFA4
-	ldrb r0, [r0]
-	cmp r0, 0
-	beq _08089764
-	mov r0, r12
-	bl DestroyTask
-	ldr r1, _08089760 @ =gUnknown_03004DC0
-	movs r0, 0xFF
-	strb r0, [r1, 0x18]
-	b _080898E4
-	.align 2, 0
-_0808975C: .4byte gUnknown_0202FFA4
-_08089760: .4byte gUnknown_03004DC0
-_08089764:
-	ldr r1, _08089790 @ =gTasks
-	mov r0, r12
-	lsls r2, r0, 2
-	adds r0, r2, r0
-	lsls r0, 3
-	adds r3, r0, r1
-	movs r4, 0x16
-	ldrsh r0, [r3, r4]
-	mov r10, r1
-	mov r9, r2
-	cmp r0, 0
-	beq _08089810
-	movs r1, 0x14
-	ldrsh r0, [r3, r1]
-	cmp r0, 0xE
-	bhi _08089810
-	lsls r0, 2
-	ldr r1, _08089794 @ =_08089798
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_08089790: .4byte gTasks
-_08089794: .4byte _08089798
-	.align 2, 0
-_08089798:
-	.4byte _080897D4
-	.4byte _08089810
-	.4byte _080897DC
-	.4byte _08089810
-	.4byte _080897E4
-	.4byte _08089810
-	.4byte _080897EC
-	.4byte _08089810
-	.4byte _080897F4
-	.4byte _08089810
-	.4byte _080897FC
-	.4byte _08089810
-	.4byte _08089804
-	.4byte _08089810
-	.4byte _0808980C
-_080897D4:
-	ldr r0, _080897D8 @ =gUnknown_030042A4
-	b _0808980E
-	.align 2, 0
-_080897D8: .4byte gUnknown_030042A4
-_080897DC:
-	ldr r0, _080897E0 @ =gUnknown_030042A0
-	b _0808980E
-	.align 2, 0
-_080897E0: .4byte gUnknown_030042A0
-_080897E4:
-	ldr r0, _080897E8 @ =gUnknown_030042C0
-	b _0808980E
-	.align 2, 0
-_080897E8: .4byte gUnknown_030042C0
-_080897EC:
-	ldr r0, _080897F0 @ =gUnknown_030041B4
-	b _0808980E
-	.align 2, 0
-_080897F0: .4byte gUnknown_030041B4
-_080897F4:
-	ldr r0, _080897F8 @ =gUnknown_03004288
-	b _0808980E
-	.align 2, 0
-_080897F8: .4byte gUnknown_03004288
-_080897FC:
-	ldr r0, _08089800 @ =gUnknown_03004280
-	b _0808980E
-	.align 2, 0
-_08089800: .4byte gUnknown_03004280
-_08089804:
-	ldr r0, _08089808 @ =gUnknown_030041B0
-	b _0808980E
-	.align 2, 0
-_08089808: .4byte gUnknown_030041B0
-_0808980C:
-	ldr r0, _08089870 @ =gUnknown_030041B8
-_0808980E:
-	ldrh r6, [r0]
-_08089810:
-	mov r0, r9
-	add r0, r12
-	lsls r0, 3
-	mov r2, r10
-	adds r1, r0, r2
-	ldrh r2, [r1, 0x10]
-	movs r3, 0x10
-	ldrsh r0, [r1, r3]
-	cmp r0, 0
-	beq _0808987C
-	subs r0, r2, 0x1
-	strh r0, [r1, 0x10]
-	movs r4, 0xE
-	ldrsh r0, [r1, r4]
-	movs r3, 0xA0
-	lsls r3, 1
-	adds r2, r0, r3
-	movs r4, 0x8
-	ldrsh r3, [r1, r4]
-	movs r4, 0xA
-	ldrsh r0, [r1, r4]
-	cmp r3, r0
-	bge _080898E4
-	ldr r5, _08089874 @ =gUnknown_03004DE0
-	ldr r0, _08089878 @ =gUnknown_03004DC0
-	mov r8, r0
-	adds r7, r1, 0
-	lsls r0, r2, 1
-	adds r4, r0, r5
-_0808984A:
-	lsls r2, r3, 1
-	mov r0, r8
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	adds r2, r0
-	adds r2, r5
-	ldrh r0, [r4]
-	adds r0, r6
-	strh r0, [r2]
-	adds r4, 0x2
-	adds r3, 0x1
-	movs r1, 0xA
-	ldrsh r0, [r7, r1]
-	cmp r3, r0
-	blt _0808984A
-	b _080898E4
-	.align 2, 0
-_08089870: .4byte gUnknown_030041B8
-_08089874: .4byte gUnknown_03004DE0
-_08089878: .4byte gUnknown_03004DC0
-_0808987C:
-	ldrh r0, [r1, 0x12]
-	strh r0, [r1, 0x10]
-	movs r2, 0xE
-	ldrsh r0, [r1, r2]
-	movs r3, 0xA0
-	lsls r3, 1
-	adds r2, r0, r3
-	movs r4, 0x8
-	ldrsh r3, [r1, r4]
-	movs r4, 0xA
-	ldrsh r0, [r1, r4]
-	cmp r3, r0
-	bge _080898C4
-	ldr r5, _080898F4 @ =gUnknown_03004DE0
-	adds r7, r1, 0
-	lsls r0, r2, 1
-	adds r4, r0, r5
-	ldr r0, _080898F8 @ =gUnknown_03004DC0
-	mov r8, r0
-_080898A2:
-	lsls r2, r3, 1
-	mov r0, r8
-	ldrb r1, [r0, 0x14]
-	lsls r0, r1, 4
-	subs r0, r1
-	lsls r0, 7
-	adds r2, r0
-	adds r2, r5
-	ldrh r0, [r4]
-	adds r0, r6
-	strh r0, [r2]
-	adds r4, 0x2
-	adds r3, 0x1
-	movs r1, 0xA
-	ldrsh r0, [r7, r1]
-	cmp r3, r0
-	blt _080898A2
-_080898C4:
-	mov r0, r9
-	add r0, r12
-	lsls r0, 3
-	mov r3, r10
-	adds r2, r0, r3
-	ldrh r0, [r2, 0xE]
-	adds r0, 0x1
-	strh r0, [r2, 0xE]
-	lsls r0, 16
-	asrs r0, 16
-	movs r4, 0xC
-	ldrsh r1, [r2, r4]
-	cmp r0, r1
-	bne _080898E4
-	movs r0, 0
-	strh r0, [r2, 0xE]
-_080898E4:
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080898F4: .4byte gUnknown_03004DE0
-_080898F8: .4byte gUnknown_03004DC0
-	thumb_func_end task00_for_dp12
-
-	thumb_func_start sub_80898FC
-sub_80898FC: @ 80898FC
-	push {r4-r7,lr}
-	adds r6, r0, 0
-	lsls r1, 24
-	lsrs r5, r1, 24
-	lsls r2, 24
-	lsrs r4, r2, 24
-	movs r1, 0
-	movs r2, 0
-	ldr r0, _08089940 @ =gSineTable
-	mov r12, r0
-_08089910:
-	lsls r0, r1, 1
-	adds r3, r0, r6
-	lsls r0, r2, 1
-	add r0, r12
-	movs r7, 0
-	ldrsh r0, [r0, r7]
-	muls r0, r4
-	cmp r0, 0
-	bge _08089924
-	adds r0, 0xFF
-_08089924:
-	asrs r0, 8
-	strh r0, [r3]
-	adds r0, r2, r5
-	lsls r0, 24
-	lsrs r2, r0, 24
-	adds r0, r1, 0x1
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0xFF
-	bls _08089910
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08089940: .4byte gSineTable
-	thumb_func_end sub_80898FC
-
-	thumb_func_start sub_8089944
-sub_8089944: @ 8089944
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x20
-	adds r5, r0, 0
-	str r1, [sp, 0x10]
-	ldr r0, [sp, 0x40]
-	mov r8, r0
-	ldr r1, [sp, 0x44]
-	mov r9, r1
-	ldr r0, [sp, 0x48]
-	mov r10, r0
-	lsls r5, 24
-	lsrs r5, 24
-	ldr r1, [sp, 0x10]
-	lsls r1, 24
-	str r1, [sp, 0x14]
-	lsrs r0, r1, 24
-	str r0, [sp, 0xC]
-	lsls r1, r2, 24
-	lsrs r1, 24
-	str r1, [sp, 0x18]
-	lsls r2, r3, 24
-	lsrs r2, 24
-	str r2, [sp, 0x1C]
-	mov r1, r8
-	lsls r1, 24
-	lsrs r1, 24
-	mov r8, r1
-	mov r3, r9
-	lsls r3, 24
-	lsrs r3, 24
-	mov r9, r3
-	mov r0, r10
-	lsls r0, 24
-	lsrs r0, 24
-	mov r10, r0
-	bl dp12_8087EA4
-	ldr r0, _08089A50 @ =REG_BG0HOFS
-	add r0, r9
-	str r0, [sp]
-	ldr r0, _08089A54 @ =0xa2600001
-	str r0, [sp, 0x4]
-	mov r1, sp
-	movs r0, 0x1
-	strb r0, [r1, 0x8]
-	mov r0, sp
-	movs r1, 0
-	strb r1, [r0, 0x9]
-	ldr r0, [sp]
-	ldr r1, [sp, 0x4]
-	ldr r2, [sp, 0x8]
-	bl sub_80895F8
-	ldr r0, _08089A58 @ =task00_for_dp12
-	movs r1, 0
-	bl CreateTask
-	lsls r0, 24
-	lsrs r7, r0, 24
-	ldr r0, _08089A5C @ =gTasks
-	lsls r4, r7, 2
-	adds r4, r7
-	lsls r4, 3
-	adds r4, r0
-	strh r5, [r4, 0x8]
-	mov r3, sp
-	ldrh r3, [r3, 0xC]
-	strh r3, [r4, 0xA]
-	movs r0, 0x80
-	lsls r0, 1
-	ldr r1, [sp, 0x18]
-	bl __divsi3
-	strh r0, [r4, 0xC]
-	movs r0, 0
-	strh r0, [r4, 0xE]
-	mov r1, r8
-	strh r1, [r4, 0x10]
-	strh r1, [r4, 0x12]
-	mov r3, r9
-	strh r3, [r4, 0x14]
-	mov r0, r10
-	strh r0, [r4, 0x16]
-	ldr r0, _08089A60 @ =gUnknown_03004DC0
-	strb r7, [r0, 0x18]
-	ldr r0, _08089A64 @ =gUnknown_0202FFA4
-	movs r1, 0
-	strb r1, [r0]
-	ldr r4, _08089A68 @ =gUnknown_03005060
-	ldr r3, [sp, 0xC]
-	subs r6, r3, r5
-	lsls r3, r6, 24
-	lsrs r3, 24
-	adds r0, r4, 0
-	ldr r1, [sp, 0x18]
-	ldr r2, [sp, 0x1C]
-	bl sub_80898FC
-	ldr r0, [sp, 0xC]
-	cmp r5, r0
-	bge _08089A3E
-	ldr r1, _08089A6C @ =0xfffffd80
-	adds r2, r4, r1
-	lsls r1, r5, 1
-	movs r3, 0xF0
-	lsls r3, 3
-	adds r0, r1, r3
-	adds r3, r0, r2
-	adds r1, r2
-	adds r2, r4, 0
-	adds r5, r6, 0
-_08089A2A:
-	ldrh r0, [r2]
-	strh r0, [r1]
-	ldrh r0, [r2]
-	strh r0, [r3]
-	adds r2, 0x2
-	adds r3, 0x2
-	adds r1, 0x2
-	subs r5, 0x1
-	cmp r5, 0
-	bne _08089A2A
-_08089A3E:
-	adds r0, r7, 0
-	add sp, 0x20
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_08089A50: .4byte REG_BG0HOFS
-_08089A54: .4byte 0xa2600001
-_08089A58: .4byte task00_for_dp12
-_08089A5C: .4byte gTasks
-_08089A60: .4byte gUnknown_03004DC0
-_08089A64: .4byte gUnknown_0202FFA4
-_08089A68: .4byte gUnknown_03005060
-_08089A6C: .4byte 0xfffffd80
-	thumb_func_end sub_8089944
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/rom_8080874.s b/data/rom_8080874.s
deleted file mode 100644
index 220ec5f96..000000000
--- a/data/rom_8080874.s
+++ /dev/null
@@ -1,18 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-
-	.align 1
-gUnknown_0839ACDC:: @ 839ACDC
-	.2byte 0xC8, 0x48, 0x38, 0x28, 0x18, 0x0
-
-	.align 2
-gUnknown_0839ACE8:: @ 839ACE8
-	.4byte 4
-
-	.align 2
-gUnknown_0839ACEC:: @ 839ACEC
-	.4byte REG_WIN0H
-	.4byte ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1
-	.4byte 1
diff --git a/include/rom4.h b/include/rom4.h
index 803a38162..571ab1435 100644
--- a/include/rom4.h
+++ b/include/rom4.h
@@ -100,8 +100,8 @@ void sub_8053F84(void);
 void sub_8053FB0(u16);
 // is_warp1_light_level_8_or_9
 // sub_8053FF8
-// sub_8054034
-// sub_8054044
+bool8 sub_8054034(void);
+void sub_8054044(void);
 // sub_8054050
 void sub_80540D0(s16 *, u16 *);
 void sub_8054164(void);
diff --git a/ld_script.txt b/ld_script.txt
index a51f50947..4b5e32829 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -128,7 +128,7 @@ SECTIONS {
         asm/field_weather.o(.text);
         src/field_fadetransition.o(.text);
         asm/field_fadetransition.o(.text);
-        asm/field_screen_effect.o(.text);
+        src/field_screen_effect.o(.text);
         src/battle_setup.o(.text);
         asm/cable_club.o(.text);
         src/cable_club.o(.text);
@@ -137,7 +137,7 @@ SECTIONS {
         src/trainer_see.o(.text);
         src/wild_encounter.o(.text);
         src/field_effect.o(.text);
-        asm/unknown_task.o(.text);
+        src/unknown_task.o(.text);
         asm/pokemon_menu.o(.text);
         src/option_menu.o(.text);
         src/pokedex.o(.text);
@@ -378,7 +378,7 @@ SECTIONS {
         data/battle_anim_807B69C.o(.rodata);
         src/title_screen.o(.rodata);
         data/field_weather.o(.rodata);
-        data/rom_8080874.o(.rodata);
+        src/field_screen_effect.o(.rodata);
         src/battle_setup.o(.rodata);
         data/cable_club.o(.rodata);
         data/mori_debug_menu.o(.rodata);
diff --git a/src/field_screen_effect.c b/src/field_screen_effect.c
new file mode 100644
index 000000000..c6bd8cb77
--- /dev/null
+++ b/src/field_screen_effect.c
@@ -0,0 +1,339 @@
+#include "global.h"
+#include "field_camera.h"
+#include "menu.h"
+#include "palette.h"
+#include "rom4.h"
+#include "script.h"
+#include "task.h"
+#include "text.h"
+#include "unknown_task.h"
+
+struct UnknownStruct1
+{
+    u8 filler0[0x14];
+    u8 unk14;
+    u8 filler15[0xB];
+};
+extern struct UnknownStruct1 gUnknown_03004DC0;
+
+extern u16 gUnknown_03004DE0[][0x3C0];
+
+const static u16 gUnknown_0839ACDC[] = { 0xC8, 0x48, 0x38, 0x28, 0x18, 0x0 };
+
+const s32 gUnknown_0839ACE8 = 4;
+
+const static u32 gUnknown_0839ACEC[3] =
+{
+    REG_ADDR_WIN0H,
+    ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1,
+    1
+};
+
+static void sub_808136C(u16 *dest, u32 a2, s32 a3, s32 a4)
+{
+    if (a2 <= 0xA0)
+    {
+        if (a3 < 0)
+            a3 = 0;
+        if (a3 > 255)
+            a3 = 255;
+        if (a4 < 0)
+            a4 = 0;
+        if (a4 > 255)
+            a4 = 255;
+        dest[a2] = (a3 << 8) | a4;
+    }
+}
+
+static void sub_8081398(u16 *dest, s32 a2, s32 a3, s32 a4)
+{
+    s32 v1 = a4;
+    s32 v2 = a4;
+    s32 v3 = 0;
+    while (v1 >= v3)
+    {
+        sub_808136C(dest, a3 - v3, a2 - v1, a2 + v1);
+        sub_808136C(dest, a3 + v3, a2 - v1, a2 + v1);
+        sub_808136C(dest, a3 - v1, a2 - v3, a2 + v3);
+        sub_808136C(dest, a3 + v1, a2 - v3, a2 + v3);
+        v2 -= (v3 * 2) - 1;
+        v3++;
+        if (v2 < 0)
+        {
+            v2 += 2 * (v1 - 1);
+            v1--;
+        }
+    }
+}
+
+static void sub_8081424(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+
+    switch (data[0])
+    {
+    case 0:
+        sub_8081398(&gUnknown_03004DE0[gUnknown_03004DC0.unk14][0], data[1], data[2], data[3]);
+        data[0] = 1;
+        break;
+    case 1:
+        sub_8081398(&gUnknown_03004DE0[gUnknown_03004DC0.unk14][0], data[1], data[2], data[3]);
+        data[0] = 0;
+        data[3] += data[5];
+        if (data[3] > data[4])
+        {
+            if (data[6] == 1)
+            {
+                remove_some_task();
+                data[0] = 2;
+            }
+            else
+            {
+                DestroyTask(taskId);
+            }
+        }
+        break;
+    case 2:
+        dp12_8087EA4();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void sub_80814E8(u8 taskId)
+{
+    if (!FuncIsActiveTask(sub_8081424))
+    {
+        EnableBothScriptContexts();
+        DestroyTask(taskId);
+    }
+}
+
+static void sub_8081510(void)
+{
+    if (!FuncIsActiveTask(sub_80814E8))
+        CreateTask(sub_80814E8, 80);
+}
+
+static u8 sub_8081534(s32 a1, s32 a2, s32 a3, s32 a4, s32 a5, u8 a6)
+{
+    u8 taskId = CreateTask(sub_8081424, 80);
+    s16 *data = gTasks[taskId].data;
+
+    data[3] = a3;
+    data[4] = a4;
+    data[1] = a1;
+    data[2] = a2;
+    data[6] = a5;
+
+    if (a3 < a4)
+        data[5] = a6;
+    else
+        data[5] = -a6;
+
+    return taskId;
+}
+
+void sub_8081594(u8 a1)
+{
+    u8 index = sav1_get_flash_used_on_map();
+    u8 value = 0;
+    if (!a1)
+        value = 1;
+    sub_8081534(120, 80, gUnknown_0839ACDC[index], gUnknown_0839ACDC[a1], value, 1);
+    sub_8081510();
+    ScriptContext2_Enable();
+}
+
+void sub_80815E0(u8 a1)
+{
+    if (a1)
+    {
+        sub_8081398(&gUnknown_03004DE0[0][0], 120, 80, gUnknown_0839ACDC[a1]);
+        CpuFastSet(&gUnknown_03004DE0[0], &gUnknown_03004DE0[1], 480);
+    }
+}
+
+static void sub_808161C(u8 a1)
+{
+    int i;
+    u16 color[1];
+
+    if (!a1)
+        color[0] = 0x1F;
+    else
+        color[0] = 0x7C00;
+
+    for (i = 0; i < 16; i++)
+    {
+        LoadPalette(color, 0xF0 + i, 2);
+    }
+}
+
+static bool8 sub_8081658(u16 a1)
+{
+    u8 lo = REG_BLDALPHA & 0xFF;
+    u8 hi = REG_BLDALPHA >> 8;
+
+    if (a1)
+    {
+        if (lo)
+        {
+            lo--;
+        }
+    }
+    else
+    {
+        if (hi < 0x10)
+        {
+            hi++;
+        }
+    }
+
+    REG_BLDALPHA = (hi << 8) | lo;
+
+    if (lo == 0 && hi == 0x10)
+    {
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void sub_80816A8(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+
+    switch (data[0])
+    {
+    case 0:
+        data[6] = REG_DISPCNT;
+        data[7] = REG_BLDCNT;
+        data[8] = REG_BLDALPHA;
+        data[9] = REG_WININ;
+        data[10] = REG_WINOUT;
+        REG_DISPCNT &= 0xBFFF;
+        REG_BLDCNT |= gUnknown_081E29E8[0];
+        REG_BLDALPHA = 1804;
+        REG_WININ = 63;
+        REG_WINOUT = 30;
+        sub_8081398(&gUnknown_03004DE0[0][0], data[2], data[3], 1);
+        CpuFastSet(&gUnknown_03004DE0[0], &gUnknown_03004DE0[1], 480);
+        sub_80895F8(gUnknown_0839ACEC[0], gUnknown_0839ACEC[1], gUnknown_0839ACEC[2]);
+        data[0] = 1;
+        break;
+    case 1:
+        MenuFillWindowRectWithBlankTile(0, 0, 29, 19);
+        sub_808161C(data[1]);
+        sub_8081534(data[2], data[3], 1, 160, 1, 2);
+        data[0] = 2;
+        break;
+    case 2:
+        if (!FuncIsActiveTask(sub_8081424))
+        {
+            EnableBothScriptContexts();
+            data[0] = 3;
+        }
+        break;
+    case 3:
+        InstallCameraPanAheadCallback();
+        SetCameraPanningCallback(NULL);
+        data[5] = 0;
+        data[4] = 4;
+        data[0] = 4;
+        break;
+    case 4:
+        data[4]--;
+        if (!data[4])
+        {
+            s32 panning;
+            data[4] = 4;
+            data[5] ^= 1;
+            if (data[5])
+                panning = 4;
+            else
+                panning = -4;
+            SetCameraPanning(0, panning);
+        }
+        break;
+    case 6:
+        InstallCameraPanAheadCallback();
+        data[4] = 8;
+        data[0] = 7;
+        break;
+    case 7:
+        data[4]--;
+        if (!data[4])
+        {
+            data[4] = 8;
+            data[5] ^= 1;
+            if (sub_8081658(data[5]) == TRUE)
+                data[0] = 5;
+        }
+        break;
+    case 5:
+        MenuZeroFillWindowRect(0, 0, 29, 19);
+        LoadFontDefaultPalette(&gWindowConfig_81E6CE4);
+        REG_WIN0H = 255;
+        REG_DISPCNT = data[6];
+        REG_BLDCNT = data[7];
+        REG_BLDALPHA = data[8];
+        REG_WININ = data[9];
+        REG_WINOUT = data[10];
+        EnableBothScriptContexts();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+void sub_80818A4(void)
+{
+    u8 taskId = CreateTask(sub_80816A8, 80);
+    s16 *data = gTasks[taskId].data;
+
+    if (gScriptResult == 0)
+    {
+        data[1] = 0;
+        data[2] = 104;
+    }
+    else if (gScriptResult == 1)
+    {
+        data[1] = 1;
+        data[2] = 104;
+    }
+    else if (gScriptResult == 2)
+    {
+        data[1] = 0;
+        data[2] = 120;
+    }
+    else
+    {
+        data[1] = 1;
+        data[2] = 120;
+    }
+
+    data[3] = 80;
+}
+
+void sub_80818FC(void)
+{
+    u8 taskId = FindTaskIdByFunc(sub_80816A8);
+    gTasks[taskId].data[0] = 6;
+}
+
+static void task50_0807F0C8(u8);
+
+void sub_8081924(void)
+{
+    sub_8054044();
+    CreateTask(task50_0807F0C8, 80);
+}
+
+static void task50_0807F0C8(u8 taskId)
+{
+    if (sub_8054034() == TRUE)
+    {
+        DestroyTask(taskId);
+        EnableBothScriptContexts();
+    }
+}
diff --git a/src/unknown_task.c b/src/unknown_task.c
new file mode 100644
index 000000000..81b89ef92
--- /dev/null
+++ b/src/unknown_task.c
@@ -0,0 +1,255 @@
+#include "global.h"
+#include "data2.h"
+#include "task.h"
+#include "trig.h"
+
+struct UnknownStruct1
+{
+    void *src[2];
+    void *dest;
+    u32 unkC;
+    void (*unk10)(void);
+    u8 srcBank;
+    u8 unk15;
+    u8 unk16;
+    u8 unk17;
+    u8 taskId;
+    u8 filler19[0x7];
+};
+
+struct UnknownStruct2
+{
+    void *dest;
+    u32 control;
+    u8 unk8;
+    u8 unk9;
+};
+
+static void sub_80896F4(void);
+static void sub_8089714(void);
+
+extern u16 gUnknown_030041B0;
+extern u16 gUnknown_030041B4;
+extern u16 gUnknown_030041B8;
+extern u16 gUnknown_03004280;
+extern u16 gUnknown_03004288;
+extern u16 gUnknown_030042A0;
+extern u16 gUnknown_030042A4;
+extern u16 gUnknown_030042C0;
+
+extern u8 gUnknown_0202FFA4;
+
+extern struct UnknownStruct1 gUnknown_03004DC0;
+
+extern u16 gUnknown_03004DE0[][0x3C0];
+
+void remove_some_task(void)
+{
+    gUnknown_03004DC0.unk15 = 0;
+    DmaStop(0);
+    if (gUnknown_03004DC0.taskId != 0xFF)
+    {
+        DestroyTask(gUnknown_03004DC0.taskId);
+        gUnknown_03004DC0.taskId = 0xFF;
+    }
+}
+
+void dp12_8087EA4(void)
+{
+    CpuFill16(0, gUnknown_03004DE0, 0x780 * 2);
+    gUnknown_03004DC0.src[0] = 0;
+    gUnknown_03004DC0.src[1] = 0;
+    gUnknown_03004DC0.dest = 0;
+    gUnknown_03004DC0.unkC = 0;
+    gUnknown_03004DC0.srcBank = 0;
+    gUnknown_03004DC0.unk15 = 0;
+    gUnknown_03004DC0.unk16 = 0;
+    gUnknown_03004DC0.unk17 = 0;
+    gUnknown_03004DC0.taskId = 0xFF;
+}
+
+void sub_80895F8(struct UnknownStruct2 unk)
+{
+    if (unk.control == (((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1))
+    {
+        gUnknown_03004DC0.src[0] = &gUnknown_03004DE0[0][1];
+        gUnknown_03004DC0.src[1] = &gUnknown_03004DE0[1][1];
+        gUnknown_03004DC0.unk10 = sub_80896F4;
+    }
+    else
+    {
+        gUnknown_03004DC0.src[0] = &gUnknown_03004DE0[0][2];
+        gUnknown_03004DC0.src[1] = &gUnknown_03004DE0[1][2];
+        gUnknown_03004DC0.unk10 = sub_8089714;
+    }
+
+    gUnknown_03004DC0.unkC = unk.control;
+    gUnknown_03004DC0.dest = unk.dest;
+    gUnknown_03004DC0.unk15 = unk.unk8;
+    gUnknown_03004DC0.unk16 = unk.unk9;
+    gUnknown_03004DC0.unk17 = unk.unk9;
+}
+
+void sub_8089668(void)
+{
+    if (gUnknown_03004DC0.unk15)
+    {
+        if (gUnknown_03004DC0.unk15 == 3)
+        {
+            gUnknown_03004DC0.unk15 = 0;
+            DmaStop(0);
+            gUnknown_0202FFA4 = 1;
+        }
+        else
+        {
+            DmaStop(0);
+            DmaSet(0, gUnknown_03004DC0.src[gUnknown_03004DC0.srcBank], gUnknown_03004DC0.dest, gUnknown_03004DC0.unkC);
+            gUnknown_03004DC0.unk10();
+            gUnknown_03004DC0.srcBank ^= 1;
+        }
+    }
+}
+
+static void sub_80896F4(void)
+{
+    u16 *dest = (u16 *)gUnknown_03004DC0.dest;
+    u16 *src = (u16 *)&gUnknown_03004DE0[gUnknown_03004DC0.srcBank];
+    *dest = *src;
+}
+
+static void sub_8089714(void)
+{
+    u32 *dest = (u32 *)gUnknown_03004DC0.dest;
+    u32 *src = (u32 *)&gUnknown_03004DE0[gUnknown_03004DC0.srcBank];
+    *dest = *src;
+}
+
+static void task00_for_dp12(u8 taskId)
+{
+    int value = 0;
+
+    if (gUnknown_0202FFA4)
+    {
+        DestroyTask(taskId);
+        gUnknown_03004DC0.taskId = 0xFF;
+    }
+    else
+    {
+        if (gTasks[taskId].data[7])
+        {
+            switch (gTasks[taskId].data[6])
+            {
+            case 0x0:
+                value = gUnknown_030042A4;
+                break;
+            case 0x2:
+                value = gUnknown_030042A0;
+                break;
+            case 0x4:
+                value = gUnknown_030042C0;
+                break;
+            case 0x6:
+                value = gUnknown_030041B4;
+                break;
+            case 0x8:
+                value = gUnknown_03004288;
+                break;
+            case 0xA:
+                value = gUnknown_03004280;
+                break;
+            case 0xC:
+                value = gUnknown_030041B0;
+                break;
+            case 0xE:
+                value = gUnknown_030041B8;
+                break;
+            }
+        }
+        if (gTasks[taskId].data[4])
+        {
+            int i;
+            int offset;
+            gTasks[taskId].data[4]--;
+            offset = gTasks[taskId].data[3] + 320;
+            for (i = gTasks[taskId].data[0]; i < gTasks[taskId].data[1]; i++)
+            {
+                gUnknown_03004DE0[gUnknown_03004DC0.srcBank][i] = gUnknown_03004DE0[0][offset] + value;
+                offset++;
+            }
+        }
+        else
+        {
+            int i;
+            int offset;
+            gTasks[taskId].data[4] = gTasks[taskId].data[5];
+            offset = gTasks[taskId].data[3] + 320;
+            for (i = gTasks[taskId].data[0]; i < gTasks[taskId].data[1]; i++)
+            {
+                gUnknown_03004DE0[gUnknown_03004DC0.srcBank][i] = gUnknown_03004DE0[0][offset] + value;
+                offset++;
+            }
+            gTasks[taskId].data[3]++;
+            if (gTasks[taskId].data[3] == gTasks[taskId].data[2])
+            {
+                gTasks[taskId].data[3] = 0;
+            }
+        }
+    }
+}
+
+static void sub_80898FC(u16 *a1, u8 a2, u8 a3, u8 a4)
+{
+    u16 i = 0;
+    u8 offset = 0;
+
+    while (i < 0x100)
+    {
+        a1[i] = (gSineTable[offset] * a3) / 256;
+        offset += a2;
+        i++;
+    }
+}
+
+u8 sub_8089944(u8 a1, u8 a2, u8 a3, u8 a4, u8 a5, u8 a6, u8 a7)
+{
+    int i;
+    int offset;
+    struct UnknownStruct2 unk;
+    u8 taskId;
+
+    dp12_8087EA4();
+
+    unk.dest = (void *)(REG_ADDR_BG0HOFS + a6);
+    unk.control = ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1;
+    unk.unk8 = 1;
+    unk.unk9 = 0;
+
+    sub_80895F8(unk);
+
+    taskId = CreateTask(task00_for_dp12, 0);
+
+    gTasks[taskId].data[0] = a1;
+    gTasks[taskId].data[1] = a2;
+    gTasks[taskId].data[2] = 256 / a3;
+    gTasks[taskId].data[3] = 0;
+    gTasks[taskId].data[4] = a5;
+    gTasks[taskId].data[5] = a5;
+    gTasks[taskId].data[6] = a6;
+    gTasks[taskId].data[7] = a7;
+
+    gUnknown_03004DC0.taskId = taskId;
+    gUnknown_0202FFA4 = 0;
+
+    sub_80898FC(&gUnknown_03004DE0[0][320], a3, a4, a2 - a1);
+
+    offset = 320;
+
+    for (i = a1; i < a2; i++)
+    {
+        gUnknown_03004DE0[0][i] = gUnknown_03004DE0[0][offset];
+        gUnknown_03004DE0[1][i] = gUnknown_03004DE0[0][offset];
+        offset++;
+    }
+
+    return taskId;
+}