diff --git a/asm/field_control_avatar.s b/asm/field_control_avatar.s
index 5c515ae3dc..46983f325f 100644
--- a/asm/field_control_avatar.s
+++ b/asm/field_control_avatar.s
@@ -1467,7 +1467,7 @@ _0809CAF8:
 	cmp r0, 0x1
 	beq _0809CB28
 	movs r0, 0x1
-	bl sub_8137FC0
+	bl CountSSTidalStep
 	cmp r0, 0x1
 	bne _0809CB1C
 	ldr r0, =gUnknown_0823C050
diff --git a/asm/porthole.s b/asm/porthole.s
deleted file mode 100644
index 282f6f5843..0000000000
--- a/asm/porthole.s
+++ /dev/null
@@ -1,282 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_80FB59C
-sub_80FB59C: @ 80FB59C
-	push {r4-r6,lr}
-	sub sp, 0xC
-	mov r4, sp
-	adds r4, 0x5
-	mov r5, sp
-	adds r5, 0x6
-	add r6, sp, 0x8
-	add r0, sp, 0x4
-	adds r1, r4, 0
-	adds r2, r5, 0
-	adds r3, r6, 0
-	bl sub_8137FFC
-	lsls r0, 24
-	cmp r0, 0
-	bne _080FB5DE
-	add r0, sp, 0x4
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	movs r1, 0
-	ldrsb r1, [r4, r1]
-	movs r2, 0x1
-	negs r2, r2
-	movs r3, 0
-	ldrsb r3, [r5, r3]
-	movs r4, 0
-	ldrsb r4, [r6, r4]
-	str r4, [sp]
-	bl warp1_set
-	movs r0, 0x1
-	b _080FB5E0
-_080FB5DE:
-	movs r0, 0
-_080FB5E0:
-	add sp, 0xC
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80FB59C
-
-	thumb_func_start sub_80FB5E8
-sub_80FB5E8: @ 80FB5E8
-	push {r4-r7,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
-	ldr r0, =0x000040b4
-	bl GetVarPointer
-	adds r7, r0, 0
-	ldr r0, =gSaveBlock1Ptr
-	ldr r3, [r0]
-	adds r6, r3, 0x4
-	movs r0, 0
-	ldrsh r2, [r4, r0]
-	cmp r2, 0x1
-	beq _080FB648
-	cmp r2, 0x1
-	bgt _080FB624
-	cmp r2, 0
-	beq _080FB62E
-	b _080FB6E2
-	.pool
-_080FB624:
-	cmp r2, 0x2
-	beq _080FB68A
-	cmp r2, 0x3
-	beq _080FB6C4
-	b _080FB6E2
-_080FB62E:
-	ldr r0, =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080FB6E2
-	strh r2, [r4, 0x2]
-	movs r0, 0x2
-	strh r0, [r4]
-	b _080FB6E2
-	.pool
-_080FB648:
-	ldr r0, =gMain
-	ldrh r1, [r0, 0x2E]
-	adds r0, r2, 0
-	ands r0, r1
-	cmp r0, 0
-	beq _080FB656
-	strh r2, [r4, 0x2]
-_080FB656:
-	ldrb r1, [r6, 0x1]
-	ldrb r2, [r3, 0x4]
-	movs r0, 0xFF
-	bl sub_80D3340
-	lsls r0, 24
-	cmp r0, 0
-	beq _080FB6E2
-	movs r0, 0x1
-	bl sub_8137FC0
-	cmp r0, 0x1
-	bne _080FB686
-	ldrh r0, [r7]
-	cmp r0, 0x2
-	bne _080FB680
-	movs r0, 0x9
-	b _080FB682
-	.pool
-_080FB680:
-	movs r0, 0xA
-_080FB682:
-	strh r0, [r7]
-	b _080FB692
-_080FB686:
-	movs r0, 0x2
-	strh r0, [r4]
-_080FB68A:
-	movs r1, 0x2
-	ldrsh r0, [r4, r1]
-	cmp r0, 0
-	beq _080FB698
-_080FB692:
-	movs r0, 0x3
-	strh r0, [r4]
-	b _080FB6E2
-_080FB698:
-	ldrh r0, [r7]
-	cmp r0, 0x2
-	bne _080FB6AC
-	ldrb r1, [r6, 0x1]
-	ldrb r2, [r6]
-	ldr r3, =gUnknown_0858E8AB
-	b _080FB6B2
-	.pool
-_080FB6AC:
-	ldrb r1, [r6, 0x1]
-	ldrb r2, [r6]
-	ldr r3, =gUnknown_0858E8AD
-_080FB6B2:
-	movs r0, 0xFF
-	bl exec_movement
-	movs r0, 0x1
-	strh r0, [r4]
-	b _080FB6E2
-	.pool
-_080FB6C4:
-	ldr r0, =0x00004001
-	bl FlagReset
-	movs r0, 0x80
-	lsls r0, 7
-	bl FlagReset
-	movs r0, 0
-	bl copy_saved_warp2_bank_and_enter_x_to_warp1
-	bl sp13E_warp_to_last_warp
-	adds r0, r5, 0
-	bl DestroyTask
-_080FB6E2:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB5E8
-
-	thumb_func_start sub_80FB6EC
-sub_80FB6EC: @ 80FB6EC
-	push {r4,lr}
-	sub sp, 0x4
-	ldr r1, =SpriteCallbackDummy
-	movs r0, 0
-	str r0, [sp]
-	movs r0, 0x8C
-	movs r2, 0x70
-	movs r3, 0x50
-	bl AddPseudoFieldObject
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, =gSprites
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	adds r4, r1, r2
-	adds r2, r4, 0
-	adds r2, 0x3E
-	ldrb r1, [r2]
-	movs r0, 0x3
-	negs r0, r0
-	ands r0, r1
-	strb r0, [r2]
-	ldr r0, =0x000040b4
-	bl VarGet
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x2
-	bne _080FB74C
-	movs r0, 0x4
-	bl FieldObjectDirectionToImageAnimId
-	adds r1, r0, 0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r0, r4, 0
-	bl StartSpriteAnim
-	b _080FB75E
-	.pool
-_080FB74C:
-	movs r0, 0x3
-	bl FieldObjectDirectionToImageAnimId
-	adds r1, r0, 0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r0, r4, 0
-	bl StartSpriteAnim
-_080FB75E:
-	add sp, 0x4
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80FB6EC
-
-	thumb_func_start sub_80FB768
-sub_80FB768: @ 80FB768
-	push {lr}
-	bl sub_80FB6EC
-	ldr r2, =gMapObjects
-	ldr r0, =gPlayerAvatar
-	ldrb r1, [r0, 0x5]
-	lsls r0, r1, 3
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r2
-	ldrb r1, [r0, 0x1]
-	movs r2, 0x20
-	orrs r1, r2
-	strb r1, [r0, 0x1]
-	bl pal_fill_black
-	ldr r0, =sub_80FB5E8
-	movs r1, 0x50
-	bl CreateTask
-	bl ScriptContext2_Enable
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB768
-
-	thumb_func_start sub_80FB7A4
-sub_80FB7A4: @ 80FB7A4
-	push {lr}
-	ldr r0, =0x0000088d
-	bl FlagSet
-	ldr r0, =0x00004001
-	bl FlagSet
-	movs r0, 0x80
-	lsls r0, 7
-	bl FlagSet
-	ldr r0, =gSaveBlock1Ptr
-	ldr r0, [r0]
-	movs r1, 0x4
-	ldrsb r1, [r0, r1]
-	movs r2, 0x5
-	ldrsb r2, [r0, r2]
-	movs r3, 0x1
-	negs r3, r3
-	movs r0, 0
-	bl saved_warp2_set
-	bl sub_80FB59C
-	bl sub_80AF8B8
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB7A4
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/region_map.s b/asm/region_map.s
index 150b4893e2..032bdf7a56 100644
--- a/asm/region_map.s
+++ b/asm/region_map.s
@@ -1939,7 +1939,7 @@ sub_8123C00: @ 8123C00
 	adds r1, r4, 0
 	adds r2, r5, 0
 	adds r3, r6, 0
-	bl sub_8137FFC
+	bl GetSSTidalLocation
 	lsls r0, 24
 	lsrs r0, 24
 	mov r10, r5
diff --git a/asm/rom4.s b/asm/rom4.s
index a3125efc4c..1887883d71 100644
--- a/asm/rom4.s
+++ b/asm/rom4.s
@@ -3175,7 +3175,7 @@ CB2_NewGame: @ 8085EF8
 	bl ScriptContext1_Init
 	bl ScriptContext2_Disable
 	ldr r1, =gUnknown_03005DAC
-	ldr r0, =sub_80FB4E0
+	ldr r0, =ExecuteTruckSequence
 	str r0, [r1]
 	ldr r1, =gUnknown_03005DB0
 	movs r0, 0
diff --git a/asm/rom6.s b/asm/rom6.s
index 4bad6e35d1..e664a96669 100644
--- a/asm/rom6.s
+++ b/asm/rom6.s
@@ -5062,8 +5062,8 @@ sub_8137FB0: @ 8137FB0
 	.pool
 	thumb_func_end sub_8137FB0
 
-	thumb_func_start sub_8137FC0
-sub_8137FC0: @ 8137FC0
+	thumb_func_start CountSSTidalStep
+CountSSTidalStep: @ 8137FC0
 	push {r4,lr}
 	lsls r0, 16
 	lsrs r4, r0, 16
@@ -5091,10 +5091,10 @@ _08137FF6:
 	pop {r4}
 	pop {r1}
 	bx r1
-	thumb_func_end sub_8137FC0
+	thumb_func_end CountSSTidalStep
 
-	thumb_func_start sub_8137FFC
-sub_8137FFC: @ 8137FFC
+	thumb_func_start GetSSTidalLocation
+GetSSTidalLocation: @ 8137FFC
 	push {r4-r7,lr}
 	mov r7, r8
 	push {r7}
@@ -5203,7 +5203,7 @@ _081380CE:
 	pop {r4-r7}
 	pop {r1}
 	bx r1
-	thumb_func_end sub_8137FFC
+	thumb_func_end GetSSTidalLocation
 
 	thumb_func_start is_tile_that_overrides_player_control
 is_tile_that_overrides_player_control: @ 81380D8
diff --git a/asm/truck_scene.s b/asm/truck_scene.s
deleted file mode 100644
index bc3388cb6c..0000000000
--- a/asm/truck_scene.s
+++ /dev/null
@@ -1,589 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_80FB0B0
-sub_80FB0B0: @ 80FB0B0
-	push {r4,lr}
-	adds r4, r0, 0
-	movs r1, 0x78
-	bl __modsi3
-	cmp r0, 0
-	bne _080FB0C4
-	movs r0, 0x1
-	negs r0, r0
-	b _080FB0D6
-_080FB0C4:
-	adds r0, r4, 0
-	movs r1, 0xA
-	bl __modsi3
-	cmp r0, 0x4
-	ble _080FB0D4
-	movs r0, 0
-	b _080FB0D6
-_080FB0D4:
-	movs r0, 0x1
-_080FB0D6:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80FB0B0
-
-	thumb_func_start sub_80FB0DC
-sub_80FB0DC: @ 80FB0DC
-	push {lr}
-	adds r0, 0x78
-	movs r1, 0xB4
-	bl __modsi3
-	cmp r0, 0
-	beq _080FB0EE
-	movs r0, 0
-	b _080FB0F2
-_080FB0EE:
-	movs r0, 0x1
-	negs r0, r0
-_080FB0F2:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80FB0DC
-
-	thumb_func_start sub_80FB0F8
-sub_80FB0F8: @ 80FB0F8
-	push {r4,r5,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, =gTasks + 0x8
-	adds r5, r1, r0
-	movs r1, 0
-	ldrsh r0, [r5, r1]
-	adds r0, 0x1E
-	bl sub_80FB0DC
-	ldr r4, =gSaveBlock1Ptr
-	ldr r2, [r4]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	lsls r0, 18
-	movs r3, 0xC0
-	lsls r3, 10
-	orrs r0, r3
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x1
-	movs r3, 0x3
-	bl sub_808E82C
-	movs r3, 0
-	ldrsh r0, [r5, r3]
-	bl sub_80FB0DC
-	ldr r2, [r4]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	lsls r0, 17
-	ldr r3, =0xfffd0000
-	adds r0, r3
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x2
-	movs r3, 0
-	bl sub_808E82C
-	movs r1, 0
-	ldrsh r0, [r5, r1]
-	bl sub_80FB0DC
-	ldr r2, [r4]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	movs r4, 0
-	movs r3, 0x3
-	negs r3, r3
-	lsls r0, 18
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x3
-	bl sub_808E82C
-	ldrh r0, [r5]
-	adds r0, 0x1
-	strh r0, [r5]
-	lsls r0, 16
-	ldr r1, =0x75300000
-	cmp r0, r1
-	bne _080FB180
-	strh r4, [r5]
-_080FB180:
-	movs r3, 0
-	ldrsh r0, [r5, r3]
-	bl sub_80FB0B0
-	adds r1, r0, 0
-	lsls r1, 16
-	asrs r1, 16
-	movs r0, 0
-	bl SetCameraPanning
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB0F8
-
-	thumb_func_start sub_80FB1AC
-sub_80FB1AC: @ 80FB1AC
-	push {r4-r7,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r2, r0, 24
-	lsls r0, r2, 2
-	adds r0, r2
-	lsls r3, r0, 3
-	ldr r4, =gTasks + 0x8
-	adds r7, r3, r4
-	ldrh r1, [r7]
-	adds r1, 0x1
-	strh r1, [r7]
-	ldrh r0, [r7, 0x4]
-	adds r0, 0x1
-	strh r0, [r7, 0x4]
-	lsls r1, 16
-	asrs r1, 16
-	cmp r1, 0x5
-	ble _080FB1DC
-	movs r0, 0
-	strh r0, [r7]
-	ldrh r0, [r7, 0x2]
-	adds r0, 0x1
-	strh r0, [r7, 0x2]
-_080FB1DC:
-	ldrh r0, [r7, 0x2]
-	cmp r0, 0x13
-	bne _080FB1F0
-	adds r0, r2, 0
-	bl DestroyTask
-	b _080FB2A8
-	.pool
-_080FB1F0:
-	ldr r2, =gUnknown_0858E898
-	movs r1, 0x2
-	ldrsh r0, [r7, r1]
-	adds r0, r2
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	cmp r0, 0x2
-	bne _080FB20C
-	adds r0, r4, 0
-	subs r0, 0x8
-	adds r0, r3, r0
-	ldr r1, =sub_80FB2C0
-	str r1, [r0]
-_080FB20C:
-	movs r4, 0x2
-	ldrsh r0, [r7, r4]
-	adds r0, r2
-	movs r5, 0
-	ldrsb r5, [r0, r5]
-	lsls r5, 16
-	lsrs r5, 16
-	movs r1, 0x4
-	ldrsh r0, [r7, r1]
-	bl sub_80FB0B0
-	adds r1, r0, 0
-	lsls r5, 16
-	asrs r5, 16
-	lsls r1, 16
-	asrs r1, 16
-	adds r0, r5, 0
-	bl SetCameraPanning
-	movs r4, 0x4
-	ldrsh r0, [r7, r4]
-	adds r0, 0x1E
-	bl sub_80FB0DC
-	ldr r6, =gSaveBlock1Ptr
-	ldr r2, [r6]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	movs r3, 0x3
-	subs r3, r5
-	lsls r3, 16
-	asrs r3, 16
-	lsls r0, 18
-	movs r4, 0xC0
-	lsls r4, 10
-	orrs r0, r4
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x1
-	bl sub_808E82C
-	movs r1, 0x4
-	ldrsh r0, [r7, r1]
-	bl sub_80FB0DC
-	ldr r2, [r6]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	negs r3, r5
-	lsls r3, 16
-	asrs r3, 16
-	lsls r0, 17
-	ldr r4, =0xfffd0000
-	adds r0, r4
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x2
-	bl sub_808E82C
-	movs r1, 0x4
-	ldrsh r0, [r7, r1]
-	bl sub_80FB0DC
-	ldr r2, [r6]
-	ldrb r1, [r2, 0x5]
-	ldrb r2, [r2, 0x4]
-	movs r4, 0x3
-	negs r4, r4
-	adds r3, r4, 0
-	subs r3, r5
-	lsls r3, 16
-	asrs r3, 16
-	lsls r0, 18
-	asrs r0, 16
-	str r0, [sp]
-	movs r0, 0x3
-	bl sub_808E82C
-_080FB2A8:
-	add sp, 0x4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB1AC
-
-	thumb_func_start sub_80FB2C0
-sub_80FB2C0: @ 80FB2C0
-	push {r4-r6,lr}
-	mov r6, r8
-	push {r6}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r0, 24
-	adds r3, r0, 0
-	lsls r0, r3, 2
-	adds r0, r3
-	lsls r0, 3
-	ldr r1, =gTasks + 0x8
-	adds r2, r0, r1
-	ldrh r0, [r2]
-	adds r0, 0x1
-	strh r0, [r2]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x5
-	ble _080FB2F0
-	movs r0, 0
-	strh r0, [r2]
-	ldrh r0, [r2, 0x2]
-	adds r0, 0x1
-	strh r0, [r2, 0x2]
-_080FB2F0:
-	ldrh r0, [r2, 0x2]
-	cmp r0, 0x13
-	bne _080FB304
-	adds r0, r3, 0
-	bl DestroyTask
-	b _080FB358
-	.pool
-_080FB304:
-	ldr r1, =gUnknown_0858E898
-	movs r3, 0x2
-	ldrsh r0, [r2, r3]
-	adds r0, r1
-	movs r1, 0
-	mov r8, r1
-	movs r6, 0
-	ldrsb r6, [r0, r6]
-	adds r0, r6, 0
-	bl SetCameraPanning
-	ldr r5, =gSaveBlock1Ptr
-	ldr r0, [r5]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	movs r3, 0x3
-	subs r3, r6
-	movs r0, 0x3
-	str r0, [sp]
-	movs r0, 0x1
-	bl sub_808E82C
-	ldr r0, [r5]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	negs r3, r6
-	mov r4, r8
-	subs r4, 0x3
-	str r4, [sp]
-	movs r0, 0x2
-	bl sub_808E82C
-	ldr r0, [r5]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	subs r4, r6
-	mov r3, r8
-	str r3, [sp]
-	movs r0, 0x3
-	adds r3, r4, 0
-	bl sub_808E82C
-_080FB358:
-	add sp, 0x4
-	pop {r3}
-	mov r8, r3
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB2C0
-
-	thumb_func_start sub_80FB36C
-sub_80FB36C: @ 80FB36C
-	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
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x5
-	bls _080FB386
-	b _080FB4D8
-_080FB386:
-	lsls r0, 2
-	ldr r1, =_080FB398
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_080FB398:
-	.4byte _080FB3B0
-	.4byte _080FB3E8
-	.4byte _080FB404
-	.4byte _080FB450
-	.4byte _080FB474
-	.4byte _080FB492
-_080FB3B0:
-	ldrh r0, [r4, 0x2]
-	adds r0, 0x1
-	strh r0, [r4, 0x2]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x5A
-	beq _080FB3C0
-	b _080FB4D8
-_080FB3C0:
-	movs r0, 0
-	bl SetCameraPanningCallback
-	movs r0, 0
-	strh r0, [r4, 0x2]
-	ldr r0, =sub_80FB0F8
-	movs r1, 0xA
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r4, 0x4]
-	movs r0, 0x1
-	strh r0, [r4]
-	movs r0, 0x31
-	bl PlaySE
-	b _080FB4D8
-	.pool
-_080FB3E8:
-	ldrh r0, [r4, 0x2]
-	adds r0, 0x1
-	strh r0, [r4, 0x2]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x96
-	bne _080FB4D8
-	bl pal_fill_black
-	movs r0, 0
-	strh r0, [r4, 0x2]
-	movs r0, 0x2
-	strh r0, [r4]
-	b _080FB4D8
-_080FB404:
-	ldrh r0, [r4, 0x2]
-	adds r3, r0, 0x1
-	strh r3, [r4, 0x2]
-	ldr r0, =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0
-	bne _080FB4D8
-	lsls r1, r3, 16
-	movs r0, 0x96
-	lsls r0, 17
-	cmp r1, r0
-	ble _080FB4D8
-	strh r2, [r4, 0x2]
-	ldrb r0, [r4, 0x4]
-	bl DestroyTask
-	ldr r0, =sub_80FB1AC
-	movs r1, 0xA
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r4, 0x6]
-	movs r0, 0x3
-	strh r0, [r4]
-	movs r0, 0x32
-	bl PlaySE
-	b _080FB4D8
-	.pool
-_080FB450:
-	ldr r2, =gTasks
-	movs r0, 0x6
-	ldrsh r1, [r4, r0]
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 3
-	adds r0, r2
-	ldrb r5, [r0, 0x4]
-	cmp r5, 0
-	bne _080FB4D8
-	bl InstallCameraPanAheadCallback
-	strh r5, [r4, 0x2]
-	movs r0, 0x4
-	strh r0, [r4]
-	b _080FB4D8
-	.pool
-_080FB474:
-	ldrh r0, [r4, 0x2]
-	adds r0, 0x1
-	strh r0, [r4, 0x2]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x5A
-	bne _080FB4D8
-	movs r0, 0x33
-	bl PlaySE
-	movs r0, 0
-	strh r0, [r4, 0x2]
-	movs r0, 0x5
-	strh r0, [r4]
-	b _080FB4D8
-_080FB492:
-	ldrh r0, [r4, 0x2]
-	adds r0, 0x1
-	strh r0, [r4, 0x2]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x78
-	bne _080FB4D8
-	movs r2, 0x82
-	lsls r2, 2
-	movs r0, 0xB
-	movs r1, 0x8
-	bl MapGridSetMetatileIdAt
-	movs r2, 0x84
-	lsls r2, 2
-	movs r0, 0xB
-	movs r1, 0x9
-	bl MapGridSetMetatileIdAt
-	movs r2, 0x86
-	lsls r2, 2
-	movs r0, 0xB
-	movs r1, 0xA
-	bl MapGridSetMetatileIdAt
-	bl DrawWholeMapView
-	movs r0, 0x34
-	bl PlaySE
-	adds r0, r5, 0
-	bl DestroyTask
-	bl ScriptContext2_Disable
-_080FB4D8:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80FB36C
-
-	thumb_func_start sub_80FB4E0
-sub_80FB4E0: @ 80FB4E0
-	push {lr}
-	sub sp, 0x4
-	ldr r2, =0x0000020d
-	movs r0, 0xB
-	movs r1, 0x8
-	bl MapGridSetMetatileIdAt
-	ldr r2, =0x00000215
-	movs r0, 0xB
-	movs r1, 0x9
-	bl MapGridSetMetatileIdAt
-	ldr r2, =0x0000021d
-	movs r0, 0xB
-	movs r1, 0xA
-	bl MapGridSetMetatileIdAt
-	bl DrawWholeMapView
-	bl ScriptContext2_Enable
-	movs r0, 0
-	str r0, [sp]
-	ldr r1, =gPlttBufferFaded
-	ldr r2, =0x01000100
-	mov r0, sp
-	bl CpuFastSet
-	ldr r0, =sub_80FB36C
-	movs r1, 0xA
-	bl CreateTask
-	add sp, 0x4
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB4E0
-
-	thumb_func_start sub_80FB540
-sub_80FB540: @ 80FB540
-	push {r4-r6,lr}
-	sub sp, 0x4
-	ldr r0, =sub_80FB36C
-	bl FuncIsActiveTask
-	lsls r0, 24
-	lsrs r6, r0, 24
-	cmp r6, 0
-	bne _080FB58A
-	ldr r4, =gSaveBlock1Ptr
-	ldr r0, [r4]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	movs r0, 0x3
-	str r0, [sp]
-	movs r0, 0x1
-	movs r3, 0x3
-	bl sub_808E82C
-	ldr r0, [r4]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	movs r5, 0x3
-	negs r5, r5
-	str r5, [sp]
-	movs r0, 0x2
-	movs r3, 0
-	bl sub_808E82C
-	ldr r0, [r4]
-	ldrb r1, [r0, 0x5]
-	ldrb r2, [r0, 0x4]
-	str r6, [sp]
-	movs r0, 0x3
-	adds r3, r5, 0
-	bl sub_808E82C
-_080FB58A:
-	add sp, 0x4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80FB540
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/data3b.s b/data/data3b.s
index 3faa3d290f..a4499c852d 100644
--- a/data/data3b.s
+++ b/data/data3b.s
@@ -56,7 +56,7 @@ gUnknown_0858E864:: @ 858E864
 gUnknown_0858E880:: @ 858E880
 	.incbin "baserom.gba", 0x58e880, 0x18
 
-gUnknown_0858E898:: @ 858E898
+gTruckCamera_HorizontalTable:: @ 858E898
 	.incbin "baserom.gba", 0x58e898, 0x13
 
 gUnknown_0858E8AB:: @ 858E8AB
diff --git a/include/field_map_obj.h b/include/field_map_obj.h
index 40cc640548..be7b82a219 100755
--- a/include/field_map_obj.h
+++ b/include/field_map_obj.h
@@ -4,6 +4,8 @@
 #define NUM_OBJECT_GRAPHICS_INFO 239
 #define SPRITE_VAR 240
 
+struct Sprite; // pika pls
+
 // Exported struct declarations
 
 enum SpinnerRunnerFollowPatterns {
diff --git a/ld_script.txt b/ld_script.txt
index 048f123362..e973a7748d 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -158,8 +158,7 @@ SECTIONS {
         asm/field_poison.o(.text);
         src/pokemon_size_record.o(.text);
         asm/fldeff_80F9BCC.o(.text);
-        asm/truck_scene.o(.text);
-        asm/porthole.o(.text);
+        src/field_special_scene.o(.text);
         asm/rotating_gate.o(.text);
         src/safari_zone.o(.text);
         asm/contest_link_80FC4F4.o(.text);
diff --git a/src/field_special_scene.c b/src/field_special_scene.c
new file mode 100755
index 0000000000..22a20161d6
--- /dev/null
+++ b/src/field_special_scene.c
@@ -0,0 +1,365 @@
+#include "global.h"
+#include "task.h"
+#include "field_map_obj.h"
+#include "songs.h"
+#include "sound.h"
+#include "palette.h"
+#include "script.h"
+#include "vars.h"
+#include "event_data.h"
+#include "main.h"
+#include "sprite.h"
+
+#define SECONDS(value) ((signed) (60.0 * value + 0.5))
+
+// porthole states
+enum
+{
+    INIT_PORTHOLE,
+    IDLE_CHECK,
+    EXECUTE_MOVEMENT,
+    EXIT_PORTHOLE,
+};
+
+extern void SetCameraPanning(s16 x, s16 y);
+extern void SetCameraPanningCallback(void ( *callback)());
+extern void InstallCameraPanAheadCallback();
+extern void pal_fill_black(void);
+extern void MapGridSetMetatileIdAt(s32 x, s32 y, u16 metatileId);
+extern void DrawWholeMapView();
+
+extern s8 gTruckCamera_HorizontalTable[];
+
+extern u8 gUnknown_0858E8AB[];
+extern u8 gUnknown_0858E8AD[];
+
+void Task_Truck3(u8);
+
+s32 GetTruckCameraBobbingY(int a1)
+{
+    if (!(a1 % 120))
+        return -1;
+    else if ((a1 % 10) <= 4)
+        return 1;
+
+    return 0;
+}
+
+s32 GetTruckBoxMovement(int a1) // for the box movement?
+{
+    if (!((a1 + 120) % 180))
+        return -1;
+
+    return 0;
+}
+
+// smh STILL BROKEN IN EMERALD
+void Task_Truck1(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    s16 cameraYpan;
+    s16 box1 = 0;
+    s16 box2 = 0;
+    s16 box3 = 0;
+    u8 mapNum, mapGroup;
+    register s16 zero asm("r4");
+
+    box1 = GetTruckBoxMovement(data[0] + 30) * 4; // top box.
+    sub_808E82C(1, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 3, box1 + 3);
+    box2 = GetTruckBoxMovement(data[0]) * 2; // bottom left box.
+    sub_808E82C(2, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 0, box2 - 3);
+    box3 = GetTruckBoxMovement(data[0]) * 4; // bottom right box.
+    mapNum = gSaveBlock1Ptr->location.mapNum;
+    mapGroup = gSaveBlock1Ptr->location.mapGroup;
+    zero = 0;
+    sub_808E82C(3, mapNum, mapGroup, -3, box3);
+
+    if (++data[0] == SECONDS(500)) // this will never run
+        data[0] = zero; // reset the timer if it gets stuck.
+
+    cameraYpan = GetTruckCameraBobbingY(data[0]);
+    SetCameraPanning(0, cameraYpan);
+}
+
+void Task_Truck2(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    s16 cameraYpan;
+    s16 cameraXpan;
+    s16 box1;
+    s16 box2;
+    s16 box3;
+
+    data[0]++;
+    data[2]++;
+
+    if (data[0] > 5)
+    {
+        data[0] = 0;
+        data[1]++;
+    }
+    if ((u16)data[1] == 19)
+    {
+        DestroyTask(taskId);
+    }
+    else
+    {
+        if (gTruckCamera_HorizontalTable[data[1]] == 2)
+            gTasks[taskId].func = Task_Truck3;
+
+        cameraXpan = gTruckCamera_HorizontalTable[data[1]];
+        cameraYpan = GetTruckCameraBobbingY(data[2]);
+        SetCameraPanning(cameraXpan, cameraYpan);
+        box1 = GetTruckBoxMovement(data[2] + 30) * 4;
+        sub_808E82C(1, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 3 - cameraXpan, box1 + 3);
+        box2 = GetTruckBoxMovement(data[2]) * 2;
+        sub_808E82C(2, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, -cameraXpan, box2 - 3);
+        box3 = GetTruckBoxMovement(data[2]) * 4;
+        sub_808E82C(3, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, -3 - cameraXpan, box3);
+    }
+}
+
+void Task_Truck3(u8 taskId)
+{
+   s16 *data = gTasks[taskId].data;
+   s16 cameraXpan;
+   s16 cameraYpan;
+
+   data[0]++;
+
+   if (data[0] > 5)
+   {
+       data[0] = 0;
+       data[1]++;
+   }
+
+   if ((u16)data[1] == 19)
+   {
+       DestroyTask(taskId);
+   }
+   else
+   {
+       cameraXpan = gTruckCamera_HorizontalTable[data[1]];
+       cameraYpan = 0;
+       SetCameraPanning(cameraXpan, 0);
+       sub_808E82C(1, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 3 - cameraXpan, cameraYpan + 3);
+       sub_808E82C(2, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, -cameraXpan, cameraYpan - 3);
+       sub_808E82C(3, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, -3 - cameraXpan, cameraYpan);
+   }
+}
+
+void Task_HandleTruckSequence(u8 taskId)
+{
+   s16 *data = gTasks[taskId].data;
+
+    switch (data[0])
+    {
+        /*
+        Each case has a timer which is handled with data[1], incrementing
+        until it reaches the if function's condition, which sets the next task up.
+        */
+    case 0:
+        data[1]++;
+        if (data[1] == SECONDS(1.5))
+        {
+            SetCameraPanningCallback(NULL);
+            data[1] = 0; // reset the timer.
+            data[2] = CreateTask(Task_Truck1, 0xA);
+            data[0] = 1; // run the next case.
+            PlaySE(SE_TRACK_MOVE);
+        }
+        break;
+    case 1:
+        data[1]++;
+        if (data[1] == SECONDS(2.5))
+        {
+            pal_fill_black();
+            data[1] = 0;
+            data[0] = 2;
+        }
+        break;
+    case 2:
+        data[1]++;
+        if (!gPaletteFade.active && data[1] > SECONDS(5))
+        {
+            data[1] = 0;
+            DestroyTask(data[2]);
+            data[3] = CreateTask(Task_Truck2, 0xA);
+            data[0] = 3;
+            PlaySE(SE_TRACK_STOP);
+        }
+        break;
+    case 3:
+        if (!gTasks[data[3]].isActive) // is Truck2 no longer active (is Truck3 active?)
+        {
+            InstallCameraPanAheadCallback();
+            data[1] = 0;
+            data[0] = 4;
+        }
+        break;
+    case 4:
+        data[1]++;
+        if (data[1] == 90)
+        {
+            PlaySE(SE_TRACK_HAIK);
+            data[1] = 0;
+            data[0] = 5;
+        }
+        break;
+    case 5:
+        data[1]++;
+        if (data[1] == 120)
+        {
+            MapGridSetMetatileIdAt(11, 8, 520);
+            MapGridSetMetatileIdAt(11, 9, 528);
+            MapGridSetMetatileIdAt(11, 10, 536);
+            DrawWholeMapView();
+            PlaySE(SE_TRACK_DOOR);
+            DestroyTask(taskId);
+            ScriptContext2_Disable();
+        }
+        break;
+    }
+}
+
+void ExecuteTruckSequence(void)
+{
+    MapGridSetMetatileIdAt(11, 8, 525);
+    MapGridSetMetatileIdAt(11, 9, 533);
+    MapGridSetMetatileIdAt(11, 10, 541);
+    DrawWholeMapView();
+    ScriptContext2_Enable();
+    CpuFastFill(0, gPlttBufferFaded, 0x400);
+    CreateTask(Task_HandleTruckSequence, 0xA);
+}
+
+void EndTruckSequence(u8 taskId)
+{
+    if (!FuncIsActiveTask(Task_HandleTruckSequence))
+    {
+        sub_808E82C(1, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 3, 3);
+        sub_808E82C(2, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, 0, -3);
+        sub_808E82C(3, gSaveBlock1Ptr->location.mapNum, gSaveBlock1Ptr->location.mapGroup, -3, 0);
+    }
+}
+
+extern u8 GetSSTidalLocation(s8 *, s8 *, s16 *, s16 *); // should be in field_specials.h
+extern void warp1_set(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y);
+
+bool8 sub_80FB59C(void)
+{
+    s8 mapGroup, mapNum;
+    s16 x, y;
+
+    if (GetSSTidalLocation(&mapGroup, &mapNum, &x, &y))
+    {
+        return FALSE;
+    }
+    else
+    {
+        warp1_set(mapGroup, mapNum, -1, x, y);
+        return TRUE;
+    }
+}
+
+extern bool8 sub_80D3340(u8, u8, u8);
+extern bool32 CountSSTidalStep(u16);
+extern bool8 exec_movement(u8, u8, u8, u8 *);
+extern void copy_saved_warp2_bank_and_enter_x_to_warp1(u8 unused);
+extern void sp13E_warp_to_last_warp(void);
+
+void Task_HandlePorthole(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    u16 *var = GetVarPointer(VAR_PORTHOLE);
+    struct WarpData *location = &gSaveBlock1Ptr->location;
+
+    switch (data[0])
+    {
+    case INIT_PORTHOLE: // finish fading before making porthole finish.
+        if (!gPaletteFade.active)
+        {
+            data[1] = 0;
+            data[0] = EXECUTE_MOVEMENT; // execute movement before checking if should be exited. strange?
+        }
+        break;
+    case IDLE_CHECK: // idle and move.
+        if (gMain.newKeys & A_BUTTON)
+            data[1] = 1;
+        if (!sub_80D3340(0xFF, location->mapNum, location->mapGroup))
+            return;
+        if (CountSSTidalStep(1) == TRUE)
+        {
+            if (*var == 2)
+                *var = 9;
+            else
+                *var = 10;
+            data[0] = 3;
+            return;
+        }
+        data[0] = 2;
+    case EXECUTE_MOVEMENT: // execute movement.
+        if (data[1])
+        {
+            data[0] = EXIT_PORTHOLE; // exit porthole.
+            return;
+        }
+        // run this once.
+        if (*var == 2) // which direction?
+        {
+            exec_movement(0xFF, location->mapNum, location->mapGroup, gUnknown_0858E8AB);
+            data[0] = IDLE_CHECK; // run case 1.
+        }
+        else
+        {
+            exec_movement(0xFF, location->mapNum, location->mapGroup, gUnknown_0858E8AD);
+            data[0] = IDLE_CHECK; // run case 1.
+        }
+        break;
+    case EXIT_PORTHOLE: // exit porthole.
+        FlagReset(0x4001);
+        FlagReset(0x4000);
+        copy_saved_warp2_bank_and_enter_x_to_warp1(0);
+        sp13E_warp_to_last_warp();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+void sub_80FB6EC(void)
+{
+    u8 spriteId = AddPseudoFieldObject(0x8C, SpriteCallbackDummy, 112, 80, 0);
+
+    gSprites[spriteId].coordOffsetEnabled = FALSE;
+
+    if (VarGet(0x40B4) == 2)
+    {
+        StartSpriteAnim(&gSprites[spriteId], FieldObjectDirectionToImageAnimId(4));
+    }
+    else
+    {
+        StartSpriteAnim(&gSprites[spriteId], FieldObjectDirectionToImageAnimId(3));
+    }
+}
+
+void sub_80FB768(void)
+{
+    sub_80FB6EC();
+    gMapObjects[gPlayerAvatar.mapObjectId].mapobj_bit_13 = TRUE;
+    pal_fill_black();
+    CreateTask(Task_HandlePorthole, 80);
+    ScriptContext2_Enable();
+}
+
+extern void saved_warp2_set(int unused, s8 mapGroup, s8 mapNum, s8 warpId);
+extern void sub_80AF8B8(void);
+
+void sub_80FB7A4(void)
+{
+    FlagSet(SYS_CRUISE_MODE);
+    FlagSet(0x4001);
+    FlagSet(0x4000);
+    saved_warp2_set(0, gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum, -1);
+    sub_80FB59C();
+    sub_80AF8B8();
+}