Port field_camera from Emerald

14 files changed, 619 insertions, 1351 deletions

diff --git a/asm/bike.s b/asm/bike.s
index 5bba18d71..e805ccc38 100644
--- a/asm/bike.s
+++ b/asm/bike.s
@@ -718,7 +718,7 @@ StartTransitionToFlipBikeState: @ 80BD5C8
 	push {r4,lr}
 	lsls r0, 24
 	lsrs r2, r0, 24
-	ldr r1, _080BD5F0 @ =gUnknown_2036E2C
+	ldr r1, _080BD5F0 @ =gUnusedBikeCameraAheadPanback
 	movs r0, 0
 	strb r0, [r1]
 	ldr r0, _080BD5F4 @ =gPlayerAvatar
@@ -733,7 +733,7 @@ StartTransitionToFlipBikeState: @ 80BD5C8
 	bl Overworld_PlaySpecialMapMusic
 	b _080BD618
 	.align 2, 0
-_080BD5F0: .4byte gUnknown_2036E2C
+_080BD5F0: .4byte gUnusedBikeCameraAheadPanback
 _080BD5F4: .4byte gPlayerAvatar
 _080BD5F8:
 	adds r0, r2, 0
diff --git a/asm/event_object_movement.s b/asm/event_object_movement.s
index d09ee8e97..ec39d9f08 100644
--- a/asm/event_object_movement.s
+++ b/asm/event_object_movement.s
@@ -12924,7 +12924,7 @@ SetSpritePosToMapCoords: @ 8063B1C
 	ldr r0, _08063BB0 @ =gTotalCameraPixelOffsetX
 	ldrh r0, [r0]
 	negs r0, r0
-	ldr r1, _08063BB4 @ =gUnknown_3005050
+	ldr r1, _08063BB4 @ =gFieldCamera
 	ldr r2, [r1, 0x10]
 	subs r0, r2
 	lsls r0, 16
@@ -12993,7 +12993,7 @@ _08063B7C:
 	bx r0
 	.align 2, 0
 _08063BB0: .4byte gTotalCameraPixelOffsetX
-_08063BB4: .4byte gUnknown_3005050
+_08063BB4: .4byte gFieldCamera
 _08063BB8: .4byte gTotalCameraPixelOffsetY
 _08063BBC: .4byte 0xfff00000
 _08063BC0: .4byte gSaveBlock1Ptr
@@ -13046,7 +13046,7 @@ GetObjectEventMovingCameraOffset: @ 8063C10
 	movs r0, 0
 	strh r0, [r2]
 	strh r0, [r1]
-	ldr r3, _08063C4C @ =gUnknown_3005050
+	ldr r3, _08063C4C @ =gFieldCamera
 	ldr r0, [r3, 0x10]
 	cmp r0, 0
 	ble _08063C26
@@ -13076,7 +13076,7 @@ _08063C48:
 	pop {r0}
 	bx r0
 	.align 2, 0
-_08063C4C: .4byte gUnknown_3005050
+_08063C4C: .4byte gFieldCamera
 	thumb_func_end GetObjectEventMovingCameraOffset
 
 	thumb_func_start ObjectEventMoveDestCoords
diff --git a/asm/field_camera.s b/asm/field_camera.s
index aa906d6fc..2428f2984 100644
--- a/asm/field_camera.s
+++ b/asm/field_camera.s
@@ -5,1295 +5,4 @@
 
 	.text
 
-	thumb_func_start move_tilemap_camera_to_upper_left_corner_
-move_tilemap_camera_to_upper_left_corner_: @ 805A5A8
-	movs r1, 0
-	strb r1, [r0, 0x2]
-	strb r1, [r0, 0x3]
-	strb r1, [r0]
-	strb r1, [r0, 0x1]
-	movs r1, 0x1
-	strb r1, [r0, 0x4]
-	bx lr
-	thumb_func_end move_tilemap_camera_to_upper_left_corner_
-
-	thumb_func_start tilemap_move_something
-tilemap_move_something: @ 805A5B8
-	ldrb r3, [r0, 0x2]
-	adds r3, r1
-	strb r3, [r0, 0x2]
-	ldrb r1, [r0, 0x2]
-	movs r3, 0x1F
-	ands r1, r3
-	strb r1, [r0, 0x2]
-	ldrb r1, [r0, 0x3]
-	adds r1, r2
-	strb r1, [r0, 0x3]
-	ldrb r1, [r0, 0x3]
-	ands r1, r3
-	strb r1, [r0, 0x3]
-	bx lr
-	thumb_func_end tilemap_move_something
-
-	thumb_func_start coords8_add
-coords8_add: @ 805A5D4
-	ldrb r3, [r0]
-	adds r3, r1
-	strb r3, [r0]
-	ldrb r1, [r0, 0x1]
-	adds r1, r2
-	strb r1, [r0, 0x1]
-	bx lr
-	thumb_func_end coords8_add
-
-	thumb_func_start move_tilemap_camera_to_upper_left_corner
-move_tilemap_camera_to_upper_left_corner: @ 805A5E4
-	push {lr}
-	ldr r0, _0805A5F0 @ =gUnknown_3000E90
-	bl move_tilemap_camera_to_upper_left_corner_
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A5F0: .4byte gUnknown_3000E90
-	thumb_func_end move_tilemap_camera_to_upper_left_corner
-
-	thumb_func_start FieldUpdateBgTilemapScroll
-FieldUpdateBgTilemapScroll: @ 805A5F4
-	push {r4,r5,lr}
-	ldr r1, _0805A64C @ =gUnknown_3000E90
-	ldr r0, _0805A650 @ =gUnknown_3000E98
-	movs r2, 0
-	ldrsh r5, [r0, r2]
-	ldrb r0, [r1]
-	adds r5, r0
-	ldr r0, _0805A654 @ =gUnknown_3000E9A
-	movs r2, 0
-	ldrsh r4, [r0, r2]
-	ldrb r1, [r1, 0x1]
-	adds r4, r1
-	adds r4, 0x8
-	lsls r5, 16
-	lsrs r5, 16
-	movs r0, 0x14
-	adds r1, r5, 0
-	bl SetGpuReg
-	lsls r4, 16
-	lsrs r4, 16
-	movs r0, 0x16
-	adds r1, r4, 0
-	bl SetGpuReg
-	movs r0, 0x18
-	adds r1, r5, 0
-	bl SetGpuReg
-	movs r0, 0x1A
-	adds r1, r4, 0
-	bl SetGpuReg
-	movs r0, 0x1C
-	adds r1, r5, 0
-	bl SetGpuReg
-	movs r0, 0x1E
-	adds r1, r4, 0
-	bl SetGpuReg
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A64C: .4byte gUnknown_3000E90
-_0805A650: .4byte gUnknown_3000E98
-_0805A654: .4byte gUnknown_3000E9A
-	thumb_func_end FieldUpdateBgTilemapScroll
-
-	thumb_func_start sub_805A658
-sub_805A658: @ 805A658
-	push {r4,lr}
-	ldr r3, _0805A678 @ =gUnknown_3000E90
-	ldr r2, _0805A67C @ =gUnknown_3000E98
-	ldrh r2, [r2]
-	ldrb r4, [r3]
-	adds r2, r4
-	strh r2, [r0]
-	ldr r0, _0805A680 @ =gUnknown_3000E9A
-	ldrh r0, [r0]
-	ldrb r3, [r3, 0x1]
-	adds r0, r3
-	adds r0, 0x8
-	strh r0, [r1]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A678: .4byte gUnknown_3000E90
-_0805A67C: .4byte gUnknown_3000E98
-_0805A680: .4byte gUnknown_3000E9A
-	thumb_func_end sub_805A658
-
-	thumb_func_start DrawWholeMapView
-DrawWholeMapView: @ 805A684
-	push {lr}
-	ldr r0, _0805A6A0 @ =gSaveBlock1Ptr
-	ldr r1, [r0]
-	movs r2, 0
-	ldrsh r0, [r1, r2]
-	movs r2, 0x2
-	ldrsh r1, [r1, r2]
-	ldr r2, _0805A6A4 @ =gMapHeader
-	ldr r2, [r2]
-	bl DrawWholeMapViewInternal
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A6A0: .4byte gSaveBlock1Ptr
-_0805A6A4: .4byte gMapHeader
-	thumb_func_end DrawWholeMapView
-
-	thumb_func_start DrawWholeMapViewInternal
-DrawWholeMapViewInternal: @ 805A6A8
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	mov r10, r0
-	mov r9, r1
-	mov r8, r2
-	movs r1, 0
-_0805A6BC:
-	ldr r2, _0805A728 @ =gUnknown_3000E90
-	ldrb r0, [r2, 0x3]
-	adds r0, r1, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A6D0
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A6D0:
-	lsls r6, r0, 5
-	movs r4, 0
-	adds r7, r1, 0x2
-	str r7, [sp]
-	lsrs r5, r1, 1
-_0805A6DA:
-	ldr r1, _0805A728 @ =gUnknown_3000E90
-	ldrb r0, [r1, 0x2]
-	adds r0, r4, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A6EE
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A6EE:
-	adds r1, r6, r0
-	lsls r1, 16
-	lsrs r1, 16
-	lsrs r2, r4, 1
-	add r2, r10
-	mov r0, r8
-	mov r7, r9
-	adds r3, r7, r5
-	bl sub_805A948
-	adds r0, r4, 0x2
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x1F
-	bls _0805A6DA
-	ldr r1, [sp]
-	lsls r0, r1, 24
-	lsrs r1, r0, 24
-	cmp r1, 0x1F
-	bls _0805A6BC
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A728: .4byte gUnknown_3000E90
-	thumb_func_end DrawWholeMapViewInternal
-
-	thumb_func_start RedrawMapSlicesForCameraUpdate
-RedrawMapSlicesForCameraUpdate: @ 805A72C
-	push {r4-r7,lr}
-	adds r5, r0, 0
-	adds r6, r1, 0
-	adds r7, r2, 0
-	ldr r0, _0805A774 @ =gMapHeader
-	ldr r4, [r0]
-	cmp r6, 0
-	ble _0805A744
-	adds r0, r5, 0
-	adds r1, r4, 0
-	bl RedrawMapSliceWest
-_0805A744:
-	cmp r6, 0
-	bge _0805A750
-	adds r0, r5, 0
-	adds r1, r4, 0
-	bl RedrawMapSliceEast
-_0805A750:
-	cmp r7, 0
-	ble _0805A75C
-	adds r0, r5, 0
-	adds r1, r4, 0
-	bl RedrawMapSliceNorth
-_0805A75C:
-	cmp r7, 0
-	bge _0805A768
-	adds r0, r5, 0
-	adds r1, r4, 0
-	bl RedrawMapSliceSouth
-_0805A768:
-	movs r0, 0x1
-	strb r0, [r5, 0x4]
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A774: .4byte gMapHeader
-	thumb_func_end RedrawMapSlicesForCameraUpdate
-
-	thumb_func_start RedrawMapSliceNorth
-RedrawMapSliceNorth: @ 805A778
-	push {r4-r7,lr}
-	adds r5, r0, 0
-	adds r7, r1, 0
-	ldrb r0, [r5, 0x3]
-	adds r0, 0x1C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A790
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A790:
-	lsls r6, r0, 5
-	movs r4, 0
-_0805A794:
-	ldrb r0, [r5, 0x2]
-	adds r0, r4, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A7A6
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A7A6:
-	adds r1, r6, r0
-	lsls r1, 16
-	lsrs r1, 16
-	ldr r0, _0805A7D4 @ =gSaveBlock1Ptr
-	ldr r3, [r0]
-	movs r0, 0
-	ldrsh r2, [r3, r0]
-	lsrs r0, r4, 1
-	adds r2, r0
-	movs r0, 0x2
-	ldrsh r3, [r3, r0]
-	adds r3, 0xE
-	adds r0, r7, 0
-	bl sub_805A948
-	adds r0, r4, 0x2
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x1F
-	bls _0805A794
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A7D4: .4byte gSaveBlock1Ptr
-	thumb_func_end RedrawMapSliceNorth
-
-	thumb_func_start RedrawMapSliceSouth
-RedrawMapSliceSouth: @ 805A7D8
-	push {r4-r7,lr}
-	adds r5, r0, 0
-	adds r7, r1, 0
-	ldrb r0, [r5, 0x3]
-	lsls r6, r0, 5
-	movs r4, 0
-_0805A7E4:
-	ldrb r0, [r5, 0x2]
-	adds r0, r4, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A7F6
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A7F6:
-	adds r1, r6, r0
-	ldr r0, _0805A820 @ =gSaveBlock1Ptr
-	ldr r3, [r0]
-	movs r0, 0
-	ldrsh r2, [r3, r0]
-	lsrs r0, r4, 1
-	adds r2, r0
-	movs r0, 0x2
-	ldrsh r3, [r3, r0]
-	adds r0, r7, 0
-	bl sub_805A948
-	adds r0, r4, 0x2
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x1F
-	bls _0805A7E4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A820: .4byte gSaveBlock1Ptr
-	thumb_func_end RedrawMapSliceSouth
-
-	thumb_func_start RedrawMapSliceEast
-RedrawMapSliceEast: @ 805A824
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r5, r0, 0
-	mov r8, r1
-	ldrb r6, [r5, 0x2]
-	movs r4, 0
-_0805A832:
-	ldrb r0, [r5, 0x3]
-	adds r0, r4, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A844
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A844:
-	lsls r1, r0, 5
-	adds r1, r6
-	lsls r1, 16
-	lsrs r1, 16
-	ldr r0, _0805A878 @ =gSaveBlock1Ptr
-	ldr r0, [r0]
-	movs r3, 0
-	ldrsh r2, [r0, r3]
-	movs r7, 0x2
-	ldrsh r3, [r0, r7]
-	lsrs r0, r4, 1
-	adds r3, r0
-	mov r0, r8
-	bl sub_805A948
-	adds r0, r4, 0x2
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x1F
-	bls _0805A832
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A878: .4byte gSaveBlock1Ptr
-	thumb_func_end RedrawMapSliceEast
-
-	thumb_func_start RedrawMapSliceWest
-RedrawMapSliceWest: @ 805A87C
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, 0
-	mov r8, r1
-	ldrb r0, [r6, 0x2]
-	adds r0, 0x1C
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r5, 0x1F
-	bls _0805A89A
-	adds r0, r5, 0
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r5, r0, 24
-_0805A89A:
-	movs r4, 0
-_0805A89C:
-	ldrb r0, [r6, 0x3]
-	adds r0, r4, r0
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1F
-	bls _0805A8AE
-	subs r0, 0x20
-	lsls r0, 24
-	lsrs r0, 24
-_0805A8AE:
-	lsls r1, r0, 5
-	adds r1, r5
-	lsls r1, 16
-	lsrs r1, 16
-	ldr r0, _0805A8E4 @ =gSaveBlock1Ptr
-	ldr r0, [r0]
-	movs r3, 0
-	ldrsh r2, [r0, r3]
-	adds r2, 0xE
-	movs r7, 0x2
-	ldrsh r3, [r0, r7]
-	lsrs r0, r4, 1
-	adds r3, r0
-	mov r0, r8
-	bl sub_805A948
-	adds r0, r4, 0x2
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x1F
-	bls _0805A89C
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A8E4: .4byte gSaveBlock1Ptr
-	thumb_func_end RedrawMapSliceWest
-
-	thumb_func_start CurrentMapDrawMetatileAt
-CurrentMapDrawMetatileAt: @ 805A8E8
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	adds r5, r1, 0
-	ldr r0, _0805A914 @ =gUnknown_3000E90
-	adds r1, r4, 0
-	adds r2, r5, 0
-	bl MapPosToBgTilemapOffset
-	adds r1, r0, 0
-	cmp r1, 0
-	blt _0805A90E
-	ldr r0, _0805A918 @ =gMapHeader
-	ldr r0, [r0]
-	lsls r1, 16
-	lsrs r1, 16
-	adds r2, r4, 0
-	adds r3, r5, 0
-	bl sub_805A948
-_0805A90E:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A914: .4byte gUnknown_3000E90
-_0805A918: .4byte gMapHeader
-	thumb_func_end CurrentMapDrawMetatileAt
-
-	thumb_func_start DrawDoorMetatileAt
-DrawDoorMetatileAt: @ 805A91C
-	push {r4,r5,lr}
-	adds r3, r0, 0
-	adds r4, r1, 0
-	adds r5, r2, 0
-	ldr r0, _0805A944 @ =gUnknown_3000E90
-	adds r1, r3, 0
-	adds r2, r4, 0
-	bl MapPosToBgTilemapOffset
-	cmp r0, 0
-	blt _0805A93E
-	lsls r2, r0, 16
-	lsrs r2, 16
-	movs r0, 0x1
-	adds r1, r5, 0
-	bl DrawMetatile
-_0805A93E:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A944: .4byte gUnknown_3000E90
-	thumb_func_end DrawDoorMetatileAt
-
-	thumb_func_start sub_805A948
-sub_805A948: @ 805A948
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r5, r0, 0
-	adds r6, r2, 0
-	adds r7, r3, 0
-	lsls r1, 16
-	lsrs r1, 16
-	mov r8, r1
-	adds r0, r6, 0
-	adds r1, r7, 0
-	bl MapGridGetMetatileIdAt
-	lsls r0, 16
-	lsrs r4, r0, 16
-	movs r0, 0x80
-	lsls r0, 3
-	cmp r4, r0
-	bls _0805A970
-	movs r4, 0
-_0805A970:
-	ldr r0, _0805A97C @ =0x0000027f
-	cmp r4, r0
-	bhi _0805A980
-	ldr r0, [r5, 0x10]
-	ldr r5, [r0, 0xC]
-	b _0805A98C
-	.align 2, 0
-_0805A97C: .4byte 0x0000027f
-_0805A980:
-	ldr r0, [r5, 0x14]
-	ldr r5, [r0, 0xC]
-	ldr r1, _0805A9B0 @ =0xfffffd80
-	adds r0, r4, r1
-	lsls r0, 16
-	lsrs r4, r0, 16
-_0805A98C:
-	lsls r0, r6, 16
-	asrs r0, 16
-	lsls r1, r7, 16
-	asrs r1, 16
-	bl MapGridGetMetatileLayerTypeAt
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r4, 4
-	adds r1, r5, r1
-	mov r2, r8
-	bl DrawMetatile
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805A9B0: .4byte 0xfffffd80
-	thumb_func_end sub_805A948
-
-	thumb_func_start DrawMetatile
-DrawMetatile: @ 805A9B4
-	push {r4,lr}
-	adds r4, r1, 0
-	lsls r2, 16
-	lsrs r2, 16
-	cmp r0, 0x1
-	beq _0805AA0C
-	cmp r0, 0x1
-	bgt _0805A9CA
-	cmp r0, 0
-	beq _0805AA6C
-	b _0805AABE
-_0805A9CA:
-	cmp r0, 0x2
-	bne _0805AABE
-	ldr r0, _0805AA04 @ =gUnknown_300501C
-	ldr r0, [r0]
-	lsls r3, r2, 1
-	adds r0, r3, r0
-	ldrh r1, [r4]
-	strh r1, [r0]
-	ldrh r1, [r4, 0x2]
-	strh r1, [r0, 0x2]
-	adds r2, r0, 0
-	adds r2, 0x40
-	ldrh r1, [r4, 0x4]
-	strh r1, [r2]
-	adds r0, 0x42
-	ldrh r1, [r4, 0x6]
-	strh r1, [r0]
-	ldr r0, _0805AA08 @ =gUnknown_3005014
-	ldr r0, [r0]
-	adds r0, r3, r0
-	movs r2, 0
-	strh r2, [r0]
-	strh r2, [r0, 0x2]
-	adds r1, r0, 0
-	adds r1, 0x40
-	strh r2, [r1]
-	adds r0, 0x42
-	strh r2, [r0]
-	b _0805AAA2
-	.align 2, 0
-_0805AA04: .4byte gUnknown_300501C
-_0805AA08: .4byte gUnknown_3005014
-_0805AA0C:
-	ldr r0, _0805AA60 @ =gUnknown_300501C
-	ldr r0, [r0]
-	lsls r3, r2, 1
-	adds r0, r3, r0
-	ldrh r1, [r4]
-	strh r1, [r0]
-	ldrh r1, [r4, 0x2]
-	strh r1, [r0, 0x2]
-	adds r2, r0, 0
-	adds r2, 0x40
-	ldrh r1, [r4, 0x4]
-	strh r1, [r2]
-	adds r0, 0x42
-	ldrh r1, [r4, 0x6]
-	strh r1, [r0]
-	ldr r0, _0805AA64 @ =gUnknown_3005014
-	ldr r0, [r0]
-	adds r0, r3, r0
-	ldrh r1, [r4, 0x8]
-	strh r1, [r0]
-	ldrh r1, [r4, 0xA]
-	strh r1, [r0, 0x2]
-	adds r2, r0, 0
-	adds r2, 0x40
-	ldrh r1, [r4, 0xC]
-	strh r1, [r2]
-	adds r0, 0x42
-	ldrh r1, [r4, 0xE]
-	strh r1, [r0]
-	ldr r0, _0805AA68 @ =gUnknown_3005018
-	ldr r0, [r0]
-	adds r3, r0
-	movs r1, 0
-	strh r1, [r3]
-	strh r1, [r3, 0x2]
-	adds r0, r3, 0
-	adds r0, 0x40
-	strh r1, [r0]
-	adds r3, 0x42
-	strh r1, [r3]
-	b _0805AABE
-	.align 2, 0
-_0805AA60: .4byte gUnknown_300501C
-_0805AA64: .4byte gUnknown_3005014
-_0805AA68: .4byte gUnknown_3005018
-_0805AA6C:
-	ldr r0, _0805AAD8 @ =gUnknown_300501C
-	ldr r0, [r0]
-	lsls r3, r2, 1
-	adds r0, r3, r0
-	ldr r1, _0805AADC @ =0x00003014
-	adds r2, r1, 0
-	strh r2, [r0]
-	strh r2, [r0, 0x2]
-	adds r1, r0, 0
-	adds r1, 0x40
-	strh r2, [r1]
-	adds r0, 0x42
-	strh r2, [r0]
-	ldr r0, _0805AAE0 @ =gUnknown_3005014
-	ldr r0, [r0]
-	adds r0, r3, r0
-	ldrh r1, [r4]
-	strh r1, [r0]
-	ldrh r1, [r4, 0x2]
-	strh r1, [r0, 0x2]
-	adds r2, r0, 0
-	adds r2, 0x40
-	ldrh r1, [r4, 0x4]
-	strh r1, [r2]
-	adds r0, 0x42
-	ldrh r1, [r4, 0x6]
-	strh r1, [r0]
-_0805AAA2:
-	ldr r0, _0805AAE4 @ =gUnknown_3005018
-	ldr r0, [r0]
-	adds r3, r0
-	ldrh r0, [r4, 0x8]
-	strh r0, [r3]
-	ldrh r0, [r4, 0xA]
-	strh r0, [r3, 0x2]
-	adds r1, r3, 0
-	adds r1, 0x40
-	ldrh r0, [r4, 0xC]
-	strh r0, [r1]
-	adds r3, 0x42
-	ldrh r0, [r4, 0xE]
-	strh r0, [r3]
-_0805AABE:
-	movs r0, 0x1
-	bl ScheduleBgCopyTilemapToVram
-	movs r0, 0x2
-	bl ScheduleBgCopyTilemapToVram
-	movs r0, 0x3
-	bl ScheduleBgCopyTilemapToVram
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805AAD8: .4byte gUnknown_300501C
-_0805AADC: .4byte 0x00003014
-_0805AAE0: .4byte gUnknown_3005014
-_0805AAE4: .4byte gUnknown_3005018
-	thumb_func_end DrawMetatile
-
-	thumb_func_start MapPosToBgTilemapOffset
-MapPosToBgTilemapOffset: @ 805AAE8
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	ldr r0, _0805AB18 @ =gSaveBlock1Ptr
-	ldr r3, [r0]
-	movs r5, 0
-	ldrsh r0, [r3, r5]
-	subs r1, r0
-	lsls r1, 1
-	cmp r1, 0x1F
-	bhi _0805AB12
-	ldrb r0, [r4, 0x2]
-	adds r1, r0
-	cmp r1, 0x1F
-	ble _0805AB06
-	subs r1, 0x20
-_0805AB06:
-	movs r5, 0x2
-	ldrsh r0, [r3, r5]
-	subs r0, r2, r0
-	lsls r2, r0, 1
-	cmp r2, 0x1F
-	bls _0805AB1C
-_0805AB12:
-	movs r0, 0x1
-	negs r0, r0
-	b _0805AB2A
-	.align 2, 0
-_0805AB18: .4byte gSaveBlock1Ptr
-_0805AB1C:
-	ldrb r0, [r4, 0x3]
-	adds r2, r0
-	cmp r2, 0x1F
-	ble _0805AB26
-	subs r2, 0x20
-_0805AB26:
-	lsls r0, r2, 5
-	adds r0, r1
-_0805AB2A:
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	thumb_func_end MapPosToBgTilemapOffset
-
-	thumb_func_start CameraUpdateCallback
-CameraUpdateCallback: @ 805AB30
-	push {lr}
-	adds r3, r0, 0
-	ldr r2, [r3, 0x4]
-	cmp r2, 0
-	beq _0805AB50
-	ldr r1, _0805AB54 @ =gSprites
-	lsls r0, r2, 4
-	adds r0, r2
-	lsls r0, 2
-	adds r0, r1
-	movs r2, 0x32
-	ldrsh r1, [r0, r2]
-	str r1, [r3, 0x8]
-	movs r1, 0x34
-	ldrsh r0, [r0, r1]
-	str r0, [r3, 0xC]
-_0805AB50:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805AB54: .4byte gSprites
-	thumb_func_end CameraUpdateCallback
-
-	thumb_func_start ResetCameraUpdateInfo
-ResetCameraUpdateInfo: @ 805AB58
-	ldr r1, _0805AB6C @ =gUnknown_3005050
-	movs r0, 0
-	str r0, [r1, 0x8]
-	str r0, [r1, 0xC]
-	str r0, [r1, 0x10]
-	str r0, [r1, 0x14]
-	str r0, [r1, 0x4]
-	str r0, [r1]
-	bx lr
-	.align 2, 0
-_0805AB6C: .4byte gUnknown_3005050
-	thumb_func_end ResetCameraUpdateInfo
-
-	thumb_func_start InitCameraUpdateCallback
-InitCameraUpdateCallback: @ 805AB70
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r4, _0805ABA4 @ =gUnknown_3005050
-	ldr r1, [r4, 0x4]
-	cmp r1, 0
-	beq _0805AB8C
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	ldr r1, _0805ABA8 @ =gSprites
-	adds r0, r1
-	bl DestroySprite
-_0805AB8C:
-	adds r0, r5, 0
-	bl AddCameraObject
-	lsls r0, 24
-	lsrs r0, 24
-	str r0, [r4, 0x4]
-	ldr r0, _0805ABAC @ =CameraUpdateCallback
-	str r0, [r4]
-	movs r0, 0
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0805ABA4: .4byte gUnknown_3005050
-_0805ABA8: .4byte gSprites
-_0805ABAC: .4byte CameraUpdateCallback
-	thumb_func_end InitCameraUpdateCallback
-
-	thumb_func_start CameraUpdate
-CameraUpdate: @ 805ABB0
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	ldr r6, _0805ACA4 @ =gUnknown_3005050
-	ldr r1, [r6]
-	cmp r1, 0
-	beq _0805ABC4
-	adds r0, r6, 0
-	bl _call_via_r1
-_0805ABC4:
-	ldr r7, [r6, 0x8]
-	ldr r0, [r6, 0xC]
-	mov r8, r0
-	movs r4, 0
-	movs r5, 0
-	ldr r1, [r6, 0x10]
-	ldr r0, [r6, 0x14]
-	cmp r1, 0
-	bne _0805ABE2
-	cmp r7, 0
-	beq _0805ABE2
-	subs r4, 0x1
-	cmp r7, 0
-	ble _0805ABE2
-	movs r4, 0x1
-_0805ABE2:
-	cmp r0, 0
-	bne _0805ABF6
-	mov r2, r8
-	cmp r2, 0
-	beq _0805ABF6
-	movs r5, 0x1
-	negs r5, r5
-	cmp r2, 0
-	ble _0805ABF6
-	movs r5, 0x1
-_0805ABF6:
-	cmp r1, 0
-	beq _0805AC08
-	cmn r1, r7
-	bne _0805AC08
-	movs r4, 0x1
-	negs r4, r4
-	cmp r7, 0
-	ble _0805AC08
-	movs r4, 0x1
-_0805AC08:
-	cmp r0, 0
-	beq _0805AC1C
-	mov r3, r8
-	cmn r0, r3
-	bne _0805AC1C
-	movs r4, 0x1
-	negs r4, r4
-	cmp r3, 0
-	ble _0805AC1C
-	movs r4, 0x1
-_0805AC1C:
-	ldr r2, _0805ACA4 @ =gUnknown_3005050
-	ldr r0, [r2, 0x10]
-	adds r1, r0, r7
-	str r1, [r2, 0x10]
-	adds r0, r1, 0
-	cmp r1, 0
-	bge _0805AC2C
-	adds r0, 0xF
-_0805AC2C:
-	asrs r0, 4
-	lsls r0, 4
-	subs r0, r1, r0
-	str r0, [r2, 0x10]
-	ldr r0, [r2, 0x14]
-	mov r3, r8
-	adds r1, r0, r3
-	str r1, [r2, 0x14]
-	adds r0, r1, 0
-	cmp r1, 0
-	bge _0805AC44
-	adds r0, 0xF
-_0805AC44:
-	asrs r0, 4
-	lsls r0, 4
-	subs r0, r1, r0
-	str r0, [r2, 0x14]
-	cmp r4, 0
-	bne _0805AC54
-	cmp r5, 0
-	beq _0805AC7E
-_0805AC54:
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl CameraMove
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl UpdateObjectEventsForCameraUpdate
-	ldr r6, _0805ACA8 @ =gUnknown_3000E90
-	lsls r4, 1
-	lsls r5, 1
-	adds r0, r6, 0
-	adds r1, r4, 0
-	adds r2, r5, 0
-	bl tilemap_move_something
-	adds r0, r6, 0
-	adds r1, r4, 0
-	adds r2, r5, 0
-	bl RedrawMapSlicesForCameraUpdate
-_0805AC7E:
-	ldr r0, _0805ACA8 @ =gUnknown_3000E90
-	adds r1, r7, 0
-	mov r2, r8
-	bl coords8_add
-	ldr r1, _0805ACAC @ =gTotalCameraPixelOffsetX
-	ldrh r0, [r1]
-	subs r0, r7
-	strh r0, [r1]
-	ldr r1, _0805ACB0 @ =gTotalCameraPixelOffsetY
-	ldrh r0, [r1]
-	mov r2, r8
-	subs r0, r2
-	strh r0, [r1]
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805ACA4: .4byte gUnknown_3005050
-_0805ACA8: .4byte gUnknown_3000E90
-_0805ACAC: .4byte gTotalCameraPixelOffsetX
-_0805ACB0: .4byte gTotalCameraPixelOffsetY
-	thumb_func_end CameraUpdate
-
-	thumb_func_start sub_805ACB4
-sub_805ACB4: @ 805ACB4
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	adds r5, r1, 0
-	bl CameraMove
-	lsls r0, r4, 16
-	asrs r0, 16
-	lsls r1, r5, 16
-	asrs r1, 16
-	bl UpdateObjectEventsForCameraUpdate
-	bl DrawWholeMapView
-	ldr r1, _0805ACE8 @ =gTotalCameraPixelOffsetX
-	lsls r4, 4
-	ldrh r0, [r1]
-	subs r0, r4
-	strh r0, [r1]
-	ldr r1, _0805ACEC @ =gTotalCameraPixelOffsetY
-	lsls r5, 4
-	ldrh r0, [r1]
-	subs r0, r5
-	strh r0, [r1]
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805ACE8: .4byte gTotalCameraPixelOffsetX
-_0805ACEC: .4byte gTotalCameraPixelOffsetY
-	thumb_func_end sub_805ACB4
-
-	thumb_func_start sub_805ACF0
-sub_805ACF0: @ 805ACF0
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	ldr r4, _0805ADCC @ =gUnknown_3005050
-	ldr r1, [r4]
-	cmp r1, 0
-	beq _0805AD04
-	adds r0, r4, 0
-	bl _call_via_r1
-_0805AD04:
-	ldr r7, [r4, 0x8]
-	ldr r0, [r4, 0xC]
-	mov r8, r0
-	movs r5, 0
-	movs r6, 0
-	ldr r1, [r4, 0x10]
-	ldr r0, [r4, 0x14]
-	cmp r1, 0
-	bne _0805AD22
-	cmp r7, 0
-	beq _0805AD22
-	subs r5, 0x1
-	cmp r7, 0
-	ble _0805AD22
-	movs r5, 0x1
-_0805AD22:
-	cmp r0, 0
-	bne _0805AD36
-	mov r2, r8
-	cmp r2, 0
-	beq _0805AD36
-	movs r6, 0x1
-	negs r6, r6
-	cmp r2, 0
-	ble _0805AD36
-	movs r6, 0x1
-_0805AD36:
-	cmp r1, 0
-	beq _0805AD48
-	cmn r1, r7
-	bne _0805AD48
-	movs r5, 0x1
-	negs r5, r5
-	cmp r7, 0
-	ble _0805AD48
-	movs r5, 0x1
-_0805AD48:
-	cmp r0, 0
-	beq _0805AD5C
-	mov r3, r8
-	cmn r0, r3
-	bne _0805AD5C
-	movs r5, 0x1
-	negs r5, r5
-	cmp r3, 0
-	ble _0805AD5C
-	movs r5, 0x1
-_0805AD5C:
-	ldr r2, _0805ADCC @ =gUnknown_3005050
-	ldr r0, [r2, 0x10]
-	adds r1, r0, r7
-	str r1, [r2, 0x10]
-	adds r0, r1, 0
-	cmp r1, 0
-	bge _0805AD6C
-	adds r0, 0xF
-_0805AD6C:
-	asrs r0, 4
-	lsls r0, 4
-	subs r0, r1, r0
-	str r0, [r2, 0x10]
-	ldr r0, [r2, 0x14]
-	mov r3, r8
-	adds r1, r0, r3
-	str r1, [r2, 0x14]
-	adds r0, r1, 0
-	cmp r1, 0
-	bge _0805AD84
-	adds r0, 0xF
-_0805AD84:
-	asrs r0, 4
-	lsls r0, 4
-	subs r0, r1, r0
-	str r0, [r2, 0x14]
-	cmp r5, 0
-	bne _0805AD94
-	cmp r6, 0
-	beq _0805ADB6
-_0805AD94:
-	adds r0, r5, 0
-	adds r1, r6, 0
-	bl CameraMove
-	ldr r4, _0805ADD0 @ =gUnknown_3000E90
-	lsls r5, 1
-	lsls r6, 1
-	adds r0, r4, 0
-	adds r1, r5, 0
-	adds r2, r6, 0
-	bl tilemap_move_something
-	adds r0, r4, 0
-	adds r1, r5, 0
-	adds r2, r6, 0
-	bl RedrawMapSlicesForCameraUpdate
-_0805ADB6:
-	ldr r0, _0805ADD0 @ =gUnknown_3000E90
-	adds r1, r7, 0
-	mov r2, r8
-	bl coords8_add
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805ADCC: .4byte gUnknown_3005050
-_0805ADD0: .4byte gUnknown_3000E90
-	thumb_func_end sub_805ACF0
-
-	thumb_func_start SetCameraPanningCallback
-SetCameraPanningCallback: @ 805ADD4
-	ldr r1, _0805ADDC @ =gUnknown_3000EA0
-	str r0, [r1]
-	bx lr
-	.align 2, 0
-_0805ADDC: .4byte gUnknown_3000EA0
-	thumb_func_end SetCameraPanningCallback
-
-	thumb_func_start SetCameraPanning
-SetCameraPanning: @ 805ADE0
-	ldr r2, _0805ADF0 @ =gUnknown_3000E98
-	strh r0, [r2]
-	ldr r0, _0805ADF4 @ =gUnknown_3000E9A
-	lsls r1, 16
-	asrs r1, 16
-	adds r1, 0x20
-	strh r1, [r0]
-	bx lr
-	.align 2, 0
-_0805ADF0: .4byte gUnknown_3000E98
-_0805ADF4: .4byte gUnknown_3000E9A
-	thumb_func_end SetCameraPanning
-
-	thumb_func_start InstallCameraPanAheadCallback
-InstallCameraPanAheadCallback: @ 805ADF8
-	ldr r1, _0805AE14 @ =gUnknown_3000EA0
-	ldr r0, _0805AE18 @ =CameraPanningCB_PanAhead
-	str r0, [r1]
-	ldr r1, _0805AE1C @ =gUnknown_3000E9C
-	movs r0, 0
-	strb r0, [r1]
-	ldr r1, _0805AE20 @ =gUnknown_3000E98
-	movs r0, 0
-	strh r0, [r1]
-	ldr r1, _0805AE24 @ =gUnknown_3000E9A
-	movs r0, 0x20
-	strh r0, [r1]
-	bx lr
-	.align 2, 0
-_0805AE14: .4byte gUnknown_3000EA0
-_0805AE18: .4byte CameraPanningCB_PanAhead
-_0805AE1C: .4byte gUnknown_3000E9C
-_0805AE20: .4byte gUnknown_3000E98
-_0805AE24: .4byte gUnknown_3000E9A
-	thumb_func_end InstallCameraPanAheadCallback
-
-	thumb_func_start UpdateCameraPanning
-UpdateCameraPanning: @ 805AE28
-	push {lr}
-	ldr r0, _0805AE58 @ =gUnknown_3000EA0
-	ldr r0, [r0]
-	cmp r0, 0
-	beq _0805AE36
-	bl _call_via_r0
-_0805AE36:
-	ldr r2, _0805AE5C @ =gSpriteCoordOffsetX
-	ldr r0, _0805AE60 @ =gTotalCameraPixelOffsetX
-	ldr r1, _0805AE64 @ =gUnknown_3000E98
-	ldrh r0, [r0]
-	ldrh r1, [r1]
-	subs r0, r1
-	strh r0, [r2]
-	ldr r2, _0805AE68 @ =gSpriteCoordOffsetY
-	ldr r0, _0805AE6C @ =gTotalCameraPixelOffsetY
-	ldr r1, _0805AE70 @ =gUnknown_3000E9A
-	ldrh r0, [r0]
-	ldrh r1, [r1]
-	subs r0, r1
-	subs r0, 0x8
-	strh r0, [r2]
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0805AE58: .4byte gUnknown_3000EA0
-_0805AE5C: .4byte gSpriteCoordOffsetX
-_0805AE60: .4byte gTotalCameraPixelOffsetX
-_0805AE64: .4byte gUnknown_3000E98
-_0805AE68: .4byte gSpriteCoordOffsetY
-_0805AE6C: .4byte gTotalCameraPixelOffsetY
-_0805AE70: .4byte gUnknown_3000E9A
-	thumb_func_end UpdateCameraPanning
-
-	thumb_func_start CameraPanningCB_PanAhead
-CameraPanningCB_PanAhead: @ 805AE74
-	push {lr}
-	ldr r0, _0805AE84 @ =gUnknown_2036E2C
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _0805AE88
-	bl InstallCameraPanAheadCallback
-	b _0805AF10
-	.align 2, 0
-_0805AE84: .4byte gUnknown_2036E2C
-_0805AE88:
-	ldr r0, _0805AEA0 @ =gPlayerAvatar
-	ldrb r0, [r0, 0x3]
-	cmp r0, 0x1
-	bne _0805AEA8
-	ldr r0, _0805AEA4 @ =gUnknown_3000E9C
-	ldrb r1, [r0]
-	movs r2, 0x1
-	eors r1, r2
-	strb r1, [r0]
-	cmp r1, 0
-	beq _0805AF10
-	b _0805AEAE
-	.align 2, 0
-_0805AEA0: .4byte gPlayerAvatar
-_0805AEA4: .4byte gUnknown_3000E9C
-_0805AEA8:
-	ldr r1, _0805AED0 @ =gUnknown_3000E9C
-	movs r0, 0
-	strb r0, [r1]
-_0805AEAE:
-	bl player_get_direction_upper_nybble
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x2
-	bne _0805AED8
-	ldr r2, _0805AED4 @ =gUnknown_3000E9A
-	ldrh r3, [r2]
-	movs r0, 0
-	ldrsh r1, [r2, r0]
-	movs r0, 0x8
-	negs r0, r0
-	cmp r1, r0
-	ble _0805AF10
-	subs r0, r3, 0x2
-	b _0805AF0E
-	.align 2, 0
-_0805AED0: .4byte gUnknown_3000E9C
-_0805AED4: .4byte gUnknown_3000E9A
-_0805AED8:
-	cmp r0, 0x1
-	bne _0805AEF4
-	ldr r1, _0805AEF0 @ =gUnknown_3000E9A
-	ldrh r2, [r1]
-	movs r3, 0
-	ldrsh r0, [r1, r3]
-	cmp r0, 0x47
-	bgt _0805AF10
-	adds r0, r2, 0x2
-	strh r0, [r1]
-	b _0805AF10
-	.align 2, 0
-_0805AEF0: .4byte gUnknown_3000E9A
-_0805AEF4:
-	ldr r2, _0805AF04 @ =gUnknown_3000E9A
-	ldrh r0, [r2]
-	movs r3, 0
-	ldrsh r1, [r2, r3]
-	cmp r1, 0x1F
-	bgt _0805AF08
-	adds r0, 0x2
-	b _0805AF0E
-	.align 2, 0
-_0805AF04: .4byte gUnknown_3000E9A
-_0805AF08:
-	cmp r1, 0x20
-	ble _0805AF10
-	subs r0, 0x2
-_0805AF0E:
-	strh r0, [r2]
-_0805AF10:
-	pop {r0}
-	bx r0
-	thumb_func_end CameraPanningCB_PanAhead
-
 	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/overworld.s b/asm/overworld.s
index 14afde17a..2412a4d87 100644
--- a/asm/overworld.s
+++ b/asm/overworld.s
@@ -3091,7 +3091,7 @@ InitOverworldBgs: @ 80562B0
 	movs r1, 0x5
 	movs r2, 0x1
 	bl SetBgAttribute
-	ldr r0, _08056348 @ =gUnknown_3005018
+	ldr r0, _08056348 @ =gBGTilemapBuffers2
 	mov r8, r0
 	movs r4, 0x80
 	lsls r4, 4
@@ -3099,11 +3099,11 @@ InitOverworldBgs: @ 80562B0
 	bl AllocZeroed
 	mov r1, r8
 	str r0, [r1]
-	ldr r6, _0805634C @ =gUnknown_3005014
+	ldr r6, _0805634C @ =gBGTilemapBuffers1
 	adds r0, r4, 0
 	bl AllocZeroed
 	str r0, [r6]
-	ldr r5, _08056350 @ =gUnknown_300501C
+	ldr r5, _08056350 @ =gBGTilemapBuffers3
 	adds r0, r4, 0
 	bl AllocZeroed
 	str r0, [r5]
@@ -3127,9 +3127,9 @@ InitOverworldBgs: @ 80562B0
 	bx r0
 	.align 2, 0
 _08056344: .4byte gUnknown_826D320
-_08056348: .4byte gUnknown_3005018
-_0805634C: .4byte gUnknown_3005014
-_08056350: .4byte gUnknown_300501C
+_08056348: .4byte gBGTilemapBuffers2
+_0805634C: .4byte gBGTilemapBuffers1
+_08056350: .4byte gBGTilemapBuffers3
 	thumb_func_end InitOverworldBgs
 
 	thumb_func_start sub_8056354
@@ -3155,7 +3155,7 @@ sub_8056354: @ 8056354
 	movs r1, 0x5
 	movs r2, 0x1
 	bl SetBgAttribute
-	ldr r0, _080563E4 @ =gUnknown_3005018
+	ldr r0, _080563E4 @ =gBGTilemapBuffers2
 	mov r8, r0
 	movs r4, 0x80
 	lsls r4, 4
@@ -3163,11 +3163,11 @@ sub_8056354: @ 8056354
 	bl AllocZeroed
 	mov r1, r8
 	str r0, [r1]
-	ldr r6, _080563E8 @ =gUnknown_3005014
+	ldr r6, _080563E8 @ =gBGTilemapBuffers1
 	adds r0, r4, 0
 	bl AllocZeroed
 	str r0, [r6]
-	ldr r5, _080563EC @ =gUnknown_300501C
+	ldr r5, _080563EC @ =gBGTilemapBuffers3
 	adds r0, r4, 0
 	bl AllocZeroed
 	str r0, [r5]
@@ -3191,30 +3191,30 @@ sub_8056354: @ 8056354
 	bx r0
 	.align 2, 0
 _080563E0: .4byte gUnknown_826D320
-_080563E4: .4byte gUnknown_3005018
-_080563E8: .4byte gUnknown_3005014
-_080563EC: .4byte gUnknown_300501C
+_080563E4: .4byte gBGTilemapBuffers2
+_080563E8: .4byte gBGTilemapBuffers1
+_080563EC: .4byte gBGTilemapBuffers3
 	thumb_func_end sub_8056354
 
 	thumb_func_start CleanupOverworldWindowsAndTilemaps
 CleanupOverworldWindowsAndTilemaps: @ 80563F0
 	push {lr}
 	bl FreeAllOverworldWindowBuffers
-	ldr r0, _08056414 @ =gUnknown_300501C
+	ldr r0, _08056414 @ =gBGTilemapBuffers3
 	ldr r0, [r0]
 	bl Free
-	ldr r0, _08056418 @ =gUnknown_3005014
+	ldr r0, _08056418 @ =gBGTilemapBuffers1
 	ldr r0, [r0]
 	bl Free
-	ldr r0, _0805641C @ =gUnknown_3005018
+	ldr r0, _0805641C @ =gBGTilemapBuffers2
 	ldr r0, [r0]
 	bl Free
 	pop {r0}
 	bx r0
 	.align 2, 0
-_08056414: .4byte gUnknown_300501C
-_08056418: .4byte gUnknown_3005014
-_0805641C: .4byte gUnknown_3005018
+_08056414: .4byte gBGTilemapBuffers3
+_08056418: .4byte gBGTilemapBuffers1
+_0805641C: .4byte gBGTilemapBuffers2
 	thumb_func_end CleanupOverworldWindowsAndTilemaps
 
 	thumb_func_start sub_8056420
@@ -5344,7 +5344,7 @@ _08057620:
 	beq _08057648
 	b _0805754E
 _0805762C:
-	ldr r0, _08057640 @ =gUnknown_3005050
+	ldr r0, _08057640 @ =gFieldCamera
 	ldr r1, _08057644 @ =sub_8057748
 	str r1, [r0]
 	bl SetFieldVBlankCallback
@@ -5353,7 +5353,7 @@ _0805762C:
 	movs r0, 0x1
 	b _0805764A
 	.align 2, 0
-_08057640: .4byte gUnknown_3005050
+_08057640: .4byte gFieldCamera
 _08057644: .4byte sub_8057748
 _08057648:
 	movs r0, 0
diff --git a/common_syms/field_camera.txt b/common_syms/field_camera.txt
new file mode 100644
index 000000000..65de29fc3
--- /dev/null
+++ b/common_syms/field_camera.txt
@@ -0,0 +1,3 @@
+gFieldCamera
+gTotalCameraPixelOffsetY
+gTotalCameraPixelOffsetX
\ No newline at end of file
diff --git a/include/event_object_movement.h b/include/event_object_movement.h
index 50d9935fc..5c65db228 100644
--- a/include/event_object_movement.h
+++ b/include/event_object_movement.h
@@ -129,6 +129,8 @@ void UpdateObjectEventSpriteVisibility(struct Sprite *sprite, bool8 invisible);
 u8 ZCoordToPriority(u8 z);
 void SetObjectSubpriorityByZCoord(u8 z, struct Sprite * sprite, u8 offset);
 void MakeObjectTemplateFromObjectEventGraphicsInfo(u16 graphicsId, void (*callback)(struct Sprite *), struct SpriteTemplate *spriteTemplate, const struct SubspriteTable **subspriteTables);
+u8 AddCameraObject(u8 trackedSpriteId);
+void UpdateObjectEventsForCameraUpdate(s16 x, s16 y);
 
 // Exported data declarations
 
diff --git a/include/field_camera.h b/include/field_camera.h
index fdab03255..65003bc6f 100644
--- a/include/field_camera.h
+++ b/include/field_camera.h
@@ -8,9 +8,9 @@
 struct CameraObject
 {
     void (*callback)(struct CameraObject *);
-    u32 unk4;
-    s32 unk8;
-    s32 unkC;
+    u32 spriteId;
+    s32 movementSpeedX;
+    s32 movementSpeedY;
     s32 x;
     s32 y;
 };
diff --git a/include/fieldmap.h b/include/fieldmap.h
index a8e31685f..7cccbcc24 100644
--- a/include/fieldmap.h
+++ b/include/fieldmap.h
@@ -33,5 +33,6 @@ void save_serialize_map(void);
 u32 GetMetatileAttributeFromRawMetatileBehavior(u32 original, u8 bit);
 u32 MapGridGetMetatileAttributeAt(s16 x, s16 y, u8 attr);
 void MapGridSetMetatileImpassabilityAt(s32 x, s32 y, bool32 arg2);
+bool8 CameraMove(s32 x, s32 y);
 
 #endif //GUARD_FIELDMAP_H
diff --git a/include/overworld.h b/include/overworld.h
index 02492f74b..fecacf6de 100644
--- a/include/overworld.h
+++ b/include/overworld.h
@@ -194,6 +194,9 @@ void CB1_Overworld(void);
 void sub_80568C4(void);
 u8 GetLastUsedWarpMapSectionId(void);
 
+extern u16 *gBGTilemapBuffers1;
+extern u16 *gBGTilemapBuffers2;
+extern u16 *gBGTilemapBuffers3;
 extern u16 gHeldKeyCodeToSend;
 
 #endif //GUARD_OVERWORLD_H
diff --git a/ld_script.txt b/ld_script.txt
index ef3c4a997..094bf1c88 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -90,7 +90,7 @@ SECTIONS {
         asm/overworld.o(.text);
         src/fieldmap.o(.text);
         src/metatile_behavior.o(.text);
-        asm/field_camera.o(.text);
+        src/field_camera.o(.text);
         src/field_door.o(.text);
         asm/field_player_avatar.o(.text);
         asm/event_object_movement.o(.text);
diff --git a/src/field_camera.c b/src/field_camera.c
new file mode 100644
index 000000000..0263a481a
--- /dev/null
+++ b/src/field_camera.c
@@ -0,0 +1,572 @@
+#include "global.h"
+#include "gflib.h"
+#include "field_camera.h"
+#include "field_player_avatar.h"
+#include "fieldmap.h"
+#include "event_object_movement.h"
+#include "new_menu_helpers.h"
+#include "overworld.h"
+
+EWRAM_DATA bool8 gUnusedBikeCameraAheadPanback = FALSE;
+
+// Static type declarations
+struct FieldCameraOffset
+{
+    u8 xPixelOffset;
+    u8 yPixelOffset;
+    u8 xTileOffset;
+    u8 yTileOffset;
+    bool8 copyBGToVRAM;
+};
+
+// static functions
+static void RedrawMapSliceNorth(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout);
+static void RedrawMapSliceSouth(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout);
+static void RedrawMapSliceEast(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout);
+static void RedrawMapSliceWest(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout);
+static s32 MapPosToBgTilemapOffset(struct FieldCameraOffset *a, s32 x, s32 y);
+static void DrawWholeMapViewInternal(int x, int y, const struct MapLayout *mapLayout);
+static void DrawMetatileAt(const struct MapLayout *mapLayout, u16, int, int);
+static void DrawMetatile(s32 a, const u16 *b, u16 c);
+static void CameraPanningCB_PanAhead(void);
+
+// IWRAM bss vars
+static struct FieldCameraOffset sFieldCameraOffset;
+static s16 sHorizontalCameraPan;
+static s16 sVerticalCameraPan;
+static u8 gUnknown_3000E9C;
+static void (*sFieldCameraPanningCallback)(void);
+
+struct CameraObject gFieldCamera;
+u16 gTotalCameraPixelOffsetY;
+u16 gTotalCameraPixelOffsetX;
+
+// text
+static void move_tilemap_camera_to_upper_left_corner_(struct FieldCameraOffset *cameraOffset)
+{
+    cameraOffset->xTileOffset = 0;
+    cameraOffset->yTileOffset = 0;
+    cameraOffset->xPixelOffset = 0;
+    cameraOffset->yPixelOffset = 0;
+    cameraOffset->copyBGToVRAM = TRUE;
+}
+
+static void tilemap_move_something(struct FieldCameraOffset *cameraOffset, u32 b, u32 c)
+{
+    cameraOffset->xTileOffset += b;
+    cameraOffset->xTileOffset %= 32;
+    cameraOffset->yTileOffset += c;
+    cameraOffset->yTileOffset %= 32;
+}
+
+static void coords8_add(struct FieldCameraOffset *cameraOffset, u32 b, u32 c)
+{
+    cameraOffset->xPixelOffset += b;
+    cameraOffset->yPixelOffset += c;
+}
+
+void move_tilemap_camera_to_upper_left_corner(void)
+{
+    move_tilemap_camera_to_upper_left_corner_(&sFieldCameraOffset);
+}
+
+void FieldUpdateBgTilemapScroll(void)
+{
+    u32 r4, r5;
+    r5 = sFieldCameraOffset.xPixelOffset + sHorizontalCameraPan;
+    r4 = sVerticalCameraPan + sFieldCameraOffset.yPixelOffset + 8;
+
+    SetGpuReg(REG_OFFSET_BG1HOFS, r5);
+    SetGpuReg(REG_OFFSET_BG1VOFS, r4);
+    SetGpuReg(REG_OFFSET_BG2HOFS, r5);
+    SetGpuReg(REG_OFFSET_BG2VOFS, r4);
+    SetGpuReg(REG_OFFSET_BG3HOFS, r5);
+    SetGpuReg(REG_OFFSET_BG3VOFS, r4);
+}
+
+void sub_805A658(s16 *a, s16 *b)
+{
+    *a = sFieldCameraOffset.xPixelOffset + sHorizontalCameraPan;
+    *b = sFieldCameraOffset.yPixelOffset + sVerticalCameraPan + 8;
+}
+
+void DrawWholeMapView(void)
+{
+    DrawWholeMapViewInternal(gSaveBlock1Ptr->pos.x, gSaveBlock1Ptr->pos.y, gMapHeader.mapLayout);
+//    sFieldCameraOffset.copyBGToVRAM = TRUE;
+}
+
+static void DrawWholeMapViewInternal(int x, int y, const struct MapLayout *mapLayout)
+{
+    u8 i;
+    u8 j;
+    u32 r6;
+    u8 temp;
+
+    for (i = 0; i < 32; i += 2)
+    {
+        temp = sFieldCameraOffset.yTileOffset + i;
+        if (temp >= 32)
+            temp -= 32;
+        r6 = temp * 32;
+        for (j = 0; j < 32; j += 2)
+        {
+            temp = sFieldCameraOffset.xTileOffset + j;
+            if (temp >= 32)
+                temp -= 32;
+            DrawMetatileAt(mapLayout, r6 + temp, x + j / 2, y + i / 2);
+        }
+    }
+}
+
+static void RedrawMapSlicesForCameraUpdate(struct FieldCameraOffset *cameraOffset, int x, int y)
+{
+    const struct MapLayout *mapLayout = gMapHeader.mapLayout;
+
+    if (x > 0)
+        RedrawMapSliceWest(cameraOffset, mapLayout);
+    if (x < 0)
+        RedrawMapSliceEast(cameraOffset, mapLayout);
+    if (y > 0)
+        RedrawMapSliceNorth(cameraOffset, mapLayout);
+    if (y < 0)
+        RedrawMapSliceSouth(cameraOffset, mapLayout);
+    cameraOffset->copyBGToVRAM = TRUE;
+}
+
+static void RedrawMapSliceNorth(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout)
+{
+    u8 i;
+    u8 temp;
+    u32 r7;
+
+    temp = cameraOffset->yTileOffset + 28;
+    if (temp >= 32)
+        temp -= 32;
+    r7 = temp * 32;
+    for (i = 0; i < 32; i += 2)
+    {
+        temp = cameraOffset->xTileOffset + i;
+        if (temp >= 32)
+            temp -= 32;
+        DrawMetatileAt(mapLayout, r7 + temp, gSaveBlock1Ptr->pos.x + i / 2, gSaveBlock1Ptr->pos.y + 14);
+    }
+}
+
+static void RedrawMapSliceSouth(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout)
+{
+    u8 i;
+    u8 temp;
+    u32 r7 = cameraOffset->yTileOffset * 32;
+
+    for (i = 0; i < 32; i += 2)
+    {
+        temp = cameraOffset->xTileOffset + i;
+        if (temp >= 32)
+            temp -= 32;
+        DrawMetatileAt(mapLayout, r7 + temp, gSaveBlock1Ptr->pos.x + i / 2, gSaveBlock1Ptr->pos.y);
+    }
+}
+
+static void RedrawMapSliceEast(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout)
+{
+    u8 i;
+    u8 temp;
+    u32 r6 = cameraOffset->xTileOffset;
+
+    for (i = 0; i < 32; i += 2)
+    {
+        temp = cameraOffset->yTileOffset + i;
+        if (temp >= 32)
+            temp -= 32;
+        DrawMetatileAt(mapLayout, temp * 32 + r6, gSaveBlock1Ptr->pos.x, gSaveBlock1Ptr->pos.y + i / 2);
+    }
+}
+
+static void RedrawMapSliceWest(struct FieldCameraOffset *cameraOffset, const struct MapLayout *mapLayout)
+{
+    u8 i;
+    u8 temp;
+    u8 r5 = cameraOffset->xTileOffset + 28;
+
+    if (r5 >= 32)
+        r5 -= 32;
+    for (i = 0; i < 32; i += 2)
+    {
+        temp = cameraOffset->yTileOffset + i;
+        if (temp >= 32)
+            temp -= 32;
+        DrawMetatileAt(mapLayout, temp * 32 + r5, gSaveBlock1Ptr->pos.x + 14, gSaveBlock1Ptr->pos.y + i / 2);
+    }
+}
+
+void CurrentMapDrawMetatileAt(int x, int y)
+{
+    int offset = MapPosToBgTilemapOffset(&sFieldCameraOffset, x, y);
+
+    if (offset >= 0)
+    {
+        DrawMetatileAt(gMapHeader.mapLayout, offset, x, y);
+//        sFieldCameraOffset.copyBGToVRAM = TRUE;
+    }
+}
+
+void DrawDoorMetatileAt(int x, int y, const u16 *arr)
+{
+    int offset = MapPosToBgTilemapOffset(&sFieldCameraOffset, x, y);
+
+    if (offset >= 0)
+    {
+        DrawMetatile(1, arr, offset);
+//        sFieldCameraOffset.copyBGToVRAM = TRUE;
+    }
+}
+
+static void DrawMetatileAt(const struct MapLayout *mapLayout, u16 offset, int x, int y)
+{
+    u16 metatileId = MapGridGetMetatileIdAt(x, y);
+    u16 *metatiles;
+
+    if (metatileId > NUM_METATILES_TOTAL)
+        metatileId = 0;
+    if (metatileId < NUM_METATILES_IN_PRIMARY)
+        metatiles = mapLayout->primaryTileset->metatiles;
+    else
+    {
+        metatiles = mapLayout->secondaryTileset->metatiles;
+        metatileId -= NUM_METATILES_IN_PRIMARY;
+    }
+    DrawMetatile(MapGridGetMetatileLayerTypeAt(x, y), metatiles + metatileId * 8, offset);
+}
+
+static void DrawMetatile(s32 metatileLayerType, const u16 *metatiles, u16 offset)
+{
+    switch (metatileLayerType)
+    {
+    case 2: // LAYER_TYPE_
+        // Draw metatile's bottom layer to the bottom background layer.
+        gBGTilemapBuffers3[offset] = metatiles[0];
+        gBGTilemapBuffers3[offset + 1] = metatiles[1];
+        gBGTilemapBuffers3[offset + 0x20] = metatiles[2];
+        gBGTilemapBuffers3[offset + 0x21] = metatiles[3];
+
+        // Draw transparent tiles to the middle background layer.
+        gBGTilemapBuffers1[offset] = 0;
+        gBGTilemapBuffers1[offset + 1] = 0;
+        gBGTilemapBuffers1[offset + 0x20] = 0;
+        gBGTilemapBuffers1[offset + 0x21] = 0;
+
+        // Draw metatile's top layer to the top background layer.
+        gBGTilemapBuffers2[offset] = metatiles[4];
+        gBGTilemapBuffers2[offset + 1] = metatiles[5];
+        gBGTilemapBuffers2[offset + 0x20] = metatiles[6];
+        gBGTilemapBuffers2[offset + 0x21] = metatiles[7];
+        break;
+    case 1:  // LAYER_TYPE_COVERED_BY_OBJECTS
+        // Draw metatile's bottom layer to the bottom background layer.
+        gBGTilemapBuffers3[offset] = metatiles[0];
+        gBGTilemapBuffers3[offset + 1] = metatiles[1];
+        gBGTilemapBuffers3[offset + 0x20] = metatiles[2];
+        gBGTilemapBuffers3[offset + 0x21] = metatiles[3];
+
+        // Draw metatile's top layer to the middle background layer.
+        gBGTilemapBuffers1[offset] = metatiles[4];
+        gBGTilemapBuffers1[offset + 1] = metatiles[5];
+        gBGTilemapBuffers1[offset + 0x20] = metatiles[6];
+        gBGTilemapBuffers1[offset + 0x21] = metatiles[7];
+
+        // Draw transparent tiles to the top background layer.
+        gBGTilemapBuffers2[offset] = 0;
+        gBGTilemapBuffers2[offset + 1] = 0;
+        gBGTilemapBuffers2[offset + 0x20] = 0;
+        gBGTilemapBuffers2[offset + 0x21] = 0;
+        break;
+    case 0: // LAYER_TYPE_NORMAL
+        // Draw garbage to the bottom background layer.
+        gBGTilemapBuffers3[offset] = 0x3014;
+        gBGTilemapBuffers3[offset + 1] = 0x3014;
+        gBGTilemapBuffers3[offset + 0x20] = 0x3014;
+        gBGTilemapBuffers3[offset + 0x21] = 0x3014;
+
+        // Draw metatile's bottom layer to the middle background layer.
+        gBGTilemapBuffers1[offset] = metatiles[0];
+        gBGTilemapBuffers1[offset + 1] = metatiles[1];
+        gBGTilemapBuffers1[offset + 0x20] = metatiles[2];
+        gBGTilemapBuffers1[offset + 0x21] = metatiles[3];
+
+        // Draw metatile's top layer to the top background layer, which covers object event sprites.
+        gBGTilemapBuffers2[offset] = metatiles[4];
+        gBGTilemapBuffers2[offset + 1] = metatiles[5];
+        gBGTilemapBuffers2[offset + 0x20] = metatiles[6];
+        gBGTilemapBuffers2[offset + 0x21] = metatiles[7];
+        break;
+    }
+    ScheduleBgCopyTilemapToVram(1);
+    ScheduleBgCopyTilemapToVram(2);
+    ScheduleBgCopyTilemapToVram(3);
+}
+
+static s32 MapPosToBgTilemapOffset(struct FieldCameraOffset *cameraOffset, s32 x, s32 y)
+{
+    x -= gSaveBlock1Ptr->pos.x;
+    x *= 2;
+    if (x >= 32 || x < 0)
+        return -1;
+    x = x + cameraOffset->xTileOffset;
+    if (x >= 32)
+        x -= 32;
+
+    y = (y - gSaveBlock1Ptr->pos.y) * 2;
+    if (y >= 32 || y < 0)
+        return -1;
+    y = y + cameraOffset->yTileOffset;
+    if (y >= 32)
+        y -= 32;
+
+    return y * 32 + x;
+}
+
+static void CameraUpdateCallback(struct CameraObject *fieldCamera)
+{
+    if (fieldCamera->spriteId != 0)
+    {
+        fieldCamera->movementSpeedX = gSprites[fieldCamera->spriteId].data[2];
+        fieldCamera->movementSpeedY = gSprites[fieldCamera->spriteId].data[3];
+    }
+}
+
+void ResetCameraUpdateInfo(void)
+{
+    gFieldCamera.movementSpeedX = 0;
+    gFieldCamera.movementSpeedY = 0;
+    gFieldCamera.x = 0;
+    gFieldCamera.y = 0;
+    gFieldCamera.spriteId = 0;
+    gFieldCamera.callback = NULL;
+}
+
+u32 InitCameraUpdateCallback(u8 trackedSpriteId)
+{
+    if (gFieldCamera.spriteId != 0)
+        DestroySprite(&gSprites[gFieldCamera.spriteId]);
+    gFieldCamera.spriteId = AddCameraObject(trackedSpriteId);
+    gFieldCamera.callback = CameraUpdateCallback;
+    return 0;
+}
+
+void CameraUpdate(void)
+{
+    int deltaX;
+    int deltaY;
+    int curMovementOffsetY;
+    int curMovementOffsetX;
+    int movementSpeedX;
+    int movementSpeedY;
+
+    if (gFieldCamera.callback != NULL)
+        gFieldCamera.callback(&gFieldCamera);
+    movementSpeedX = gFieldCamera.movementSpeedX;
+    movementSpeedY = gFieldCamera.movementSpeedY;
+    deltaX = 0;
+    deltaY = 0;
+    curMovementOffsetX = gFieldCamera.x;
+    curMovementOffsetY = gFieldCamera.y;
+
+
+    if (curMovementOffsetX == 0 && movementSpeedX != 0)
+    {
+        if (movementSpeedX > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+    if (curMovementOffsetY == 0 && movementSpeedY != 0)
+    {
+        if (movementSpeedY > 0)
+            deltaY = 1;
+        else
+            deltaY = -1;
+    }
+    if (curMovementOffsetX != 0 && curMovementOffsetX == -movementSpeedX)
+    {
+        if (movementSpeedX > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+    if (curMovementOffsetY != 0 && curMovementOffsetY == -movementSpeedY)
+    {
+        if (movementSpeedY > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+
+    gFieldCamera.x += movementSpeedX;
+    gFieldCamera.x = gFieldCamera.x - 16 * (gFieldCamera.x / 16);
+    gFieldCamera.y += movementSpeedY;
+    gFieldCamera.y = gFieldCamera.y - 16 * (gFieldCamera.y / 16);
+
+    if (deltaX != 0 || deltaY != 0)
+    {
+        CameraMove(deltaX, deltaY);
+        UpdateObjectEventsForCameraUpdate(deltaX, deltaY);
+//        RotatingGatePuzzleCameraUpdate(deltaX, deltaY);
+//        ResetBerryTreeSparkleFlags();
+        tilemap_move_something(&sFieldCameraOffset, deltaX * 2, deltaY * 2);
+        RedrawMapSlicesForCameraUpdate(&sFieldCameraOffset, deltaX * 2, deltaY * 2);
+    }
+
+    coords8_add(&sFieldCameraOffset, movementSpeedX, movementSpeedY);
+    gTotalCameraPixelOffsetX -= movementSpeedX;
+    gTotalCameraPixelOffsetY -= movementSpeedY;
+}
+
+void MoveCameraAndRedrawMap(int deltaX, int deltaY) //unused
+{
+    CameraMove(deltaX, deltaY);
+    UpdateObjectEventsForCameraUpdate(deltaX, deltaY);
+    DrawWholeMapView();
+    gTotalCameraPixelOffsetX -= deltaX * 16;
+    gTotalCameraPixelOffsetY -= deltaY * 16;
+}
+
+void sub_805ACF0(void)
+{
+    int deltaX;
+    int deltaY;
+    int curMovementOffsetY;
+    int curMovementOffsetX;
+    int movementSpeedX;
+    int movementSpeedY;
+
+    if (gFieldCamera.callback != NULL)
+        gFieldCamera.callback(&gFieldCamera);
+    movementSpeedX = gFieldCamera.movementSpeedX;
+    movementSpeedY = gFieldCamera.movementSpeedY;
+    deltaX = 0;
+    deltaY = 0;
+    curMovementOffsetX = gFieldCamera.x;
+    curMovementOffsetY = gFieldCamera.y;
+
+
+    if (curMovementOffsetX == 0 && movementSpeedX != 0)
+    {
+        if (movementSpeedX > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+    if (curMovementOffsetY == 0 && movementSpeedY != 0)
+    {
+        if (movementSpeedY > 0)
+            deltaY = 1;
+        else
+            deltaY = -1;
+    }
+    if (curMovementOffsetX != 0 && curMovementOffsetX == -movementSpeedX)
+    {
+        if (movementSpeedX > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+    if (curMovementOffsetY != 0 && curMovementOffsetY == -movementSpeedY)
+    {
+        if (movementSpeedY > 0)
+            deltaX = 1;
+        else
+            deltaX = -1;
+    }
+
+    gFieldCamera.x += movementSpeedX;
+    gFieldCamera.x = gFieldCamera.x - 16 * (gFieldCamera.x / 16);
+    gFieldCamera.y += movementSpeedY;
+    gFieldCamera.y = gFieldCamera.y - 16 * (gFieldCamera.y / 16);
+
+    if (deltaX != 0 || deltaY != 0)
+    {
+        CameraMove(deltaX, deltaY);
+//        UpdateObjectEventsForCameraUpdate(deltaX, deltaY);
+//        RotatingGatePuzzleCameraUpdate(deltaX, deltaY);
+//        ResetBerryTreeSparkleFlags();
+        tilemap_move_something(&sFieldCameraOffset, deltaX * 2, deltaY * 2);
+        RedrawMapSlicesForCameraUpdate(&sFieldCameraOffset, deltaX * 2, deltaY * 2);
+    }
+
+    coords8_add(&sFieldCameraOffset, movementSpeedX, movementSpeedY);
+//    gTotalCameraPixelOffsetX -= movementSpeedX;
+//    gTotalCameraPixelOffsetY -= movementSpeedY;
+}
+
+void SetCameraPanningCallback(void (*a)(void))
+{
+    sFieldCameraPanningCallback = a;
+}
+
+void SetCameraPanning(s16 a, s16 b)
+{
+    sHorizontalCameraPan = a;
+    sVerticalCameraPan = b + 32;
+}
+
+void InstallCameraPanAheadCallback(void)
+{
+    sFieldCameraPanningCallback = CameraPanningCB_PanAhead;
+    gUnknown_3000E9C = 0;
+    sHorizontalCameraPan = 0;
+    sVerticalCameraPan = 32;
+}
+
+void UpdateCameraPanning(void)
+{
+    if (sFieldCameraPanningCallback != NULL)
+        sFieldCameraPanningCallback();
+    //Update sprite offset of overworld objects
+    gSpriteCoordOffsetX = gTotalCameraPixelOffsetX - sHorizontalCameraPan;
+    gSpriteCoordOffsetY = gTotalCameraPixelOffsetY - sVerticalCameraPan - 8;
+}
+
+static void CameraPanningCB_PanAhead(void)
+{
+    u8 var;
+
+    if (gUnusedBikeCameraAheadPanback == FALSE)
+    {
+        InstallCameraPanAheadCallback();
+    }
+    else
+    {
+        // this code is never reached.
+        if (gPlayerAvatar.tileTransitionState == 1)
+        {
+            gUnknown_3000E9C ^= 1;
+            if (gUnknown_3000E9C == 0)
+                return;
+        }
+        else
+        {
+            gUnknown_3000E9C = 0;
+        }
+
+        var = player_get_direction_upper_nybble();
+        if (var == 2)
+        {
+            if (sVerticalCameraPan > -8)
+                sVerticalCameraPan -= 2;
+        }
+        else if (var == 1)
+        {
+            if (sVerticalCameraPan < 72)
+                sVerticalCameraPan += 2;
+        }
+        else if (sVerticalCameraPan < 32)
+        {
+            sVerticalCameraPan += 2;
+        }
+        else if (sVerticalCameraPan > 32)
+        {
+            sVerticalCameraPan -= 2;
+        }
+    }
+}
diff --git a/sym_bss.txt b/sym_bss.txt
index 3b3148efc..0ada68f3e 100644
--- a/sym_bss.txt
+++ b/sym_bss.txt
@@ -37,22 +37,10 @@ gUnknown_3000E88: @ 3000E88
 gUnknown_3000E89: @ 3000E89
 	.space 0x7
 
-gUnknown_3000E90: @ 3000E90
-	.space 0x8
-
-gUnknown_3000E98: @ 3000E98
-	.space 0x2
-
-gUnknown_3000E9A: @ 3000E9A
-	.space 0x2
-
-gUnknown_3000E9C: @ 3000E9C
-	.space 0x4
-
-gUnknown_3000EA0: @ 3000EA0
-	.space 0x8
+	.align 3
+	.include "src/field_camera.o"
 
-	.align 2
+	.align 3
 	.include "src/script.o"
 	.align 2
 	.include "src/start_menu.o"
diff --git a/sym_common.txt b/sym_common.txt
index 37fa1cf7c..2ec8e6188 100644
--- a/sym_common.txt
+++ b/sym_common.txt
@@ -20,13 +20,13 @@
 	.include "load_save.o"
 
 	.align 2
-gUnknown_3005014: @ 3005014
+gBGTilemapBuffers1: @ 3005014
 	.space 0x4
 
-gUnknown_3005018: @ 3005018
+gBGTilemapBuffers2: @ 3005018
 	.space 0x4
 
-gUnknown_300501C: @ 300501C
+gBGTilemapBuffers3: @ 300501C
 	.space 0x4
 
 gFieldCallback: @ 3005020
@@ -48,14 +48,7 @@ gFieldLinkPlayerCount: @ 3005030
 	.include "fieldmap.o"
 
 	.align 4
-gUnknown_3005050: @ 3005050
-	.space 0x18
-
-gTotalCameraPixelOffsetY: @ 3005068
-	.space 0x4
-
-gTotalCameraPixelOffsetX: @ 300506C
-	.space 0x4
+	.include "field_camera.o"
 
 	.align 2
 	.include "scrcmd.o"
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 9de1255c2..893c9786e 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -76,11 +76,8 @@ gUnknown_2031DEC: @ 2031DEC
 
 	.align 2
 	.include "src/fieldmap.o"
-
 	.align 2
-	@ .include "src/field_camera.o"
-gUnknown_2036E2C: @ 2036E2C
-	.space 0x4
+	.include "src/field_camera.o"
 
 	.align 2
 	@ .include "src/field_player_avatar.o"