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diff --git a/engine/battle/battle_transitions.asm b/engine/battle/battle_transitions.asm
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+BattleTransition: ; 7096d (1c:496d)
+ ld a, $1
+ ld [H_AUTOBGTRANSFERENABLED], a
+ call Delay3
+ xor a
+ ld [hWY], a
+ dec a
+ ld [wUpdateSpritesEnabled], a
+ call DelayFrame
+ ld hl, wSpriteStateData1 + 2
+ ld a, [H_DOWNARROWBLINKCNT2]
+ ld c, a
+ ld b, $0
+ ld de, $10
+.loop1
+ ld a, [hl]
+ cp $ff
+ jr z, .skip1
+ inc b
+.skip1
+ add hl, de
+ dec c
+ jr nz, .loop1
+ ld hl, wOAMBuffer + $10
+ ld c, $9
+.loop2
+ ld a, b
+ swap a
+ cp l
+ jr z, .skip2
+ push hl
+ push bc
+ ld bc, $10
+ xor a
+ call FillMemory
+ pop bc
+ pop hl
+.skip2
+ ld de, $10
+ add hl, de
+ dec c
+ jr nz, .loop2
+ call Delay3
+ call LoadBattleTransitionTile
+ ld bc, $0
+ ld a, [wLinkState]
+ cp LINK_STATE_BATTLING
+ jr z, .linkBattle
+ call GetBattleTransitionID_WildOrTrainer
+ call GetBattleTransitionID_CompareLevels
+ call GetBattleTransitionID_IsDungeonMap
+.linkBattle
+ ld hl, BattleTransitions
+ add hl, bc
+ add hl, bc
+ ld a, [hli]
+ ld h, [hl]
+ ld l, a
+ jp [hl]
+
+; the three GetBattleTransitionID functions set the first
+; three bits of c, which determines what transition animation
+; to play at the beginning of a battle
+; bit 0: set if trainer battle
+; bit 1: set if enemy is at least 3 levels higher than player
+; bit 2: set if dungeon map
+BattleTransitions: ; 709d2 (1c:49d2)
+ dw BattleTransition_DoubleCircle ; %000
+ dw BattleTransition_Spiral ; %001
+ dw BattleTransition_Circle ; %010
+ dw BattleTransition_Spiral ; %011
+ dw BattleTransition_HorizontalStripes ; %100
+ dw BattleTransition_Shrink ; %101
+ dw BattleTransition_VerticalStripes ; %110
+ dw BattleTransition_Split ; %111
+
+GetBattleTransitionID_WildOrTrainer: ; 709e2 (1c:49e2)
+ ld a, [W_CUROPPONENT]
+ cp $c8
+ jr nc, .trainer
+ res 0, c
+ ret
+.trainer
+ set 0, c
+ ret
+
+GetBattleTransitionID_CompareLevels: ; 709ef (1c:49ef)
+ ld hl, wPartyMon1HP
+.faintedLoop
+ ld a, [hli]
+ or [hl]
+ jr nz, .notFainted
+ ld de, wPartyMon2 - (wPartyMon1 + 1)
+ add hl, de
+ jr .faintedLoop
+.notFainted
+ ld de, wPartyMon1Level - (wPartyMon1HP + 1)
+ add hl, de
+ ld a, [hl]
+ add $3
+ ld e, a
+ ld a, [W_CURENEMYLVL]
+ sub e
+ jr nc, .highLevelEnemy
+ res 1, c
+ ld a, $1
+ ld [wcd47], a
+ ret
+.highLevelEnemy
+ set 1, c
+ xor a
+ ld [wcd47], a
+ ret
+
+; fails to recognize VICTORY_ROAD_2, VICTORY_ROAD_3, all ROCKET_HIDEOUT maps,
+; MANSION_1, SEAFOAM_ISLANDS_[2-5], POWER_PLANT, DIGLETTS_CAVE
+; and SILPH_CO_[9-11]F as dungeon maps
+GetBattleTransitionID_IsDungeonMap: ; 70a19 (1c:4a19)
+ ld a, [W_CURMAP]
+ ld e, a
+ ld hl, DungeonMaps1
+.loop1
+ ld a, [hli]
+ cp $ff
+ jr z, .noMatch1
+ cp e
+ jr nz, .loop1
+.match
+ set 2, c
+ ret
+.noMatch1
+ ld hl, DungeonMaps2
+.loop2
+ ld a, [hli]
+ cp $ff
+ jr z, .noMatch2
+ ld d, a
+ ld a, [hli]
+ cp e
+ jr c, .loop2
+ ld a, e
+ cp d
+ jr nc, .match
+.noMatch2
+ res 2, c
+ ret
+
+; GetBattleTransitionID_IsDungeonMap checks if W_CURMAP
+; is equal to one of these maps
+DungeonMaps1: ; 70a3f (1c:4a3f)
+ db VIRIDIAN_FOREST
+ db ROCK_TUNNEL_1
+ db SEAFOAM_ISLANDS_1
+ db ROCK_TUNNEL_2
+ db $FF
+
+; GetBattleTransitionID_IsDungeonMap checks if W_CURMAP
+; is in between or equal to each pair of maps
+DungeonMaps2: ; 70a44 (1c:4a44)
+ ; all MT_MOON maps
+ db MT_MOON_1
+ db MT_MOON_3
+
+ ; all SS_ANNE maps, VICTORY_ROAD_1, LANCES_ROOM, and HALL_OF_FAME
+ db SS_ANNE_1
+ db HALL_OF_FAME
+
+ ; all POKEMONTOWER maps and Lavender Town buildings
+ db LAVENDER_POKECENTER
+ db LAVENDER_HOUSE_2
+
+ ; SILPH_CO_[2-8]F, MANSION[2-4], SAFARI_ZONE, and UNKNOWN_DUNGEON maps,
+ ; except for SILPH_CO_1F
+ db SILPH_CO_2F
+ db UNKNOWN_DUNGEON_1
+ db $FF
+
+LoadBattleTransitionTile: ; 70a4d (1c:4a4d)
+ ld hl, vChars1 + $7f0
+ ld de, BattleTransitionTile
+ ld bc, (BANK(BattleTransitionTile) << 8) + $01
+ jp CopyVideoData
+
+BattleTransitionTile: ; 70a59 (1c:4a59)
+ INCBIN "gfx/battle_transition.2bpp"
+
+BattleTransition_BlackScreen: ; 70a69 (1c:4a69)
+ ld a, $ff
+ ld [rBGP], a
+ ld [rOBP0], a
+ ld [rOBP1], a
+ ret
+
+; for non-dungeon trainer battles
+; called regardless of mon levels, but does an
+; outward spiral if enemy is at least 3 levels
+; higher than player and does an inward spiral otherwise
+BattleTransition_Spiral: ; 70a72 (1c:4a72)
+ ld a, [wcd47]
+ and a
+ jr z, .outwardSpiral
+ call BattleTransition_InwardSpiral
+ jr .done
+.outwardSpiral
+ hlCoord 10, 10
+ ld a, $3
+ ld [wd09f], a
+ ld a, l
+ ld [wd09b], a
+ ld a, h
+ ld [wd09a], a
+ ld b, $78
+.loop1
+ ld c, $3
+.loop2
+ push bc
+ call BattleTransition_OutwardSpiral_
+ pop bc
+ dec c
+ jr nz, .loop2
+ call DelayFrame
+ dec b
+ jr nz, .loop1
+.done
+ call BattleTransition_BlackScreen
+ xor a
+ ld [wd09b], a
+ ld [wd09a], a
+ ret
+
+BattleTransition_InwardSpiral: ; 70aaa (1c:4aaa)
+ ld a, $7
+ ld [wWhichTrade], a
+ ld hl, wTileMap
+ ld c, $11
+ ld de, $14
+ call BattleTransition_InwardSpiral_
+ inc c
+ jr .skip
+.loop
+ ld de, $14
+ call BattleTransition_InwardSpiral_
+.skip
+ inc c
+ ld de, $1
+ call BattleTransition_InwardSpiral_
+ dec c
+ dec c
+ ld de, $ffec
+ call BattleTransition_InwardSpiral_
+ inc c
+ ld de, rIE
+ call BattleTransition_InwardSpiral_
+ dec c
+ dec c
+ ld a, c
+ and a
+ jr nz, .loop
+ ret
+
+BattleTransition_InwardSpiral_: ; 70ae0 (1c:4ae0)
+ push bc
+.loop
+ ld [hl], $ff
+ add hl, de
+ push bc
+ ld a, [wWhichTrade]
+ dec a
+ jr nz, .skip
+ call BattleTransition_TransferDelay3
+ ld a, $7
+.skip
+ ld [wWhichTrade], a
+ pop bc
+ dec c
+ jr nz, .loop
+ pop bc
+ ret
+
+BattleTransition_OutwardSpiral_: ; 70af9 (1c:4af9)
+ ld bc, $ffec
+ ld de, $14
+ ld a, [wd09b]
+ ld l, a
+ ld a, [wd09a]
+ ld h, a
+ ld a, [wd09f]
+ cp $0
+ jr z, .zero
+ cp $1
+ jr z, .one
+ cp $2
+ jr z, .two
+ cp $3
+ jr z, .three
+.done1
+ ld [hl], $ff
+.done2_
+ ld a, l
+ ld [wd09b], a
+ ld a, h
+ ld [wd09a], a
+ ret
+.zero
+ dec hl
+ ld a, [hl]
+ cp $ff
+ jr nz, .done2
+ inc hl
+ add hl, bc
+ jr .done1
+.one
+ add hl, de
+ ld a, [hl]
+ cp $ff
+ jr nz, .done2
+ add hl, bc
+ dec hl
+ jr .done1
+.two
+ inc hl
+ ld a, [hl]
+ cp $ff
+ jr nz, .done2
+ dec hl
+ add hl, de
+ jr .done1
+.three
+ add hl, bc
+ ld a, [hl]
+ cp $ff
+ jr nz, .done2
+ add hl, de
+ inc hl
+ jr .done1
+.done2
+ ld [hl], $ff
+ ld a, [wd09f]
+ inc a
+ cp $4
+ jr nz, .skip
+ xor a
+.skip
+ ld [wd09f], a
+ jr .done2_
+
+FlashScreen:
+BattleTransition_FlashScreen_: ; 70b5d (1c:4b5d)
+ ld hl, BattleTransition_FlashScreenPalettes
+.loop
+ ld a, [hli]
+ cp $1
+ jr z, .done
+ ld [rBGP], a
+ ld c, $2
+ call DelayFrames
+ jr .loop
+.done
+ dec b
+ jr nz, BattleTransition_FlashScreen_
+ ret
+
+BattleTransition_FlashScreenPalettes: ; 70b72 (1c:4b72)
+ db $F9,$FE,$FF,$FE,$F9,$E4,$90,$40,$00,$40,$90,$E4
+ db $01 ; terminator
+
+; used for low level trainer dungeon battles
+BattleTransition_Shrink: ; 70b7f (1c:4b7f)
+ ld c, $9
+.loop
+ push bc
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+ hlCoord 0, 7
+ deCoord 0, 8
+ ld bc, $ffd8
+ call BattleTransition_CopyTiles1
+ hlCoord 0, 10
+ deCoord 0, 9
+ ld bc, $28
+ call BattleTransition_CopyTiles1
+ hlCoord 8, 0
+ deCoord 9, 0
+ ld bc, $fffe
+ call BattleTransition_CopyTiles2
+ hlCoord 11, 0
+ deCoord 10, 0
+ ld bc, $2
+ call BattleTransition_CopyTiles2
+ ld a, $1
+ ld [H_AUTOBGTRANSFERENABLED], a
+ ld c, $6
+ call DelayFrames
+ pop bc
+ dec c
+ jr nz, .loop
+ call BattleTransition_BlackScreen
+ ld c, $a
+ jp DelayFrames
+
+; used for high level trainer dungeon battles
+BattleTransition_Split: ; 70bca (1c:4bca)
+ ld c, $9
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+.loop
+ push bc
+ hlCoord 0, 16
+ deCoord 0, 17
+ ld bc, $ffd8
+ call BattleTransition_CopyTiles1
+ hlCoord 0, 1
+ ld de, wTileMap
+ ld bc, $28
+ call BattleTransition_CopyTiles1
+ hlCoord 18, 0
+ deCoord 19, 0
+ ld bc, $fffe
+ call BattleTransition_CopyTiles2
+ hlCoord 1, 0
+ ld de, wTileMap
+ ld bc, $2
+ call BattleTransition_CopyTiles2
+ call BattleTransition_TransferDelay3
+ call Delay3
+ pop bc
+ dec c
+ jr nz, .loop
+ call BattleTransition_BlackScreen
+ ld c, $a
+ jp DelayFrames
+
+BattleTransition_CopyTiles1: ; 70c12 (1c:4c12)
+ ld a, c
+ ld [wWhichTrade], a
+ ld a, b
+ ld [wTrainerEngageDistance], a
+ ld c, $8
+.loop1
+ push bc
+ push hl
+ push de
+ ld bc, $14
+ call CopyData
+ pop hl
+ pop de
+ ld a, [wWhichTrade]
+ ld c, a
+ ld a, [wTrainerEngageDistance]
+ ld b, a
+ add hl, bc
+ pop bc
+ dec c
+ jr nz, .loop1
+ ld l, e
+ ld h, d
+ ld a, $ff
+ ld c, $14
+.loop2
+ ld [hli], a
+ dec c
+ jr nz, .loop2
+ ret
+
+BattleTransition_CopyTiles2: ; 70c3f (1c:4c3f)
+ ld a, c
+ ld [wWhichTrade], a
+ ld a, b
+ ld [wTrainerEngageDistance], a
+ ld c, $9
+.loop1
+ push bc
+ push hl
+ push de
+ ld c, $12
+.loop2
+ ld a, [hl]
+ ld [de], a
+ ld a, e
+ add $14
+ jr nc, .noCarry1
+ inc d
+.noCarry1
+ ld e, a
+ ld a, l
+ add $14
+ jr nc, .noCarry2
+ inc h
+.noCarry2
+ ld l, a
+ dec c
+ jr nz, .loop2
+ pop hl
+ pop de
+ ld a, [wWhichTrade]
+ ld c, a
+ ld a, [wTrainerEngageDistance]
+ ld b, a
+ add hl, bc
+ pop bc
+ dec c
+ jr nz, .loop1
+ ld l, e
+ ld h, d
+ ld de, $14
+ ld c, $12
+.loop3
+ ld [hl], $ff
+ add hl, de
+ dec c
+ jr nz, .loop3
+ ret
+
+; used for high level wild dungeon battles
+BattleTransition_VerticalStripes: ; 70c7e (1c:4c7e)
+ ld c, $12
+ ld hl, wTileMap
+ deCoord 1, 17
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+.loop
+ push bc
+ push hl
+ push de
+ push de
+ call BattleTransition_VerticalStripes_
+ pop hl
+ call BattleTransition_VerticalStripes_
+ call BattleTransition_TransferDelay3
+ pop hl
+ ld bc, $ffec
+ add hl, bc
+ ld e, l
+ ld d, h
+ pop hl
+ ld bc, $14
+ add hl, bc
+ pop bc
+ dec c
+ jr nz, .loop
+ jp BattleTransition_BlackScreen
+
+BattleTransition_VerticalStripes_: ; 70caa (1c:4caa)
+ ld c, $a
+.loop
+ ld [hl], $ff
+ inc hl
+ inc hl
+ dec c
+ jr nz, .loop
+ ret
+
+; used for low level wild dungeon battles
+BattleTransition_HorizontalStripes: ; 70cb4 (1c:4cb4)
+ ld c, $14
+ ld hl, wTileMap
+ deCoord 19, 1
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+.loop
+ push bc
+ push hl
+ push de
+ push de
+ call BattleTransition_HorizontalStripes_
+ pop hl
+ call BattleTransition_HorizontalStripes_
+ call BattleTransition_TransferDelay3
+ pop de
+ pop hl
+ pop bc
+ inc hl
+ dec de
+ dec c
+ jr nz, .loop
+ jp BattleTransition_BlackScreen
+
+BattleTransition_HorizontalStripes_: ; 70cd8 (1c:4cd8)
+ ld c, $9
+ ld de, $28
+.loop
+ ld [hl], $ff
+ add hl, de
+ dec c
+ jr nz, .loop
+ ret
+
+; used for high level wild non-dungeon battles
+; makes one full circle around the screen
+; by animating each half circle one at a time
+BattleTransition_Circle: ; 70ce4 (1c:4ce4)
+ call BattleTransition_FlashScreen
+ ld bc, $000a
+ ld hl, BattleTransition_HalfCircle1
+ call BattleTransition_Circle_Sub1
+ ld c, $a
+ ld b, $1
+ ld hl, BattleTransition_HalfCircle2
+ call BattleTransition_Circle_Sub1
+ jp BattleTransition_BlackScreen
+
+BattleTransition_FlashScreen: ; 70cfd (1c:4cfd)
+ ld b, $3
+ call BattleTransition_FlashScreen_
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+ ret
+
+BattleTransition_Circle_Sub1: ; 70d06 (1c:4d06)
+ push bc
+ push hl
+ ld a, b
+ call BattleTransition_Circle_Sub2
+ pop hl
+ ld bc, $0005
+ add hl, bc
+ call BattleTransition_TransferDelay3
+ pop bc
+ dec c
+ jr nz, BattleTransition_Circle_Sub1
+ ret
+
+BattleTransition_TransferDelay3: ; 70d19 (1c:4d19)
+ ld a, $1
+ ld [H_AUTOBGTRANSFERENABLED], a
+ call Delay3
+ xor a
+ ld [H_AUTOBGTRANSFERENABLED], a
+ ret
+
+; used for low level wild non-dungeon battles
+; makes two half circles around the screen
+; by animating both half circles at the same time
+BattleTransition_DoubleCircle: ; 70d24 (1c:4d24)
+ call BattleTransition_FlashScreen
+ ld c, $a
+ ld hl, BattleTransition_HalfCircle1
+ ld de, BattleTransition_HalfCircle2
+.loop
+ push bc
+ push hl
+ push de
+ push de
+ xor a
+ call BattleTransition_Circle_Sub2
+ pop hl
+ ld a, $1
+ call BattleTransition_Circle_Sub2
+ pop hl
+ ld bc, $5
+ add hl, bc
+ ld e, l
+ ld d, h
+ pop hl
+ add hl, bc
+ call BattleTransition_TransferDelay3
+ pop bc
+ dec c
+ jr nz, .loop
+ jp BattleTransition_BlackScreen
+
+BattleTransition_Circle_Sub2: ; 70d50 (1c:4d50)
+ ld [wWhichTrade], a
+ ld a, [hli]
+ ld [wTrainerEngageDistance], a
+ ld a, [hli]
+ ld e, a
+ ld a, [hli]
+ ld d, a
+ ld a, [hli]
+ ld h, [hl]
+ ld l, a
+ jp BattleTransition_Circle_Sub3
+
+BattleTransition_HalfCircle1: ; 70d61 (1c:4d61)
+ db $01
+ dw BattleTransition_CircleData1
+ dwCoord 18, 6
+
+ db $01
+ dw BattleTransition_CircleData2
+ dwCoord 19, 3
+
+ db $01
+ dw BattleTransition_CircleData3
+ dwCoord 18, 0
+
+ db $01
+ dw BattleTransition_CircleData4
+ dwCoord 14, 0
+
+ db $01
+ dw BattleTransition_CircleData5
+ dwCoord 10, 0
+
+ db $00
+ dw BattleTransition_CircleData5
+ dwCoord 9, 0
+
+ db $00
+ dw BattleTransition_CircleData4
+ dwCoord 5, 0
+
+ db $00
+ dw BattleTransition_CircleData3
+ dwCoord 1, 0
+
+ db $00
+ dw BattleTransition_CircleData2
+ dwCoord 0, 3
+
+ db $00
+ dw BattleTransition_CircleData1
+ dwCoord 1, 6
+
+BattleTransition_HalfCircle2: ; 70d93 (1c:4d93)
+ db $00
+ dw BattleTransition_CircleData1
+ dwCoord 1, 11
+
+ db $00
+ dw BattleTransition_CircleData2
+ dwCoord 0, 14
+
+ db $00
+ dw BattleTransition_CircleData3
+ dwCoord 1, 17
+
+ db $00
+ dw BattleTransition_CircleData4
+ dwCoord 5, 17
+
+ db $00
+ dw BattleTransition_CircleData5
+ dwCoord 9, 17
+
+ db $01
+ dw BattleTransition_CircleData5
+ dwCoord 10, 17
+
+ db $01
+ dw BattleTransition_CircleData4
+ dwCoord 14, 17
+
+ db $01
+ dw BattleTransition_CircleData3
+ dwCoord 18, 17
+
+ db $01
+ dw BattleTransition_CircleData2
+ dwCoord 19, 14
+
+ db $01
+ dw BattleTransition_CircleData1
+ dwCoord 18, 11
+
+BattleTransition_Circle_Sub3: ; 70dc5 (1c:4dc5)
+ push hl
+ ld a, [de]
+ ld c, a
+ inc de
+.loop1
+ ld [hl], $ff
+ ld a, [wTrainerEngageDistance]
+ and a
+ jr z, .skip1
+ inc hl
+ jr .skip2
+.skip1
+ dec hl
+.skip2
+ dec c
+ jr nz, .loop1
+ pop hl
+ ld a, [wWhichTrade]
+ and a
+ ld bc, $14
+ jr z, .skip3
+ ld bc, $ffec
+.skip3
+ add hl, bc
+ ld a, [de]
+ inc de
+ cp $ff
+ ret z
+ and a
+ jr z, BattleTransition_Circle_Sub3
+ ld c, a
+.loop2
+ ld a, [wTrainerEngageDistance]
+ and a
+ jr z, .skip4
+ dec hl
+ jr .skip5
+.skip4
+ inc hl
+.skip5
+ dec c
+ jr nz, .loop2
+ jr BattleTransition_Circle_Sub3
+
+BattleTransition_CircleData1: ; 70dfe (1c:4dfe)
+ db $02,$03,$05,$04,$09,$FF
+
+BattleTransition_CircleData2: ; 70e04 (1c:4e04)
+ db $01,$01,$02,$02,$04,$02,$04,$02,$03,$FF
+
+BattleTransition_CircleData3: ; 70e0e (1c:4e0e)
+ db $02,$01,$03,$01,$04,$01,$04,$01,$04,$01,$03,$01,$02,$01,$01,$01,$01,$FF
+
+BattleTransition_CircleData4: ; 70e20 (1c:4e20)
+ db $04,$01,$04,$00,$03,$01,$03,$00,$02,$01,$02,$00,$01,$FF
+
+BattleTransition_CircleData5: ; 70e2e (1c:4e2e)
+ db $04,$00,$03,$00,$03,$00,$02,$00,$02,$00,$01,$00,$01,$00,$01,$FF
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