Merge branch 'PikalaxALT-battle_bg_effects'

7 files changed, 3284 insertions, 7 deletions

diff --git a/constants.asm b/constants.asm
index d758d4b..6a93ce6 100644
--- a/constants.asm
+++ b/constants.asm
@@ -23,3 +23,5 @@ INCLUDE "constants/music_constants.asm"
 INCLUDE "constants/serial_constants.asm"
 
 INCLUDE "constants/misc_constants.asm"
+
+INCLUDE "constants/battle_anim_constants.asm"
diff --git a/constants/battle_anim_constants.asm b/constants/battle_anim_constants.asm
new file mode 100644
index 0000000..0fbd83a
--- /dev/null
+++ b/constants/battle_anim_constants.asm
@@ -0,0 +1,837 @@
+; battle_anim_struct members (see macros/wram.asm)
+	const_def
+	const BATTLEANIMSTRUCT_INDEX
+	const BATTLEANIMSTRUCT_01
+	const BATTLEANIMSTRUCT_02
+	const BATTLEANIMSTRUCT_FRAMESET_ID
+	const BATTLEANIMSTRUCT_FUNCTION
+	const BATTLEANIMSTRUCT_PALETTE
+	const BATTLEANIMSTRUCT_TILEID
+	const BATTLEANIMSTRUCT_XCOORD
+	const BATTLEANIMSTRUCT_YCOORD
+	const BATTLEANIMSTRUCT_XOFFSET
+	const BATTLEANIMSTRUCT_YOFFSET
+	const BATTLEANIMSTRUCT_0B
+	const BATTLEANIMSTRUCT_DURATION
+	const BATTLEANIMSTRUCT_FRAME
+	const BATTLEANIMSTRUCT_ANON_JT_INDEX
+	const BATTLEANIMSTRUCT_0F
+	const BATTLEANIMSTRUCT_10
+	const BATTLEANIMSTRUCT_11
+	const BATTLEANIMSTRUCT_12
+	const BATTLEANIMSTRUCT_13
+	const BATTLEANIMSTRUCT_14
+	const BATTLEANIMSTRUCT_15
+	const BATTLEANIMSTRUCT_16
+	const BATTLEANIMSTRUCT_17
+BATTLEANIMSTRUCT_LENGTH EQU const_value
+
+; BattleAnimObjects indexes (see data/battle_anims/objects.asm)
+	const_def
+	const ANIM_OBJ_00
+	const ANIM_OBJ_01
+	const ANIM_OBJ_02
+	const ANIM_OBJ_03
+	const ANIM_OBJ_04
+	const ANIM_OBJ_05
+	const ANIM_OBJ_06
+	const ANIM_OBJ_07
+	const ANIM_OBJ_08
+	const ANIM_OBJ_FANG
+	const ANIM_OBJ_0A
+	const ANIM_OBJ_EMBER
+	const ANIM_OBJ_DRAGON_RAGE
+	const ANIM_OBJ_FLAMETHROWER
+	const ANIM_OBJ_FIRE_SPIN
+	const ANIM_OBJ_FIRE_BLAST
+	const ANIM_OBJ_BURNED
+	const ANIM_OBJ_BLIZZARD
+	const ANIM_OBJ_12
+	const ANIM_OBJ_ICE_BEAM
+	const ANIM_OBJ_RAZOR_LEAF
+	const ANIM_OBJ_POKE_BALL
+	const ANIM_OBJ_POKE_BALL_BLOCKED
+	const ANIM_OBJ_17
+	const ANIM_OBJ_18
+	const ANIM_OBJ_19
+	const ANIM_OBJ_1A
+	const ANIM_OBJ_1B
+	const ANIM_OBJ_BALL_POOF
+	const ANIM_OBJ_BIG_ROCK
+	const ANIM_OBJ_SMALL_ROCK
+	const ANIM_OBJ_STRENGTH
+	const ANIM_OBJ_SEISMIC_TOSS
+	const ANIM_OBJ_BUBBLE
+	const ANIM_OBJ_SURF
+	const ANIM_OBJ_SING
+	const ANIM_OBJ_WATER_GUN
+	const ANIM_OBJ_HYDRO_PUMP
+	const ANIM_OBJ_POWDER
+	const ANIM_OBJ_27
+	const ANIM_OBJ_28
+	const ANIM_OBJ_ICE_BUILDUP
+	const ANIM_OBJ_FROZEN
+	const ANIM_OBJ_MASTER_BALL_SPARKLE
+	const ANIM_OBJ_RECOVER
+	const ANIM_OBJ_2D
+	const ANIM_OBJ_2E
+	const ANIM_OBJ_2F
+	const ANIM_OBJ_THUNDER_WAVE
+	const ANIM_OBJ_31
+	const ANIM_OBJ_LIGHTNING_BOLT
+	const ANIM_OBJ_33
+	const ANIM_OBJ_34
+	const ANIM_OBJ_CLAMP
+	const ANIM_OBJ_BITE
+	const ANIM_OBJ_37
+	const ANIM_OBJ_38
+	const ANIM_OBJ_39
+	const ANIM_OBJ_3A
+	const ANIM_OBJ_3B
+	const ANIM_OBJ_3C
+	const ANIM_OBJ_3D
+	const ANIM_OBJ_GUST
+	const ANIM_OBJ_3F
+	const ANIM_OBJ_40
+	const ANIM_OBJ_41
+	const ANIM_OBJ_42
+	const ANIM_OBJ_SONICBOOM_JP
+	const ANIM_OBJ_44
+	const ANIM_OBJ_ABSORB
+	const ANIM_OBJ_EGG
+	const ANIM_OBJ_47
+	const ANIM_OBJ_48
+	const ANIM_OBJ_49
+	const ANIM_OBJ_LEECH_SEED
+	const ANIM_OBJ_4B
+	const ANIM_OBJ_WAVE
+	const ANIM_OBJ_CONFUSE_RAY
+	const ANIM_OBJ_4E
+	const ANIM_OBJ_4F
+	const ANIM_OBJ_SCREEN
+	const ANIM_OBJ_HARDEN
+	const ANIM_OBJ_CHICK
+	const ANIM_OBJ_AMNESIA
+	const ANIM_OBJ_ASLEEP
+	const ANIM_OBJ_SKULL
+	const ANIM_OBJ_56
+	const ANIM_OBJ_57
+	const ANIM_OBJ_58
+	const ANIM_OBJ_PARALYZED
+	const ANIM_OBJ_STRING_SHOT
+	const ANIM_OBJ_HAZE
+	const ANIM_OBJ_MIST
+	const ANIM_OBJ_SMOG
+	const ANIM_OBJ_POISON_GAS
+	const ANIM_OBJ_HORN
+	const ANIM_OBJ_60
+	const ANIM_OBJ_PETAL_DANCE
+	const ANIM_OBJ_SLUDGE_BOMB
+	const ANIM_OBJ_PAY_DAY
+	const ANIM_OBJ_64
+	const ANIM_OBJ_MIMIC
+	const ANIM_OBJ_ATTRACT
+	const ANIM_OBJ_BONEMERANG
+	const ANIM_OBJ_BONE_CLUB
+	const ANIM_OBJ_BONE_RUSH
+	const ANIM_OBJ_SWIFT
+	const ANIM_OBJ_KINESIS
+	const ANIM_OBJ_FLASH
+	const ANIM_OBJ_SHINY
+	const ANIM_OBJ_SKY_ATTACK
+	const ANIM_OBJ_LICK
+	const ANIM_OBJ_WITHDRAW
+	const ANIM_OBJ_71
+	const ANIM_OBJ_GROWTH
+	const ANIM_OBJ_CONVERSION2
+	const ANIM_OBJ_SMOKE
+	const ANIM_OBJ_SMOKESCREEN
+	const ANIM_OBJ_SWORDS_DANCE
+	const ANIM_OBJ_SPEED_LINE
+	const ANIM_OBJ_SHARPEN
+	const ANIM_OBJ_DEFENSE_CURL
+	const ANIM_OBJ_7A
+	const ANIM_OBJ_7B
+	const ANIM_OBJ_DISABLE
+	const ANIM_OBJ_AGILITY
+	const ANIM_OBJ_HEART
+	const ANIM_OBJ_FLAME_WHEEL
+	const ANIM_OBJ_SACRED_FIRE
+	const ANIM_OBJ_COTTON_SPORE
+	const ANIM_OBJ_MILK_DRINK
+	const ANIM_OBJ_ANGER
+	const ANIM_OBJ_84
+	const ANIM_OBJ_85
+	const ANIM_OBJ_BATON_PASS
+	const ANIM_OBJ_LOCK_ON
+	const ANIM_OBJ_MIND_READER
+	const ANIM_OBJ_SAFEGUARD
+	const ANIM_OBJ_PROTECT
+	const ANIM_OBJ_THIEF
+	const ANIM_OBJ_OCTAZOOKA
+	const ANIM_OBJ_PRESENT
+	const ANIM_OBJ_SPIKES
+	const ANIM_OBJ_POWDER_SNOW
+	const ANIM_OBJ_DRAGONBREATH
+	const ANIM_OBJ_CONVERSION
+	const ANIM_OBJ_SPIDER_WEB
+	const ANIM_OBJ_93
+	const ANIM_OBJ_NIGHTMARE
+	const ANIM_OBJ_IN_NIGHTMARE
+	const ANIM_OBJ_LOVELY_KISS
+	const ANIM_OBJ_SWEET_KISS
+	const ANIM_OBJ_SKETCH
+	const ANIM_OBJ_99
+	const ANIM_OBJ_9A
+	const ANIM_OBJ_DESTINY_BOND
+	const ANIM_OBJ_MORNING_SUN
+	const ANIM_OBJ_GLIMMER
+	const ANIM_OBJ_MOONLIGHT
+	const ANIM_OBJ_HIDDEN_POWER
+	const ANIM_OBJ_A0
+	const ANIM_OBJ_A1
+	const ANIM_OBJ_SANDSTORM
+	const ANIM_OBJ_ZAP_CANNON
+	const ANIM_OBJ_SPITE
+	const ANIM_OBJ_CURSE
+	const ANIM_OBJ_PERISH_SONG
+	const ANIM_OBJ_FORESIGHT
+	const ANIM_OBJ_RAPID_SPIN
+	const ANIM_OBJ_SWAGGER
+	const ANIM_OBJ_AA
+	const ANIM_OBJ_AB
+	const ANIM_OBJ_MEAN_LOOK
+	const ANIM_OBJ_AD
+	const ANIM_OBJ_AE
+	const ANIM_OBJ_RAIN
+	const ANIM_OBJ_B0
+	const ANIM_OBJ_PSYCH_UP
+	const ANIM_OBJ_ANCIENTPOWER
+	const ANIM_OBJ_AEROBLAST
+	const ANIM_OBJ_SHADOW_BALL
+	const ANIM_OBJ_ROCK_SMASH
+	const ANIM_OBJ_FLOWER
+	const ANIM_OBJ_COTTON
+
+const_value SET $b1
+	const ANIM_OBJ_PLAYERFEETFOLLOW
+	const ANIM_OBJ_ENEMYFEETFOLLOW
+	const ANIM_OBJ_PLAYERHEADFOLLOW
+	const ANIM_OBJ_ENEMYHEADFOLLOW
+
+; DoBattleAnimFrame arguments (see engine/battle_anims/functions.asm)
+	const_def
+	const BATTLEANIMFUNC_00
+	const BATTLEANIMFUNC_01
+	const BATTLEANIMFUNC_02
+	const BATTLEANIMFUNC_03
+	const BATTLEANIMFUNC_04
+	const BATTLEANIMFUNC_05
+	const BATTLEANIMFUNC_06
+	const BATTLEANIMFUNC_07
+	const BATTLEANIMFUNC_08
+	const BATTLEANIMFUNC_09
+	const BATTLEANIMFUNC_0A
+	const BATTLEANIMFUNC_RAZOR_LEAF
+	const BATTLEANIMFUNC_0C
+	const BATTLEANIMFUNC_0D
+	const BATTLEANIMFUNC_0E
+	const BATTLEANIMFUNC_0F
+	const BATTLEANIMFUNC_10
+	const BATTLEANIMFUNC_11
+	const BATTLEANIMFUNC_12
+	const BATTLEANIMFUNC_13
+	const BATTLEANIMFUNC_14
+	const BATTLEANIMFUNC_15
+	const BATTLEANIMFUNC_16
+	const BATTLEANIMFUNC_17
+	const BATTLEANIMFUNC_18
+	const BATTLEANIMFUNC_19
+	const BATTLEANIMFUNC_1A
+	const BATTLEANIMFUNC_1B
+	const BATTLEANIMFUNC_1C
+	const BATTLEANIMFUNC_1D
+	const BATTLEANIMFUNC_1E
+	const BATTLEANIMFUNC_1F
+	const BATTLEANIMFUNC_LEECH_SEED
+	const BATTLEANIMFUNC_21
+	const BATTLEANIMFUNC_22
+	const BATTLEANIMFUNC_23
+	const BATTLEANIMFUNC_24
+	const BATTLEANIMFUNC_25
+	const BATTLEANIMFUNC_26
+	const BATTLEANIMFUNC_27
+	const BATTLEANIMFUNC_28
+	const BATTLEANIMFUNC_SPRIAL_DESCENT
+	const BATTLEANIMFUNC_POISON_GAS
+	const BATTLEANIMFUNC_HORN
+	const BATTLEANIMFUNC_2C
+	const BATTLEANIMFUNC_2D
+	const BATTLEANIMFUNC_2E
+	const BATTLEANIMFUNC_2F
+	const BATTLEANIMFUNC_30
+	const BATTLEANIMFUNC_31
+	const BATTLEANIMFUNC_32
+	const BATTLEANIMFUNC_33
+	const BATTLEANIMFUNC_34
+	const BATTLEANIMFUNC_35
+	const BATTLEANIMFUNC_36
+	const BATTLEANIMFUNC_37
+	const BATTLEANIMFUNC_38
+	const BATTLEANIMFUNC_39
+	const BATTLEANIMFUNC_3A
+	const BATTLEANIMFUNC_3B
+	const BATTLEANIMFUNC_3C
+	const BATTLEANIMFUNC_3D
+	const BATTLEANIMFUNC_3E
+	const BATTLEANIMFUNC_3F
+	const BATTLEANIMFUNC_40
+	const BATTLEANIMFUNC_41
+	const BATTLEANIMFUNC_42
+	const BATTLEANIMFUNC_43
+	const BATTLEANIMFUNC_44
+	const BATTLEANIMFUNC_45
+	const BATTLEANIMFUNC_46
+	const BATTLEANIMFUNC_47
+	const BATTLEANIMFUNC_48
+	const BATTLEANIMFUNC_49
+	const BATTLEANIMFUNC_4A
+	const BATTLEANIMFUNC_4B
+	const BATTLEANIMFUNC_4C
+	const BATTLEANIMFUNC_4D
+	const BATTLEANIMFUNC_4E
+	const BATTLEANIMFUNC_4F
+
+; BattleAnimFrameData indexes (see data/battle_anims/framesets.asm)
+	const_def
+	const BATTLEANIMFRAMESET_00
+	const BATTLEANIMFRAMESET_01
+	const BATTLEANIMFRAMESET_02
+	const BATTLEANIMFRAMESET_03
+	const BATTLEANIMFRAMESET_04
+	const BATTLEANIMFRAMESET_05
+	const BATTLEANIMFRAMESET_06
+	const BATTLEANIMFRAMESET_07
+	const BATTLEANIMFRAMESET_08
+	const BATTLEANIMFRAMESET_09
+	const BATTLEANIMFRAMESET_0A
+	const BATTLEANIMFRAMESET_0B
+	const BATTLEANIMFRAMESET_0C
+	const BATTLEANIMFRAMESET_0D
+	const BATTLEANIMFRAMESET_0E
+	const BATTLEANIMFRAMESET_0F
+	const BATTLEANIMFRAMESET_10
+	const BATTLEANIMFRAMESET_11
+	const BATTLEANIMFRAMESET_12
+	const BATTLEANIMFRAMESET_13
+	const BATTLEANIMFRAMESET_14
+	const BATTLEANIMFRAMESET_15
+	const BATTLEANIMFRAMESET_16
+	const BATTLEANIMFRAMESET_17
+	const BATTLEANIMFRAMESET_18
+	const BATTLEANIMFRAMESET_19
+	const BATTLEANIMFRAMESET_1A
+	const BATTLEANIMFRAMESET_1B
+	const BATTLEANIMFRAMESET_1C
+	const BATTLEANIMFRAMESET_1D
+	const BATTLEANIMFRAMESET_1E
+	const BATTLEANIMFRAMESET_1F
+	const BATTLEANIMFRAMESET_20
+	const BATTLEANIMFRAMESET_21
+	const BATTLEANIMFRAMESET_22
+	const BATTLEANIMFRAMESET_23
+	const BATTLEANIMFRAMESET_24
+	const BATTLEANIMFRAMESET_25
+	const BATTLEANIMFRAMESET_26
+	const BATTLEANIMFRAMESET_27
+	const BATTLEANIMFRAMESET_28
+	const BATTLEANIMFRAMESET_29
+	const BATTLEANIMFRAMESET_2A
+	const BATTLEANIMFRAMESET_2B
+	const BATTLEANIMFRAMESET_2C
+	const BATTLEANIMFRAMESET_2D
+	const BATTLEANIMFRAMESET_2E
+	const BATTLEANIMFRAMESET_2F
+	const BATTLEANIMFRAMESET_30
+	const BATTLEANIMFRAMESET_31
+	const BATTLEANIMFRAMESET_32
+	const BATTLEANIMFRAMESET_33
+	const BATTLEANIMFRAMESET_34
+	const BATTLEANIMFRAMESET_35
+	const BATTLEANIMFRAMESET_36
+	const BATTLEANIMFRAMESET_37
+	const BATTLEANIMFRAMESET_38
+	const BATTLEANIMFRAMESET_39
+	const BATTLEANIMFRAMESET_3A
+	const BATTLEANIMFRAMESET_3B
+	const BATTLEANIMFRAMESET_3C
+	const BATTLEANIMFRAMESET_3D
+	const BATTLEANIMFRAMESET_3E
+	const BATTLEANIMFRAMESET_3F
+	const BATTLEANIMFRAMESET_40
+	const BATTLEANIMFRAMESET_41
+	const BATTLEANIMFRAMESET_42
+	const BATTLEANIMFRAMESET_43
+	const BATTLEANIMFRAMESET_44
+	const BATTLEANIMFRAMESET_45
+	const BATTLEANIMFRAMESET_46
+	const BATTLEANIMFRAMESET_47
+	const BATTLEANIMFRAMESET_48
+	const BATTLEANIMFRAMESET_49
+	const BATTLEANIMFRAMESET_4A
+	const BATTLEANIMFRAMESET_4B
+	const BATTLEANIMFRAMESET_4C
+	const BATTLEANIMFRAMESET_4D
+	const BATTLEANIMFRAMESET_4E
+	const BATTLEANIMFRAMESET_4F
+	const BATTLEANIMFRAMESET_50
+	const BATTLEANIMFRAMESET_51
+	const BATTLEANIMFRAMESET_52
+	const BATTLEANIMFRAMESET_53
+	const BATTLEANIMFRAMESET_54
+	const BATTLEANIMFRAMESET_55
+	const BATTLEANIMFRAMESET_56
+	const BATTLEANIMFRAMESET_57
+	const BATTLEANIMFRAMESET_58
+	const BATTLEANIMFRAMESET_59
+	const BATTLEANIMFRAMESET_5A
+	const BATTLEANIMFRAMESET_5B
+	const BATTLEANIMFRAMESET_5C
+	const BATTLEANIMFRAMESET_5D
+	const BATTLEANIMFRAMESET_5E
+	const BATTLEANIMFRAMESET_5F
+	const BATTLEANIMFRAMESET_60
+	const BATTLEANIMFRAMESET_61
+	const BATTLEANIMFRAMESET_62
+	const BATTLEANIMFRAMESET_63
+	const BATTLEANIMFRAMESET_64
+	const BATTLEANIMFRAMESET_65
+	const BATTLEANIMFRAMESET_66
+	const BATTLEANIMFRAMESET_67
+	const BATTLEANIMFRAMESET_68
+	const BATTLEANIMFRAMESET_69
+	const BATTLEANIMFRAMESET_6A
+	const BATTLEANIMFRAMESET_6B
+	const BATTLEANIMFRAMESET_6C
+	const BATTLEANIMFRAMESET_6D
+	const BATTLEANIMFRAMESET_6E
+	const BATTLEANIMFRAMESET_6F
+	const BATTLEANIMFRAMESET_70
+	const BATTLEANIMFRAMESET_71
+	const BATTLEANIMFRAMESET_72
+	const BATTLEANIMFRAMESET_73
+	const BATTLEANIMFRAMESET_74
+	const BATTLEANIMFRAMESET_75
+	const BATTLEANIMFRAMESET_76
+	const BATTLEANIMFRAMESET_77
+	const BATTLEANIMFRAMESET_78
+	const BATTLEANIMFRAMESET_79
+	const BATTLEANIMFRAMESET_7A
+	const BATTLEANIMFRAMESET_7B
+	const BATTLEANIMFRAMESET_7C
+	const BATTLEANIMFRAMESET_7D
+	const BATTLEANIMFRAMESET_7E
+	const BATTLEANIMFRAMESET_7F
+	const BATTLEANIMFRAMESET_80
+	const BATTLEANIMFRAMESET_81
+	const BATTLEANIMFRAMESET_82
+	const BATTLEANIMFRAMESET_83
+	const BATTLEANIMFRAMESET_84
+	const BATTLEANIMFRAMESET_85
+	const BATTLEANIMFRAMESET_86
+	const BATTLEANIMFRAMESET_87
+	const BATTLEANIMFRAMESET_88
+	const BATTLEANIMFRAMESET_89
+	const BATTLEANIMFRAMESET_8A
+	const BATTLEANIMFRAMESET_8B
+	const BATTLEANIMFRAMESET_8C
+	const BATTLEANIMFRAMESET_8D
+	const BATTLEANIMFRAMESET_8E
+	const BATTLEANIMFRAMESET_8F
+	const BATTLEANIMFRAMESET_90
+	const BATTLEANIMFRAMESET_91
+	const BATTLEANIMFRAMESET_92
+	const BATTLEANIMFRAMESET_93
+	const BATTLEANIMFRAMESET_94
+	const BATTLEANIMFRAMESET_95
+	const BATTLEANIMFRAMESET_96
+	const BATTLEANIMFRAMESET_97
+	const BATTLEANIMFRAMESET_98
+	const BATTLEANIMFRAMESET_99
+	const BATTLEANIMFRAMESET_9A
+	const BATTLEANIMFRAMESET_9B
+	const BATTLEANIMFRAMESET_9C
+	const BATTLEANIMFRAMESET_9D
+	const BATTLEANIMFRAMESET_9E
+	const BATTLEANIMFRAMESET_9F
+	const BATTLEANIMFRAMESET_A0
+	const BATTLEANIMFRAMESET_A1
+	const BATTLEANIMFRAMESET_A2
+	const BATTLEANIMFRAMESET_A3
+	const BATTLEANIMFRAMESET_A4
+	const BATTLEANIMFRAMESET_A5
+	const BATTLEANIMFRAMESET_A6
+	const BATTLEANIMFRAMESET_A7
+	const BATTLEANIMFRAMESET_A8
+	const BATTLEANIMFRAMESET_A9
+	const BATTLEANIMFRAMESET_AA
+	const BATTLEANIMFRAMESET_AB
+	const BATTLEANIMFRAMESET_AC
+	const BATTLEANIMFRAMESET_AD
+	const BATTLEANIMFRAMESET_AE
+	const BATTLEANIMFRAMESET_AF
+	const BATTLEANIMFRAMESET_B0
+	const BATTLEANIMFRAMESET_B1
+	const BATTLEANIMFRAMESET_B2
+	const BATTLEANIMFRAMESET_B3
+	const BATTLEANIMFRAMESET_B4
+	const BATTLEANIMFRAMESET_B5
+	const BATTLEANIMFRAMESET_B6
+	const BATTLEANIMFRAMESET_B7
+	const BATTLEANIMFRAMESET_B8
+
+; BattleAnimOAMData indexes (see data/battle_anims/oam.asm)
+	const_def
+	const BATTLEANIMOAMSET_00
+	const BATTLEANIMOAMSET_01
+	const BATTLEANIMOAMSET_02
+	const BATTLEANIMOAMSET_03
+	const BATTLEANIMOAMSET_04
+	const BATTLEANIMOAMSET_05
+	const BATTLEANIMOAMSET_06
+	const BATTLEANIMOAMSET_07
+	const BATTLEANIMOAMSET_08
+	const BATTLEANIMOAMSET_09
+	const BATTLEANIMOAMSET_0A
+	const BATTLEANIMOAMSET_0B
+	const BATTLEANIMOAMSET_0C
+	const BATTLEANIMOAMSET_0D
+	const BATTLEANIMOAMSET_0E
+	const BATTLEANIMOAMSET_0F
+	const BATTLEANIMOAMSET_10
+	const BATTLEANIMOAMSET_11
+	const BATTLEANIMOAMSET_12
+	const BATTLEANIMOAMSET_13
+	const BATTLEANIMOAMSET_14
+	const BATTLEANIMOAMSET_15
+	const BATTLEANIMOAMSET_16
+	const BATTLEANIMOAMSET_17
+	const BATTLEANIMOAMSET_18
+	const BATTLEANIMOAMSET_19
+	const BATTLEANIMOAMSET_1A
+	const BATTLEANIMOAMSET_1B
+	const BATTLEANIMOAMSET_1C
+	const BATTLEANIMOAMSET_1D
+	const BATTLEANIMOAMSET_1E
+	const BATTLEANIMOAMSET_1F
+	const BATTLEANIMOAMSET_20
+	const BATTLEANIMOAMSET_21
+	const BATTLEANIMOAMSET_22
+	const BATTLEANIMOAMSET_23
+	const BATTLEANIMOAMSET_24
+	const BATTLEANIMOAMSET_25
+	const BATTLEANIMOAMSET_26
+	const BATTLEANIMOAMSET_27
+	const BATTLEANIMOAMSET_28
+	const BATTLEANIMOAMSET_29
+	const BATTLEANIMOAMSET_2A
+	const BATTLEANIMOAMSET_2B
+	const BATTLEANIMOAMSET_2C
+	const BATTLEANIMOAMSET_2D
+	const BATTLEANIMOAMSET_2E
+	const BATTLEANIMOAMSET_2F
+	const BATTLEANIMOAMSET_30
+	const BATTLEANIMOAMSET_31
+	const BATTLEANIMOAMSET_32
+	const BATTLEANIMOAMSET_33
+	const BATTLEANIMOAMSET_34
+	const BATTLEANIMOAMSET_35
+	const BATTLEANIMOAMSET_36
+	const BATTLEANIMOAMSET_37
+	const BATTLEANIMOAMSET_38
+	const BATTLEANIMOAMSET_39
+	const BATTLEANIMOAMSET_3A
+	const BATTLEANIMOAMSET_3B
+	const BATTLEANIMOAMSET_3C
+	const BATTLEANIMOAMSET_3D
+	const BATTLEANIMOAMSET_3E
+	const BATTLEANIMOAMSET_3F
+	const BATTLEANIMOAMSET_40
+	const BATTLEANIMOAMSET_41
+	const BATTLEANIMOAMSET_42
+	const BATTLEANIMOAMSET_43
+	const BATTLEANIMOAMSET_44
+	const BATTLEANIMOAMSET_45
+	const BATTLEANIMOAMSET_46
+	const BATTLEANIMOAMSET_47
+	const BATTLEANIMOAMSET_48
+	const BATTLEANIMOAMSET_49
+	const BATTLEANIMOAMSET_4A
+	const BATTLEANIMOAMSET_4B
+	const BATTLEANIMOAMSET_4C
+	const BATTLEANIMOAMSET_4D
+	const BATTLEANIMOAMSET_4E
+	const BATTLEANIMOAMSET_4F
+	const BATTLEANIMOAMSET_50
+	const BATTLEANIMOAMSET_51
+	const BATTLEANIMOAMSET_52
+	const BATTLEANIMOAMSET_53
+	const BATTLEANIMOAMSET_54
+	const BATTLEANIMOAMSET_55
+	const BATTLEANIMOAMSET_56
+	const BATTLEANIMOAMSET_57
+	const BATTLEANIMOAMSET_58
+	const BATTLEANIMOAMSET_59
+	const BATTLEANIMOAMSET_5A
+	const BATTLEANIMOAMSET_5B
+	const BATTLEANIMOAMSET_5C
+	const BATTLEANIMOAMSET_5D
+	const BATTLEANIMOAMSET_5E
+	const BATTLEANIMOAMSET_5F
+	const BATTLEANIMOAMSET_60
+	const BATTLEANIMOAMSET_61
+	const BATTLEANIMOAMSET_62
+	const BATTLEANIMOAMSET_63
+	const BATTLEANIMOAMSET_64
+	const BATTLEANIMOAMSET_65
+	const BATTLEANIMOAMSET_66
+	const BATTLEANIMOAMSET_67
+	const BATTLEANIMOAMSET_68
+	const BATTLEANIMOAMSET_69
+	const BATTLEANIMOAMSET_6A
+	const BATTLEANIMOAMSET_6B
+	const BATTLEANIMOAMSET_6C
+	const BATTLEANIMOAMSET_6D
+	const BATTLEANIMOAMSET_6E
+	const BATTLEANIMOAMSET_6F
+	const BATTLEANIMOAMSET_70
+	const BATTLEANIMOAMSET_71
+	const BATTLEANIMOAMSET_72
+	const BATTLEANIMOAMSET_73
+	const BATTLEANIMOAMSET_74
+	const BATTLEANIMOAMSET_75
+	const BATTLEANIMOAMSET_76
+	const BATTLEANIMOAMSET_77
+	const BATTLEANIMOAMSET_78
+	const BATTLEANIMOAMSET_79
+	const BATTLEANIMOAMSET_7A
+	const BATTLEANIMOAMSET_7B
+	const BATTLEANIMOAMSET_7C
+	const BATTLEANIMOAMSET_7D
+	const BATTLEANIMOAMSET_7E
+	const BATTLEANIMOAMSET_7F
+	const BATTLEANIMOAMSET_80
+	const BATTLEANIMOAMSET_81
+	const BATTLEANIMOAMSET_82
+	const BATTLEANIMOAMSET_83
+	const BATTLEANIMOAMSET_84
+	const BATTLEANIMOAMSET_85
+	const BATTLEANIMOAMSET_86
+	const BATTLEANIMOAMSET_87
+	const BATTLEANIMOAMSET_88
+	const BATTLEANIMOAMSET_89
+	const BATTLEANIMOAMSET_8A
+	const BATTLEANIMOAMSET_8B
+	const BATTLEANIMOAMSET_8C
+	const BATTLEANIMOAMSET_8D
+	const BATTLEANIMOAMSET_8E
+	const BATTLEANIMOAMSET_8F
+	const BATTLEANIMOAMSET_90
+	const BATTLEANIMOAMSET_91
+	const BATTLEANIMOAMSET_92
+	const BATTLEANIMOAMSET_93
+	const BATTLEANIMOAMSET_94
+	const BATTLEANIMOAMSET_95
+	const BATTLEANIMOAMSET_96
+	const BATTLEANIMOAMSET_97
+	const BATTLEANIMOAMSET_98
+	const BATTLEANIMOAMSET_99
+	const BATTLEANIMOAMSET_9A
+	const BATTLEANIMOAMSET_9B
+	const BATTLEANIMOAMSET_9C
+	const BATTLEANIMOAMSET_9D
+	const BATTLEANIMOAMSET_9E
+	const BATTLEANIMOAMSET_9F
+	const BATTLEANIMOAMSET_A0
+	const BATTLEANIMOAMSET_A1
+	const BATTLEANIMOAMSET_A2
+	const BATTLEANIMOAMSET_A3
+	const BATTLEANIMOAMSET_A4
+	const BATTLEANIMOAMSET_A5
+	const BATTLEANIMOAMSET_A6
+	const BATTLEANIMOAMSET_A7
+	const BATTLEANIMOAMSET_A8
+	const BATTLEANIMOAMSET_A9
+	const BATTLEANIMOAMSET_AA
+	const BATTLEANIMOAMSET_AB
+	const BATTLEANIMOAMSET_AC
+	const BATTLEANIMOAMSET_AD
+	const BATTLEANIMOAMSET_AE
+	const BATTLEANIMOAMSET_AF
+	const BATTLEANIMOAMSET_B0
+	const BATTLEANIMOAMSET_B1
+	const BATTLEANIMOAMSET_B2
+	const BATTLEANIMOAMSET_B3
+	const BATTLEANIMOAMSET_B4
+	const BATTLEANIMOAMSET_B5
+	const BATTLEANIMOAMSET_B6
+	const BATTLEANIMOAMSET_B7
+	const BATTLEANIMOAMSET_B8
+	const BATTLEANIMOAMSET_B9
+	const BATTLEANIMOAMSET_BA
+	const BATTLEANIMOAMSET_BB
+	const BATTLEANIMOAMSET_BC
+	const BATTLEANIMOAMSET_BD
+	const BATTLEANIMOAMSET_BE
+	const BATTLEANIMOAMSET_BF
+	const BATTLEANIMOAMSET_C0
+	const BATTLEANIMOAMSET_C1
+	const BATTLEANIMOAMSET_C2
+	const BATTLEANIMOAMSET_C3
+	const BATTLEANIMOAMSET_C4
+	const BATTLEANIMOAMSET_C5
+	const BATTLEANIMOAMSET_C6
+	const BATTLEANIMOAMSET_C7
+	const BATTLEANIMOAMSET_C8
+	const BATTLEANIMOAMSET_C9
+	const BATTLEANIMOAMSET_CA
+	const BATTLEANIMOAMSET_CB
+	const BATTLEANIMOAMSET_CC
+	const BATTLEANIMOAMSET_CD
+	const BATTLEANIMOAMSET_CE
+	const BATTLEANIMOAMSET_CF
+	const BATTLEANIMOAMSET_D0
+	const BATTLEANIMOAMSET_D1
+	const BATTLEANIMOAMSET_D2
+	const BATTLEANIMOAMSET_D3
+	const BATTLEANIMOAMSET_D4
+	const BATTLEANIMOAMSET_D5
+	const BATTLEANIMOAMSET_D6
+	const BATTLEANIMOAMSET_D7
+
+; BattleBGEffects indexes (see engine/battle_anims/bg_effects.asm)
+	const_def 1
+	const ANIM_BG_FLASH_INVERTED
+	const ANIM_BG_FLASH_WHITE
+	const ANIM_BG_WHITE_HUES
+	const ANIM_BG_BLACK_HUES
+	const ANIM_BG_ALTERNATE_HUES
+	const ANIM_BG_06
+	const ANIM_BG_07
+	const ANIM_BG_08
+	const ANIM_BG_HIDE_MON
+	const ANIM_BG_SHOW_MON
+	const ANIM_BG_ENTER_MON
+	const ANIM_BG_RETURN_MON
+	const ANIM_BG_SURF
+	;const ANIM_BG_WHIRLPOOL
+	const ANIM_BG_TELEPORT
+	const ANIM_BG_NIGHT_SHADE
+	const ANIM_BG_FEET_FOLLOW
+	const ANIM_BG_HEAD_FOLLOW
+	const ANIM_BG_DOUBLE_TEAM
+	const ANIM_BG_ACID_ARMOR
+	const ANIM_BG_RAPID_FLASH
+	const ANIM_BG_16
+	const ANIM_BG_17
+	const ANIM_BG_18
+	const ANIM_BG_19
+	const ANIM_BG_1A
+	const ANIM_BG_1B
+	const ANIM_BG_1C
+	const ANIM_BG_1D
+	const ANIM_BG_1E
+	const ANIM_BG_1F
+	const ANIM_BG_20
+	const ANIM_BG_WITHDRAW
+	const ANIM_BG_BOUNCE_DOWN
+	const ANIM_BG_DIG
+	const ANIM_BG_TACKLE
+	;const ANIM_BG_25
+	const ANIM_BG_26
+	const ANIM_BG_27
+	const ANIM_BG_WAVE_DEFORM_USER
+	const ANIM_BG_PSYCHIC
+	const ANIM_BG_2A
+	const ANIM_BG_2B
+	const ANIM_BG_2C
+	const ANIM_BG_2D
+	const ANIM_BG_2E
+	const ANIM_BG_2F
+	;const ANIM_BG_30
+	;const ANIM_BG_31
+	;const ANIM_BG_32
+	;const ANIM_BG_VIBRATE_MON
+	;const ANIM_BG_WOBBLE_MON
+	;const ANIM_BG_35
+
+; AnimObjGFX indexes (see data/battle_anims/object_gfx.asm)
+	const_def 1
+	const ANIM_GFX_HIT
+	const ANIM_GFX_CUT
+	const ANIM_GFX_FIRE
+	const ANIM_GFX_WATER
+	const ANIM_GFX_LIGHTNING
+	const ANIM_GFX_PLANT
+	const ANIM_GFX_SMOKE
+	const ANIM_GFX_EXPLOSION
+	const ANIM_GFX_ROCKS
+	const ANIM_GFX_ICE
+	const ANIM_GFX_POKE_BALL
+	const ANIM_GFX_POISON
+	const ANIM_GFX_BUBBLE
+	const ANIM_GFX_NOISE
+	const ANIM_GFX_POWDER
+	const ANIM_GFX_BEAM
+	const ANIM_GFX_SPEED
+	const ANIM_GFX_CHARGE
+	const ANIM_GFX_WIND
+	const ANIM_GFX_WHIP
+	const ANIM_GFX_EGG
+	const ANIM_GFX_ROPE
+	const ANIM_GFX_PSYCHIC
+	const ANIM_GFX_REFLECT
+	const ANIM_GFX_STATUS
+	const ANIM_GFX_SAND
+	const ANIM_GFX_WEB
+	const ANIM_GFX_HAZE
+	const ANIM_GFX_HORN
+	const ANIM_GFX_FLOWER
+	const ANIM_GFX_MISC
+	const ANIM_GFX_SKY_ATTACK
+	const ANIM_GFX_GLOBE
+	const ANIM_GFX_SHAPES
+	const ANIM_GFX_OBJECTS
+	const ANIM_GFX_SHINE
+	const ANIM_GFX_ANGELS
+	const ANIM_GFX_WAVE
+	const ANIM_GFX_AEROBLAST
+
+; battle_bg_effect struct members (see macros/wram.asm)
+	const_def
+	const BG_EFFECT_STRUCT_FUNCTION
+	const BG_EFFECT_STRUCT_JT_INDEX
+	const BG_EFFECT_STRUCT_BATTLE_TURN
+	const BG_EFFECT_STRUCT_03
+
+; battle palettes
+	const_def
+	const PAL_BATTLE_BG_PLAYER    ; 0
+	const PAL_BATTLE_BG_ENEMY     ; 1
+	const PAL_BATTLE_BG_ENEMY_HP  ; 2
+	const PAL_BATTLE_BG_PLAYER_HP ; 3
+	const PAL_BATTLE_BG_EXP       ; 4
+	const PAL_BATTLE_BG_5         ; 5
+	const PAL_BATTLE_BG_6         ; 6
+	const PAL_BATTLE_BG_TEXT      ; 7
+
+; animation object palettes
+	const_def
+	const PAL_BATTLE_OB_ENEMY  ; 0
+	const PAL_BATTLE_OB_PLAYER ; 1
+	const PAL_BATTLE_OB_GRAY   ; 2
+	const PAL_BATTLE_OB_YELLOW ; 3
+	const PAL_BATTLE_OB_RED    ; 4
+	const PAL_BATTLE_OB_GREEN  ; 5
+	const PAL_BATTLE_OB_BLUE   ; 6
+	const PAL_BATTLE_OB_BROWN  ; 7
diff --git a/data/predef_pointers.inc b/data/predef_pointers.inc
index f987419..691a072 100644
--- a/data/predef_pointers.inc
+++ b/data/predef_pointers.inc
@@ -84,7 +84,7 @@ GiveItemPredef::
 	add_predef Function_145b8
 	add_predef Function_146dc
 	add_predef Function_145de
-	add_predef Function_c8000
+	add_predef ExecuteBGEffects
 	add_predef Function_1457a
 	add_predef Function_143e0
 	add_predef CheckSGB
diff --git a/engine/battle_anims/bg_effects.asm b/engine/battle_anims/bg_effects.asm
new file mode 100644
index 0000000..c8e42f2
--- /dev/null
+++ b/engine/battle_anims/bg_effects.asm
@@ -0,0 +1,2376 @@
+include "constants.asm"
+
+SECTION "Battle Anims BG Effects", ROMX [$4000], BANK [$32]
+
+	const_def
+	const BGSQUARE_SIX
+	const BGSQUARE_FOUR
+	const BGSQUARE_TWO
+	const BGSQUARE_SEVEN
+	const BGSQUARE_FIVE
+	const BGSQUARE_THREE
+
+; BG effects for use in battle animations.
+
+ExecuteBGEffects: ; c8000 (32:4000)
+	ld hl, wActiveBGEffects
+	ld e, 5
+.loop
+	ld a, [hl]
+	and a
+	jr z, .next
+	ld c, l
+	ld b, h
+	push hl
+	push de
+	call DoBattleBGEffectFunction
+	pop de
+	pop hl
+.next
+	ld bc, 4
+	add hl, bc
+	dec e
+	jr nz, .loop
+	ret
+
+QueueBGEffect: ; c801a (32:401a)
+	ld hl, wActiveBGEffects
+	ld e, 5
+.loop
+	ld a, [hl]
+	and a
+	jr z, .load
+	ld bc, 4
+	add hl, bc
+	dec e
+	jr nz, .loop
+	scf
+	ret
+
+.load
+	ld c, l
+	ld b, h
+	ld hl, BG_EFFECT_STRUCT_FUNCTION
+	add hl, bc
+	ld a, [wBattleAnimTemp0]
+	ld [hli], a
+	ld a, [wBattleAnimTemp1]
+	ld [hli], a
+	ld a, [wBattleAnimTemp2]
+	ld [hli], a
+	ld a, [wBattleAnimTemp3]
+	ld [hl], a
+	ret
+
+EndBattleBGEffect: ; c8043 (32:4043)
+	ld hl, BG_EFFECT_STRUCT_FUNCTION
+	add hl, bc
+	ld [hl], 0
+	ret
+
+DoBattleBGEffectFunction: ; c804a (32:404a)
+	ld hl, BG_EFFECT_STRUCT_FUNCTION
+	add hl, bc
+	ld e, [hl]
+	ld d, 0
+	ld hl, BattleBGEffects
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	jp hl
+
+BattleBGEffects: ; c805a (32:405a)
+; entries correspond to ANIM_BG_* constants
+	dw BattleBGEffect_End
+	dw BattleBGEffect_FlashInverted
+	dw BattleBGEffect_FlashWhite
+	dw BattleBGEffect_WhiteHues
+	dw BattleBGEffect_BlackHues
+	dw BattleBGEffect_AlternateHues
+	dw BattleBGEffect_06
+	dw BattleBGEffect_07
+	dw BattleBGEffect_08
+	dw BattleBGEffect_HideMon
+	dw BattleBGEffect_ShowMon
+	dw BattleBGEffect_EnterMon
+	dw BattleBGEffect_ReturnMon
+	dw BattleBGEffect_Surf
+	;dw BattleBGEffect_Whirlpool
+	dw BattleBGEffect_Teleport
+	dw BattleBGEffect_NightShade
+	dw BattleBGEffect_FeetFollow
+	dw BattleBGEffect_HeadFollow
+	dw BattleBGEffect_DoubleTeam
+	dw BattleBGEffect_AcidArmor
+	dw BattleBGEffect_RapidFlash
+	dw BattleBGEffect_16
+	dw BattleBGEffect_17
+	dw BattleBGEffect_18
+	dw BattleBGEffect_19
+	dw BattleBGEffect_1a
+	dw BattleBGEffect_1b
+	dw BattleBGEffect_1c
+	dw BattleBGEffect_1d
+	dw BattleBGEffect_1e
+	dw BattleBGEffect_1f
+	dw BattleBGEffect_20
+	dw BattleBGEffect_Withdraw
+	dw BattleBGEffect_BounceDown
+	dw BattleBGEffect_Dig
+	dw BattleBGEffect_Tackle
+	;dw BattleBGEffect_25
+	dw BattleBGEffect_26
+	dw BattleBGEffect_27
+	dw BattleBGEffect_28
+	dw BattleBGEffect_Psychic
+	dw BattleBGEffect_2a
+	dw BattleBGEffect_2b
+	dw BattleBGEffect_2c
+	dw BattleBGEffect_2d
+	dw BattleBGEffect_2e
+	dw BattleBGEffect_2f
+	;dw BattleBGEffect_30
+	;dw BattleBGEffect_31
+	;dw BattleBGEffect_32
+	;dw BattleBGEffect_VibrateMon
+	;dw BattleBGEffect_WobbleMon
+
+
+BattleBGEffect_End: ; c80c6 (32:40c6)
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffects_AnonJumptable: ; c80d7 (32:40d7)
+	ld hl, sp+$0
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+	inc de
+BatttleBGEffects_GetNamedJumptablePointer: ; c80ca (32:40ca)
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld l, [hl]
+	ld h, 0
+	add hl, hl
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	ret
+
+BattleBGEffects_IncrementJumptable: ; c80e5 (32:40e5)
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	inc [hl]
+	ret
+
+BattleBGEffect_FlashInverted: ; c80eb (32:40eb)
+	ld de, .inverted
+	call BattleBGEffect_FlashContinue
+	ret
+
+.inverted
+	db %11100100 ; 3210
+	db %00011011 ; 0123
+; c80f3
+
+BattleBGEffect_FlashWhite: ; c80f3 (32:40f3)
+	ld de, .white
+	call BattleBGEffect_FlashContinue
+	ret
+
+.white
+	db %11100100 ; 3210
+	db %00000000 ; 0000
+; c80fb
+
+BattleBGEffect_FlashContinue: ; c80fb (32:40fb)
+; current timer, flash duration, number of flashes
+	ld a, $1
+	ld [wBattleAnimTemp0], a
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .init
+	dec [hl]
+	ret
+
+.init
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld [hl], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .apply_pal
+	call EndBattleBGEffect
+	ret
+
+.apply_pal
+	dec a
+	ld [hl], a
+	and 1
+	ld l, a
+	ld h, 0
+	add hl, de
+	ld a, [hl]
+	ld [wBGP], a
+	ret
+
+BattleBGEffect_WhiteHues: ; c812d (32:412d)
+	ld de, .Pals
+	call BattleBGEffect_GetNthDMGPal
+	jr c, .quit
+	ld [wBGP], a
+	ret
+
+.quit
+	call EndBattleBGEffect
+	ret
+
+.Pals:
+	db %11100100
+	db %11100000
+	db %11010000
+	db -1
+; c8141
+
+BattleBGEffect_BlackHues: ; c8141 (32:4141)
+	ld de, .Pals
+	call BattleBGEffect_GetNthDMGPal
+	jr c, .quit
+	ld [wBGP], a
+	ret
+
+.quit
+	call EndBattleBGEffect
+	ret
+
+.Pals:
+	db %11100100
+	db %11110100
+	db %11111000
+	db -1
+; c8155
+
+BattleBGEffect_AlternateHues: ; c8155 (32:4155)
+	ld de, .Pals
+	call BattleBGEffect_GetNthDMGPal
+	jr c, .quit
+	ld [wBGP], a
+	ld [wOBP1], a
+	ret
+
+.quit
+	call EndBattleBGEffect
+	ret
+
+.Pals:
+	db %11100100
+	db %11111000
+	db %11111100
+	db %11111000
+	db %11100100
+	db %10010000
+	db %01000000
+	db %10010000
+	db -2
+; c8171
+
+BattleBGEffect_06: ; c8171 (32:4171)
+	call BattleBGEffects_CheckSGB
+	jr nz, .sgb
+	ld de, .PalsCGB
+	jr .okay
+
+.sgb
+	ld de, .PalsSGB
+.okay
+	call BattleBGEffect_GetNthDMGPal
+	ld [wOBP0], a
+	ret
+
+.PalsCGB:
+	db %11100100
+	db %10010000
+	db -2
+
+.PalsSGB:
+	db %11110000
+	db %11000000
+	db -2
+; c818b
+
+BattleBGEffect_07: ; c818b (32:418b)
+	call BattleBGEffects_CheckSGB
+	jr nz, .sgb
+	ld de, .PalsCGB
+	jr .okay
+
+.sgb
+	ld de, .PalsSGB
+.okay
+	call BattleBGEffect_GetNthDMGPal
+	ld [wOBP0], a
+	ret
+
+.PalsCGB:
+	db %11100100
+	db %11011000
+	db -2
+
+.PalsSGB:
+	db %11110000
+	db %11001100
+	db -2
+; c81a5
+
+BattleBGEffect_08: ; c81a5 (32:41a5)
+	ld de, .Pals
+	call BattleBGEffect_GetNthDMGPal
+	ld [wBGP], a
+	ret
+
+.Pals:
+	db %00011011
+	db %01100011
+	db %10000111
+	db -2
+; c81b3
+
+BattleBGEffect_HideMon: ; c81b3 (32:41b3)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw .four
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_side
+	hlcoord 12, 0
+	lb bc, 7, 7
+	jr .got_pointer
+
+.player_side
+	hlcoord 2, 6
+	lb bc, 6, 6
+.got_pointer
+	call ClearBox
+	pop bc
+	ld a, $1
+	ldh [hBGMapMode], a
+	ret
+
+.four
+	xor a
+	ldh [hBGMapMode], a
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffect_ShowMon: ; c81ea (32:41ea)
+	call BGEffect_CheckFlyDigStatus
+	jr z, .not_flying
+	call EndBattleBGEffect
+	ret
+
+.not_flying
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_side
+	ld de, .EnemyData
+	jr .got_pointer
+
+.player_side
+	ld de, .PlayerData
+.got_pointer
+	ld a, e
+	ld [wBattleAnimTemp1], a
+	ld a, d
+	ld [wBattleAnimTemp2], a
+	call BattleBGEffect_RunPicResizeScript
+	ret
+
+.PlayerData:
+	db  0, $31, 0
+	db -1
+.EnemyData:
+	db  3, $00, 3
+	db -1
+; c8214
+
+BattleBGEffect_FeetFollow: ; c8214 (32:4214)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw .five
+
+
+.zero
+	call BGEffect_CheckFlyDigStatus
+	jr z, .not_flying_digging
+	call EndBattleBGEffect
+	ret
+
+.not_flying_digging
+	call BattleBGEffects_IncrementJumptable
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	ld a, ANIM_OBJ_PLAYERFEETFOLLOW
+	ld [wBattleAnimTemp0], a
+	ld a, 16 * 8 + 4
+	jr .okay
+
+.player_turn
+	ld a, ANIM_OBJ_ENEMYFEETFOLLOW
+	ld [wBattleAnimTemp0], a
+	ld a, 6 * 8
+.okay
+	ld [wBattleAnimTemp1], a
+	ld a, 8 * 8
+	ld [wBattleAnimTemp2], a
+	xor a
+	ld [wBattleAnimTemp3], a
+	call _QueueBattleAnimation
+	pop bc
+	ret
+
+.one
+	call BattleBGEffects_IncrementJumptable
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn_2
+	hlcoord 12, 6
+	lb bc, 1, 7
+	jr .okay2
+
+.player_turn_2
+	hlcoord 2, 6
+	lb bc, 1, 6
+.okay2
+	call ClearBox
+	ld a, $1
+	ldh [hBGMapMode], a
+	pop bc
+	ret
+
+.five
+	xor a
+	ldh [hBGMapMode], a
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffect_HeadFollow: ; c8281 (32:4281)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw .five
+
+
+.zero
+	call BGEffect_CheckFlyDigStatus
+	jr z, .not_flying_digging
+	call EndBattleBGEffect
+	ret
+
+.not_flying_digging
+	call BattleBGEffects_IncrementJumptable
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	ld a, ANIM_OBJ_PLAYERHEADFOLLOW
+	ld [wBattleAnimTemp0], a
+	ld a, 16 * 8 + 4
+	jr .okay
+
+.player_turn
+	ld a, ANIM_OBJ_ENEMYHEADFOLLOW
+	ld [wBattleAnimTemp0], a
+	ld a, 6 * 8
+.okay
+	ld [wBattleAnimTemp1], a
+	ld a, 8 * 8
+	ld [wBattleAnimTemp2], a
+	xor a
+	ld [wBattleAnimTemp3], a
+	call _QueueBattleAnimation
+	pop bc
+	ret
+
+.one
+	call BattleBGEffects_IncrementJumptable
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn_2
+	hlcoord 12, 5
+	lb bc, 2, 7
+	jr .okay2
+
+.player_turn_2
+	hlcoord 2, 6
+	lb bc, 2, 6
+.okay2
+	call ClearBox
+	ld a, $1
+	ldh [hBGMapMode], a
+	pop bc
+	ret
+
+.five
+	xor a
+	ldh [hBGMapMode], a
+	call EndBattleBGEffect
+	ret
+
+_QueueBattleAnimation: ; c82ee (32:42ee)
+	callfar QueueBattleAnimation
+	ret
+
+BattleBGEffect_27: ; c82f5 (32:42f5)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw .four
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BGEffect_CheckBattleTurn
+	ld [hl], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $8
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .user_2
+	hlcoord 0, 6
+	lb de, 8, 6
+.row1
+	push de
+	push hl
+.col1
+	inc hl
+	ld a, [hld]
+	ld [hli], a
+	dec d
+	jr nz, .col1
+	pop hl
+	ld de, SCREEN_WIDTH
+	add hl, de
+	pop de
+	dec e
+	jr nz, .row1
+	jr .okay2
+
+.user_2
+	hlcoord 19, 0
+	lb de, 8, 7
+.row2
+	push de
+	push hl
+.col2
+	dec hl
+	ld a, [hli]
+	ld [hld], a
+	dec d
+	jr nz, .col2
+	pop hl
+	ld de, SCREEN_WIDTH
+	add hl, de
+	pop de
+	dec e
+	jr nz, .row2
+.okay2
+	ld a, $1
+	ldh [hBGMapMode], a
+	call BattleBGEffects_IncrementJumptable
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	dec [hl]
+	ret
+
+.four
+	xor a
+	ldh [hBGMapMode], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .done
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld [hl], $1
+	ret
+
+.done
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffect_EnterMon: ; c837b (32:437b)
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	ld de, .EnemyData
+	jr .okay
+
+.player_turn
+	ld de, .PlayerData
+.okay
+	ld a, e
+	ld [wBattleAnimTemp1], a
+	ld a, d
+	ld [wBattleAnimTemp2], a
+	call BattleBGEffect_RunPicResizeScript
+	ret
+
+.PlayerData:
+	db  2, $31, 2
+	db  1, $31, 1
+	db  0, $31, 0
+	db -1
+.EnemyData:
+	db  5, $00, 5
+	db  4, $00, 4
+	db  3, $00, 3
+	db -1
+; c83a8
+
+BattleBGEffect_ReturnMon: ; c83a8 (32:43a8)
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	ld de, .EnemyData
+	jr .okay
+
+.player_turn
+	ld de, .PlayerData
+.okay
+	ld a, e
+	ld [wBattleAnimTemp1], a
+	ld a, d
+	ld [wBattleAnimTemp2], a
+	call BattleBGEffect_RunPicResizeScript
+	ret
+
+.PlayerData:
+	db  0, $31, 0
+	db -2, $66, 0
+	db  1, $31, 1
+	db -2, $44, 1
+	db  2, $31, 2
+	db -2, $22, 2
+	db -3, $00, 0
+	db -1
+.EnemyData:
+	db  3, $00, 3
+	db -2, $77, 3
+	db  4, $00, 4
+	db -2, $55, 4
+	db  5, $00, 5
+	db -2, $33, 5
+	db -3, $00, 0
+	db -1
+; c83ed
+
+BattleBGEffect_RunPicResizeScript: ; c83ed (32:43ed)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw BattleBGEffects_IncrementJumptable
+	dw .restart
+	dw .end
+
+
+.zero
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld e, [hl]
+	ld d, $0
+	inc [hl]
+	ld a, [wBattleAnimTemp1]
+	ld l, a
+	ld a, [wBattleAnimTemp2]
+	ld h, a
+	add hl, de
+	add hl, de
+	add hl, de
+	ld a, [hl]
+	cp -1
+	jr z, .end
+	cp -2
+	jr z, .clear
+	cp -3
+	jr z, .skip
+	call .PlaceGraphic
+.skip
+	call BattleBGEffects_IncrementJumptable
+	ld a, $1
+	ldh [hBGMapMode], a
+	ret
+
+.clear
+	call .ClearBox
+	jr .zero
+
+.restart
+	xor a
+	ldh [hBGMapMode], a
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld [hl], $0
+	ret
+
+.end
+	xor a
+	ldh [hBGMapMode], a
+	call EndBattleBGEffect
+	ret
+
+.ClearBox:
+; get dims
+	push bc
+	inc hl
+	ld a, [hli]
+	ld b, a
+	and $f
+	ld c, a
+	ld a, b
+	swap a
+	and $f
+	ld b, a
+; get coords
+	ld e, [hl]
+	ld d, 0
+	ld hl, .Coords
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	call ClearBox
+	pop bc
+	ret
+
+.PlaceGraphic:
+; get dims
+	push bc
+	push hl
+	ld e, [hl]
+	ld d, 0
+	ld hl, .BGSquares
+	add hl, de
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld b, a
+	and $f
+	ld c, a
+	ld a, b
+	swap a
+	and $f
+	ld b, a
+; store pointer
+	ld e, [hl]
+	inc hl
+	ld d, [hl]
+; get byte
+	pop hl
+	inc hl
+	ld a, [hli]
+	ld [wBattleAnimTemp0], a
+; get coord
+	push de
+	ld e, [hl]
+	ld d, 0
+	ld hl, .Coords
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	pop de
+; fill box
+.row
+	push bc
+	push hl
+	ld a, [wBattleAnimTemp0]
+	ld b, a
+.col
+	ld a, [de]
+	add b
+	ld [hli], a
+	inc de
+	dec c
+	jr nz, .col
+	pop hl
+	ld bc, SCREEN_WIDTH
+	add hl, bc
+	pop bc
+	dec b
+	jr nz, .row
+	pop bc
+	ret
+
+.Coords:
+	dwcoord  2,  6
+	dwcoord  3,  8
+	dwcoord  4, 10
+	dwcoord 12,  0
+	dwcoord 13,  2
+	dwcoord 14,  4
+
+.BGSquares:
+bgsquare: MACRO
+	dn \1, \2
+	dw \3
+ENDM
+
+	bgsquare 6, 6, .SixBySix
+	bgsquare 4, 4, .FourByFour
+	bgsquare 2, 2, .TwoByTwo
+	bgsquare 7, 7, .SevenBySeven
+	bgsquare 5, 5, .FiveByFive
+	bgsquare 3, 3, .ThreeByThree
+
+.SixBySix:
+	db $00, $06, $0c, $12, $18, $1e
+	db $01, $07, $0d, $13, $19, $1f
+	db $02, $08, $0e, $14, $1a, $20
+	db $03, $09, $0f, $15, $1b, $21
+	db $04, $0a, $10, $16, $1c, $22
+	db $05, $0b, $11, $17, $1d, $23
+
+.FourByFour:
+	db $00, $0c, $12, $1e
+	db $02, $0e, $14, $20
+	db $03, $0f, $15, $21
+	db $05, $11, $17, $23
+
+.TwoByTwo:
+	db $00, $1e
+	db $05, $23
+
+.SevenBySeven:
+	db $00, $07, $0e, $15, $1c, $23, $2a
+	db $01, $08, $0f, $16, $1d, $24, $2b
+	db $02, $09, $10, $17, $1e, $25, $2c
+	db $03, $0a, $11, $18, $1f, $26, $2d
+	db $04, $0b, $12, $19, $20, $27, $2e
+	db $05, $0c, $13, $1a, $21, $28, $2f
+	db $06, $0d, $14, $1b, $22, $29, $30
+
+.FiveByFive:
+	db $00, $07, $15, $23, $2a
+	db $01, $08, $16, $24, $2b
+	db $03, $0a, $18, $26, $2d
+	db $05, $0c, $1a, $28, $2f
+	db $06, $0d, $1b, $29, $30
+
+.ThreeByThree:
+	db $00, $15, $2a
+	db $03, $18, $2d
+	db $06, $1b, $30
+; c8545
+
+BattleBGEffect_Surf: ; c8545 (32:4545)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	lb de, 4, 1
+	call InitSurfWaves
+
+.one
+	ldh a, [hLCDCPointer]
+	and a
+	ret z
+	push bc
+	call .RotatewSurfWaveBGEffect
+	pop bc
+	ret
+
+.RotatewSurfWaveBGEffect:
+	ld hl, wLYOverrides
+	ld de, wLYOverrides2 + 1
+.asm_c853e:
+	ld bc, wLYOverrides2
+	ld a, [bc]
+	push af
+	ld a, $7f
+.asm_c8545:
+	push af
+	ld a, [de]
+.asm_c8547:
+	ld [bc], a
+	ldh a, [hLYOverrideStart]
+	cp l
+	jr nc, .asm_c8555
+	ldh a, [hLYOverrideEnd]
+	cp l
+	jr c, .asm_c8555
+	ld a, [de]
+	jr .asm_c8556
+
+.asm_c8555:
+	xor a
+.asm_c8556:
+	ld [hli], a
+	inc de
+	inc bc
+	pop af
+	dec a
+	jr nz, .asm_c8545
+	pop af
+	ld [bc], a
+	ret
+
+BattleBGEffect_Psychic: ; c8607 (32:4607)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	ldh [hLCDCPointer], a
+	xor a
+	ldh [hLYOverrideStart], a
+	ld a, $5f
+	ldh [hLYOverrideEnd], a
+	lb de, 6, 5
+	call Functionc8f2e
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	inc [hl]
+	and $3
+	ret nz
+	call BattleBGEffect_WavyScreenFX
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_Teleport: ; c863f (32:463f)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	lb de, 6, 5
+	call Functionc8f2e
+	ret
+
+.one
+	call BattleBGEffect_WavyScreenFX
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_NightShade: ; c8662 (32:4662)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCY)
+	call BattleBGEffect_SetLCDStatCustoms
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld e, [hl]
+	ld d, 3
+	call Functionc8f2e
+	ret
+
+.one
+	call BattleBGEffect_WavyScreenFX
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_DoubleTeam: ; c8689 (32:4689)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+	dw .three
+	dw .four
+	dw .five
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], $0
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	cp $10
+	jr nc, .next
+	inc [hl]
+	call .UpdateLYOverrides
+	ret
+
+.three
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	cp $ff
+	jr z, .next
+	dec [hl]
+	call .UpdateLYOverrides
+	ret
+
+.next
+	call BattleBGEffects_IncrementJumptable
+	ret
+
+.two
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	ld d, $2
+	call BattleBGEffects_Sine
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	add [hl]
+	call .UpdateLYOverrides
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	add $4
+	ld [hl], a
+
+.four
+	ret
+
+.UpdateLYOverrides:
+	ld e, a
+	xor $ff
+	inc a
+	ld d, a
+	ld h, HIGH(wLYOverrides)
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ldh a, [hLYOverrideEnd]
+	sub l
+	srl a
+.loop
+	ld [hl], e
+	inc hl
+	ld [hl], d
+	inc hl
+	dec a
+	jr nz, .loop
+	ld [hl], e
+	ret
+
+.five
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_AcidArmor: ; c8709 (32:4709)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCY)
+	call BattleBGEffect_SetLCDStatCustoms
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld e, [hl]
+	ld d, 3
+	call Functionc8f2e
+	ret
+
+.one
+	ldh a, [hLYOverrideEnd]
+	ld l, a
+	ld h, HIGH(wLYOverrides)
+	ld e, l
+	ld d, h
+	dec de
+.loop
+	ld a, [de]
+	dec de
+	ld [hld], a
+	ldh a, [hLYOverrideStart]
+	cp l
+	jr nz, .loop
+	ld [hl], $90
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_Withdraw: ; c8761 (32:4761)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCY)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], $1
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and $3f
+	ld d, a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	cp d
+	ret nc
+	call BGEffect_DisplaceLYOverridesBackup
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	rlca
+	rlca
+	and $3
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	add [hl]
+	ld [hl], a
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_Dig: ; c87a7 (32:47a7)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+	dw .three
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCY)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], $2
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .next
+	dec [hl]
+	ret
+
+.next
+	ld [hl], $10
+	call BattleBGEffects_IncrementJumptable
+.two
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ldh a, [hLYOverrideEnd]
+	sub l
+	dec a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	cp [hl]
+	ret c
+	ld a, [hl]
+	push af
+	and $7
+	jr nz, .skip
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	dec [hl]
+.skip
+	pop af
+	call BGEffect_DisplaceLYOverridesBackup
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	inc [hl]
+	inc [hl]
+	ret
+
+.three
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_Tackle: ; c8805 (32:4805)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw Tackle_BGEffect25_2d_one
+	dw Tackle_BGEffect25_2d_two
+	dw .three
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_side
+	ld a, 2
+	jr .okay
+
+.player_side
+	ld a, -2
+.okay
+	ld [hl], a
+	ret
+
+.three
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+Tackle_BGEffect25_2d_one:
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	cp -8
+	jr z, .reached_limit
+	cp  8
+	jr nz, .finish
+.reached_limit
+	call BattleBGEffects_IncrementJumptable
+.finish
+	call Functionc88a5
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	add [hl]
+	ld [hl], a
+	ret
+
+Tackle_BGEffect25_2d_two:
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .asm_c8893
+	call BattleBGEffects_IncrementJumptable
+.asm_c8893
+	call Functionc88a5
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	xor $ff
+	inc a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	add [hl]
+	ld [hl], a
+	ret
+
+Functionc88a5: ; c88a5 (32:48a5)
+	push af
+.asm_c87ab:
+	ld a, [rLY]
+	cp $60
+	jr c, .asm_c87ab
+	pop af
+	call BGEffect_FillLYOverridesBackup
+	ret
+
+BattleBGEffect_2d: ; c88e7 (32:48e7)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw BGEffect2d_2f_zero
+	dw Tackle_BGEffect25_2d_one
+	dw Tackle_BGEffect25_2d_two
+	dw .three
+
+
+.three
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BGEffect2d_2f_zero:
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	ld a, -2
+	jr .okay
+
+.player_turn
+	ld a, 2
+.okay
+	ld [hl], a
+	ret
+
+BattleBGEffect_2f: ; c8919 (32:4919)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw BGEffect2d_2f_zero
+	dw Tackle_BGEffect25_2d_one
+	dw .two
+	dw Tackle_BGEffect25_2d_two
+	dw .four
+
+.four
+	call BattleAnim_ResetLCDStatCustom
+.two
+	ret
+
+BattleBGEffect_26: ; c892a (32:492a)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	ld d, $8
+	call BattleBGEffects_Sine
+	call .Functionc8836
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	add $4
+	ld [hl], a
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+.Functionc8836:
+	push af
+.loop
+	ld a, [rLY]
+	cp $60
+	jr c, .loop
+	pop af
+	call BGEffect_FillLYOverridesBackup
+	ret
+
+BattleBGEffect_2c: ; c8964 (32:4964)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	xor a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hli], a
+	ld [hl], a
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	ld d, $6
+	call BattleBGEffects_Sine
+	push af
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	ld d, $2
+	call BattleBGEffects_Sine
+	ld e, a
+	pop af
+	add e
+	call .Functionc8894
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	add $8
+	ld [hl], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	add $2
+	ld [hl], a
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+.Functionc8894:
+	push af
+.asm_c8895:
+	ld a, [rLY]
+	cp $60
+	jr c, .asm_c8895
+	pop af
+	call BGEffect_FillLYOverridesBackup
+	ret
+
+BattleBGEffect_28: ; c89b5 (32:49b5)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	cp $20
+	ret nc
+	inc [hl]
+	ld d, a
+	ld e, 4
+	call Functionc8f2e
+	ret
+
+.two
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .reset
+	dec [hl]
+	ld d, a
+	ld e, 4
+	call Functionc8f2e
+	ret
+
+.reset
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_BounceDown: ; c89ee (32:49ee)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCY)
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], $1
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $20
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	cp $38
+	ret nc
+	push af
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	ld d, $10
+	call BattleBGEffects_Cosine
+	add $10
+	ld d, a
+	pop af
+	add d
+	call BGEffect_DisplaceLYOverridesBackup
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	inc [hl]
+	inc [hl]
+	ret
+
+.two
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_2a: ; c8a3a (32:4a3a)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+	dw .three
+	dw .four
+	dw .five
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	ld a, $e4
+	call BattleBGEffects_SetLYOverrides
+	ld a, $47
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ld h, HIGH(wLYOverrides)
+.loop
+	ldh a, [hLYOverrideEnd]
+	cp l
+	jr z, .done
+	xor a
+	ld [hli], a
+	jr .loop
+
+.done
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+.one
+.four
+	ret
+
+.two
+	call .GetLYOverride
+	jr nc, .next
+	call .SetLYOverridesBackup
+	ret
+
+.next
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+	ldh a, [hLYOverrideStart]
+	inc a
+	ldh [hLYOverrideStart], a
+	call BattleBGEffects_IncrementJumptable
+	ret
+
+.three
+	call .GetLYOverride
+	jr nc, .finish
+	call .SetLYOverridesBackup
+	ldh a, [hLYOverrideEnd]
+	dec a
+	ld l, a
+	ld [hl], e
+	ret
+
+.finish
+	call BattleBGEffects_IncrementJumptable
+	ret
+
+.SetLYOverridesBackup:
+	ld e, a
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ldh a, [hLYOverrideEnd]
+	sub l
+	srl a
+	ld h, HIGH(wLYOverrides)
+.loop2
+	ld [hl], e
+	inc hl
+	inc hl
+	dec a
+	jr nz, .loop2
+	ret
+
+.five
+	call BattleBGEffects_ResetVideoHRAM
+	ret
+
+.GetLYOverride:
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	inc [hl]
+	srl a
+	srl a
+	srl a
+	ld e, a
+	ld d, 0
+	ld hl, .data
+	add hl, de
+	ld a, [hl]
+	cp $ff
+	ret
+
+.data
+	db $00, $40, $90, $e4
+	db -1
+; c8acc
+
+BattleBGEffect_2b: ; c8acc (32:4acc)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	call BattleBGEffects_ClearLYOverrides
+	ld a, LOW(rSCX)
+	call BattleBGEffect_SetLCDStatCustoms
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], $40
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .done
+	dec [hl]
+	srl a
+	srl a
+	srl a
+	and $f
+	ld d, a
+	ld e, a
+	call Functionc8f2e
+	ret
+
+.done
+	call BattleAnim_ResetLCDStatCustom
+	ret
+
+BattleBGEffect_1c: ; c8b00 (32:4b00)
+	call BattleBGEffects_AnonJumptable
+	jp hl
+.anon_dw
+	dw .zero
+	dw .one
+	dw .two
+
+
+.zero
+	call BattleBGEffects_IncrementJumptable
+	ld a, $e4
+	call BattleBGEffects_SetLYOverrides
+	ld a, LOW(rBGP)
+	ldh [hLCDCPointer], a
+	xor a
+	ldh [hLYOverrideStart], a
+	ld a, $60
+	ldh [hLYOverrideEnd], a
+	ret
+
+.one
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	inc [hl]
+	and $18
+	srl a
+	srl a
+	ld e, a
+	ld d, $0
+	push bc
+	call BGEffect_CheckBattleTurn
+	jr nz, .player
+	ld hl, .CGB_DMGEnemyData
+	add hl, de
+	ld a, [hli]
+	ld [wOBP1], a
+	ld d, a
+	ld e, [hl]
+	lb bc, $2f, $30
+	jr .okay
+
+.player
+	ld hl, .DMG_PlayerData
+	add hl, de
+	ld d, [hl]
+	inc hl
+	ld a, [hl]
+	ld [wOBP1], a
+	ld e, a
+	lb bc, $37, $28
+.okay
+	call .DMG_LYOverrideLoads
+	pop bc
+	ret
+
+.two
+	call BattleBGEffects_ResetVideoHRAM
+	ld a, $e4
+	ld [wBGP], a
+	ld [wOBP1], a
+	ret
+
+.DMG_LYOverrideLoads:
+	ld hl, wLYOverrides
+.loop1
+	ld [hl], d
+	inc hl
+	dec b
+	jr nz, .loop1
+.loop2
+	ld [hl], e
+	inc hl
+	dec c
+	jr nz, .loop2
+	ret
+
+.CGB_DMGEnemyData:
+	db $e4, $e4
+	db $f8, $90
+	db $fc, $40
+	db $f8, $90
+.DMG_PlayerData:
+	db $e4, $e4
+	db $90, $f8
+	db $40, $fc
+	db $90, $f8
+; c8be8
+
+BattleBGEffect_RapidFlash: ; c8be8 (32:4be8)
+	ld de, .FlashPals
+	call BGEffect_RapidCyclePals
+	ret
+
+.FlashPals:
+	db $e4, $6c, $fe
+; c8bf2
+
+BattleBGEffect_16: ; c8bf2 (32:4bf2)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $90, $40, $ff
+; c8bfd
+
+BattleBGEffect_17: ; c8bfd (32:4bfd)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $f8, $fc, $ff
+; c8c08
+
+BattleBGEffect_18: ; c8c08 (32:4c08)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $90, $40, $90, $fe
+; c8c14
+
+BattleBGEffect_19: ; c8c14 (32:4c14)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $f8, $fc, $f8, $fe
+; c8c20
+
+BattleBGEffect_1a: ; c8c20 (32:4c20)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $f8, $fc, $f8, $e4, $90, $40, $90, $fe
+; c8c30
+
+BattleBGEffect_1b: ; c8c30 (32:4c30)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $fc, $e4, $00, $fe
+; c8c3c
+
+BattleBGEffect_1d: ; c8c3c (32:4c3c)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $e4, $90, $40, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $40, $90, $e4, $ff
+; c8c55
+
+BattleBGEffect_1e: ; c8c55 (32:4c55)
+	ld de, .Pals
+	call BGEffect_RapidCyclePals
+	ret
+
+.Pals:
+	db $00, $40, $90, $e4, $ff
+; c8c61
+
+BattleBGEffect_2e: ; c8ce1 (32:4ce1)
+	call Functionc8d0b
+	jr c, .xor_a
+	bit 7, a
+	jr z, .okay
+.xor_a
+	xor a
+.okay
+	ldh [hSCY], a
+	xor $ff
+	inc a
+	ld [$c753], a ; wAnimObject01YOffset
+	ret
+
+BattleBGEffect_1f: ; c8cf9 (32:4cf9)
+	call Functionc8d0b
+	jr nc, .skip
+	xor a
+.skip
+	ldh [hSCX], a
+	ret
+
+BattleBGEffect_20: ; c8d02 (32:4d02)
+	call Functionc8d0b
+	jr nc, .skip
+	xor a
+.skip
+	ldh [hSCY], a
+	ret
+
+Functionc8d0b: ; c8d0b (32:4d0b)
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr nz, .okay
+	call EndBattleBGEffect
+	scf
+	ret
+
+.okay
+	dec [hl]
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	and $f
+	jr z, .every_16_frames
+	dec [hl]
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	and a
+	ret
+
+.every_16_frames
+	ld a, [hl]
+	swap a
+	or [hl]
+	ld [hl], a
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	xor $ff
+	inc a
+	ld [hl], a
+	and a
+	ret
+
+BattleBGEffect_GetNthDMGPal: ; c8d57 (32:4d57)
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld a, [hl]
+	and a
+	jr z, .zero
+	dec [hl]
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	call BattleBGEffect_GetNextDMGPal
+	ret
+
+.zero
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	ld hl, BG_EFFECT_STRUCT_JT_INDEX
+	add hl, bc
+	ld [hl], a
+	call BattleBGEffect_GetFirstDMGPal
+	ret
+
+BGEffect_RapidCyclePals: ; c8d77 (32:4d77)
+	push de
+	ld de, .Jumptable_DMG
+	call BatttleBGEffects_GetNamedJumptablePointer
+	pop de
+	jp hl
+
+.Jumptable_DMG:
+	dw .zero_dmg
+	dw .one_dmg
+	dw .two_dmg
+
+
+.zero_dmg ; c8d8b (32:4d8b)
+	call BattleBGEffects_IncrementJumptable
+	ld a, $e4
+	call BattleBGEffects_SetLYOverrides
+	ld a, $47
+	call BattleBGEffect_SetLCDStatCustoms
+	ldh a, [hLYOverrideEnd]
+	inc a
+	ldh [hLYOverrideEnd], a
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	ld [hl], $0
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld [hl], a
+	ret
+
+.one_dmg ; c8daa (32:4daa)
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ld a, [hl]
+	and $f
+	jr z, .okay_1_dmg
+	dec [hl]
+	ret
+
+.okay_1_dmg
+	ld a, [hl]
+	swap a
+	or [hl]
+	ld [hl], a
+	call BattleBGEffect_GetFirstDMGPal
+	jr c, .okay_2_dmg
+	call BGEffect_FillLYOverridesBackup
+	ret
+
+.okay_2_dmg
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	dec [hl]
+	ret
+
+.two_dmg ; c8dc9 (32:4dc9)
+	call BattleBGEffects_ResetVideoHRAM
+	ld a, %11100100
+	ld [rBGP], a
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffect_GetFirstDMGPal: ; c8eac (32:4eac)
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld a, [hl]
+	inc [hl]
+BattleBGEffect_GetNextDMGPal: ; c8eb2 (32:4eb2)
+	ld l, a
+	ld h, $0
+	add hl, de
+	ld a, [hl]
+	cp -1
+	jr z, .quit
+	cp -2
+	jr nz, .repeat
+	ld a, [de]
+	ld hl, BG_EFFECT_STRUCT_03
+	add hl, bc
+	ld [hl], $0
+.repeat
+	and a
+	ret
+
+.quit
+	scf
+	ret
+
+BattleBGEffects_ClearLYOverrides: ; c8eca (32:4eca)
+	xor a
+BattleBGEffects_SetLYOverrides: ; c8ecb (32:4ecb)
+	ld hl, wLYOverrides
+	ld e, $91
+.loop
+	ld [hli], a
+	dec e
+	jr nz, .loop
+	ret
+
+BattleBGEffect_SetLCDStatCustoms: ; c8ede (32:4ede)
+	ldh [hLCDCPointer], a
+	call BGEffect_CheckBattleTurn
+	jr nz, .player_turn
+	lb de, $00, $36
+	jr .okay
+
+.player_turn
+	lb de, $2f, $5e
+.okay
+	ld a, d
+	ldh [hLYOverrideStart], a
+	ld a, e
+	ldh [hLYOverrideEnd], a
+	ret
+
+BattleAnim_ResetLCDStatCustom: ; c8f0a (32:4f0a)
+	xor a
+	ldh [hLYOverrideStart], a
+	ldh [hLYOverrideEnd], a
+	call BattleBGEffects_ClearLYOverrides
+	xor a
+	ldh [hLCDCPointer], a
+	call EndBattleBGEffect
+	ret
+
+BattleBGEffects_ResetVideoHRAM: ; c8f19 (32:4f19)
+	xor a
+	ldh [hLCDCPointer], a
+	ldh [hLYOverrideStart], a
+	ldh [hLYOverrideEnd], a
+	call BattleBGEffects_ClearLYOverrides
+	ret
+
+Functionc8f2e: ; c8f2e (32:4f2e)
+	push bc
+	xor a
+	ld [wBattleAnimTemp0], a
+	ld a, e
+	ld [wBattleAnimTemp1], a
+	ld a, d
+	ld [wBattleAnimTemp2], a
+	ld a, $80
+	ld [wBattleAnimTemp3], a
+	ld bc, wLYOverrides
+.loop
+	ldh a, [hLYOverrideStart]
+	cp c
+	jr nc, .next
+	ldh a, [hLYOverrideEnd]
+	cp c
+	jr c, .next
+	ld a, [wBattleAnimTemp2]
+	ld d, a
+	ld a, [wBattleAnimTemp0]
+	call BattleBGEffects_Sine
+	ld [bc], a
+.next
+	inc bc
+	ld a, [wBattleAnimTemp1]
+	ld hl, wBattleAnimTemp0
+	add [hl]
+	ld [hl], a
+	ld hl, wBattleAnimTemp3
+	dec [hl]
+	jr nz, .loop
+	pop bc
+	ret
+
+InitSurfWaves: ; c8f69 (32:4f69)
+	push bc
+	xor a
+	ld [wBattleAnimTemp0], a
+	ld a, e
+	ld [wBattleAnimTemp1], a
+	ld a, d
+	ld [wBattleAnimTemp2], a
+	ld a, $80
+	ld [wBattleAnimTemp3], a
+	ld bc, wLYOverrides2
+.loop
+	ld a, [wBattleAnimTemp2]
+	ld d, a
+	ld a, [wBattleAnimTemp0]
+	call BattleBGEffects_Sine
+	ld [bc], a
+	inc bc
+	ld a, [wBattleAnimTemp1]
+	ld hl, wBattleAnimTemp0
+	add [hl]
+	ld [hl], a
+	ld hl, wBattleAnimTemp3
+	dec [hl]
+	jr nz, .loop
+	pop bc
+	ret
+
+BattleBGEffect_WavyScreenFX: ; c8fef (32:4fef)
+	push bc
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	inc a
+	ld e, a
+	ld h, HIGH(wLYOverrides)
+	ld d, h
+	ldh a, [hLYOverrideEnd]
+	sub l
+	and a
+	jr z, .done
+	ld c, a
+	ld a, [hl]
+	push af
+.loop
+	ld a, [de]
+	inc de
+	ld [hli], a
+	dec c
+	jr nz, .loop
+	pop af
+	ld [hl], a
+.done
+	pop bc
+	ret
+
+BGEffect_FillLYOverridesBackup: ; c900b (32:500b)
+	push af
+	ld h, HIGH(wLYOverrides)
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ldh a, [hLYOverrideEnd]
+	sub l
+	ld d, a
+	pop af
+.loop
+	ld [hli], a
+	dec d
+	jr nz, .loop
+	ret
+
+BGEffect_DisplaceLYOverridesBackup: ; c901b (32:501b)
+	; e = a; d = [hLYOverrideEnd] - [hLYOverrideStart] - a
+	push af
+	ld e, a
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ldh a, [hLYOverrideEnd]
+	sub l
+	sub e
+	ld d, a
+	ld h, HIGH(wLYOverrides)
+	ldh a, [hLYOverrideStart]
+	ld l, a
+	ld a, $90
+.loop
+	ld [hli], a
+	dec e
+	jr nz, .loop
+	pop af
+	xor $ff
+	inc a
+.loop2
+	ld [hli], a
+	dec d
+	jr nz, .loop2
+	ret
+
+BGEffect_CheckBattleTurn: ; c9038 (32:5038)
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ldh a, [hBattleTurn]
+	and $1
+	xor [hl]
+	ret
+
+BGEffect_CheckFlyDigStatus: ; c9042 (32:5042)
+	ld hl, BG_EFFECT_STRUCT_BATTLE_TURN
+	add hl, bc
+	ldh a, [hBattleTurn]
+	and $1
+	xor [hl]
+	jr nz, .player
+	ld a, [wEnemySubStatus3] ; EnemySubStatus3
+	bit 6, a
+	ret
+
+.player
+	ld a, [wPlayerSubStatus3] ; PlayerSubStatus3
+	bit 6, a
+	ret
+
+BattleBGEffects_CheckSGB: ; c9059 (32:5059)
+	ld a, [wcccf]
+	and a
+	ret
+
+BattleBGEffects_Sine: ; c905d (32:505d)
+	ld e, a
+	callfar BattleAnim_Sine_e
+	ld a, e
+	ret
+
+BattleBGEffects_Cosine: ; c9066 (32:5066)
+	ld e, a
+	callfar BattleAnim_Cosine_e
+	ld a, e
+	ret
+
+; c906f (32:506f)
diff --git a/hram.asm b/hram.asm
index 9e3e438..8e59150 100644
--- a/hram.asm
+++ b/hram.asm
@@ -101,8 +101,9 @@ hPrintNumTemp:: ds 3 ; ffba big-endian
 hLCDCPointer:: ; ffd0
     db
 
-
-    ds 3 ; TODO
+hLYOverrideStart:: db ; ffd1
+hLYOverrideEnd:: db ; ffd2
+    ds 1 ; TODO
 
 
 hSerialReceived:: ; ffd4
@@ -188,4 +189,6 @@ hRandomAdd:: db ; ffef
 hRandomSub:: db ; fff0
 hRTCRandom:: db ; fff1
 
+hBattleTurn:: db ; fff2
+
     ; TODO
diff --git a/shim.sym b/shim.sym
index 6460009..92bda27 100644
--- a/shim.sym
+++ b/shim.sym
@@ -4,6 +4,7 @@
 00:051C Reset
 00:0D0A LoadFont
 00:0D1A LoadFontExtra
+00:0E18 ClearBox
 00:0E2A ClearTileMap
 00:0E3D DrawTextBox
 00:0E93 PlaceString
@@ -179,13 +180,15 @@
 
 24:4000 SetClockDialog
 24:4239 SlotMachineGame
-32:4000 Function_c8000
 32:76FF Function_cb6ff
 32:7710 Function_cb710
 32:7733 Function_cb733
 33:4000 Function_cc000
 33:4000 Function_cc000_2
 33:4001 Function_cc001
+33:467B QueueBattleAnimation
+33:625D BattleAnim_Sine_e
+33:6263 BattleAnim_Cosine_e
 3A:441D Function_e841d
 3A:45D8 Function_e85d8
 3A:47F9 Function_e87f9
diff --git a/wram.asm b/wram.asm
index 861fd97..06e8e37 100644
--- a/wram.asm
+++ b/wram.asm
@@ -120,12 +120,67 @@ NEXTU
 
 wLYOverrides:: ; c600
     ds SCREEN_HEIGHT_PX
+; c690
+    ds $10
+wLYOverrides2:: ; c6a0
 
 NEXTU
+; Battle-related
+
+	ds $1ea
+
+; c7ea
+wActiveBGEffects:: ; c7ea
+wBGEffect1:: battle_bg_effect wBGEffect1
+wBGEffect2:: battle_bg_effect wBGEffect2
+wBGEffect3:: battle_bg_effect wBGEffect3
+wBGEffect4:: battle_bg_effect wBGEffect4
+wBGEffect5:: battle_bg_effect wBGEffect5
+wActiveBGEffectsEnd::
+
+wNumActiveBattleAnims:: db ; c7fe
+
+wBattleAnimFlags:: db ; c7ff
+wBattleAnimAddress:: dw ; c800
+wBattleAnimDuration:: db ; c802
+wBattleAnimParent:: dw ; c803
+wBattleAnimLoops:: db ; c805
+wBattleAnimVar:: db ; c806
+wBattleAnimByte:: db ; c807
+wBattleAnimOAMPointerLo:: db ; c808
+	db
 
-	ds $422 ; TODO
-
-wTrainerClass:: ; ca22
+UNION ; c80a
+; unidentified
+wBattleAnimTemp0:: db
+wBattleAnimTemp1:: db
+wBattleAnimTemp2:: db
+wBattleAnimTemp3:: db
+
+NEXTU ; c80a
+wBattleAnimTempOAMFlags:: db
+wBattleAnimTempField02:: db
+wBattleAnimTempTileID:: db
+wBattleAnimTempXCoord:: db
+wBattleAnimTempYCoord:: db
+wBattleAnimTempXOffset:: db
+wBattleAnimTempYOffset:: db
+wBattleAnimTempAddSubFlags:: db
+wBattleAnimTempPalette:: db
+ENDU ; c813
+
+        ds $32
+wBattleAnimEnd::
+; c845
+
+	ds $1f8 ; TODO
+
+wPlayerSubStatus3:: db ; ca3d
+	ds $4
+wEnemySubStatus3:: db ; ca42
+; ca43
+	ds $14
+wTrainerClass:: ; ca57
 	db
 
 ENDU
@@ -249,6 +304,7 @@ wOBP1:: db ; cccc
 SECTION "CCCE", WRAM0[$CCCE]
 
 wDisableVBlankWYUpdate:: db ; ccce
+wcccf:: db
 
 SECTION "CD26", WRAM0[$CD26]