1 files changed, 219 insertions, 0 deletions
diff --git a/engine/battle/move_effects/beat_up.asm b/engine/battle/move_effects/beat_up.asm
new file mode 100644
index 000000000..31b07726e
--- /dev/null
+++ b/engine/battle/move_effects/beat_up.asm
@@ -0,0 +1,219 @@
+BattleCommand_BeatUp: ; 35461
+; beatup
+
+	call ResetDamage
+	ld a, [hBattleTurn]
+	and a
+	jp nz, .enemy_beats_up
+	ld a, [PlayerSubStatus3]
+	bit SUBSTATUS_IN_LOOP, a
+	jr nz, .next_mon
+	ld c, 20
+	call DelayFrames
+	xor a
+	ld [PlayerRolloutCount], a
+	ld [wd002], a
+	ld [wBeatUpHitAtLeastOnce], a
+	jr .got_mon
+
+.next_mon
+	ld a, [PlayerRolloutCount]
+	ld b, a
+	ld a, [PartyCount]
+	sub b
+	ld [wd002], a
+
+.got_mon
+	ld a, [wd002]
+	ld hl, PartyMonNicknames
+	call GetNick
+	ld a, MON_HP
+	call GetBeatupMonLocation
+	ld a, [hli]
+	or [hl]
+	jp z, .beatup_fail ; fainted
+	ld a, [wd002]
+	ld c, a
+	ld a, [CurBattleMon]
+	; BUG: this can desynchronize link battles
+	; Change "cp [hl]" to "cp c" to fix
+	cp [hl]
+	ld hl, BattleMonStatus
+	jr z, .active_mon
+	ld a, MON_STATUS
+	call GetBeatupMonLocation
+.active_mon
+	ld a, [hl]
+	and a
+	jp nz, .beatup_fail
+
+	ld a, $1
+	ld [wBeatUpHitAtLeastOnce], a
+	ld hl, BeatUpAttackText
+	call StdBattleTextBox
+	ld a, [EnemyMonSpecies]
+	ld [CurSpecies], a
+	call GetBaseData
+	ld a, [BaseDefense]
+	ld c, a
+	push bc
+	ld a, MON_SPECIES
+	call GetBeatupMonLocation
+	ld a, [hl]
+	ld [CurSpecies], a
+	call GetBaseData
+	ld a, [BaseAttack]
+	pop bc
+	ld b, a
+	push bc
+	ld a, MON_LEVEL
+	call GetBeatupMonLocation
+	ld a, [hl]
+	ld e, a
+	pop bc
+	ld a, [wPlayerMoveStructPower]
+	ld d, a
+	ret
+
+.enemy_beats_up
+	ld a, [EnemySubStatus3]
+	bit SUBSTATUS_IN_LOOP, a
+	jr nz, .not_first_enemy_beatup
+
+	xor a
+	ld [EnemyRolloutCount], a
+	ld [wd002], a
+	ld [wBeatUpHitAtLeastOnce], a
+	jr .enemy_continue
+
+.not_first_enemy_beatup
+	ld a, [EnemyRolloutCount]
+	ld b, a
+	ld a, [OTPartyCount]
+	sub b
+	ld [wd002], a
+.enemy_continue
+	ld a, [wBattleMode]
+	dec a
+	jr z, .wild
+
+	ld a, [wLinkMode]
+	and a
+	jr nz, .link_or_tower
+
+	ld a, [InBattleTowerBattle]
+	and a
+	jr nz, .link_or_tower
+
+	ld a, [wd002]
+	ld c, a
+	ld b, 0
+	ld hl, OTPartySpecies
+	add hl, bc
+	ld a, [hl]
+	ld [wNamedObjectIndexBuffer], a
+	call GetPokemonName
+	jr .got_enemy_nick
+
+.link_or_tower
+	ld a, [wd002]
+	ld hl, OTPartyMonNicknames
+	ld bc, NAME_LENGTH
+	call AddNTimes
+	ld de, StringBuffer1
+	call CopyBytes
+.got_enemy_nick
+	ld a, MON_HP
+	call GetBeatupMonLocation
+	ld a, [hli]
+	or [hl]
+	jp z, .beatup_fail
+	ld a, [wd002]
+	ld b, a
+	ld a, [CurOTMon]
+	cp b
+	ld hl, EnemyMonStatus
+	jr z, .active_enemy
+
+	ld a, MON_STATUS
+	call GetBeatupMonLocation
+.active_enemy
+	ld a, [hl]
+	and a
+	jr nz, .beatup_fail
+
+	ld a, $1
+	ld [wBeatUpHitAtLeastOnce], a
+	jr .finish_beatup
+
+.wild
+	ld a, [EnemyMonSpecies]
+	ld [wNamedObjectIndexBuffer], a
+	call GetPokemonName
+	ld hl, BeatUpAttackText
+	call StdBattleTextBox
+	jp EnemyAttackDamage
+
+.finish_beatup
+	ld hl, BeatUpAttackText
+	call StdBattleTextBox
+	ld a, [BattleMonSpecies]
+	ld [CurSpecies], a
+	call GetBaseData
+	ld a, [BaseDefense]
+	ld c, a
+	push bc
+	ld a, MON_SPECIES
+	call GetBeatupMonLocation
+	ld a, [hl]
+	ld [CurSpecies], a
+	call GetBaseData
+	ld a, [BaseAttack]
+	pop bc
+	ld b, a
+	push bc
+	ld a, MON_LEVEL
+	call GetBeatupMonLocation
+	ld a, [hl]
+	ld e, a
+	pop bc
+	ld a, [wEnemyMoveStructPower]
+	ld d, a
+	ret
+
+; 355b0
+
+
+.beatup_fail ; 355b0
+	ld b, buildopponentrage_command
+	jp SkipToBattleCommand
+
+; 355b5
+
+
+BattleCommanda8: ; 355b5
+	ld a, [wBeatUpHitAtLeastOnce]
+	and a
+	ret nz
+
+	jp PrintButItFailed
+
+; 355bd
+
+
+GetBeatupMonLocation: ; 355bd
+	push bc
+	ld c, a
+	ld b, 0
+	ld a, [hBattleTurn]
+	and a
+	ld hl, PartyMon1Species
+	jr z, .got_species
+	ld hl, OTPartyMon1Species
+
+.got_species
+	ld a, [wd002]
+	add hl, bc
+	call GetPartyLocation
+	pop bc
+	ret