1 files changed, 60 insertions, 0 deletions
diff --git a/engine/battle/move_effects/counter.asm b/engine/battle/move_effects/counter.asm
new file mode 100644
index 000000000..b811b293c
--- /dev/null
+++ b/engine/battle/move_effects/counter.asm
@@ -0,0 +1,60 @@
+BattleCommand_Counter: ; 35813
+; counter
+
+	ld a, 1
+	ld [wAttackMissed], a
+	ld a, BATTLE_VARS_LAST_COUNTER_MOVE_OPP
+	call GetBattleVar
+	and a
+	ret z
+
+	ld b, a
+	callfar GetMoveEffect
+	ld a, b
+	cp EFFECT_COUNTER
+	ret z
+
+	call BattleCommand_ResetTypeMatchup
+	ld a, [wTypeMatchup]
+	and a
+	ret z
+
+	call CheckOpponentWentFirst
+	ret z
+
+	ld a, BATTLE_VARS_LAST_COUNTER_MOVE_OPP
+	call GetBattleVar
+	dec a
+	ld de, wStringBuffer1
+	call GetMoveData
+
+	ld a, [wStringBuffer1 + MOVE_POWER]
+	and a
+	ret z
+
+	ld a, [wStringBuffer1 + MOVE_TYPE]
+	cp SPECIAL
+	ret nc
+
+	ld hl, wCurDamage
+	ld a, [hli]
+	or [hl]
+	ret z
+
+	ld a, [hl]
+	add a
+	ld [hld], a
+	ld a, [hl]
+	adc a
+	ld [hl], a
+	jr nc, .capped
+	ld a, $ff
+	ld [hli], a
+	ld [hl], a
+.capped
+
+	xor a
+	ld [wAttackMissed], a
+	ret
+
+; 35864