1 files changed, 36 insertions, 0 deletions
diff --git a/engine/battle/moveEffects/one_hit_ko_effect.asm b/engine/battle/moveEffects/one_hit_ko_effect.asm
new file mode 100644
index 00000000..84418e33
--- /dev/null
+++ b/engine/battle/moveEffects/one_hit_ko_effect.asm
@@ -0,0 +1,36 @@
+OneHitKOEffect_: ; 33f57 (c:7f57)
+	ld hl, W_DAMAGE 
+	xor a
+	ld [hli], a
+	ld [hl], a ; set the damage output to zero
+	dec a
+	ld [wCriticalHitOrOHKO], a
+	ld hl, wBattleMonSpeed + 1
+	ld de, wEnemyMonSpeed + 1
+	ld a, [H_WHOSETURN] ; $fff3
+	and a
+	jr z, .asm_33f72
+	ld hl, wEnemyMonSpeed + 1
+	ld de, wBattleMonSpeed + 1
+.asm_33f72
+	ld a, [de]
+	dec de
+	ld b, a
+	ld a, [hld]
+	sub b
+	ld a, [de]
+	ld b, a
+	ld a, [hl]
+	sbc b
+	jr c, .asm_33f8a
+	ld hl, W_DAMAGE 
+	ld a, $ff
+	ld [hli], a
+	ld [hl], a
+	ld a, $2
+	ld [wCriticalHitOrOHKO], a
+	ret
+.asm_33f8a
+	ld a, $1
+	ld [W_MOVEMISSED], a 
+	ret