Move-unique effect commands consistently go in engine/battle/move_effects/

engine/battle/move_effects/pursuit.asm

@@ -0,0 +1,26 @@
+BattleCommand_Pursuit: ; 37b1d
+; pursuit
+; Double damage if the opponent is switching.
+
+	ld hl, wEnemyIsSwitching
+	ld a, [hBattleTurn]
+	and a
+	jr z, .ok
+	ld hl, wPlayerIsSwitching
+.ok
+	ld a, [hl]
+	and a
+	ret z
+
+	ld hl, CurDamage + 1
+	sla [hl]
+	dec hl
+	rl [hl]
+	ret nc
+
+	ld a, $ff
+	ld [hli], a
+	ld [hl], a
+	ret
+
+; 37b39