depleted ammo destruction

scripts/weapon_system/weapon_substate_machine.gd

@@ -7,17 +7,32 @@ class_name WeaponSubStateMachine
 @export var visibility_target: StringName
 
 @export var max_ammo: int
-@onready var ammo: int = max_ammo
-@onready var remaining_ammo: int = max_ammo * 3
+@onready var ammo: int = max_ammo:
+	set(value):
+		if value < 0:
+			ammo = 0
+		else:
+			ammo = value
+		if ammo <= 0 and remaining_ammo <= 0:
+			ammo_depleted.emit()
+	get:
+		return ammo
+@export var ammo_mags: int = 3
+@onready var remaining_ammo: int = max_ammo * ammo_mags:
+	set(value):
+		if value < 0:
+			remaining_ammo = 0
+		else:
+			remaining_ammo = value
 
 @export var speed_modifier: float = 1.0
-
 @export var can_be_previous: bool = true
 @export var destroy_when_empty: bool = false
 
 @export var slot: StringName
 
 signal request_return
+signal ammo_depleted
 
 var system: WeaponSystem
 var animation_player: AnimationPlayer