working hand, timers on (most) cards, katana follows activator

growth/CardInjects/Katana/katana_card_inject.gd

@@ -4,18 +4,45 @@ extends Node
 @export var max_range = 50
 @export var min_range = 50
 @export var max_ammo = 20
+@export var cast_time = 0.2
+@export var cooldown_time = 0.5
+
 var ammo = max_ammo
+var cast_timer: Timer = Timer.new()
+var cooldown_timer: Timer = Timer.new()
+
+func _ready():
+	add_child(cast_timer)
+	cast_timer.wait_time = cast_time
+	cast_timer.one_shot = true
+	add_child(cooldown_timer)
+	cooldown_timer.wait_time = cooldown_time
+	cooldown_timer.one_shot = true
 
 func activate(world, activator):
+	if cooldown_timer.time_left:
+		return
+	
+	var target = activator.get_target_pos()
+	var position = activator.position
+	position = position.direction_to(target) \
+		* clamp(position.distance_to(target), min_range, max_range)
+	
+	cast_timer.timeout.connect(_activate.bind(world, activator, position), CONNECT_ONE_SHOT)
+	cast_timer.start()
+	cooldown_timer.start()
+
+
+func _activate(world, activator, position):
 	var katana = KatanaSlash.instantiate()
 	var target = activator.get_target_pos()
-	katana.position = activator.position
-	katana.position += katana.position.direction_to(target) \
-		* clamp(katana.position.distance_to(target), min_range, max_range)
+	activator.add_child(katana) # KatanaSlash might have to be detached later?
+	katana.position = position
 	katana.look_at(target)
 	if activator.get_collision_layer_value(1): # player object
 		katana.get_node("Area2D").set_collision_layer_value(1, false)
 		katana.get_node("Area2D").set_collision_layer_value(2, true)
+		ammo -= 1
 	elif activator.get_collision_layer_value(2): # enemy object
 		katana.get_node("Area2D").set_collision_layer_value(1, true)
 		katana.get_node("Area2D").set_collision_layer_value(2, false)
@@ -23,6 +50,8 @@ func activate(world, activator):
 		assert(false, "who are you, activator?")
 	world.add_child(katana)
 	
+func discard(world, activator, do_ability):
+	ammo = max_ammo
 
-func discard(world, activator):
-	pass
+func get_ammo():
+	return ammo