katana card inject scene

growth/CardInjects/Katana/katana_card_inject.gd

@@ -0,0 +1,28 @@
+extends Node
+
+@export var KatanaSlash: PackedScene
+@export var max_range = 50
+@export var min_range = 50
+@export var max_ammo = 20
+var ammo = max_ammo
+
+func activate(world, activator):
+	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)
+	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)
+	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)
+	else:
+		assert(false, "who are you, activator?")
+	world.add_child(katana)
+	
+
+func discard(world, activator):
+	pass