extends KinematicBody2D

var velocity: Vector2 = Vector2.ZERO
var speed = 400

var in_attack_range = false

var path : Array = []
var nav: Navigation2D = null
var target_loc = null
var threshold = 1

func _ready():
	yield(get_tree(), "idle_frame")
	var tree = get_tree()
	if tree.has_group("LevelNavigation"):
		nav = tree.get_nodes_in_group("LevelNavigation")[0]

var timer = 0

func _physics_process(delta):

	if in_attack_range and !path.empty():
			_navigate()

	if Input.is_action_just_pressed("LMB"):
		target_loc = get_global_mouse_position()
		_attack_range_transition()
		_generate_path()

func _generate_path():
	if nav != null and target_loc != null:
		path = nav.get_simple_path(global_position, target_loc, false)
		print(path)

func _navigate():
	var direction = global_position.direction_to(path[0])
	velocity = direction * speed
	velocity = move_and_slide(velocity)
	if global_position.distance_to(path[0]) < threshold:
		path.pop_front()

func _attack_range_transition():
	if in_attack_range == false:
		in_attack_range = true
		print("on")
	else:
		in_attack_range = false
		print("off")