extends Sprite

var speed : = 400.0
var path : = PoolVector2Array() setget set_path


func _ready() -> void:
	set_process(false)


func _process(delta: float) -> void:
	var move_distance : = speed * delta
	move_along_path(move_distance)


func move_along_path(distance : float) -> void:
	var last_point : = position
	for index in range(path.size()):
		var distance_to_next = last_point.distance_to(path[0])
		
		if distance <= distance_to_next:
			position = last_point.linear_interpolate(path[0], distance / distance_to_next)
			break
			
		if path.size() == 1:
			position = path[0]
			set_process(false)
			break

		distance -= distance_to_next
		last_point = path[0]
		path.remove(0)
		pass


func set_path(value : PoolVector2Array) -> void:
	if value.size() == 0:
		return
	path = value
	path.remove(0)
	set_process(true)