extends Node

signal direction_changed

@export_node_path("CharacterBody2D") var entityPath: NodePath
@onready var entity: CharacterBody2D = get_node(entityPath)

@export_node_path("AnimatedSprite2D") var spritePath: NodePath
@onready var sprite: AnimatedSprite2D = get_node(spritePath)

@export var SPEED: int

const DIRECTIONS = [Vector2.UP, Vector2.RIGHT, Vector2.DOWN, Vector2.LEFT]
var CURRENT_DIRECTION = Vector2.UP

@onready var MovementTimer: Timer = Timer.new()


func _ready():
	MovementTimer.wait_time = 3.0
	MovementTimer.autostart = true
	MovementTimer.connect("timeout", Callable(_on_movement_timer_timeout))
	add_child(MovementTimer)


func physics_process(delta):
	if CURRENT_DIRECTION == Vector2.UP:
		entity.velocity.y -= SPEED
		sprite.play("up")
	elif CURRENT_DIRECTION == Vector2.DOWN:
		entity.velocity.y += SPEED
		sprite.play("down")
	elif CURRENT_DIRECTION == Vector2.LEFT:
		entity.velocity.x -= SPEED
		sprite.play("left")
	elif CURRENT_DIRECTION == Vector2.RIGHT:
		entity.velocity.x += SPEED
		sprite.play("right")
	
	var collision = entity.move_and_collide(entity.velocity * delta)
	entity.velocity = entity.velocity.lerp(Vector2(0, 0), 1)
	
	return collision


func _on_movement_timer_timeout():
	var directions = DIRECTIONS.duplicate()
	
	directions.remove_at(directions.find(CURRENT_DIRECTION))
	directions.shuffle()
	
	CURRENT_DIRECTION = directions[0]

	emit_signal("direction_changed", CURRENT_DIRECTION)
	
	MovementTimer.start()