extends KinematicBody2D

const SPEED: int = 50

var player: KinematicBody2D = null
var velocity: Vector2 = Vector2.ZERO


func _physics_process(_delta: float) -> void:
    velocity = Vector2.ZERO

    if player and position.distance_to(player.position) > 1:
        velocity = position.direction_to(player.position).normalized() * SPEED

    velocity = move_and_slide(velocity)
    return


func _on_player_detector_body_entered(body: Node) -> void:
    if 'player' in body.get_groups():
        player = body
    return


func _on_player_detector_body_exited(body: Node) -> void:
    if 'player' in body.get_groups():
        player = null
    return