using Godot;
using System;

public partial class PatrolState : State
{
	[Export] public float Speed = 40f;
	[Export] public float visibilityRange = 50f;

	[Export] public Node2D[] waypoints; // Waypoints som der patruljeres imellem.
	[Export] public CharacterBody2D player;

	public int currentWaypointIndex = 0; // Det nuværende waypoint
	public Vector2 targetPosition;

	public override void Ready()
	{
		targetPosition = waypoints[currentWaypointIndex].GlobalPosition;
		GD.Print("PatrolState ready.");
	}

	public override void Update(float delta)
	{
		fsm.npc.Velocity = fsm.npc.GlobalPosition.DirectionTo(targetPosition) * Speed;

		// Er vi nået til vores nuværende Waypoint?
		if( fsm.npc.GlobalPosition.DistanceTo( targetPosition ) < 1.5f ){
			currentWaypointIndex++;

			if (currentWaypointIndex > waypoints.Length - 1) {
				currentWaypointIndex = 0;
			}
			targetPosition = waypoints[currentWaypointIndex].GlobalPosition;
		}

		// Er vi inde for visibility range af Player?
		if (fsm.npc.GlobalPosition.DistanceTo(player.GlobalPosition) < this.visibilityRange) {
			GD.Print("Skift til ChaseState");
			fsm.TransitionTo("ChaseState");
		}

		fsm.npc.MoveAndSlide();
	}
}