using UnityEngine;
using System.Collections;

public class AiPatrol : AiBehavior {

    public AiWaypoint[] patrolPoints;
    private int _targetPoint;
    private GameObject targetObject;
    private HumanController controller;

    protected override void OnBegin(AiBlackboard blackboard) {
        base.OnBegin(blackboard);
        //_targetPoint = 0;
        blackboard.GetValue("gameobject", out targetObject);
        controller = targetObject.GetComponent<HumanController>();
    }

    private void NextPoint() {
        _targetPoint = (_targetPoint + 1)%patrolPoints.Length;
    }

    protected override BehaviorStatus OnExecute(AiBlackboard blackboard) {
        var point = patrolPoints[_targetPoint];
        var dir = (Vector2) point.transform.position - (Vector2) controller.transform.position;

        if (controller.GetComponent<Health>().Dead) {
            return BehaviorStatus.Success;
        }

        if (Mathf.Abs(dir.x) < 0.1f) {
            NextPoint();
        } else {
            controller.UpdateMovement(Mathf.Sign(dir.x) * controller.maxWalkSpeed);
        }
        return BehaviorStatus.Running;
    }
}