using UnityEngine;
using System.Collections;

public class AiChase : AiBehavior {
    public float chaseTimeout = 5;
    private GameObject _obj;
    private HumanController _selfController;
    private bool _chasing;
    public RandomSoundPlayer endChasingSound;

    protected override void OnBegin(AiBlackboard blackboard) {
        base.OnBegin(blackboard);
        if (_obj == null) {
            _obj = blackboard.Obj;
            _selfController = _obj.GetComponent<HumanController>();
        }
    }

    private void OnEndChasing() {
        Debug.Log("Begin chasing");
        if (endChasingSound != null) {
            endChasingSound.Play();
        }
    }

    private void OnBeginChasing() {
        Debug.Log("End chasing");
    }

    protected override BehaviorStatus OnExecute(AiBlackboard blackboard) {
        float time;
        if (!blackboard.GetValue(BlackboardVariables.LastSuspiciousTime, out time)) {
            return BehaviorStatus.Fail;
        }

        //check if chasing too long
        if (Time.time - time >= chaseTimeout) {
            if (_chasing) {
                _chasing = false;
                OnEndChasing();
            }
            return BehaviorStatus.Fail;
        }

       

        //do chase!
        if (!_chasing) {
            _chasing = true;
            OnBeginChasing();
        }


        Vector3 chaseTarget;
        if (blackboard.GetValue(BlackboardVariables.LastEnemyPosition, out chaseTarget)) {
            if (_selfController != null) {
                float dir = Mathf.Sign(chaseTarget.x - _obj.transform.position.x);

                if (Mathf.Abs(chaseTarget.x - _obj.transform.position.x) > 0.3f) {
                    _selfController.UpdateMovement(dir * _selfController.maxWalkSpeed);
                }
               
            }
        }
        return BehaviorStatus.Success;
    }
}