using UnityEngine;
using System.Collections;

public class AttachOnCollision_QR2 : MonoBehaviour 
{
    public QuickRope2 rope;
    //public string connectableTag = "Player";
    public KeyCode detachKey = KeyCode.Space;
    public Transform checkDisPoint;//检查碰撞时目标可吊点位与吊钩的距离 避免任意位置都能吊起的情况
    //public GUIText HUD = null;
    private CraneInterGO attachedObject = null;
    public bool isConnected = false;


    void Update()
    {
        if (Input.GetKeyDown(detachKey))
        {
            if (isConnected) //已经吊起物体时 放下物体
            {
                rope.DetachObject(attachedObject.gameObject);
                attachedObject.UnSling();
                //if (HUD)
                //    HUD.text = "Hook Disconnected";
            }
            else  if(attachedObject) //满足吊起条件 空格吊起一个物体
            {
                isConnected = true;
                rope.AttachObject(attachedObject.gameObject, rope.Joints.Count - 1, false);
                attachedObject.OnSling();
            }
        }
    }

    void OnCollisionEnter(Collision col)
    {
        if (isConnected)
            return;
        CraneInterGO craneInterGO = col.transform.GetComponent<CraneInterGO>();
        if (!craneInterGO || !craneInterGO.isSlinged)
            return;
        if (Vector3.Distance(checkDisPoint.transform.position, craneInterGO.GetCraneAnchorPos()) >0.2f)
        {
            Debug.Log("起吊位置差过大");
            return;
        }
        attachedObject = craneInterGO;
        //if (HUD)
        //    HUD.text = "Hook Connected";
    }

    private void OnCollisionExit(Collision collision)
    {
        if (attachedObject&&collision.gameObject == attachedObject.gameObject)
        {
            attachedObject = null;
            isConnected = false;
        }
    }
}