using System.Collections;
using System.Collections.Generic;
using UnityEngine;
//using DG.Tweening;

public class Wallcollision : MonoBehaviour
{



    BoxCollider boxCol = null;

    private void Start()
    {
        boxCol = GetComponent<BoxCollider>();
    }

    private void Update()
    {
        DetectionBox();
    }


    void DetectionBox()
    {
        //为盒子的左右两边伸出来1.4f个向量长度用于我们检测碰撞
        Vector3 scale = boxCol.transform.localScale + new Vector3(1.4f, 0, 0);
        //模拟的盒子中心点，x、y、z轴长度的一半
        Collider[] colliders = Physics.OverlapBox(boxCol.transform.position, scale / 2, boxCol.transform.rotation, LayerMask.GetMask("Detectcollisions"));

        print(colliders.Length);

        for (int i = 0; i < colliders.Length; i++)
        {
            print(colliders[i].name);

            //这只是一面墙体，其他方向类似，改轴向就是了

            //计算碰撞物体的z轴的一半宽度;
            float cube_z = colliders[i].GetComponent<MeshFilter>().sharedMesh.bounds.size.z;
            float scal_z = colliders[i].transform.lossyScale.z;
            float dqkd = cube_z * scal_z / 2;

            //计算墙体的x轴的一半宽度，
            float zqt_x = this.gameObject.GetComponent<MeshFilter>().sharedMesh.bounds.size.x;
            float zqtscal_x = this.transform.lossyScale.x;
            float qdkd = zqt_x * zqtscal_x / 2;

            //把这两个向量相加到时候我们物体作吸附运动就不会穿模，而是像吸附在墙上；
            float ydjl = dqkd + qdkd;


            //如果有DG.Tweening插件的朋友我建议用我注释的这行代码，毕竟有一个缓动效果；
            // colliders[i].transform.DOMove(new Vector3(colliders[i].transform.position.x, colliders[i].transform.position.y, this.transform.position.z - ydjl), 1);
            colliders[i].transform.localPosition = Vector3.MoveTowards(colliders[i].transform.localPosition, new Vector3(colliders[i].transform.position.x, colliders[i].transform.position.y, this.transform.position.z - ydjl), 2 * Time.deltaTime);

        }

    }



}