unity实现根据路径生成贝塞尔曲线路径并且物体跟随路径移动

参考视频：Unity如何实现物体沿指定路线移动_哔哩哔哩_bilibili

Unity 功能合集之物体沿自定义路径移动_哔哩哔哩_bilibili

一，根据定点生成贝塞尔曲线

1.创建空对象Path,添加自定义脚本

path.cs脚本内容如下：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class path : MonoBehaviour
{
    private List<Vector3> totalPath = new List<Vector3>();
    public List<LineRenderer> lineRenderers = new List<LineRenderer>();

    private void Awake()
    {
        GetComponentsInChildren(lineRenderers);
    }

    public List<Vector3> GetPathPoint()
    {
        totalPath.Clear();
        for (int i = 0; i < lineRenderers.Count; i++)
        {
            Vector3[] path = new Vector3[lineRenderers[i].positionCount];
            lineRenderers[i].GetPositions(path);
            totalPath.AddRange(path);
        }

        return totalPath;
    }
}

2，Path的子对象下创建空对象path(小写)，添加LineRenderer和自定义脚本Line

Line.cs脚本如下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[ExecuteInEditMode]
public class Line : MonoBehaviour
{
    public LineRenderer lineRenderer;
    public Transform pointA;
    public Transform pointB;
    public Transform pointC;
    public Transform pointD;

    // Start is called before the first frame update
    void Start()
    {
       

    }



    // Update is called once per frame
    void Update()
    {
        List<Vector3> path = BezierUtility.BeizerIntepolate4List(pointA.position, pointB.position, pointC.position, pointD.position, 40);

        lineRenderer.positionCount = path.Count;
        lineRenderer.SetPositions(path.ToArray());
    }
}

其中Bez