waypoint——使物体按着既定的路线运动

最新推荐文章于 2025-06-07 12:21:44 发布

yuanyuanluoluo

最新推荐文章于 2025-06-07 12:21:44 发布

阅读量5.4k

点赞数

CC 4.0 BY-SA版权

文章标签： unity waypoint 指定路径

本文链接：https://blog.youkuaiyun.com/yuanyuanluoluo/article/details/79744381

这篇博客介绍如何在Unity中使用waypoint让物体按照预设路径移动。通过将脚本附加到包含多个位于不同位置的子物体的空游戏对象上，可以自动设置路径。运动物体自身也需要携带跟随脚本。运行时，物体将沿着这些waypoints循环移动。对于复杂地形和动态障碍物的场景，该方法可能不适用。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

这里写图片描述


using UnityEngine;
using System.Collections;
using System.Collections.Generic;
#if UNITY_EDITOR
using UnityEditor;
#endif

public class WaypointCircuit : MonoBehaviour 
{
    public WaypointList waypointList = new WaypointList();
    [SerializeField] bool smoothRoute = true;
    int numPoints;
    Vector3[] points;
    float[] distances;

    public float editorVisualisationSubsteps = 100;
    public float Length { get; private set; }
    public Transform[] Waypoints { get { return waypointList.items; } }

    //this being here will save GC allocs
    int p0n;
    int p1n;
    int p2n;
    int p3n;

    private float i;
    Vector3 P0;
    Vector3 P1;
    Vector3 P2;
    Vector3 P3;

    // Use this for initialization
    void Awake()
    {
        if (Waypoints.Length > 1)
        {
            CachePositionsAndDistances();
        }
        numPoints = Waypoints.Length;
    }

    public RoutePoint GetRoutePoint(float dist)
    {
        // position and direction
        Vector3 p1 = GetRoutePosition(dist);
        Vector3 p2 = GetRoutePosition(dist + 0.1f);
        Vector3 delta = p2 - p1;
        return new RoutePoint(p1, delta.normalized);
    }

    public Vector3 GetRoutePosition(float dist)
    {
        int point = 0;

        if (Length == 0)
        {
            Length = distances[distances.Length - 1];
        }

        dist = Mathf.Repeat(dist, Length);

        while (distances[point] < dist) { ++point; }


        // get nearest two points, ensuring points wrap-around start & end of circuit
        p1n = ((point - 1) + numPoints) % numPoints;
        p2n = point;

        // found point numbers, now find interpolation value between the two middle points

        i = Mathf.InverseLerp(distances[p1n], distances[p2n], dist);

        if (smoothRoute)
        {
            // smooth catmull-rom calculation between the two relevant points



            // get indices for the surrounding 2 points, because
            // four points are required by the catmull-rom function
            p0n = ((point - 2) + numPoints) % numPoints;
            p3n = (point + 1) % numPoints;

            // 2nd point may have been the 'last' point - a dupe of the first,
            // (to give a value of max track dis