Unity 实现按照设定路线行走脚本与操作

最新推荐文章于 2023-03-03 21:13:10 发布

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最新推荐文章于 2023-03-03 21:13:10 发布

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CC 4.0 BY-SA版权

分类专栏： unity2018

本文链接：https://blog.youkuaiyun.com/qq_35037137/article/details/88716808

本文分享了从Unity官方Demo中提取的核心代码，用于实现角色按照预设路线行走。重点介绍了关键代码部分，方便开发者快速理解和应用。同时推荐访问paws3d爪爪学院获取更多Unity 2018教程，并提供了Unity学习交流群的信息。

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这个代码是从官网的一个Demo中扒出来的，Demo中代码较多，好多用不到，不利于查看核心代码

核心代码

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;

            //