Follow Path -》 Unity3d通用脚本

PathDefinition.cs

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

public class PathDefinition : MonoBehaviour
{
    public Transform[] LinePoint;
    List<string> test = new List<string>();

    public IEnumerator<Transform> GetPathEnumeratror() {
        if (LinePoint == null || LinePoint.Length < 1)
            yield break;

        int direction = 1;
        int index = 0;

        while (true) {
            yield return LinePoint[index];

            if (LinePoint.Length == 1) continue;

            if (index <= 0) direction = 1;
            else if (index >= (LinePoint.Length - 1)) direction = -1;

            index = index + direction;
        }
    }

    void OnDrawGizmos()
    {
        if (LinePoint == null && LinePoint.Length < 2) return;

        /// filter null
        var Points = LinePoint.Where(t => t != null).ToList();

        if (Points.Count < 2) return;

        for (int i = 1; i < LinePoint.Length; i++)
        {
            Vector3 start = LinePoint[i - 1].position;
            Vector3 end = LinePoint[i].position;
            Gizmos.DrawLine(start, end);
        }

    }
}

FollowPath.cs

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

public class FollowPath : MonoBehaviour {

    public enum FollowType
    {
        MoveToward,
        Lerp
    }


    public FollowType Type = FollowType.MoveToward;

    public PathDefinition Path;

    public float Speed = 1;

    public float MaxDistanceToGoal = .1f;

    IEnumerator<Transform> _currentPoint;

    public void Start() {
        if (Path == null) {
            return;
        }

        _currentPoint = Path.GetPathEnumeratror();
        
        _currentPoint.MoveNext();

        //set position at start point
        if (_currentPoint.Current == null) return;

        transform.position = _currentPoint.Current.position;
    }

    void Update() {
        if (_currentPoint == null || _currentPoint.Current == null)  return;

        if(Type == FollowType.MoveToward)
            transform.position = Vector3.MoveTowards(transform.position,_currentPoint.Current.position,Speed*Time.deltaTime);
        else if(Type == FollowType.Lerp)
            transform.position = Vector3.Lerp(transform.position, _currentPoint.Current.position, Speed * Time.deltaTime);

        var distanceSquared = (transform.position - _currentPoint.Current.position).sqrMagnitude;
        if (distanceSquared < MaxDistanceToGoal * MaxDistanceToGoal) {
            _currentPoint.MoveNext();
        }
    }
    
}

代码 很简单 我就不注释了，比较适用于 路径 编辑 跟踪