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 < )
             yield break;

         int direction = ;
         int index = ;

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

             if (LinePoint.Length == ) continue;

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

             index = index + direction;
         }
     }

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

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

         if (Points.Count < ) return;

         for (int i = ; i < LinePoint.Length; i++)
         {
             Vector3 start = LinePoint[i - ].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 = ;

    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