怎么用Unity画出物体运动时的轨迹

本篇内容主要讲解"怎么用Unity画出物体运动时的轨迹"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"怎么用Unity画出物体运动时的轨迹"吧!

本文实例为大家分享了Unity实现物体运动时画出轨迹的具体代码，供大家参考，具体内容如下

1、新建空物体，上赋LineRenderer

2、新建空物体，把轨迹画出来，设计和脚本。

3、LineMark的脚本是

using System.Collections;using System.Collections.Generic;using UnityEngine; public class LineMark : MonoBehaviour {    private GameObject clone;   private LineRenderer line;   private int i;   public GameObject obs;   public GameObject run;   Vector3 RunStart; Vector3 RunNext;  // Use this for initialization void Start () {  RunStart = run.transform.position;  clone = (GameObject)Instantiate(obs, run.transform.position, run.transform.rotation);//克隆一个带有LineRender的物体     line = clone.GetComponent();//获得该物体上的LineRender组件    //  //line.SetColors(Color.blue, Color.red);//设置颜色    //  //line.SetWidth(0.2f, 0.1f);//设置宽度    i = 0; }  // Update is called once per frame   void Update () {     RunNext = run.transform.position;   if (RunStart != RunNext) {   i++;   line.SetVertexCount(i);//设置顶点数    line.SetPosition(i-1, run.transform.position);   }   RunStart = RunNext;   //  if (Input.GetMouseButtonDown(0))  //  {  //   clone = (GameObject)Instantiate(obs, obs.transform.position, transform.rotation);//克隆一个带有LineRender的物体   //   line = clone.GetComponent();//获得该物体上的LineRender组件  //   line.SetColors(Color.blue, Color.red);//设置颜色  //   line.SetWidth(0.2f, 0.1f);//设置宽度  //   i = 0;  //   print ("GetMouseButtonDown");//  }  //  if (Input.GetMouseButton(0))  //  {  //   i++;  //   line.SetVertexCount(i);//设置顶点数  //   line.SetPosition(i - 1, Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, 15)));//设置顶点位置   //   print ("GetMouseButton");////  }       }  }

4、运动小球和脚本

Run.cs

using UnityEngine;using System.Collections; public class Run : MonoBehaviour{ public GameObject target;   //要到达的目标 public float speed = 10;    //速度 private float distanceToTarget;   //两者之间的距离 private bool move = true;      void Start() {  //计算两者之间的距离  distanceToTarget = Vector3.Distance(this.transform.position, target.transform.position);    StartCoroutine(StartShoot()); }  IEnumerator StartShoot() {   while (move)  {   Vector3 targetPos = target.transform.position;    //让始终它朝着目标   this.transform.LookAt(targetPos);    //计算弧线中的夹角   float angle = Mathf.Min(1, Vector3.Distance(this.transform.position, targetPos) / distanceToTarget) * 45;   this.transform.rotation = this.transform.rotation * Quaternion.Euler(Mathf.Clamp(-angle, -42, 42), 0, 0);   float currentDist = Vector3.Distance(this.transform.position, target.transform.position);   if (currentDist < 0.5f)    move = true;   this.transform.Translate(Vector3.forward * Mathf.Min(speed * Time.deltaTime, currentDist));   yield return null;  } }  }

5、目标小球和运动设置的脚本

follew.cs

using System.Collections;using System.Collections.Generic;using UnityEngine; public class followme : MonoBehaviour {  Rigidbody follew; // Use this for initialization void Start () {  follew = GetComponent (); }  // Update is called once per frame void Update () {   transform.Translate (new Vector3(0.1f,0.1f,0.1f)); }}

6、运行结果

到此，相信大家对"怎么用Unity画出物体运动时的轨迹"有了更深的了解，不妨来实际操作一番吧！这里是网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！