Unity实现物体运动时画出轨迹 Unity实现物体运动时画出轨迹

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

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2、新建空物体，把轨迹画出来，设计和脚本。

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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

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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

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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)); }}

【Unity实现物体运动时画出轨迹】6、运行结果