【脚本资源】红外瞄准器（转载） - 纳金网

using UnityEngine;
using System.Collections;
//转载请说明出处
public class pointerCtrl : MonoBehaviour
{
public float scrollSpeed = 0.5f;
public float pulseSpeed = 1.5f;
public float noiseSize = 1.0f;
public float maxWidth = 0.5f;
public float minWidth = 0.5f;
private float aniTime = 0.0f;
private float aniDir = 1.0f;
private LineRenderer lRenderer;
public GameObject pointer = null; //小红点
private PreFrameRaycast raycast; //光线投射
void Start ()
{
lRenderer = gameObject.GetComponent (typeof(LineRenderer)) as LineRenderer;
raycast = gameObject.GetComponent (typeof(PreFrameRaycast)) as PreFrameRaycast// Update is called once per frame
}
void Update ()
{
//光线看起来有动感
renderer.material.mainTextureOffset += new Vector2 (Time.deltaTime * aniDir * scrollSpeed, 0);
//设置纹理偏移量
renderer.material.SetTextureOffset ("_NoiseTex", new Vector2 (-Time.time * aniDir * scrollSpeed, 0.0f));
float aniFactor = Mathf.PingPong (Time.time * pulseSpeed, 1.0f);
aniFactor = Mathf.Max (minWidth, aniFactor) * maxWidth;
//设置光线的宽
lRenderer.SetWidth (aniFactor, aniFactor);
//光线的起点，枪口的地方
lRenderer.SetPosition(0,this.gameObject.transform.position);
if (raycast == null) {
Debug.Log ("raycast is null");
return;
}
//获取光线的碰撞信息
RaycastHit hitInfo = raycast.GetHitInfo ();
//光线碰撞到物体
if (hitInfo.transform) {
//光线的终点，即光线的碰撞点
lRenderer.SetPosition (1, hitInfo.point);
renderer.material.mainTextureScale = new Vector2 (0.1f * (hitInfo.distance), renderer.material.mainTextureScale.y);
renderer.material.SetTextureScale ("_NoiseTex", new Vector2 (0.1f * hitInfo.distance * noiseSize, noiseSize));
if (pointer) {
pointer.renderer.enabled = true;
pointer.transform.position = hitInfo.point + (transform.position - hitInfo.point) * 0.01f;
pointer.transform.rotation = Quaternion.LookRotation (hitInfo.normal, transform.up);
pointer.transform.eulerAngles = new Vector3 (90, pointer.transform.eulerAngles.y, pointer.transform.eulerAngles.z);
}
} else { //光线没有碰撞到物体
if (pointer) {
pointer.renderer.enabled = false;
}
//光线的最大长度
float maxDist = 200.0f;
//当光线没有碰撞到物体，终点就是枪口前方最大距离处
lRenderer.SetPosition (1, (this.transform.forward * maxDist));
renderer.material.mainTextureScale = new Vector2 (0.1f * maxDist, renderer.material.mainTextureScale.y);
renderer.material.SetTextureScale ("_NoiseTex", new Vector2 (0.1f * maxDist * noiseSize, noiseSize));
}
}
}

复制代码

using UnityEngine;
using System.Collections;
//转载请说明出处
public class PreFrameRaycast : MonoBehaviour {
private RaycastHit hitInfo;
private Transform tr;
// Use this for initialization
void Start () {
}
void Awake(){
tr = this.transform;
}
// Update is called once per frame
void Update () {
hitInfo = new RaycastHit();
Physics.Raycast(tr.position,tr.forward,out hitInfo);
Debug.DrawRay(tr.position,tr.forward,Color.red);
}
//返回射线的碰撞信息
public RaycastHit GetHitInfo(){
if(hitInfo.Equals(null)){
Debug.LogWarning("hitInfo is null");
}
return hitInfo;
}
}

复制代码