Unity3D笔记切水果二刀光剑影

你的名字 2021-11-09 10:48 310阅读 0赞

一、步骤一创建一个空GameObject、js

![010812119516013.jpg][]

二、代码

#pragma strict
    var myColor:Color;
    var firstPosition:Vector3;//鼠标点击的第一个点
    var secondPosition:Vector3;//鼠标放开的位置
    var middlePosition:Vector3;
    var isClick:boolean=false;
    private var lineRenderer:LineRenderer;
    
    function Start () {
        lineRenderer=gameObject.AddComponent(LineRenderer);
        lineRenderer.material.color=myColor;
        lineRenderer.SetWidth(0.1,0.1);//设置宽度 起点宽度和终点宽度 function SetWidth (start : float, end : float) : void 
    }
    
    function Update () {
        var isMouseDown=Input.GetMouseButton(0);//获取按钮
        if(isMouseDown&&!isClick){
            firstPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            lineRenderer.SetVertexCount(1);//设置线段数 
            lineRenderer.enabled=true;
            lineRenderer.SetPosition(0,firstPosition);
            isClick=true;
        }
        if(isMouseDown){
            secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            lineRenderer.SetVertexCount(2);
            lineRenderer.SetPosition(1,secondPosition);
        }
        if(Input.GetMouseButtonUp(0)){
            isClick=false; 
            secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            lineRenderer.SetVertexCount(2);
            lineRenderer.SetPosition(1,secondPosition);
        }    
    }

三、实现划线功能

![010810173144556.gif][]

四、实现刀光剑影

![010919486341487.gif][]

编辑好位置

![010937261787573.jpg][]

调用刀光剑影

![011017551454238.gif][]

最终代码

#pragma strict
    //var myColor:Color;
    var firstPosition:Vector3;//鼠标点击的第一个点
    var secondPosition:Vector3;//鼠标放开的位置
    var middlePosition:Vector3;
    var isClick:boolean=false;
    
    var myRay:GameObject;
    private var rayGameObject:GameObject;
    
    //private var lineRenderer:LineRenderer;
    
    //function Start () {
         
    //    lineRenderer=gameObject.AddComponent(LineRenderer);
    //    lineRenderer.material.color=myColor;
    //    lineRenderer.SetWidth(0.1,0.1);//设置宽度 起点宽度和终点宽度 function SetWidth (start : float, end : float) : void 
    //}
    
    function Update () {
        var isMouseDown=Input.GetMouseButton(0);//获取按钮
        if(isMouseDown&&!isClick){
            firstPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            //lineRenderer.SetVertexCount(1);//设置线段数 
            //lineRenderer.enabled=true;
            //lineRenderer.SetPosition(0,firstPosition);
            isClick=true;
        }
        if(isMouseDown){
            secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            //lineRenderer.SetVertexCount(2);
            //lineRenderer.SetPosition(1,secondPosition);
        }
        if(Input.GetMouseButtonUp(0)){
            isClick=false; 
            secondPosition=Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1));
            //lineRenderer.SetVertexCount(2);
            //lineRenderer.SetPosition(1,secondPosition);
            
            middlePosition=(firstPosition+secondPosition)/2.0;
            var angle:float=Mathf.Atan((secondPosition.y-firstPosition.y)/(secondPosition.x-firstPosition.x));
            rayGameObject=Instantiate(myRay,middlePosition,Quaternion.AngleAxis(angle*100/3.14,Vector3.forward));
            Destroy(rayGameObject,1.0);
        }
        
        
        
    }

转载于:https://www.cnblogs.com/PEPE/p/3574667.html

[010812119516013.jpg]: /images/20211109/94960f664ba34334846d6b3a84c70574.png
[010810173144556.gif]: /images/20211109/171224132d3d4416a98ad94d1da08418.png
[010919486341487.gif]: /images/20211109/c57e87c16d194869b59706d4b4056d46.png
[010937261787573.jpg]: /images/20211109/a19afd1e6d6e484c88c6b3b81801d2de.png
[011017551454238.gif]: /images/20211109/c09e83c37e8643d1bbe0076c9bc41087.png