关于unity的鼠标双击和移动触摸屏的双击

来源：互联网发布：淘宝销售额的计算公式编辑：程序博客网时间：2024/04/30 15:20

鼠标的双击相对比较简单，百度一下可以搜到很多，如下：

function OnGUI(){if(Event.current.isMouse && Event.current.type == EventType.MouseDown && Event.current.clickCount == 2){print("double click");}}

上面是双击屏幕的事件，假如想双击某个物体呢，就要这样：

private var b = false;function OnGUI(){if(Event.current.isMouse && Event.current.type == EventType.MouseDown && Event.current.clickCount == 2){if(b){print("double click " + transform.name);}}}function OnMouseEnter(){b = true;}function OnMouseExit(){b =false;}

意思就是，当鼠标进入你想点击的物体后，双击才有效果，否则鼠标未进入物体，或者exit时，b = false，双击无效果。

下面是移动设备上触屏的双击：

private var t1:double;private var t2:double;function Update(){if(Input.GetMouseButtonDown(0)){t2 = Time.realtimeSinceStartup;if(t2 - t1 < 0.2){print("double click");}t1 = t2;}}

我在一篇博客看到过移动端GetMouseButtonDown是有效果的，所以这样利用t1，t2,记录两次单击的时间间隔，假如小于0.2s，则被判断为双击。

同样，移动端点击某一确定物体的双击事件，把下面脚本赋给要点击的物体，

private var t1:double;private var t2:double;public var cam:Camera;function Update(){if(Input.GetMouseButtonDown(0)){var ray:Ray = cam.ScreenPointToRay(Input.mousePosition);var hit:RaycastHit;if(Physics.Raycast(ray,hit)){if(hit.transform.name == gameObject.transform.name){t2 = Time.realtimeSinceStartup;if(t2 - t1 < 0.2){print("double click " + transform.name);}t1 = t2;}}}}

对于t1和t2可以定义为System.DateTime类型，这样t2 = System.DateTime.Now;相减后用TimeSpan.如下：

private var t1:System.DateTime;private var t2:System.DateTime;public var cam:Camera;function Update(){if(Input.GetMouseButtonDown(0)){var ray:Ray = cam.ScreenPointToRay(Input.mousePosition);var hit:RaycastHit;if(Physics.Raycast(ray,hit)){if(hit.transform.name == gameObject.transform.name){t2 = System.DateTime.Now;if(t2 - t1 < System.TimeSpan(0,0,0,0,200)){print("double click " + transform.name);}t1 = t2;}}}}

最后是，关于GUI的双击，原理都类似：

private var b = false;private var t = 0.0;function OnGUI(){if(GUI.Button(Rect(10,10,80,50),"click me")){t = Time.time;if(b){print("it's doublic click");b = false;}else{b = true;}}}function FixedUpdate(){if(t + 0.2 < Time.time){b = false;}}

0 0