關於unity的滑鼠雙擊和移動觸控式螢幕的雙擊
阿新 • • 發佈:2019-01-27
滑鼠的雙擊相對比較簡單,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");
}
}
上面是雙擊螢幕的事件,假如想雙擊某個物體呢,就要這樣:
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,當滑鼠進入你想點選的物體後,雙擊才有效果,否則滑鼠未進入物體,或者exit時,b = false,雙擊無效果。
下面是移動裝置上觸屏的雙擊:
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;
}
}
我在一篇部落格看到過移動端GetMouseButtonDown是有效果的,所以這樣利用t1,t2,記錄兩次單擊的時間間隔,假如小於0.2s,則被判斷為雙擊。
同樣,移動端點選某一確定物體的雙擊事件,把下面指令碼賦給要點選的物體,
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; } } } }
對於t1和t2可以定義為System.DateTime型別,這樣t2 = System.DateTime.Now;相減後用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;
}
}
}
}
最後是,關於GUI的雙擊,原理都類似:
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;
}
}