cocos2d-js 事件
2017-09-04 本文已影响0人
写java的逗比叫z1
1. 鼠标事件
使用cc.eventManager.addListener监听鼠标事件
cc.eventManager.addListener({
event:cc.EventListener.MOUSE, // 表示监听鼠标事件
onMouseDown:function (event) { // 监听鼠标按下
},
onMouseMove:function (event) { // 鼠标移动
},
onMouseUp:function (event) { // 鼠标弹起
}
},node);
addListener接收两个参数，第一个参数是监听信息对象，第二个是监听的节点
判断当前平台是否有鼠标事件
'mouse' in cc.sys.capabilities;
var MouseEventLayer = cc.Layer.extend({
ctor:function () {
this._super();
if('mouse' in cc.sys.capabilities) {
cc.eventManager.addListener({
event: cc.EventListener.MOUSE,
onMouseDown:function(event){
var pos = event.getLocation();
var target = event.getCurrentTarget();
if(event.getButton() === cc.EventMouse.BUTTON_LEFT) {
console.log("LEFT BUTTON click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_RIGHT) {
console.log("RIGHT BUTTON click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_MIDDLE) {
console.log("MIDDLE BUTTON click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_4) {
console.log("MIDDLE 4 click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_5) {
console.log("MIDDLE 5 click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_6) {
console.log("MIDDLE 6 click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_7) {
console.log("MIDDLE 7 click at : " + pos.x+":"+pos.y);
} else if(event.getButton() === cc.EventMouse.BUTTON_8) {
console.log("MIDDLE 8 click at : " + pos.x+":"+pos.y);
}
},
onMouseMove : function (event) {
var pos = event.getLocation();
var target = event.getCurrentTarget();
console.log("Moving at : " + pos.x+":"+pos.y);
},
onMouseUp : function (event) {
var pos = event.getLocation();
var target = event.getCurrentTarget();
console.log("Up at : " + pos.x+":"+pos.y);
}
},this);
} else {
console.log("当前平台不支持鼠标");
}
return true;
}
});
event参数是个对象，包含多个常用方法
- event.getLocation : 获取事件发生的坐标
- event.getLocationX/getLocationY ： 获取一个值
- event.getCurrentTarget: 获取当前处理鼠标事件的对象，也就是cc.eventManager.addListener传的第二个参数
- event.getButton : 获取单击事件的键值
- event.getDelta: 在onMouseMove事件处理函数中有效，获取本次移动的偏移值
- event.getDeltaX/getDeltaY: 获取数值
2.触摸事件
1. 单点触摸
使用cc.eventManager.addListener监听单点触摸
var TouchEventLayer = cc.Layer.extend({
ctor:function () {
this._super();
if('touches' in cc.sys.capabilities) { //判断当前系统是否支持触摸
cc.eventManager.addListener({
event: cc.EventListener.TOUCH_ONE_BY_ONE,
onTouchBegan:this.onTouchBegan,
onTouchMoved : this.onTouchMoved,
onTouchEnded :this.onTouchEnded,
onTouchCancelled:this.onTouchCancelled
},this);
} else {
console.log("当前平台不支持触摸");
}
return true;
},
onTouchBegan:function(touch,event){
var pos = touch.getLocation();
var id = touch.getID();
console.log("onTouchBegan at : " + pos.x+":"+pos.y);
var winSize = cc.director.getWinSize();
if(pos.x < winSize/2){
return true; // 本次触摸是否生效，如果返回false，后续的moved和ended讲不再触发
}
return false;
},
onTouchMoved : function (touch,event) { // touch表示触摸对象
var pos = touch.getLocation();
var id = touch.getID();
console.log("onTouchMoved at : " + pos.x+":"+pos.y);
},
onTouchEnded : function (touch,event) {
var pos = touch.getLocation();
var id = touch.getID();
console.log("onTouchEnded at : " + pos.x+":"+pos.y);
},
onTouchCancelled:function (touch,event) {
var pos = touch.getLocation();
var id = touch.getID();
console.log("onTouchCancelled at : " + pos.x+":"+pos.y);
}
})
2.多点触摸
cc.eventManager.addListener({
event:cc.EventListener.TOUCH_ALL_AT_ONCE, // 表示监听多点事件
onTouchesBegan : function(touches,event) { // 触摸开始
},
onTouchesMoved : function(touches,event) { // 触摸移动
},
onTouchEnded : function (touches,event) { // 触摸结束
},
onTouchCancelled : function(touches,event){ // 触摸取消
}
},node);
touches对象是一个数组，每个数组元素是一个touch对象
onTouchBegan不需要返回true/false，无法控制是否接触受本次触摸
3. 键盘事件
var KeyboardEventLayer = cc.Layer.extend({
ctor:function () {
this._super();
if('keyboard' in cc.sys.capabilities) {
cc.eventManager.addListener({
event:cc.EventListener.KEYBOARD,
onKeyReleased : function (keyCode,event) {
console.log("release " + keyCode);
},
onKeyPressed : function (keyCode,event) {
console.log("press "+ keyCode);
}
},this);
} else {
console.log("当前平台不支持键盘");
}
}
})
onKeyReleased 表示按下放开
onKeyPressed 表示按下
keyCode是一个数字
cc.KEY = {
none:0,
// android
back:6,
menu:18,
// desktop
backspace:8,
tab:9,
enter:13,
shift:16, //should use shiftkey instead
ctrl:17, //should use ctrlkey
alt:18, //should use altkey
pause:19,
capslock:20,
escape:27,
space:32,
pageup:33,
pagedown:34,
end:35,
home:36,
left:37,
up:38,
right:39,
down:40,
select:41,
insert:45,
Delete:46,
0:48,
1:49,
2:50,
3:51,
4:52,
5:53,
6:54,
7:55,
8:56,
9:57,
a:65,
b:66,
c:67,
d:68,
e:69,
f:70,
g:71,
h:72,
i:73,
j:74,
k:75,
l:76,
m:77,
n:78,
o:79,
p:80,
q:81,
r:82,
s:83,
t:84,
u:85,
v:86,
w:87,
x:88,
y:89,
z:90,
num0:96,
num1:97,
num2:98,
num3:99,
num4:100,
num5:101,
num6:102,
num7:103,
num8:104,
num9:105,
'*':106,
'+':107,
'-':109,
'numdel':110,
'/':111,
f1:112, //f1-f12 don't work on ie
f2:113,
f3:114,
f4:115,
f5:116,
f6:117,
f7:118,
f8:119,
f9:120,
f10:121,
f11:122,
f12:123,
numlock:144,
scrolllock:145,
';':186,
semicolon:186,
equal:187,
'=':187,
',':188,
comma:188,
dash:189,
'.':190,
period:190,
forwardslash:191,
grave:192,
'[':219,
openbracket:219,
backslash:220,
']':221,
closebracket:221,
quote:222,
// gamepad control
dpadLeft:1000,
dpadRight:1001,
dpadUp:1003,
dpadDown:1004,
dpadCenter:1005
};
4.重力感应事件
var AccelerometerLayer = cc.Layer.extend({
ctor:function () {
this._super();
var winSize = cc.director.getWinSize();
if('accelerometer' in cc.sys.capabilities){
cc.inputManager.setAccelerometerInterval(1/30); //设置重力感应的频率
cc.inputManager.setAccelerometerEnabled(true);
cc.eventManager.addListener({
event:cc.EventListener.ACCELERATION,
callback:function (accelerometerInfo,event) {
var target = event.getCurrentTarget();
console.log("x:"+accelerometerInfo.x+" y:"+accelerometerInfo.y + " z:"+accelerometerInfo.z);
var w = winSize.width;
var h = winSize.height;
var x = w*accelerometerInfo.x + w/2;
var y = h*accelerometerInfo.y + h/2;
x = x*0.2 + target.prevX*0.8; //小球慢慢移动到目标位置
y = y*0.2 + target.prevY*0.8;
target.prevX = x;
target.prevY = y;
target.sprite.x = x;
target.sprite.y = y;
}
},this);
var sprite = this.sprite = new cc.sprite("res/item_2.png");
this.addChild(sprite);
sprite.x = winSize.width/2;
sprite.y = winSize.height/2;
this.prevX = 0;
this.prevY = 0;
} else {
console.log("当前平台不支持重力感应");
}
}
})
5. 游戏进入后台/恢复显示事件
cc.eventManager.addCustomListener(cc.game.EVENT_HIDE,function () {
//游戏进入后台
});
cc.eventManager.addCustomListener(cc.game.EVENT_SHOW,function () {
//游戏恢复显示
});
参考资料 Cocos2d-JS开发之旅 郑高强著 电子工业出版社
