createjs小游戲開發(fā)的實(shí)例過程

this.backdrop = new createjs.Bitmap(bg);this.backdrop.x = 0;this.backdrop.y = 0;this.stage.addChild(that.backdrop);this.w = bg.width;this.h = bg.height;//創(chuàng)建一個背景副本，無縫連接var copyy = -bg.height;this.copy = new createjs.Bitmap(bg);this.copy.x = 0;this.copy.y = copyy; //在畫布上y軸的坐標(biāo)為負(fù)的背景圖長//使用createjs的tick函數(shù)，逐幀刷新舞臺createjs.Ticker.addEventListener("tick", tick);function tick(e) { if (e.paused !== 1) {//舞臺逐幀邏輯處理函數(shù)that.backdrop.y = that.speed + that.backdrop.y;
 that.copy.y = that.speed + that.copy.y;if (that.copy.y > -40) {
 that.backdrop.y = that.copy.y + copyy;
 }if (that.copy.y > -copyy - 100) {
 that.copy.y = copyy + that.backdrop.y;
 }
 that.stage.update(e);
 } 
}

// 刪除越界的元素for (var i = 0, flag = true, len = that.props.length; i < len; flag ? i++ : i) {if (that.props[i]) {if (that.props[i].y > height + 300) {
 that.stage.removeChild(that.props[i]);
 that.props.splice(i, 1);
 flag = false;
 } else {
 flag = true;
 }
 }
}

var num = parseInt(2 * Math.random()) + 1, i;for (i = 0; i < num; i++) {var type = parseInt(10 * Math.random()) + 1;// 設(shè)置道具出現(xiàn)比例if (type == 1) {/繪制炸彈
 } else if ((type >= 2) && (type <= 5)) {//繪制加速道具} else if ((type >= 6) && (type <= 10)) {//繪制減速道具 }
 }

var time = (parseInt(3 * Math.random()) + 1); //隨機(jī)取1～3整數(shù)// 隨機(jī)時間繪制障礙物setTimeout(function () {
 that.propsTmp = []; //清空 that.drawObstacle(obj);
}, time * 400); //400ms ~ 1200ms

createjs.Ticker.addEventListener(“tick”, tick); 
function tick(e) { if (e.paused === 1) { //處理 }
} 
createjs.Ticker.paused = 1; //在函數(shù)任何地方調(diào)用這個，則會暫停tick里面的處理 createjs.Ticker.paused = 0; //恢復(fù)游戲

container.name = ‘role’; //設(shè)置name值car = this.stage.getChildByName(“role”); //使用name值方便獲取到該對象

//放置靜態(tài)資源的數(shù)組
var manifest = [
 {src: __uri('./images/car_prop2_tyre@2x.png'), id: 'tyre'}
];
var queue = new createjs.LoadQueue();
queue.on('complete', handleComplete, this);
queue.loadManifest(manifest);
//資源加載成功后,進(jìn)行處理
function handleComplete() {
 var tyre = queue.getResult('tyre'); //拿到加載成功后的img
}

;(function () {function CarGame(){}
 CarGame.prototype = {
 init:function(manifest) {this.preLoad(manifest); //資源預(yù)加載//時間倒計時this.prepare(3, 3); //倒計時3秒this.bindEvent(); 
 },
 render:function() { this.drawBg(bg1); this.drawRole(car, effbomb, effquick); this.drawObstacle(obj);
 },//在游戲結(jié)束的時候批量銷毀destroy:function(){//移除tick事件createjs.Ticker.removeEventListener("tick", this.tick);//暫停里程，倒計時clearInterval(this.changem);
 clearTimeout(this.gametime);
 }，//由于期間用戶可能切出程序進(jìn)行其他操作，因此都需要一個暫停的接口pause:function() {//暫停里程，倒計時clearInterval(this.changem);
 clearTimeout(this.gametime);//暫停頁面滾動createjs.Ticker.paused = 1;
 },//重新開始游戲reStart:function(){ this.destroy(); this.init(manifest);
 },
 gameOver:function(){ //顯示爆炸效果 var car = this.stage.getChildByName("role");
 car.getChildByName('bomb').visible = true;
 car.getChildByName('quick').visible = false; this.destroy();
 }
 }
})()