十 手遊開發神器 cocos2d-x editor 之觸摸事件

這一節 我將實現讓小怪物跟隨我的觸摸方向移動，同時觸摸的地方產生一個四周發散的效果

效果如下：

代碼下載：http://www.kuaipan.cn/file/id_25348935635744782.htm?source=1

打開MainLayer.js,把onDidLoadFromCCB函數修改如下，讓觸摸可用；

MainLayer.prototype.onDidLoadFromCCB = function () {
    if (sys.platform == 'browser') {
        this.onEnter();
    }
    else {
        this.rootNode.onEnter = function () {
            this.controller.onEnter();
        };
    }

    this.rootNode.schedule(function (dt) {
        this.controller.onUpdate(dt);
    });

    this.rootNode.onExit = function () {
        this.controller.onExit();
    };

    this.rootNode.onTouchesBegan = function (touches, event) {
        this.controller.onTouchesBegan(touches, event);
        return true;
    };

    this.rootNode.onTouchesMoved = function (touches, event) {
        this.controller.onTouchesMoved(touches, event);
        return true;
    };
    this.rootNode.onTouchesEnded = function (touches, event) {
        this.controller.onTouchesEnded(touches, event);
        return true;
    };
    this.rootNode.setTouchEnabled(true);
};

在文件底部加入 觸摸開始，觸摸移動，觸摸結束函數；

MainLayer.prototype.onTouchesBegan = function (touches, event) {
    var loc = touches[0].getLocation();
}

MainLayer.prototype.onTouchesMoved = function (touches, event) {
    cc.log("onTouchesMoved");
}

MainLayer.prototype.onTouchesEnded = function (touches, event) {
    cc.log("onTouchesEnded");
}

再創建小怪物的根據點(x,y)移動的函數；

MainLayer.prototype.monsterMove = function (x, y) {
    this.monster.stopAllActions();
    cc.AnimationCache.getInstance().addAnimations("Resources/snow_frame.plist");//添加幀動畫文件
    var action0 = cc.Sequence.create(cc.MoveTo.create(5, cc.p(x, y)));  //向前移動
    var actionFrame = cc.Animate.create(cc.AnimationCache.getInstance().getAnimation("monster"));   //獲取幀動畫
    var action1 = cc.Repeat.create(actionFrame, 90000);
    var action2 = cc.Spawn.create(action0, action1); //同步動畫
    this.monster.runAction(action2);
}

觸摸結束時，加入monsterMove函數，這時觸摸一個點，小怪物會立刻移動到該位置；

MainLayer.prototype.onTouchesEnded = function (touches, event) {
    cc.log("onTouchesEnded");
    var loc = touches[0].getLocation();
    this.monsterMove(loc.x, loc.y);
}

按照之前博客教過的在particles目錄下創建一個發散粒子，現在在觸摸的地方加入發散效果，效果週期爲3秒，3秒後消失；

再次打開MainLayer.js,加入創建粒子的函數

MainLayer.prototype.createParticle = function (name, x, y) {
    var particle = cc.ParticleSystem.create("Resources/particles/" + name + ".plist");
    particle.setAnchorPoint(cc.p(0.5, 0.5));
    particle.setPosition(cc.p(x, y));
    particle.setPositionType(1);
    particle.setDuration(3);
    this.rootNode.addChild(particle);
}

同時在觸摸結束時加入粒子函數；

MainLayer.prototype.onTouchesEnded = function (touches, event) {
    cc.log("onTouchesEnded");
    var loc = touches[0].getLocation();
    this.monsterMove(loc.x, loc.y);
    this.createParticle("around", loc.x, loc.y);
}

點擊運行；一切OK；

下一篇文章 我會介紹cocos2d-x  editor的音樂和音效       筆者（李元友）

資料來源：cocos2d-x  editor