Cocos2d-js03_画九宫格及对节点进行封装

Cocos2d-js03_画九宫格及对节点进行封装

1、实现画出背景，代码：

//绘制背景

 var lc = cc.LayerColor.create(cc.color(175,175,175,75),630,630);
lc.setPosition(cc.p(5,300));
lc.setAnchorPoint(cc.p(0,0));
lc.setTag(111);
this.addChild(lc);

 

2、绘画九宫格，代码：

//绘画九宫格 for(var i = 0;i <= 10; i++){
    //横线     var node = cc.DrawNode.create();
    node.drawSegment(cc.p(0,i*63),cc.p(630,i*63),1,cc.color(1,1,1,255));
    lc.addChild(node);
    //竖线     var node1 = cc.DrawNode.create();
    node1.drawSegment(cc.p(i*63,0),cc.p(i*63,630),1,cc.color(1,1,1,255));
    lc.addChild(node1);
}

3、添加SnakeGame.js类，根据传入的参数不同，添加不同的精灵，代码：

/**  * Created by chaoge on 15/6/23.  */ var SnakeGame = cc.Node.extend({
    _type:null,
    ctor:function(type){
        this._super();
        this._type = type;
        var sp = cc.Sprite.create();
        //1蛇头 2身体  3食物         switch (this._type){
            case 1:
                sp = cc.Sprite.create(res.snakeHead);
                break;
            case 2:
                sp = cc.Sprite.create(res.snakeBody);
                break;
            case 3:
                sp = cc.Sprite.create(res.snakeFood);
                break;
            default :break;
        }
        sp.setAnchorPoint(0,0);
        sp.setPosition(0,0);
        this.addChild(sp);
    }
});

SnakeGame.create = function(arg){
    var snakeGame = new SnakeGame(arg);
    return snakeGame;
};

 

4、在GameScene里面添加头和食物，代码：

//添加蛇头 this._head = new SnakeGame(1);
this._head.setScale(0.9);
this._head.now_row = Math.round(Math.random()*9);
this._head.now_col = Math.round(Math.random()*9);
this._head.setPosition(cc.p(this._head.now_col*63,this._head.now_row*63));
lc.addChild(this._head,3);

//添加食物 this._food = new SnakeGame(3);
this._food.setScale(0.9);
this._food.now_row = Math.round(Math.random()*9);
this._food.now_col = Math.round(Math.random()*9);
this._food.setPosition(cc.p(this._food.now_col*63,this._food.now_row*63));
lc.addChild(this._food,3);

5、实现移动，代码：

//蛇头移动 switch (dir){
    case SNAKE_DIR.UP:
        this._head.now_row = this._head.now_row + 1;
        break;
    case SNAKE_DIR.DOWN:
        this._head.now_row = this._head.now_row - 1;
        break;
    case SNAKE_DIR.LEFT:
        this._head.now_col = this._head.now_col - 1;
        break;
    case SNAKE_DIR.RIGHT:
        this._head.now_col = this._head.now_col + 1;
        break;
    default :break;
}
this._head.setPosition(cc.p(this._head.now_col*63,this._head.now_row*63));

视频地址：http://www.9miaoketang.com/course/37
课程讨论帖地址：http://www.9miao.com/thread-64587-1-1.html
源码地址：https://store.cocos.com/stuff/show/128289.html
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