[cocos2d-js]chipmunk例子（二）

var TAG_SPRITE_BALL = ;
var TAG_SPRITE_USER = ;
var TAG_SPRITE_NPC = ;
var PTM_RATIO = ;
var GRABABLE_MASK_BIT = <<;
var NOT_GRABABLE_MASK = ~GRABABLE_MASK_BIT;
 
var MainLayer = cc.Layer.extend({
    _ball:null,
    _man:null,
    _rpc:null,
    _leftGoal:null,
    _rightGoal:null,
    _leftPower:null,
    _rightPower:null,
    _time:,
 
    space:null,
 
    ctor:function () {
        this._super();
        var size = cc.director.getWinSize();
 
        this._ball = new Ball();
        this._ball.x = size.width / ;
        this._ball.y = size.height / ;
        this.addChild(this._ball);
 
        // 左方向
        var btnLeft = cc.MenuItemImage.create(
            res.btn_left_up,
            res.btn_left_down,
            function () {
                this._man.runLeft();
            }, this);
        btnLeft.x = ;
 
        // 右方向
        var btnRight = cc.MenuItemImage.create(
            res.btn_right_up,
            res.btn_right_down,
            function () {
                this._man.runRight();
            }, this);
        btnRight.x = ;
 
        // power
        var btnPower = cc.MenuItemImage.create(
            res.btn_power_up,
            res.btn_power_down,
            function () {
                this._man.power();
            }, this);
        btnPower.x = ;
 
        // jump
        var btnJump = cc.MenuItemImage.create(
            res.btn_jump_up,
            res.btn_jump_down,
            function () {
                this._man.jump();
            }, this);
        btnJump.x = ;
 
        // kick
        var btnKick = cc.MenuItemImage.create(
            res.btn_kick_up,
            res.btn_kick_down,
            function () {
                this._man.kick();
            }, this);
        btnKick.x = ;
 
        // 暂停
        var btnPause = cc.MenuItemImage.create(
            "res/pause.png",
            "res/pause2.png",
            function () {
                this.onStop();
            }, this);
        btnPause.x = size.width - ;
        btnPause.y = size.height - ;
 
        var menu = cc.Menu.create(btnLeft, btnRight, btnPower, btnJump, btnKick, btnPause);
        menu.x = ;
        menu.y = ;
        this.addChild(menu, );
 
        // 主角
        this._man = new Footballer_cn();
        this._man.flippedX = true;
        this._man.x = ;
        this._man.y = ;
        this._man.anchorX = 0.5;
        this._man.anchorY = ;
        this.addChild(this._man,,TAG_SPRITE_USER);
        this._npc = new Footballer_br();
        this._npc.x = size.width - ;
        this._npc.y = ;
        this._npc.anchorX = 0.5;
        this._npc.anchorY = ;
        this.addChild(this._npc,,TAG_SPRITE_NPC);
 
        // 球门
        this._leftGoal = new Goalpost(true);
        this._leftGoal.x = ;
        this._leftGoal.y = ;
        this._leftGoal.anchorX = ;
        this._leftGoal.anchorY = ;
        this.addChild(this._leftGoal);
 
        this._rightGoal = new Goalpost();
        this._rightGoal.x = size.width;
        this._rightGoal.y = ;
        this._rightGoal.anchorX = ;
        this._rightGoal.anchorY = ;
        this.addChild(this._rightGoal);
 
        // power
        this._leftPower = new PowerProgress(size.width/-,size.height-,,0.5,this);
        this.addChild(this._leftPower, );
        this._rightPower = new PowerProgress(size.width/+,size.height-,,0.5,this);
        this.addChild(this._rightPower, );
 
        // 系统计划任务，即每帧调用update函数
        this.scheduleUpdate();
        // 自定义计划任务
        this.schedule(this.uiSchedule, );
 
        cc.sys.dumpRoot();
        cc.sys.garbageCollect();
 
        this.initChipmunk();
 
        return true;
    },
    onStop:function () {
        this._bStop = !this._bStop;
        if (this._bStop == true) {
            cc.director.pause();
        }
        else {
            cc.director.resume();
        }
    },
 
    update:function (dt) {
        this.space.step(dt);
    },
    uiSchedule:function () {
        this._time++;
        this._leftPower.showPower();
        this._rightPower.showPower();
    },
    initChipmunk:function() {
        this.space = new cp.Space();
        var sprite =  this.createPhysicsSprite( cc.p(cc.director.getWinSize().width/ , cc.director.getWinSize().height-) );
        this.addChild( sprite, );
 
        this.addWalls();
        this.space.gravity = cp.v(, -);
    },
    initPhysics:function() {
        var space = this.space ;
        var staticBody = space.staticBody;
        var winSize = cc.director.getWinSize();
 
        // Walls
        var walls = [ new cp.SegmentShape( staticBody, cp.v(,), cp.v(winSize.width,),  ),                // bottom
            new cp.SegmentShape( staticBody, cp.v(,winSize.height), cp.v(winSize.width,winSize.height), ),    // top
            new cp.SegmentShape( staticBody, cp.v(,), cp.v(,winSize.height), ),                // left
            new cp.SegmentShape( staticBody, cp.v(winSize.width,), cp.v(winSize.width,winSize.height), )    // right
        ];
        for( var i=; i < walls.length; i++ ) {
            var shape = walls[i];
            shape.setElasticity();
            shape.setFriction();
            space.addStaticShape( shape );
        }
 
        // Gravity
        space.gravity = cp.v(, -);
    },
    addWalls:function() {
        // Walls
        var winSize = cc.director.getWinSize();
        var walls = [ new cp.SegmentShape( this.space.staticBody, cp.v(,), cp.v(winSize.width,),  ),                // bottom
            new cp.SegmentShape( this.space.staticBody, cp.v(,winSize.height), cp.v(winSize.width,winSize.height), ),    // top
            new cp.SegmentShape( this.space.staticBody, cp.v(,), cp.v(,winSize.height), ),                // left
            new cp.SegmentShape( this.space.staticBody, cp.v(winSize.width,), cp.v(winSize.width,winSize.height), )    // right
        ];
        for( var i=; i < walls.length; i++ ) {
            var shape = walls[i];
            shape.setElasticity(0.8);
            shape.setFriction(0.1);
            this.space.addStaticShape( shape );
        }
    },
    createPhysicsSprite:function( pos ) {
 
        var radius = ;
        var mass = ;
 
        var body = new cp.Body(mass, cp.momentForCircle(mass, , radius,cp.v(, )));
        body.setPos( pos );
        this.space.addBody( body );
        var shape = new cp.CircleShape(body, radius,cp.v(, )); //new cp.BoxShape( body, 48, 108);
        shape.setElasticity(  );
        shape.setFriction( 0.1 );
 
        this.space.addShape( shape );
 
        var sprite = cc.PhysicsSprite.create(res.b_ball_01);
        sprite.setBody( body );
        return sprite;
    },
    setupDebugNode:function()
    {
        // debug only
        this._debugNode = cc.PhysicsDebugNode.create( this.space );
        this._debugNode.visible = false ;
        this.addChild( this._debugNode );
    }
});
 
var MainScene = cc.Scene.extend({
    onEnter:function () {
        this._super();
        this.addChild(new GameBackgroundLayer());
        this.addChild(new MainLayer());
    }
});