cocos2d-js]chipmunk例子（一）_app

概述[http://www.cnblogs.com/linn/p/3656041.html initChipmunk:function() { this.space = new cp.Space(); this.setupDebugNode(); //设置空间内刚体间联系的迭代计算器个数和d性关系迭代计算器个数. //chipmunk [http://www.cnblogs.com/linn/p/3656041.html

initChipmunk:function() {        this.space = new cp.Space();        this.setupDeBUGNode();        //设置空间内刚体间联系的迭代计算器个数和d性关系迭代计算器个数.        chipmunk使用迭代计算器计算出空间内物体的受力关系.        它建立一个大列表存放物体间所有的碰撞,连接等相互影响关系.根据实际情况传递某些相互作用.        传递相互作用的数取决于迭代器的个数,每次迭代都使计算结果更精确.        如果进行了过多的迭代,虽然物理影响效果会更好,但是这也会消耗过多的cpu处理时间.        如果进行的迭代太少,物理模拟效果会不精确,或者使本该静止的物体没能静止下来.        使用迭代器的个数在于平衡cpu性能和物理模拟精确度之间权衡.        this.space.iterations = 60;        设置空间的重力向量        this.space.gravity = cp.v(0,-500);         休眠临界时间        this.space.sleepTimeThreshold = 0.5;        this.space.collisionSlop = 0.5;        this.addFloor();        this.adDWalls();        var wIDth = 50;        var height = var mass = wIDth * height * 1/1000;        var rock = this.space.addBody(new cp.Body(mass,cp.momentForBox(mass,wIDth,height)));        rock.setPos(cp.v(500,100));        rock.setAngle(1);        var shape = this.space.addShape(new cp.BoxShape(rock,height));        shape.setFriction(0.3);        shape.setElasticity(0.3);            var radius = 20;            mass = 3;            var body = new cp.Body(mass,cp.momentForCircle(mass,radius,cp.v(0))));            body.setPos(cp.v(200,(2 * radius + 5)));            var circle = new cp.CircleShape(body,128); line-height:1.5!important">0)));            circle.setElasticity(0.8);            circle.setFriction(1);        var ramp = new cp.SegmentShape(this.space.staticBody,128); line-height:1.5!important">100,128); line-height:1.5!important">100),128); line-height:1.5!important">300,128); line-height:1.5!important">200),128); line-height:1.5!important">10));        ramp.setElasticity(1);  d性        ramp.setFriction( 摩擦        ramp.setLayers(NOT_GRABABLE_MASK);        var sprite = this.createPhysicssprite(cc.p(400,128); line-height:1.5!important">200));        this.addChild(sprite);    },addFloor:function() {        var floor = 0),128); line-height:1.5!important">640,128); line-height:1.5!important">0));        floor.setElasticity(1);        floor.setFriction(1);        floor.setLayers(NOT_GRABABLE_MASK);    },adDWalls:function() {        var wall1 = 480),128); line-height:1.5!important">0));        wall1.setElasticity(1);        wall1.setFriction(1);        wall1.setLayers(NOT_GRABABLE_MASK);        var wall2 = 0));        wall2.setElasticity(1);        wall2.setFriction(1);        wall2.setLayers(NOT_GRABABLE_MASK);    },createPhysicssprite:function( pos ) {        new cp.Body(1,cp.momentForBox(48,128); line-height:1.5!important">108) );        body.setPos( pos );        this.space.addBody( body );        new cp.BoxShape( body,128); line-height:1.5!important">108);        shape.setElasticity( 0.5 );        shape.setFriction( 0.5 );        this.space.addShape( shape );        var sprite = cc.Physicssprite.create(res.b_ball_01);        sprite.setbody( body );        return sprite;    }