1 var Fighter = cc.PhysicsSprite.extend({
 2         hitPoints: true,        //当前的生命值
 3         space: null,            //所在物理空间
 4         ctor: function (spriteFrameName, space) {
 5             this._super(spriteFrameName);
 6             this.space = space;
 7
 8             var verts = [
 9                 -94, 31.5,
10                 -52, 64.5,
11                 57, 66.5,
12                 96, 33.5,
13                 0, -80.5];
14
15             this.body = new cp.Body(1, cp.momentForPoly(1, verts, cp.vzero));
16             this.body.data = this;
17             this.space.addBody(this.body);
18
19             var shape = new cp.PolyShape(this.body, verts, cp.vzero);
20             shape.setElasticity(0.5);
21             shape.setFriction(0.5);
22             shape.setCollisionType(Collision_Type.Fighter);
23             this.space.addShape(shape);
24
25             this.hitPoints = Fighter_hitPoints;
26
27             var ps = new cc.ParticleSystem(res.fire_plist);
28             //在飞机下面.
29             ps.x = this.getContentSize().width / 2;
30             ps.y = 0;
31             //ps.setRotation(180.0);
32             ps.setScale(0.5);
33             this.addChild(ps);
34         },
35
36         //重写setPosition
37         setPosition: function (newPosition) {
38
39             var halfWidth = this.getContentSize().width / 2;
40             var halfHeight = this.getContentSize().height / 2;
41             var pos_x = newPosition.x;
42             var pos_y = newPosition.y;
43
44             if (pos_x < halfWidth) {
45                 pos_x = halfWidth;
46             } else if (pos_x > (winSize.width - halfWidth)) {
47                 pos_x = winSize.width - halfWidth;
48             }
49
50             if (pos_y < halfHeight) {
51                 pos_y = halfHeight;
52             } else if (pos_y > (winSize.height - halfHeight)) {
53                 pos_y = winSize.height - halfHeight;
54             }
55
56             this.body.setPos(cc.p(pos_x, pos_y));
57
58         }
59     })  ;