P2.JS之距离约束(DistanceConstraint)备忘

 1 //以下是地面和墙壁的代码
 2 //下
 3 var body = new p2.Body({ mass: 0, position: [0, -5]});
 4 var shape = new p2.Plane();
 5 body.addShape(shape);
 6 world.addBody(body);
 7 
 8 //右
 9 body = new p2.Body({ angle: Math.PI / 2, mass: 0, position: [10, 0]});
10 body.addShape(shape);
11 world.addBody(body);
12 
13 //左
14 body = new p2.Body({ angle: -Math.PI / 2, mass: 0, position: [-10, 0]});
15 body.addShape(shape);
16 world.addBody(body);
17 
18 //以下是将两个小球进行距离约束的代码
19  var constraint = new p2.DistanceConstraint(circle1, circle2, {
20     distance: 3,
21     localAnchorA: [0, 0],
22     localAnchorB: [0, 0],
23     maxForce: Math.MAX_VALUE
24 });
25 world.addConstraint(constraint);
26 
27 constraint.collideConnected = true;
28 constraint.lowerLimitEnabled = true;
29 constraint.upperLimitEnabled = true;
30 constraint.lowerLimit = 2.5;
31 constraint.upperLimit = 4;