node.js - Box2dWeb 身体不碰撞

Question

我已经在 Node.js 服务器中实现了 Box2dWeb，除了冲突之外一切正常。当有 2 个玩家连接时，他们的身体不会发生碰撞 - 只是互相穿过。这是玩家身体创建代码：

//World creation
var world = new b2World(new b2Vec2(0, 0));
//Body+Fixture creation
var bodyDef = new b2BodyDef();
bodyDef.type = b2Body.b2_dynamicBody;
bodyDef.position.x = 100;
bodyDef.position.y = 100;
bodyDef.linearDamping = 5;
bodyDef.angularDamping = 1;

var fixDef = new b2FixtureDef();
fixDef.density = 0.001;
fixDef.friction = 1;
fixDef.restitution = 1;
fixDef.shape = new b2CircleShape;
fixDef.shape.SetRadius(8);

var body = world.CreateBody(bodyDef);
body.CreateFixture(fixDef);

很感谢任何形式的帮助！

编辑：我添加了这段代码：

var listener = new Box2D.Dynamics.b2ContactListener;
listener.BeginContact = function(contact) {
    console.log(contact.GetFixtureA().GetBody().GetUserData());
}
world.SetContactListener(listener);

一旦身体发生碰撞，我会在控制台中得到“null”。

Answer 1

好的，这很简单，正如我所期望的那样。我将代码更改为：

this.world.Step(deltaTime);

至

this.world.Step(deltaTime, 10, 10);