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如何在C中使用Box2D检测碰撞++
原标题:How to detect collisions using Box2D in C++

我正在学习如何使用box2d,但我根本不明白碰撞是如何工作的。有人能对他们的工作方式做一个深入的解释吗。我看过联系人的文档,但我只是模糊地理解它们,不知道如何实际使用它们。

问题回答

其想法是,您可以通过继承b2ContactListener。如下所示:

class MyListener : public b2ContactListener {
    virtual void Add (b2ContactPoint *point);
    virtual void Persist (b2ContactPoint *point);
    virtual void Remove (b2ContactPoint *point);
    virtual void Result (b2ContactPoint *point);
};

MyListener has to define these functions. To start, you can just have them print some debug text. You then tell Box2D that you want to use this listener, like this:

MyListener listener;
yourB2World->SetContactListener(&listener);

现在,侦听器将获得每次碰撞的回调,并在b2触点





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