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C-/C++-Quelltext

#pragma once
#include "Box2D\Box2D.h"

class CContactListener : public b2ContactListener
{

public:
    CContactListener() {};
    ~CContactListener() {};

    void BeginContact(b2Contact* contact) ;
    void EndContact(b2Contact* contact);

};

C-/C++-Quelltext

#include "ContactListener.hpp"


void CContactListener::BeginContact(b2Contact * contact)
{
    printf("Kollision");
}

void CContactListener::EndContact(b2Contact * contact)
{
}

C-/C++-Quelltext

World = new b2World(b2Vec2(0.f, 0.f));
    CContactListener ContactListener;
    World->SetContactListener(&ContactListener);

C-/C++-Quelltext

// Update the contact manifold and touching status.
// Note: do not assume the fixture AABBs are overlapping or are valid.
void b2Contact::Update(b2ContactListener* listener)
{
    //...

    if (wasTouching == false && touching == true && listener)
    {
        listener->BeginContact(this); // Hier soll der Fehler sein!
    }

    //...
}