--- /dev/null
+/*
+* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
+*
+* This software is provided 'as-is', without any express or implied
+* warranty. In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef B2_CONTACT_MANAGER_H
+#define B2_CONTACT_MANAGER_H
+
+#include "../Collision/b2BroadPhase.h"
+#include "../Dynamics/Contacts/b2NullContact.h"
+
+class b2World;
+class b2Contact;
+struct b2TimeStep;
+
+// Delegate of b2World.
+class b2ContactManager : public b2PairCallback
+{
+public:
+ b2ContactManager() : m_world(NULL), m_destroyImmediate(false) {}
+
+ // Implements PairCallback
+ void* PairAdded(void* proxyUserData1, void* proxyUserData2);
+
+ // Implements PairCallback
+ void PairRemoved(void* proxyUserData1, void* proxyUserData2, void* pairUserData);
+
+ void Destroy(b2Contact* c);
+
+ void Collide();
+
+ b2World* m_world;
+
+ // This lets us provide broadphase proxy pair user data for
+ // contacts that shouldn't exist.
+ b2NullContact m_nullContact;
+
+ bool m_destroyImmediate;
+};
+
+#endif