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b2WorldCallbacks.h

    00001 /*
    00002 * Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
    00003 *
    00004 * This software is provided 'as-is', without any express or implied
    00005 * warranty.  In no event will the authors be held liable for any damages
    00006 * arising from the use of this software.
    00007 * Permission is granted to anyone to use this software for any purpose,
    00008 * including commercial applications, and to alter it and redistribute it
    00009 * freely, subject to the following restrictions:
    00010 * 1. The origin of this software must not be misrepresented; you must not
    00011 * claim that you wrote the original software. If you use this software
    00012 * in a product, an acknowledgment in the product documentation would be
    00013 * appreciated but is not required.
    00014 * 2. Altered source versions must be plainly marked as such, and must not be
    00015 * misrepresented as being the original software.
    00016 * 3. This notice may not be removed or altered from any source distribution.
    00017 */
    00018
    00019 #ifndef B2_WORLD_CALLBACKS_H
    00020 #define B2_WORLD_CALLBACKS_H
    00021
    00022 #include <Box2D/Common/b2Settings.h>
    00023
    00024 struct b2Vec2;
    00025 struct b2Transform;
    00026 class b2Fixture;
    00027 class b2Body;
    00028 class b2Joint;
    00029 class b2Contact;
    00030 struct b2ContactResult;
    00031 struct b2Manifold;
    00032
    00036 class b2DestructionListener
    00037 {
    00038 public:
    00039         virtual ~b2DestructionListener() {}
    00040
    00043         virtual void SayGoodbye(b2Joint* joint) = 0;
    00044
    00047         virtual void SayGoodbye(b2Fixture* fixture) = 0;
    00048 };
    00049
    00052 class b2ContactFilter
    00053 {
    00054 public:
    00055         virtual ~b2ContactFilter() {}
    00056
    00059         virtual bool ShouldCollide(b2Fixture* fixtureA, b2Fixture* fixtureB);
    00060 };
    00061
    00065 struct b2ContactImpulse
    00066 {
    00067         float32 normalImpulses[b2_maxManifoldPoints];
    00068         float32 tangentImpulses[b2_maxManifoldPoints];
    00069         int32 count;
    00070 };
    00071
    00081 class b2ContactListener
    00082 {
    00083 public:
    00084         virtual ~b2ContactListener() {}
    00085
    00087         virtual void BeginContact(b2Contact* contact) { B2_NOT_USED(contact); }
    00088
    00090         virtual void EndContact(b2Contact* contact) { B2_NOT_USED(contact); }
    00091
    00102         virtual void PreSolve(b2Contact* contact, const b2Manifold* oldManifold)
    00103         {
    00104                 B2_NOT_USED(contact);
    00105                 B2_NOT_USED(oldManifold);
    00106         }
    00107
    00114         virtual void PostSolve(b2Contact* contact, const b2ContactImpulse* impulse)
    00115         {
    00116                 B2_NOT_USED(contact);
    00117                 B2_NOT_USED(impulse);
    00118         }
    00119 };
    00120
    00123 class b2QueryCallback
    00124 {
    00125 public:
    00126         virtual ~b2QueryCallback() {}
    00127
    00130         virtual bool ReportFixture(b2Fixture* fixture) = 0;
    00131 };
    00132
    00135 class b2RayCastCallback
    00136 {
    00137 public:
    00138         virtual ~b2RayCastCallback() {}
    00139
    00151         virtual float32 ReportFixture(  b2Fixture* fixture, const b2Vec2& point,
    00152                                                                         const b2Vec2& normal, float32 fraction) = 0;
    00153 };
    00154
    00155 #endif

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