hkpPairCollisionFilter.h
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上传日期:2020-08-09
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其他游戏
开发平台:
Visual C++
- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HK_COLLIDE2_PAIR_COLLISION_FILTER_H
- #define HK_COLLIDE2_PAIR_COLLISION_FILTER_H
- #include <Common/Base/Container/PointerMap/hkPointerMapBase.h>
- #include <Physics/Collide/Filter/hkpCollisionFilter.h>
- class hkpEntity;
- /// A simple pairwise collision filter that allows to enable/disable collisions between two dedicated entities.
- /// Each pair maintains a counter, i.e. you have to 'enable' as many times as 'disable' to actually re-enable
- /// collision detection between a pair of entities.
- class hkpPairCollisionFilter : public hkpCollisionFilter
- {
- public:
- #if HK_POINTER_SIZE == 4
- typedef hkUint64 PairFilterKey;
- #else
- struct PairFilterKey
- {
- hkUint64 m_a;
- hkUint64 m_b;
- };
- struct PairFilterPointerMapOperations
- {
- inline unsigned hash( PairFilterKey key, unsigned modulus )
- {
- // using Knuth's multiplicative golden hash
- // the lowest four bits on the address are ignored as most addresses will be 16-byte aligned
- // finally we truncate the hash value as hkPointerMap can only handle 32 bit
- hkUint64 combinedKey = (key.m_a + (key.m_b << 28)) >> 4;
- return (unsigned)(((combinedKey * 0x9e3779b97f4a7c13LL) & modulus) & 0xffffffff);
- }
- inline void invalidate( PairFilterKey& key )
- {
- key.m_a = 0xffffffffffffffff;
- key.m_b = 0xffffffffffffffff;
- }
- inline hkBool32 isValid( PairFilterKey key )
- {
- return key.m_a != 0xffffffffffffffff && key.m_b != 0xffffffffffffffff;
- }
- inline hkBool32 equal( PairFilterKey key0, PairFilterKey key1 )
- {
- return key0.m_a == key1.m_a && key0.m_b == key1.m_b;
- }
- };
- #endif
- public:
- //HK_DECLARE_REFLECTION();
- hkpPairCollisionFilter(const hkpCollisionFilter* childFilter = HK_NULL);
- hkpPairCollisionFilter( class hkFinishLoadedObjectFlag flag ) {}
- ~hkpPairCollisionFilter();
- /// Enable collisions between entity A and entity B. Returns the number of times the pair is still 'disabled'.
- /// ###ACCESS_CHECKS###( [entityA->getWorld(),HK_ACCESS_RW] );
- int enableCollisionsBetween(const hkpEntity* entityA, const hkpEntity* entityB);
- /// Disable collisions between entity A and entity B. Returns the number of times the pair is now 'disabled'.
- /// ###ACCESS_CHECKS###( [entityA->getWorld(),HK_ACCESS_RW] );
- int disableCollisionsBetween(const hkpEntity* entityA, const hkpEntity* entityB);
- /// This implementation of isCollisionEnabled() checks if the two supplied entities are allowed to collide or not.
- hkBool isCollisionEnabled( const hkpEntity* entityA, const hkpEntity* entityB ) const;
- /// This implementation of isCollisionEnabled() simply forwards to the entity/entity variant.
- virtual hkBool isCollisionEnabled( const hkpCollidable& collidableA, const hkpCollidable& collidableB ) const;
- /// This implementation of isCollisionEnabled() simply forwards to the entity/entity variant.
- virtual hkBool isCollisionEnabled( const hkpCollisionInput& input, const hkpCdBody& a, const hkpCdBody& b, const HK_SHAPE_CONTAINER& bContainer, hkpShapeKey bKey ) const;
- // hkpShapeCollectionFilter interface forwarding
- virtual hkBool isCollisionEnabled( const hkpCollisionInput& input, const hkpCdBody& collectionBodyA, const hkpCdBody& collectionBodyB, const HK_SHAPE_CONTAINER& containerShapeA, const HK_SHAPE_CONTAINER& containerShapeB, hkpShapeKey keyA, hkpShapeKey keyB ) const;
- /// This implementation of isCollisionEnabled() will always return true.
- virtual hkBool isCollisionEnabled( const hkpShapeRayCastInput& aInput, const hkpShape& bShape, const HK_SHAPE_CONTAINER& bContainer, hkpShapeKey bKey ) const;
- /// This implementation of isCollisionEnabled() will always return true.
- virtual hkBool isCollisionEnabled( const hkpWorldRayCastInput& inputA, const hkpCollidable& collidableB ) const;
- private:
- // Constructs the 64bit hash key from the entities' pointers.
- HK_FORCE_INLINE void calcKey(const hkpEntity* entityA, const hkpEntity* entityB, PairFilterKey& keyOut) const;
- public:
- #if HK_POINTER_SIZE == 4
- class hkPointerMapBase<PairFilterKey> m_disabledPairs; //+nosave
- #else
- class hkPointerMapBase<PairFilterKey, hkUint64, PairFilterPointerMapOperations> m_disabledPairs; //+nosave
- #endif
- const hkpCollisionFilter* m_childFilter;
- };
- #include <Physics/Utilities/Collide/Filter/pair/hkpPairCollisionFilter.inl>
- #endif // HK_COLLIDE2_PAIR_COLLISION_FILTER_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */