feat(physics): wire physx sdk into build

engine/third_party/physx/include/foundation/PxHash.h

@@ -0,0 +1,163 @@
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2025 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#ifndef PX_HASH_H
+#define PX_HASH_H
+
+#include "foundation/PxBasicTemplates.h"
+#include "foundation/PxString.h"
+
+#if PX_VC
+#pragma warning(push)
+#pragma warning(disable : 4302)
+#endif
+
+#if PX_LINUX
+#include "foundation/PxSimpleTypes.h"
+#endif
+
+/*!
+Central definition of hash functions
+*/
+
+#if !PX_DOXYGEN
+namespace physx
+{
+#endif
+// Hash functions
+
+// Thomas Wang's 32 bit mix
+// http://www.cris.com/~Ttwang/tech/inthash.htm
+PX_FORCE_INLINE uint32_t PxComputeHash(const uint32_t key)
+{
+	uint32_t k = key;
+	k += ~(k << 15);
+	k ^= (k >> 10);
+	k += (k << 3);
+	k ^= (k >> 6);
+	k += ~(k << 11);
+	k ^= (k >> 16);
+	return uint32_t(k);
+}
+
+PX_FORCE_INLINE uint32_t PxComputeHash(const int32_t key)
+{
+	return PxComputeHash(uint32_t(key));
+}
+
+// Thomas Wang's 64 bit mix
+// http://www.cris.com/~Ttwang/tech/inthash.htm
+PX_FORCE_INLINE uint32_t PxComputeHash(const uint64_t key)
+{
+	uint64_t k = key;
+	k += ~(k << 32);
+	k ^= (k >> 22);
+	k += ~(k << 13);
+	k ^= (k >> 8);
+	k += (k << 3);
+	k ^= (k >> 15);
+	k += ~(k << 27);
+	k ^= (k >> 31);
+	return uint32_t(UINT32_MAX & k);
+}
+
+#if PX_APPLE_FAMILY
+// hash for size_t, to make gcc happy
+PX_INLINE uint32_t PxComputeHash(const size_t key)
+{
+#if PX_P64_FAMILY
+	return PxComputeHash(uint64_t(key));
+#else
+	return PxComputeHash(uint32_t(key));
+#endif
+}
+#endif
+
+// Hash function for pointers
+PX_INLINE uint32_t PxComputeHash(const void* ptr)
+{
+#if PX_P64_FAMILY
+	return PxComputeHash(uint64_t(ptr));
+#else
+	return PxComputeHash(uint32_t(UINT32_MAX & size_t(ptr)));
+#endif
+}
+
+// Hash function for pairs
+template <typename F, typename S>
+PX_INLINE uint32_t PxComputeHash(const PxPair<F, S>& p)
+{
+	uint32_t seed = 0x876543;
+	uint32_t m = 1000007;
+	return PxComputeHash(p.second) ^ (m * (PxComputeHash(p.first) ^ (m * seed)));
+}
+
+// hash object for hash map template parameter
+template <class Key>
+struct PxHash
+{
+	uint32_t operator()(const Key& k) const
+	{
+		return PxComputeHash(k);
+	}
+	bool equal(const Key& k0, const Key& k1) const
+	{
+		return k0 == k1;
+	}
+};
+
+// specialization for strings
+template <>
+struct PxHash<const char*>
+{
+  public:
+	uint32_t operator()(const char* _string) const
+	{
+		// "DJB" string hash
+		const uint8_t* string = reinterpret_cast<const uint8_t*>(_string);
+		uint32_t h = 5381;
+		for(const uint8_t* ptr = string; *ptr; ptr++)
+			h = ((h << 5) + h) ^ uint32_t(*ptr);
+		return h;
+	}
+	bool equal(const char* string0, const char* string1) const
+	{
+		return !Pxstrcmp(string0, string1);
+	}
+};
+
+#if !PX_DOXYGEN
+} // namespace physx
+#endif
+
+#if PX_VC
+#pragma warning(pop)
+#endif
+
+#endif
+