initial commit, 4.5 stable

thirdparty/jolt_physics/Jolt/Physics/Body/BodyPair.h

@@ -0,0 +1,36 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#include <Jolt/Physics/Body/BodyID.h>
+#include <Jolt/Core/HashCombine.h>
+
+JPH_NAMESPACE_BEGIN
+
+/// Structure that holds a body pair
+struct alignas(uint64) BodyPair
+{
+	JPH_OVERRIDE_NEW_DELETE
+
+	/// Constructor
+							BodyPair() = default;
+							BodyPair(BodyID inA, BodyID inB)							: mBodyA(inA), mBodyB(inB) { }
+
+	/// Equals operator
+	bool					operator == (const BodyPair &inRHS) const					{ return *reinterpret_cast<const uint64 *>(this) == *reinterpret_cast<const uint64 *>(&inRHS); }
+
+	/// Smaller than operator, used for consistently ordering body pairs
+	bool					operator < (const BodyPair &inRHS) const					{ return *reinterpret_cast<const uint64 *>(this) < *reinterpret_cast<const uint64 *>(&inRHS); }
+
+	/// Get the hash value of this object
+	uint64					GetHash() const												{ return Hash64(*reinterpret_cast<const uint64 *>(this)); }
+
+	BodyID					mBodyA;
+	BodyID					mBodyB;
+};
+
+static_assert(sizeof(BodyPair) == sizeof(uint64), "Mismatch in class size");
+
+JPH_NAMESPACE_END