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physx/snippets/snippetvehiclecommon/SnippetVehicleConcurrency.h

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+//
+// 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) 2008-2021 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 SNIPPET_VEHICLE_CONCURRENCY_H
+#define SNIPPET_VEHICLE_CONCURRENCY_H
+
+#include "PxPhysicsAPI.h"
+#include <new>
+
+namespace snippetvehicle
+{
+using namespace physx;
+
+//Data structure for quick setup of wheel query data structures.
+class VehicleConcurrency
+{
+public:
+
+	VehicleConcurrency()
+		: mMaxNumVehicles(0),
+		  mMaxNumWheelsPerVehicle(0),
+		  mVehicleConcurrentUpdates(NULL)
+	{
+	}
+
+	~VehicleConcurrency()
+	{
+	}
+
+	static VehicleConcurrency* allocate(const PxU32 maxNumVehicles, const PxU32 maxNumWheelsPerVehicle, PxAllocatorCallback& allocator)
+	{
+		const PxU32 byteSize = 
+			sizeof(VehicleConcurrency) + 
+			sizeof(PxVehicleConcurrentUpdateData)*maxNumVehicles + 
+			sizeof(PxVehicleWheelConcurrentUpdateData)*maxNumWheelsPerVehicle*maxNumVehicles;
+
+		PxU8* buffer = static_cast<PxU8*>(allocator.allocate(byteSize, NULL, NULL, 0));
+
+		VehicleConcurrency* vc = reinterpret_cast<VehicleConcurrency*>(buffer);
+		new(vc) VehicleConcurrency();
+		buffer += sizeof(VehicleConcurrency);
+
+		vc->mMaxNumVehicles = maxNumVehicles;
+		vc->mMaxNumWheelsPerVehicle = maxNumWheelsPerVehicle;
+
+		vc->mVehicleConcurrentUpdates = reinterpret_cast<PxVehicleConcurrentUpdateData*>(buffer);
+		buffer += sizeof(PxVehicleConcurrentUpdateData)*maxNumVehicles;
+
+		for(PxU32 i=0;i<maxNumVehicles;i++)
+		{
+			new(vc->mVehicleConcurrentUpdates + i) PxVehicleConcurrentUpdateData();
+			
+			vc->mVehicleConcurrentUpdates[i].nbConcurrentWheelUpdates = maxNumWheelsPerVehicle;
+			
+			vc->mVehicleConcurrentUpdates[i].concurrentWheelUpdates = reinterpret_cast<PxVehicleWheelConcurrentUpdateData*>(buffer);
+			buffer += sizeof(PxVehicleWheelConcurrentUpdateData)*maxNumWheelsPerVehicle;
+
+			for(PxU32 j = 0; j < maxNumWheelsPerVehicle; j++)
+			{
+				new(vc->mVehicleConcurrentUpdates[i].concurrentWheelUpdates + j) PxVehicleWheelConcurrentUpdateData();
+			}
+
+		}
+
+
+		return vc;
+	}
+
+	//Free allocated buffer for scene queries of suspension raycasts.
+	void free(PxAllocatorCallback& allocator)
+	{
+		allocator.deallocate(this);
+	}
+
+	//Return the PxVehicleConcurrentUpdate for a vehicle specified by an index.
+	PxVehicleConcurrentUpdateData* getVehicleConcurrentUpdate(const PxU32 id)
+	{
+		return (mVehicleConcurrentUpdates + id);
+	}
+
+	//Return the entire array of PxVehicleConcurrentUpdates
+	PxVehicleConcurrentUpdateData* getVehicleConcurrentUpdateBuffer()
+	{
+		return mVehicleConcurrentUpdates;
+	}
+
+private:
+
+	PxU32 mMaxNumVehicles;
+	PxU32 mMaxNumWheelsPerVehicle;
+	PxVehicleConcurrentUpdateData* mVehicleConcurrentUpdates;
+};
+
+} // namespace snippetvehicle
+
+#endif //SNIPPET_VEHICLE_CONCURRENCY_H