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physx/snippets/snippetvehiclecommon/SnippetVehicleWheelQueryResult.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_WHEELQUERYRESULT_H
+#define SNIPPET_VEHICLE_WHEELQUERYRESULT_H
+
+#include "PxPhysicsAPI.h"
+#include <new>
+
+namespace snippetvehicle
+{
+using namespace physx;
+
+//Data structure for quick setup of wheel query data structures.
+class VehicleWheelQueryResults
+{
+public:
+
+	VehicleWheelQueryResults()
+		: mVehicleWheelQueryResults(NULL)
+	{
+	}
+
+	~VehicleWheelQueryResults()
+	{
+	}
+
+	//Allocate wheel results for up to maxNumVehicles with up to maxNumWheelsPerVehicle.
+	static VehicleWheelQueryResults* allocate(const PxU32 maxNumVehicles, const PxU32 maxNumWheelsPerVehicle, PxAllocatorCallback& allocator)
+	{
+		const PxU32 byteSize = sizeof(VehicleWheelQueryResults) + sizeof(PxVehicleWheelQueryResult)*maxNumVehicles + sizeof(PxWheelQueryResult)*maxNumWheelsPerVehicle*maxNumVehicles;
+
+		PxU8* buffer = static_cast<PxU8*>(allocator.allocate(byteSize, NULL, NULL, 0));
+
+		VehicleWheelQueryResults* vwqr = reinterpret_cast<VehicleWheelQueryResults*>(buffer);
+		buffer += sizeof(VehicleWheelQueryResults);
+
+		vwqr->mVehicleWheelQueryResults = reinterpret_cast<PxVehicleWheelQueryResult*>(buffer);
+		buffer+=sizeof(PxVehicleWheelQueryResult)*maxNumVehicles;
+
+		for(PxU32 i=0;i<maxNumVehicles;i++)
+		{
+			new(buffer) PxWheelQueryResult();
+			vwqr->mVehicleWheelQueryResults[i].wheelQueryResults = reinterpret_cast<PxWheelQueryResult*>(buffer);
+			vwqr->mVehicleWheelQueryResults[i].nbWheelQueryResults = maxNumWheelsPerVehicle;
+			buffer += sizeof(PxWheelQueryResult)*maxNumWheelsPerVehicle;
+		}
+
+		return vwqr;
+	}
+
+	//Free allocated buffer for scene queries of suspension raycasts.
+	void free(PxAllocatorCallback& allocator)
+	{
+		allocator.deallocate(this);
+	}
+
+	//Return the PxVehicleWheelQueryResult for a vehicle specified by an index.
+	PxVehicleWheelQueryResult* getVehicleWheelQueryResults(const PxU32 id)
+	{
+		return (mVehicleWheelQueryResults + id);
+	}
+
+private:
+
+	PxVehicleWheelQueryResult* mVehicleWheelQueryResults;
+};
+
+} // namespace snippetvehicle
+
+#endif //SNIPPET_VEHICLE_WHEELQUERYRESULT_H