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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  

#include "PxvGlobals.h"
#include "PxsContext.h"
#include "PxcContactMethodImpl.h"
#include "GuContactMethodImpl.h"


#if PX_SUPPORT_GPU_PHYSX
#include "PxPhysXGpu.h"

physx::PxPhysXGpu* gPxPhysXGpu;
#endif

namespace physx
{

PxvOffsetTable gPxvOffsetTable;

bool PxcLegacyContactSphereHeightField	(GU_CONTACT_METHOD_ARGS);
bool PxcLegacyContactCapsuleHeightField	(GU_CONTACT_METHOD_ARGS);
bool PxcLegacyContactBoxHeightField		(GU_CONTACT_METHOD_ARGS);
bool PxcLegacyContactConvexHeightField	(GU_CONTACT_METHOD_ARGS);

bool PxcPCMContactSphereHeightField		(GU_CONTACT_METHOD_ARGS);
bool PxcPCMContactCapsuleHeightField	(GU_CONTACT_METHOD_ARGS);
bool PxcPCMContactBoxHeightField		(GU_CONTACT_METHOD_ARGS);
bool PxcPCMContactConvexHeightField		(GU_CONTACT_METHOD_ARGS);

bool PxcContactSphereHeightField		(GU_CONTACT_METHOD_ARGS);
bool PxcContactCapsuleHeightField		(GU_CONTACT_METHOD_ARGS);
bool PxcContactBoxHeightField			(GU_CONTACT_METHOD_ARGS);
bool PxcContactConvexHeightField		(GU_CONTACT_METHOD_ARGS);

bool gUnifiedHeightfieldCollision = false;

void PxvRegisterHeightFields()
{
	g_ContactMethodTable[PxGeometryType::eSPHERE][PxGeometryType::eHEIGHTFIELD]			= PxcContactSphereHeightField;
	g_ContactMethodTable[PxGeometryType::eCAPSULE][PxGeometryType::eHEIGHTFIELD]		= PxcContactCapsuleHeightField;
	g_ContactMethodTable[PxGeometryType::eBOX][PxGeometryType::eHEIGHTFIELD]			= PxcContactBoxHeightField;
	g_ContactMethodTable[PxGeometryType::eCONVEXMESH][PxGeometryType::eHEIGHTFIELD]		= PxcContactConvexHeightField;

	g_PCMContactMethodTable[PxGeometryType::eSPHERE][PxGeometryType::eHEIGHTFIELD]		= PxcPCMContactSphereHeightField;
	g_PCMContactMethodTable[PxGeometryType::eCAPSULE][PxGeometryType::eHEIGHTFIELD]		= PxcPCMContactCapsuleHeightField;
	g_PCMContactMethodTable[PxGeometryType::eBOX][PxGeometryType::eHEIGHTFIELD]			= PxcPCMContactBoxHeightField;
	g_PCMContactMethodTable[PxGeometryType::eCONVEXMESH][PxGeometryType::eHEIGHTFIELD]	= PxcPCMContactConvexHeightField;
	gUnifiedHeightfieldCollision = true;
}

void PxvRegisterLegacyHeightFields()
{
	g_ContactMethodTable[PxGeometryType::eSPHERE][PxGeometryType::eHEIGHTFIELD]			= PxcLegacyContactSphereHeightField;
	g_ContactMethodTable[PxGeometryType::eCAPSULE][PxGeometryType::eHEIGHTFIELD]		= PxcLegacyContactCapsuleHeightField;
	g_ContactMethodTable[PxGeometryType::eBOX][PxGeometryType::eHEIGHTFIELD]			= PxcLegacyContactBoxHeightField;
	g_ContactMethodTable[PxGeometryType::eCONVEXMESH][PxGeometryType::eHEIGHTFIELD]		= PxcLegacyContactConvexHeightField;

	g_PCMContactMethodTable[PxGeometryType::eSPHERE][PxGeometryType::eHEIGHTFIELD]		= PxcLegacyContactSphereHeightField;
	g_PCMContactMethodTable[PxGeometryType::eCAPSULE][PxGeometryType::eHEIGHTFIELD]		= PxcLegacyContactCapsuleHeightField;
	g_PCMContactMethodTable[PxGeometryType::eBOX][PxGeometryType::eHEIGHTFIELD]			= PxcLegacyContactBoxHeightField;
	g_PCMContactMethodTable[PxGeometryType::eCONVEXMESH][PxGeometryType::eHEIGHTFIELD]	= PxcLegacyContactConvexHeightField;
	gUnifiedHeightfieldCollision = false;
}

void PxvInit(const PxvOffsetTable& offsetTable)
{
#if PX_SUPPORT_GPU_PHYSX
	gPxPhysXGpu = NULL;
#endif
	gPxvOffsetTable = offsetTable;
}

void PxvTerm()
{
#if PX_SUPPORT_GPU_PHYSX
	if (gPxPhysXGpu)
	{
		gPxPhysXGpu->release();
		gPxPhysXGpu = NULL;
	}
#endif
}

}

#if PX_SUPPORT_GPU_PHYSX
namespace physx
{
	//forward declare stuff from PxPhysXGpuModuleLoader.cpp
	void PxLoadPhysxGPUModule(const char* appGUID);
	typedef physx::PxPhysXGpu* (PxCreatePhysXGpu_FUNC)();
	extern PxCreatePhysXGpu_FUNC* g_PxCreatePhysXGpu_Func;

	PxPhysXGpu* PxvGetPhysXGpu(bool createIfNeeded)
	{
		if (!gPxPhysXGpu && createIfNeeded)
		{
			PxLoadPhysxGPUModule(NULL);
			if (g_PxCreatePhysXGpu_Func)
			{
				gPxPhysXGpu = g_PxCreatePhysXGpu_Func();
			}
		}

		return gPxPhysXGpu;
	}
}
#endif