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#ifndef PXV_DYNAMICS_H
#define PXV_DYNAMICS_H

#include "foundation/PxVec3.h"
#include "foundation/PxQuat.h"
#include "foundation/PxTransform.h"
#include "foundation/PxSimpleTypes.h"
#include "PsIntrinsics.h"
#include "PxRigidDynamic.h"

namespace physx
{

/*!
\file
Dynamics interface.
*/

struct PxsRigidCore
{
//= ATTENTION! =====================================================================================
// Changing the data layout of this class breaks the binary serialization format.  See comments for 
// PX_BINARY_SERIAL_VERSION.  If a modification is required, please adjust the getBinaryMetaData 
// function.  If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
// accordingly.
//==================================================================================================

	PxsRigidCore() : mFlags(0), mIdtBody2Actor(0), solverIterationCounts(0)	{}
	PxsRigidCore(const PxEMPTY) : mFlags(PxEmpty)							{}

	PX_ALIGN_PREFIX(16)
	PxTransform			body2World PX_ALIGN_SUFFIX(16);
	PxRigidBodyFlags	mFlags;					// API body flags
	PxU8				mIdtBody2Actor;			// PT: true if PxsBodyCore::body2Actor is identity
	PxU16				solverIterationCounts;	//vel iters are in low word and pos iters in high word.

	PX_FORCE_INLINE	PxU32 isKinematic() const
	{
		return mFlags & PxRigidBodyFlag::eKINEMATIC;
	}

	PX_FORCE_INLINE PxU32 hasCCD() const
	{
		return mFlags & PxRigidBodyFlag::eENABLE_CCD;
	}

	PX_FORCE_INLINE	PxU32 hasCCDFriction() const
	{
		return mFlags & PxRigidBodyFlag::eENABLE_CCD_FRICTION;
	}
};
PX_COMPILE_TIME_ASSERT(sizeof(PxsRigidCore) == 32);

struct PxsBodyCore: public PxsRigidCore
{
//= ATTENTION! =====================================================================================
// Changing the data layout of this class breaks the binary serialization format.  See comments for 
// PX_BINARY_SERIAL_VERSION.  If a modification is required, please adjust the getBinaryMetaData 
// function.  If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
// accordingly.
//==================================================================================================

	PxsBodyCore() : PxsRigidCore() { kinematicLink = PxU8(0); }
	PxsBodyCore(const PxEMPTY) : PxsRigidCore(PxEmpty)		{}

	PX_FORCE_INLINE	const PxTransform& getBody2Actor()	const	{ return body2Actor;	}
	PX_FORCE_INLINE	void setBody2Actor(const PxTransform& t)
	{
		mIdtBody2Actor = PxU8(t.p.isZero() && t.q.isIdentity());

		body2Actor = t;
	}
	protected:
	PxTransform				body2Actor;
	public:
	PxReal					ccdAdvanceCoefficient;	//64

	PxVec3					linearVelocity;
	PxReal					maxPenBias;

	PxVec3					angularVelocity;
	PxReal					contactReportThreshold;	//96
    
	PxReal					maxAngularVelocitySq;
	PxReal					maxLinearVelocitySq;
	PxReal					linearDamping;
	PxReal					angularDamping;			//112

	PxVec3					inverseInertia;
	PxReal					inverseMass;			//128
	
	PxReal					maxContactImpulse;			
	PxReal					sleepThreshold;				   
	PxReal					freezeThreshold;			
	PxReal					wakeCounter;			//144 this is authoritative wakeCounter

	PxReal					solverWakeCounter;		//this is calculated by the solver when it performs sleepCheck. It is committed to wakeCounter in ScAfterIntegrationTask if the body is still awake.
	PxU32					numCountedInteractions;
	PxU32					numBodyInteractions;	//Used by adaptive force to keep track of the total number of body interactions
	PxU8					isFastMoving;			//This could be a single bit but it's a u8 at the moment for simplicity's sake
	PxU8					disableGravity;			//This could be a single bit but it's a u8 at the moment for simplicity's sake
	PxRigidDynamicLockFlags	lockFlags;				//This is u8. 
	PxU8					kinematicLink;			//160 This indicates whether the articulation link is kinematic link. All fits into 16 byte alignment
	
													// PT: TODO: revisit this / move to PxsCCD.cpp
	PX_FORCE_INLINE	bool	shouldCreateContactReports()	const
	{
		const PxU32* binary = reinterpret_cast<const PxU32*>(&contactReportThreshold);
		return *binary != 0x7f7fffff;	// PX_MAX_REAL
	}

	// PT: moved from Sc::BodyCore ctor - we don't want to duplicate all this in immediate mode
	PX_FORCE_INLINE	void	init(	const PxTransform& bodyPose,
									const PxVec3& inverseInertia_, PxReal inverseMass_,
									PxReal wakeCounter_, PxReal scaleSpeed,
									PxReal linearDamping_, PxReal angularDamping_,
									PxReal maxLinearVelocitySq_, PxReal maxAngularVelocitySq_)
	{
		PX_ASSERT(bodyPose.p.isFinite());
		PX_ASSERT(bodyPose.q.isFinite());

		// PT: TODO: unify naming convention

		// From PxsRigidCore
		body2World				= bodyPose;
		mFlags					= PxRigidBodyFlags();
		solverIterationCounts	= (1 << 8) | 4;

		setBody2Actor(PxTransform(PxIdentity));

		ccdAdvanceCoefficient	= 0.15f;
		linearVelocity			= PxVec3(0.0f);
		maxPenBias				= -1e32f;//-PX_MAX_F32;
		angularVelocity			= PxVec3(0.0f);
		contactReportThreshold	= PX_MAX_F32;	
		maxAngularVelocitySq	= maxAngularVelocitySq_;
		maxLinearVelocitySq		= maxLinearVelocitySq_;
		linearDamping			= linearDamping_;
		angularDamping			= angularDamping_;
		inverseInertia			= inverseInertia_;
		inverseMass				= inverseMass_;
		maxContactImpulse		= 1e32f;// PX_MAX_F32;
		sleepThreshold			= 5e-5f * scaleSpeed * scaleSpeed;
		freezeThreshold			= 2.5e-5f * scaleSpeed * scaleSpeed;
		wakeCounter				= wakeCounter_;
		// PT: this one is not initialized?
		//solverWakeCounter
		// PT: these are initialized in BodySim ctor
		//numCountedInteractions;
		//numBodyInteractions;
		isFastMoving			= false;
		disableGravity			= false;
		lockFlags				= PxRigidDynamicLockFlags(0);
	}
};

PX_COMPILE_TIME_ASSERT(sizeof(PxsBodyCore) == 160);

}

#endif
