hkpVehicleDefaultTransmission.h
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上传日期:2020-08-09
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其他游戏
开发平台:
Visual C++
- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HKVEHICLE_TRANSMISSION_DEFAULT_hkVehicleDefaultTransmission_XML_H
- #define HKVEHICLE_TRANSMISSION_DEFAULT_hkVehicleDefaultTransmission_XML_H
- #include <Physics/Vehicle/Transmission/hkpVehicleTransmission.h>
- /// The hkpVehicleDefaultTransmission class implements an automatic transmission, with n
- /// gears and a reverse gear, different torque ratios for each wheel (so FWD - RWD -
- /// AWD can be specified) and clutch delay.
- class hkpVehicleDefaultTransmission : public hkpVehicleTransmission
- {
- public:
- HK_DECLARE_REFLECTION();
- /// Default constructor
- hkpVehicleDefaultTransmission();
- //
- // Methods
- //
- /// Calculates information about the effects of transmission on the vehicle.
- virtual void calcTransmission(const hkReal deltaTime, const hkpVehicleInstance* vehicle, TransmissionOutput& TransmissionOutputOut);
- /// A utility function to calculate the primaryTransmissionRatio for a vehicle. The answer
- /// returned is intended only as a guideline. It will probably need to be tweaked a little
- /// to give the exact desired performance. See the "Tuning tips" of the Havok User Guide
- /// for more details.
- /// The formula is copied here:
- /// TopSpeedCar[m/s] = TopSpeedOfCar[mph] * 1.605 / 3.6
- /// MaxWheelAngularVel = TopSpeedCar[m/s] / wheelRadius
- /// MaxWheelRPM = MaxWheelAngularVel * 60 / 2 * PI
- /// PrimirayTransmissionRatio = maxEngineRPM / MaxWheelRPM
- static hkReal HK_CALL calculatePrimaryTransmissionRatio( const hkReal vehicleTopSpeed,
- const hkReal wheelRadius,
- const hkReal maxEngineRpm,
- const hkReal topGearRatio );
- //
- // The following functions are all used by calcTransmission.
- //
- public:
- /// Calculates the transmitted torque.
- virtual hkReal calcMainTransmittedTorque(const hkpVehicleInstance* vehicle, TransmissionOutput& transmissionOut) const;
- /// Calculates the transmission RPM.
- virtual hkReal calcTransmissionRPM(const hkpVehicleInstance* vehicle, TransmissionOutput& transmissionOut) const;
- /// Calculates if the vehicle is currently reversing.
- virtual hkBool calcIsReversing(const hkpVehicleInstance* vehicle, TransmissionOutput& transmissionOut) const;
- /// Calculates the current gear.
- virtual void updateCurrentGear( const hkReal deltaTime, const hkpVehicleInstance* vehicle, TransmissionOutput& transmissionOut );
- /// Returns the gear ratio of the current gear.
- virtual hkReal getCurrentRatio(const hkpVehicleInstance* vehicle, TransmissionOutput& transmissionOut) const;
- //
- // Members
- //
- public:
- /// The RPM of the engine the transmission shifts down.
- hkReal m_downshiftRPM;
- /// The RPM of the engine the transmission shifts up. Note: m_upshiftRpm >
- /// m_downshiftRpm.
- hkReal m_upshiftRPM;
- /// An extra factor to the gear ratio.
- hkReal m_primaryTransmissionRatio;
- /// The time needed [seconds] to shift a gear.
- hkReal m_clutchDelayTime;
- /// The back gear ratio.
- hkReal m_reverseGearRatio;
- /// The ratio of the forward gears.
- hkArray<hkReal> m_gearsRatio;
- /// The transmission ratio for every wheel
- hkArray<hkReal> m_wheelsTorqueRatio;
- protected:
- #if defined HK_DEBUG
- // Check that the sum of all the wheel torque ratios equals 1.0f. Fire a warning if it does not.
- void checkTotalWheelTorqueRatio( const hkpVehicleInstance* vehicle ) const;
- #endif // #if defined HK_DEBUG
- public:
- hkpVehicleDefaultTransmission(hkFinishLoadedObjectFlag f) :
- hkpVehicleTransmission(f), m_gearsRatio(f), m_wheelsTorqueRatio(f) { }
- };
- #endif // HKVEHICLE_TRANSMISSION_DEFAULT_hkVehicleDefaultTransmission_XML_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */