G940LEDControl/LogitechSDK/SteeringWheel/Src/LogiWheel.cpp

/****h* Steering.Wheel.SDK/SteeringWheelSDK[1.00.002]
* NAME
*   Steering Wheel SDK
* COPYRIGHT
*   The Logitech Steering Wheel SDK, including all accompanying
*   documentation, is protected by intellectual property laws. All
*   rights not expressly granted by Logitech are reserved.
* PURPOSE
*   The Steering Wheel SDK is an addition to Microsoft's DirectInput
*   in DirectX. It is aimed at driving games and enables to
*   dramatically shorten development time and improve implementation
*   quality for various types of game controllers (USB/gameport
*   wheels/joysticks/game pads, FF enabled or not). The Steering Wheel
*   SDK has been developed and tested for wheels and joysticks using
*   the Logitech, Microsoft and Immersion drivers. It also works with
*   Logitech rumble pads (it has not been tested with non-Logitech
*   rumble pads). By using the Steering Wheel SDK you have the
*   guarantee that all wheels and joysticks will function
*   flawlessly. No more situations where force feedback in a game
*   behaves very differently from one wheel/joystick to another, which
*   in turn results in user frustration and product returns. The
*   Steering Wheel SDK comes with a very intuitive and easy to use
*   interface which enables to read the wheel/joystick's axes and
*   buttons, and also to create all the force feedback effects that
*   are necessary for a good and complete implementation. See the
*   following files to get started:
*       - readme.txt: tells you how to get started.
*       - SampleInGameImplementation.cpp: shows line by line how to
*         use the Steering Wheel SDK's interface to do a complete
*         implementation for PC game controllers in your driving
*         game. The idea is to develop support for the steering
*         wheel. But if a user plugs in a joystick or game pad he can
*         play as well and get force feedback or rumble. If a joystick
*         is plugged in, all forces generated by the Steering Wheel
*         SDK will be played on the X axis and there will be a
*         constant spring on the Y axis.
*       - SteeringWheelSDK.cpp: demonstrates force feedback
*         effects. Just compile, run and plug in a FF wheel, joystick
*         or rumble pad. See usage at top of SteeringWheelSDK.cpp.
*   For more details see DirectInput documentation which is part of
*   Microsoft's DirectX.
* AUTHOR
*   Christophe Juncker (cj@wingmanteam.com)
******
*/

#include "LogiWheel.h"
#include "LogiWheelUtils.h"

using namespace LogitechSteeringWheel;
using namespace LogitechControllerInput;

DWORD g_forceActuatorsResetTriggered = 0xffffffff;

WNDPROC g_OldWheelWnd;
LRESULT CALLBACK WheelWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

/****f* Steering.Wheel.SDK/Wheel(ControllerInput*.controllerInput)
* NAME
*  Wheel(ControllerInput* controllerInput) -- Does necessary
*  initialization.
* INPUTS
*  controllerInput - handle to instance of Controller Input SDK.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see an
*  example.
******
*/
Wheel::Wheel(ControllerInput* controllerInput)
{
    for (INT index_ = 0; index_ < LogitechSteeringWheel::LG_MAX_CONTROLLERS; index_++)
    {
        InitVars(index_);
    }

    _ASSERT(NULL != controllerInput);
    if (NULL != controllerInput)
    {
        m_controllerInput = controllerInput;
        m_controllerProperties = new ControllerProperties(controllerInput->GetGameHWnd());

        //Replace the Window Procedure and Store the Old Window Procedure
        g_OldWheelWnd = (WNDPROC)(LONG_PTR)GetWindowLongPtr(controllerInput->GetGameHWnd(), GWLP_WNDPROC);
        SetWindowLongPtr(controllerInput->GetGameHWnd(), GWLP_WNDPROC, (__int3264)(LONG_PTR)WheelWindowProc);
    }
}

Wheel::~Wheel()
{
    for (INT index_ = 0; index_ < LogitechSteeringWheel::LG_MAX_CONTROLLERS; index_++)
    {
        if (NULL != m_controllerForce[index_])
        {
            m_controllerForce[index_]->ReleaseEffects();
            delete m_controllerForce[index_];
            m_controllerForce[index_] = NULL;
        }

        // Turn off all LEDs
        PlayLeds(index_, 0.0f, 1.0f, 2.0f);
    }

    if (NULL != m_controllerProperties)
    {
        delete m_controllerProperties;
        m_controllerProperties = NULL;
    }
}

VOID Wheel::InitVars(CONST INT index)
{
    m_isAirborne[index] = FALSE;
    m_damperWasPlaying[index] = FALSE;
    m_springWasPlaying[index] = FALSE;

    m_controllerForce[index] = NULL;

    for (INT jj = 0; jj < LG_NUMBER_FORCE_EFFECTS; jj++)
    {
        m_wasPlayingBeforeAirborne[index][jj] = FALSE;
    }
}

/****f* Steering.Wheel.SDK/Update()
* NAME
*  VOID Wheel::Update() -- keeps forces and controller connections up
*  to date.
* NOTES
*  Must be called every frame.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
VOID Wheel::Update()
{
    _ASSERT(NULL != m_controllerProperties);
    _ASSERT(NULL != m_controllerInput);

    for (INT index_ = 0; index_ < LogitechSteeringWheel::LG_MAX_CONTROLLERS; index_++)
    {
        if (NULL != m_controllerInput && NULL != m_controllerProperties)
        {
            if (m_controllerInput->IsConnected(index_))
            {
                if (NULL == m_controllerForce[index_])
                {
                    m_controllerForce[index_] = new ControllerForceManager();
                    _ASSERT(NULL != m_controllerForce[index_]);
                    if (NULL != m_controllerForce[index_])
                    {
                        m_controllerForce[index_]->SetDeviceHandle(m_controllerInput->GetDeviceHandle(index_));
                    }
                }
            }
            else
            {
                if (NULL != m_controllerForce[index_])
                {
                    m_controllerForce[index_]->ReleaseEffects();
                    delete m_controllerForce[index_];
                    m_controllerForce[index_] = NULL;

                    InitVars(index_);
                }
            }
        }
    }

    // update controller properties
    std::vector<DWORD> currentlyConnectedPIDs_;
    for (INT index_ = 0; index_ < LogitechSteeringWheel::LG_MAX_CONTROLLERS; index_++)
    {
        if (NULL != m_controllerInput)
        {
            if (m_controllerInput->IsConnected(index_))
            {
                currentlyConnectedPIDs_.push_back(m_controllerInput->GetProductID(index_));
            }
        }
    }

    if (NULL != m_controllerProperties)
    {
        m_controllerProperties->Update(currentlyConnectedPIDs_);
    }
}

/****f* Steering.Wheel.SDK/IsConnected(INT.index)
* NAME
*  BOOL IsConnected(INT index) -- Check if a game controller is
*  connected at the specified index.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
* RETURN VALUE
*  TRUE if a PC wheel/joystick/game pad is connected, FALSE otherwise.
* SEE ALSO
*  IsConnected(INT.index,DeviceType.deviceType)
*  IsConnected(INT.index,ManufacturerName.manufacturerName)
*  IsConnected(INT.index,ModelName.modelName)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
BOOL Wheel::IsConnected(CONST INT index)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->IsConnected(index);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/IsConnected(INT.index,DeviceType.deviceType)
* NAME
*  BOOL IsConnected(INT index, DeviceType deviceType) -- Check if a
*  game controller is connected at the specified index.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  deviceType - type of the device to check for.  Possible types are:
*    - LG_DEVICE_TYPE_WHEEL
*    - LG_DEVICE_TYPE_JOYSTICK
*    - LG_DEVICE_TYPE_GAMEPAD
* RETURN VALUE
*  TRUE if a PC controller of specified type is connected, FALSE
*  otherwise.
* SEE ALSO
*  IsConnected(INT.index)
*  IsConnected(INT.index,ManufacturerName.manufacturerName)
*  IsConnected(INT.index,ModelName.modelName)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
BOOL Wheel::IsConnected(CONST INT index, CONST DeviceType deviceType)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->IsConnected(index, deviceType);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/IsConnected(INT.index,ManufacturerName.manufacturerName)
* NAME
*  BOOL IsConnected(INT index, ManufacturerName manufacturerName) --
*  Check if a game controller is connected at the specified index.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  manufacturerName - name of the manufacturer the device has been
*  made by.  Possible names are:
*    - LG_MANUFACTURER_LOGITECH
*    - LG_MANUFACTURER_MICROSOFT
*    - LG_MANUFACTURER_OTHER

* RETURN VALUE
*  TRUE if a PC controller of specified manufacturer is connected,
*  FALSE otherwise.
* SEE ALSO
*  IsConnected(INT.index)
*  IsConnected(INT.index,DeviceType.deviceType)
*  IsConnected(INT.index,ModelName.modelName)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
BOOL Wheel::IsConnected(CONST INT index, CONST ManufacturerName manufacturerName)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->IsConnected(index, manufacturerName);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/IsConnected(INT.index,ModelName.modelName)
* NAME
*  BOOL IsConnected(INT index, ModelName modelName) -- Check if a game
*  controller is connected at the specified index.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  modelName - name of the model of the device.  Possible models are:
*    - LG_MODEL_G27
*    - LG_MODEL_G25
*    - LG_MODEL_MOMO_RACING
*    - LG_MODEL_MOMO_FORCE
*    - LG_MODEL_DRIVING_FORCE_PRO
*    - LG_MODEL_DRIVING_FORCE
*    - LG_MODEL_NASCAR_RACING_WHEEL
*    - LG_MODEL_FORMULA_FORCE
*    - LG_MODEL_FORMULA_FORCE_GP
*    - LG_MODEL_FORCE_3D_PRO
*    - LG_MODEL_EXTREME_3D_PRO
*    - LG_MODEL_FREEDOM_24
*    - LG_MODEL_ATTACK_3
*    - LG_MODEL_FORCE_3D
*    - LG_MODEL_STRIKE_FORCE_3D
*    - LG_MODEL_RUMBLEPAD
*    - LG_MODEL_RUMBLEPAD_2
*    - LG_MODEL_CORDLESS_RUMBLEPAD_2
*    - LG_MODEL_CORDLESS_GAMEPAD
*    - LG_MODEL_DUAL_ACTION_GAMEPAD
*    - LG_MODEL_PRECISION_GAMEPAD_2
*    - LG_MODEL_CHILLSTREAM
* RETURN VALUE
*  TRUE if specific PC controller is connected, FALSE otherwise.
* SEE ALSO
*  IsConnected(INT.index)
*  IsConnected(INT.index,DeviceType.deviceType)
*  IsConnected(INT.index,ManufacturerName.manufacturerName)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
BOOL Wheel::IsConnected(CONST INT index, CONST ModelName modelName)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->IsConnected(index, modelName);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/GetState(INT.index)
* NAME
*  DIJOYSTATE2* GetState(INT index) -- Get the state of the
*  controller.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first game controller connected. Index 1 to the second game
*  controller.
* RETURN VALUE
*  DIJOYSTATE2 structure containing the device's positional
*  information for axes, POVs and buttons.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
DIJOYSTATE2* Wheel::GetState(CONST INT index)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->GetStateDInput(index);
    }

    return NULL;
}

/****f* Steering.Wheel.SDK/GetFriendlyProductName(INT.index)
* NAME
*  LPCTSTR GetFriendlyProductName(INT index) -- Get the device's
*  friendly product name.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first game controller connected. Index 1 to the second game
*  controller.
* RETURN VALUE
*  Device friendly product name.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
LPCTSTR Wheel::GetFriendlyProductName(CONST INT index)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->GetFriendlyProductName(index);
    }

    return _T("");
}

/****f* Steering.Wheel.SDK/ButtonTriggered(INT.index,INT.buttonNbr)
* NAME
*  BOOL ButtonTriggered(INT index, INT buttonNbr) -- Check if a
*  certain button was triggered.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  buttonNbr - the number of the button that we want to
*  check. Possible numbers are: 0 to 127.
* RETURN VALUE
*  TRUE if the button was triggered, FALSE otherwise.
* SEE ALSO
*  ButtonIsPressed(INT.index,INT.buttonNbr)
*  ButtonReleased(INT.index,INT.buttonNbr)
******
*/
BOOL Wheel::ButtonTriggered(CONST INT index, CONST INT buttonNbr)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->ButtonTriggered(index, buttonNbr);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/ButtonReleased(INT.index,INT.buttonNbr)
* NAME
*  BOOL ButtonReleased(INT index, INT buttonNbr) -- Check if a certain
*  button was released.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  buttonNbr - the number of the button that we want to
*  check. Possible numbers are: 0 to 127.
* RETURN VALUE
*  TRUE if the button was released, FALSE otherwise.
* SEE ALSO
*  ButtonIsPressed(INT.index,INT.buttonNbr)
*  ButtonTriggered(INT.index,INT.buttonNbr)
******
*/
BOOL Wheel::ButtonReleased(CONST INT index, CONST INT buttonNbr)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->ButtonReleased(index, buttonNbr);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/ButtonIsPressed(INT.index,INT.buttonNbr)
* NAME
*  BOOL ButtonIsPressed(INT index, INT buttonNbr) -- Check if a
*  certain button is being pressed.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  buttonNbr - the number of the button that we want to
*  check. Possible numbers are: 0 to 127.
* RETURN VALUE
*  TRUE if the button is being pressed, FALSE otherwise.
* SEE ALSO
*  ButtonReleased(INT.index,INT.buttonNbr)
*  ButtonTriggered(INT.index,INT.buttonNbr)
******
*/
BOOL Wheel::ButtonIsPressed(CONST INT index, CONST INT buttonNbr)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->ButtonIsPressed(index, buttonNbr);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/SetPreferredControllerProperties(ControllerPropertiesData.properties)
* NAME
*  HRESULT SetPreferredControllerProperties(ControllerPropertiesData
*  properties) -- set preferred wheel properties.
* INPUTS
*  properties - structure containing all the fields to be set.
* RETURN VALUE
*  E_INVALIDARG if argument is wrong (individual settings out of
*  bounds).
*  E_FAIL if Logitech Gaming Software is older than 5.03.
*  S_OK otherwise.
* NOTES
*  This function merely sets the game's preference. The Steering Wheel
*  SDK will attempt to set the wheel's settings when necessary.
* SEE ALSO
*  GetCurrentControllerProperties(INT.index,ControllerPropertiesData&.properties)
*  GetShifterMode(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::SetPreferredControllerProperties(CONST ControllerPropertiesData properties)
{
    _ASSERT(NULL != m_controllerProperties);

    HRESULT ret_ = E_FAIL;

    if (NULL != m_controllerProperties)
    {
        ret_ = m_controllerProperties->SetPreferred(properties);
        g_forceActuatorsResetTriggered = GetTickCount();
    }

    return ret_;
}

/****f* Steering.Wheel.SDK/GetCurrentControllerProperties(INT.index,ControllerPropertiesData&.properties)
* NAME
*  BOOL GetCurrentControllerProperties(INT index,
*  ControllerPropertiesData& properties) -- get current properties.
* INPUTS
*  index - index of the game controller.
*  properties - structure to receive current properties.
* RETURN VALUE
*  TRUE if current value was received from Logitech driver.
*  FALSE if function failed or current value is default value.
* NOTES
*  Function will fail and return default properties if user has older
*  than 5.03 Logitech Gaming Software installed.
* SEE ALSO
*  SetPreferredControllerProperties(ControllerPropertiesData.properties)
*  GetShifterMode(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
BOOL Wheel::GetCurrentControllerProperties(CONST INT index, ControllerPropertiesData& properties)
{
    _ASSERT(NULL != m_controllerProperties);
    _ASSERT(NULL != m_controllerInput);

    if (NULL != m_controllerProperties && NULL != m_controllerInput)
    {
        return m_controllerProperties->GetCurrent(m_controllerInput->GetProductID(index), properties);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/GetShifterMode(INT.index)
* NAME
*  INT GetShifterMode(INT index) -- get current shifter mode (gated or
*  sequential).
* INPUTS
*  index - index of the game controller.
* RETURN VALUE
*  1 if shifter is gated
*  0 if shifter is sequential
*  -1 if unknown
* SEE ALSO
*  SetPreferredControllerProperties(ControllerPropertiesData.properties)
*  GetCurrentControllerProperties(INT.index,ControllerPropertiesData&.properties)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see an
*  example.
******
*/
INT Wheel::GetShifterMode(CONST INT index)
{
    _ASSERT(NULL != m_controllerProperties);
    _ASSERT(NULL != m_controllerInput);

    if (NULL != m_controllerProperties && NULL != m_controllerInput)
    {
        if (IsConnected(index, LG_MODEL_G25))
        {
            return m_controllerProperties->GetShifterMode(m_controllerInput->GetDeviceHandle(index));
        }
        else if (IsConnected(index, LG_MODEL_G27))
        {
            return 1;
        }
    }

    return 0;
}

/****f* Steering.Wheel.SDK/PlayLeds(INT.index,FLOAT.currentRPM,FLOAT.rpmFirstLedTurnsOn,FLOAT.rpmRedLine)
* NAME
*  HRESULT PlayLeds(INT index, FLOAT currentRPM, FLOAT
*  rpmFirstLedTurnsOn, FLOAT rpmRedLine) -- play LEDs on G27.
* INPUTS
*  index - index of the game controller.
*  currentRPM - current RPM.
*  rpmFirstLedTurnsOn - RPM when first LEDs are to turn on.
*  rpmRedLine - just below this RPM, all LEDs will be on. Just above,
*  all LEDs will start flashing.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlayLeds(CONST INT index, CONST FLOAT currentRPM, CONST FLOAT rpmFirstLedTurnsOn, CONST FLOAT rpmRedLine)
{
    if (NULL == m_controllerInput)
    {
        return E_POINTER;
    }

    LPDIRECTINPUTDEVICE8 deviceHandle_ = m_controllerInput->GetDeviceHandle(index);
    if (NULL == deviceHandle_)
    {
        return E_POINTER;
    }

    return m_leds.Play(deviceHandle_, currentRPM, rpmFirstLedTurnsOn, rpmRedLine);
}

/****f* Steering.Wheel.SDK/HasForceFeedback(INT.index)
* NAME
*  BOOL HasForceFeedback(INT index) -- Check if a game controller has
*  force feedback.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
* RETURN VALUE
*  TRUE if the specified device can do force feedback, FALSE
*  otherwise.
******
*/
BOOL Wheel::HasForceFeedback(CONST INT index)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->HasForceFeedback(index);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/IsPlaying(INT.index,ForceType.forceType)
* NAME
*  BOOL IsPlaying(INT index, ForceType forceType) -- check if a
*  certain force effect is currently playing.
* INPUTS
*  index - index of the game controller that we want to check.  Index
*  0 corresponds to the first game controller connected. Index 1 to
*  the second game controller.
*
*  forceType - the type of the force that we want to check to see if
*  it is playing.  Possible types are:
*    - LG_FORCE_SPRING
*    - LG_FORCE_CONSTANT
*    - LG_FORCE_DAMPER
*    - LG_FORCE_SIDE_COLLISION
*    - LG_FORCE_FRONTAL_COLLISION
*    - LG_FORCE_DIRT_ROAD
*    - LG_FORCE_BUMPY_ROAD
*    - LG_FORCE_SLIPPERY_ROAD
*    - LG_FORCE_SURFACE_EFFECT
*    - LG_FORCE_CAR_AIRBORNE
* RETURN VALUE
*  TRUE if the force is playing, FALSE otherwise.
******
*/
BOOL Wheel::IsPlaying(CONST INT index, CONST ForceType forceType)
{
    if (!IsConnected(index))
        return FALSE;

    if (!HasForceFeedback(index))
        return FALSE;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL != m_controllerForce[index])
    {
        if (forceType == LG_FORCE_CAR_AIRBORNE)
        {
            return m_isAirborne[index];
        }

        return m_controllerForce[index]->IsPlaying(forceType);
    }

    return FALSE;
}

/****f* Steering.Wheel.SDK/GenerateNonLinearValues(INT.index,INT.nonLinCoeff)
* NAME
*  HRESULT GenerateNonLinearValues(int index, int nonLinCoeff) --
*  Generate non-linear values for the game controller's axis.
* FUNCTION
*  Gaming wheels/joysticks/game pads have very different behavior from
*  real steering wheels. The reason for single-turn wheels is that
*  they only do up to three quarters of a turn lock to lock, compared
*  to about 3 turns for a real car.
*  This directly affects the steering ratio (15:1 to 20:1 for a real
*  car, but only 4:1 for a gaming wheel!). Joysticks and game pads
*  have a much shorter range of movement than a real steering wheel as
*  well.
*  Because of this very short steering ratio or short range, the
*  gaming wheel/joystick/game pad will feel highly sensitive which may
*  make game play very difficult.
*  Especially it may be difficult to drive in a straight line at speed
*  (tendency to swerve back and forth).
*  One way to get around this problem is to use a sensitivity
*  curve. This is a curve that defines the sensitivity of the game
*  controller depending on speed. This type of curve is usually used
*  for game pads to make up for their low physical range. The result
*  of applying such a curve is that at high speed the car's wheels
*  will physically turn less than if the car is moving very slowly.
*  For example the car's wheels may turn 60 degrees lock to lock at
*  low speed but only 10 degrees lock to lock at higher speeds.  If
*  you calculate the resulting steering ratio for 10 degrees lock to
*  lock you find that if you use a steering wheel that turns 180
*  degrees lock to lock the ratio is equal to 180/10 = 18, which
*  corresponds to a real car's steering ratio.
*  If the sensitivity curve has been implemented for the
*  wheel/joystick, adding a non-linear curve probably is not
*  necessary. But you may find that even after applying a sensitivity
*  curve, the car still feels a little twitchy on a straight line when
*  driving fast. This may be because in your game you need more than
*  10 degrees lock to lock even at high speeds. Or maybe the car is
*  moving at very high speeds where even a normal steering ratio is
*  not good enough to eliminate high sensitivity.
*  The best way at this point is to add a non-linear curve on top of
*  the sensitivity curve.
*  The effect of the non-linear curve with positive nonLinCoeff is
*  that around center position the wheel/joystick will be less
*  sensitive.  Yet at locked position left or right the car's wheels
*  will turn the same amount of degrees as without the non-linear
*  response curve.  Therefore the car will become more controllable on
*  a straight line and game-play will be improved.
*  There can sometimes be cases where the wheel does not feel
*  sensitive enough. In that case it is possible to add a non-linear
*  curve with the inverse effect (makes the steering more sensitive
*  around center position) by using negative values for
*  nonLinCoeff. This method lets you define a non-linearity
*  coefficient which will determine how strongly non-linear the curve
*  will be. When running the method it will generate a mapping table
*  in the form of an array. For each of the 1024 entries in this array
*  there will be a corresponding non-linear value which can be used as
*  the wheel/joystick's axis position instead of the original
*  value. See Sample_In-game_Implementation.cs for an example.
* INPUTS
*  index - index to which the concerned game controller is connected.
*  Index 0 corresponds to the first game controller connected. Index 1
*  to the second game controller.
*
*  nonLinCoeff - value representing how much non-linearity should be
*  applied. Range is -100 to 100. 0 = linear curve, 100 = maximum
*  non-linear curve with less sensitivity around center, -100 =
*  maximum non-linearity with more sensitivity around center position.
* RETURN VALUE
*  S_OK if successful, E_FAIL otherwise.
* SEE ALSO
*  GetNonLinearValue(INT.index,INT.inputValue)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::GenerateNonLinearValues(CONST INT index, CONST INT nonLinCoeff)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->GenerateNonLinearValues(index, nonLinCoeff);
    }

    return E_FAIL;
}

/****f* Steering.Wheel.SDK/GetNonLinearValue(INT.index,INT.inputValue)
* NAME
*  INT GetNonLinearValue(INT index, INT inputValue) -- Get a
*  non-linear value from a table previously generated. This can be
*  used for the response of a steering wheel.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first game controller connected. Index 1 to the second game
*  controller.
*
*  inputValue - value between -32768 and 32767 corresponding to
*  original value of an axis.
* RETURN VALUE
*  Value between -32768 and 32767 corresponding to the level of
*  non-linearity previously set with GenerateNonLinearValues(...).
* SEE ALSO
*  GenerateNonLinearValues(INT.index,INT.nonLinCoeff)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see an
*  example.
******
*/
INT Wheel::GetNonLinearValue(CONST INT index, CONST INT inputValue)
{
    _ASSERT(NULL != m_controllerInput);
    if (NULL != m_controllerInput)
    {
        return m_controllerInput->GetNonLinearValue(index, inputValue);
    }

    return 0;
}

/****f* Steering.Wheel.SDK/PlaySpringForce(INT.index,INT.offsetPercentage,INT.saturationPercentage,INT.coefficientPercentage)
* NAME
*  HRESULT PlaySpringForce(INT index, INT offsetPercentage, INT
*  saturationPercentage, INT coefficientPercentage) -- Play the spring
*  force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  offsetPercentage - Specifies the center of the spring force effect.
*  Valid range is -100 to 100. Specifying 0 centers the spring. Any
*  values outside this range are silently clamped.
*
*  saturationPercentage - Specify the level of saturation of the
*  spring force effect. The saturation stays constant after a certain
*  deflection from the center of the spring. It is comparable to a
*  magnitude.  Valid ranges are 0 to 100. Any value higher than 100 is
*  silently clamped.
*
*  coefficientPercentage - Specify the slope of the effect strength
*  increase relative to the amount of deflection from the center of
*  the condition.  Higher values mean that the saturation level is
*  reached sooner.  Valid ranges are -100 to 100. Any value outside
*  the valid range is silently clamped.
* NOTES
*  The dynamic spring force gets played on the X axis. If a joystick
*  is connected, all forces generated by the Steering Wheel SDK will be
*  played on the X axis. And in addition there will be a constant
*  spring on the Y axis.
* SEE ALSO
*  StopSpringForce(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlaySpringForce(CONST INT index, CONST INT offsetPercentage, CONST INT saturationPercentage, CONST INT coefficientPercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, or slippery force is playing, do nothing.
    if (HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE
        || IsPlaying(index, LG_FORCE_SLIPPERY_ROAD))
    {
        return E_FAIL;
    }

    // If connected device is a gamepad, do not play the force. A spring
    // force with variable offset results in annoying constant vibration
    // for the gamepad, so let's not play it.
    if (m_controllerInput->IsConnected(index, LG_DEVICE_TYPE_GAMEPAD))
    {
        return S_OK;
    }

    SpringForceParams params_;
    params_.m_diCondition[0].lOffset = Utils::FromPercentage(offsetPercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_diCondition[0].dwPositiveSaturation = Utils::FromPercentage(saturationPercentage, 0, 100, 0, DI_FFNOMINALMAX);
    params_.m_diCondition[0].dwNegativeSaturation = params_.m_diCondition[0].dwPositiveSaturation;
    params_.m_diCondition[0].lPositiveCoefficient = Utils::FromPercentage(coefficientPercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_diCondition[0].lNegativeCoefficient = params_.m_diCondition[0].lPositiveCoefficient;
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    // Direction for spring parameters is different for Microsoft joystick
    // Also offset needs to be reversed for Microsoft joystick...
    if (IsConnected(index, LG_DEVICE_TYPE_JOYSTICK) && IsConnected(index, LG_MANUFACTURER_MICROSOFT))
    {
        params_.m_diCondition[0].lOffset = -params_.m_diCondition[0].lOffset;
        params_.m_rglDirection[0] = 0;
        params_.m_rglDirection[1] = 1;
    }
    else
    {
        params_.m_rglDirection[0] = 1;
        params_.m_rglDirection[1] = 0;
    }

    LogiSpringForce* force_ = (LogiSpringForce*)m_controllerForce[index]->GetForce(LG_FORCE_SPRING);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (m_controllerForce[index]->GetForce(LG_FORCE_SPRING)->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diCondition[0].lOffset != force_->GetCurrentForceParams().m_diCondition[0].lOffset
            || params_.m_diCondition[0].dwPositiveSaturation != force_->GetCurrentForceParams().m_diCondition[0].dwPositiveSaturation
            || params_.m_diCondition[0].lPositiveCoefficient != force_->GetCurrentForceParams().m_diCondition[0].lPositiveCoefficient)
        {
            hr_ = force_->SetParameters(params_);
        }
    }

    if (!force_->IsPlaying())
    {
        hr_ = force_->Start();
    }

    return hr_;
}

/****f* Steering.Wheel.SDK/StopSpringForce(INT.index)
* NAME
*  HRESULT StopSpringForce(INT index) -- Stop the spring force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlaySpringForce(INT.index,INT.offsetPercentage,INT.saturationPercentage,INT.coefficientPercentage)
******
*/
HRESULT Wheel::StopSpringForce(CONST INT index)
{
    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_SPRING)->Stop();
}

/****f* Steering.Wheel.SDK/PlayConstantForce(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlayConstantForce(INT index, INT magnitudePercentage) --
*  Play the constant force.
* FUNCTION
*  A constant force works best when continuously updated with a value
*  tied to the physics engine.
*  Tie the steering wheel/joystick to the car's physics engine via a
*  vector force. This will create a centering spring effect, a sliding
*  effect, a feeling for the car's inertia, and depending on the
*  physics engine it should also give side collisions (wheel/joystick
*  jerks in the opposite way of the wall the car just touched).
*  The vector force could for example be calculated from the lateral
*  force measured at the front tires. This vector force should be 0
*  when at a stop or driving straight. When driving through a turn or
*  when driving on a banked surface the vector force should have a
*  magnitude that grows in a proportional way.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - Specifies the magnitude of the constant force
*  effect. A negative value reverses the direction of the force.
*  Valid ranges for magnitudePercentage are -100 to 100. Any values
*  outside the valid range are silently clamped.
* SEE ALSO
*  StopConstantForce(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlayConstantForce(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    // If connected device is a gamepad, do not play the force. Since
    // the constant force is usually tied to the physics and
    // constantly playing in game it results in annoying constant
    // vibration for the gamepad, so let's not play it.
    if (m_controllerInput->IsConnected(index, LG_DEVICE_TYPE_GAMEPAD))
    {
        return S_OK;
    }

    ConstantForceParams params_;
    params_.m_diConstantForce.lMagnitude = Utils::FromPercentage(magnitudePercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiConstantForce* force_ = (LogiConstantForce*)m_controllerForce[index]->GetForce(LG_FORCE_CONSTANT);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diConstantForce.lMagnitude != force_->GetCurrentForceParams().m_diConstantForce.lMagnitude)
        {
            hr_ = force_->SetParameters(params_);

            // For older Formula Force wheel, force a Start twice or
            // else it doesn't work correctly.
            if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
            {
                hr_ = force_->Start();
                hr_ = force_->Start();
            }
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopConstantForce(INT.index)
* NAME
*  HRESULT StopConstantForce(INT index) -- stop the constant force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlayConstantForce(INT.index,INT.magnitudePercentage)
******
*/
HRESULT Wheel::StopConstantForce(CONST INT index)
{
    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_CONSTANT)->Stop();
}

/****f* Steering.Wheel.SDK/PlayDamperForce(INT.index,INT.coefficientPercentage)
* NAME
*  HRESULT PlayDamperForce(INT index, INT coefficientPercentage) --
*  Play the damper force.
* FUNCTION
*  Simulate surfaces that are hard to turn on (mud, car at a stop) or
*  slippery surfaces (snow, ice).
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  coefficientPercentage - specify the slope of the effect strength
*  increase relative to the amount of deflection from the center of
*  the condition.  Higher values mean that the saturation level is
*  reached sooner.  Valid ranges are -100 to 100. Any value outside
*  the valid range is silently clamped. -100 simulates a very slippery
*  effect, +100 makes the wheel/joystick very hard to move, simulating
*  the car at a stop or in mud.
* SEE ALSO
*  StopDamperForce(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlayDamperForce(CONST INT index, CONST INT coefficientPercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do
    // nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE
        || m_controllerForce[index]->IsPlaying(LG_FORCE_SLIPPERY_ROAD))
    {
        return E_FAIL;
    }

    DamperForceParams params_;
    params_.m_diCondition[0].lPositiveCoefficient = Utils::FromPercentage(coefficientPercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_diCondition[0].lNegativeCoefficient = params_.m_diCondition[0].lPositiveCoefficient;
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    // Direction for damper parameters is different for Microsoft
    // joystick
    if (IsConnected(index, LG_DEVICE_TYPE_JOYSTICK) && IsConnected(index, LG_MANUFACTURER_MICROSOFT))
    {
        params_.m_rglDirection[0] = 0;
        params_.m_rglDirection[1] = 1;
    }
    else
    {
        params_.m_rglDirection[0] = 1;
        params_.m_rglDirection[1] = 0;
    }

    LogiDamperForce* force_ = (LogiDamperForce*)m_controllerForce[index]->GetForce(LG_FORCE_DAMPER);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diCondition[0].lPositiveCoefficient != force_->GetCurrentForceParams().m_diCondition[0].lPositiveCoefficient)
        {
            hr_ = force_->SetParameters(params_);
        }
    }

    if (!force_->IsPlaying())
    {
        hr_ = force_->Start();
    }

    return hr_;
}

/****f* Steering.Wheel.SDK/StopDamperForce(INT.index)
* NAME
*  HRESULT StopDamperForce(INT index) -- stop the damper force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlayDamperForce(INT.index,INT.coefficientPercentage)
******
*/
HRESULT Wheel::StopDamperForce(CONST INT index)
{
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_DAMPER)->Stop();
}

/****f* Steering.Wheel.SDK/PlaySideCollisionForce(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlaySideCollisionForce(INT index, INT magnitudePercentage)
*  -- play a side collision force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - Specifies the magnitude of the side collision
*  force effect. A negative value reverses the direction of the force.
*  Valid ranges for magnitudePercentage are -100 to 100. Any values
*  outside the valid range are silently clamped.
* NOTES
*  If you are already using a constant force tied to a vector force
*  from the physics engine, then you may not need to add side
*  collisions since depending on your physics engine the side
*  collisions may automatically be taken care of by the constant
*  force.
******
*/
HRESULT Wheel::PlaySideCollisionForce(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE)
    {
        return E_FAIL;
    }

    // If 2 collisions back to back, second weaker collision might overwrite first one, so add their magnitudes.
    static DWORD timeAtSideCollision_ = 0;
    static INT combinedMagnitudePercentage_ = 0;

    DWORD currentTime_ = GetTickCount();

    if (currentTime_ - timeAtSideCollision_ > LG_COLLISION_EFFECT_DURATION)
    {
        combinedMagnitudePercentage_ = magnitudePercentage;
        timeAtSideCollision_ = currentTime_;
    }
    else
    {
        combinedMagnitudePercentage_ = min(combinedMagnitudePercentage_ + magnitudePercentage, 100);
    }

    SideCollisionEffectParams params_;
    params_.m_diConstantForce.lMagnitude = Utils::FromPercentage(combinedMagnitudePercentage_, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiSideCollisionEffect* force_ = (LogiSideCollisionEffect*)m_controllerForce[index]->GetForce(LG_FORCE_SIDE_COLLISION);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diConstantForce.lMagnitude != force_->GetCurrentForceParams().m_diConstantForce.lMagnitude)
        {
            hr_ = force_->SetParameters(params_);

            // For older Formula Force wheel, we need to stop the force before re-starting it.
            if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
            {
                hr_ = force_->Stop();
            }
        }
    }

    hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/PlayFrontalCollisionForce(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlayFrontalCollisionForce(INT index, INT
*  magnitudePercentage) -- Play a frontal collision force.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - specifies the magnitude of the frontal
*  collision force effect.  Valid ranges for magnitudePercentage are 0
*  to 100. Values higher than 100 are silently clamped.
* SEE ALSO
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlayFrontalCollisionForce(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE)
    {
        return E_FAIL;
    }

    // If 2 collisions back to back, second weaker collision might overwrite first one, so add their magnitudes.
    static DWORD timeAtFrontalCollision_ = 0;
    static INT combinedMagnitudePercentage_ = 0;

    DWORD currentTime_ = GetTickCount();

    if (currentTime_ - timeAtFrontalCollision_ > LG_COLLISION_EFFECT_DURATION)
    {
        combinedMagnitudePercentage_ = magnitudePercentage;
        timeAtFrontalCollision_ = currentTime_;
    }
    else
    {
        combinedMagnitudePercentage_ = min(combinedMagnitudePercentage_ + magnitudePercentage, 100);
    }

    FrontalCollisionEffectParams params_;
    params_.m_diPeriodic.dwMagnitude = Utils::FromPercentage(combinedMagnitudePercentage_, 0, 100, 0, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiFrontalCollisionEffect* force_ = (LogiFrontalCollisionEffect*)m_controllerForce[index]->GetForce(LG_FORCE_FRONTAL_COLLISION);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diPeriodic.dwMagnitude != force_->GetCurrentForceParams().m_diPeriodic.dwMagnitude)
        {
            hr_ = force_->SetParameters(params_);

            // For older Formula Force wheel, we need to stop the force before re-starting it.
            if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
            {
                hr_ = force_->Stop();
            }
        }
    }

    hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/PlayDirtRoadEffect(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlayDirtRoadEffect(INT index, INT magnitudePercentage) --
*  Play a surface effect that feels like driving on a dirt road.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - Specifies the magnitude of the dirt road
*  effect.  Valid ranges for magnitudePercentage are 0 to 100. Values
*  higher than 100 are silently clamped.
* SEE ALSO
*  StopDirtRoadEffect(INT.index)
*  PlaySurfaceEffect(INT.index,PeriodicType.type,INT.magnitude,INT.period)
******
*/
HRESULT Wheel::PlayDirtRoadEffect(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    // If older Formula Force wheel, don't play periodic effect cause it gets all screwy.
    if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
    {
        return S_OK;
    }

    DirtRoadEffectParams params_;
    params_.m_diPeriodic.dwMagnitude = Utils::FromPercentage(magnitudePercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiDirtRoadEffect* force_ = (LogiDirtRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_DIRT_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diPeriodic.dwMagnitude != force_->GetCurrentForceParams().m_diPeriodic.dwMagnitude)
        {
            hr_ = force_->SetParameters(params_);
        }
        else
        {
            hr_ = S_OK;
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopDirtRoadEffect(INT.index)
* NAME
*  HRESULT StopDirtRoadEffect(INT index) -- stop the dirt road effect.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlayDirtRoadEffect(INT.index,INT.magnitudePercentage)
******
*/
HRESULT Wheel::StopDirtRoadEffect(CONST INT index)
{
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_DIRT_ROAD)->Stop();
}

/****f* Steering.Wheel.SDK/PlayBumpyRoadEffect(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlayBumpyRoadEffect(INT index, INT magnitudePercentage) --
*  Play a surface effect that feels like driving on a bumpy road (like
*  on cobblestones for example).
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - Specifies the magnitude of the bumpy road
*  effect.  Valid ranges for magnitudePercentage are 0 to 100. Values
*  higher than 100 are silently clamped.
* SEE ALSO
*  StopBumpyRoadEffect(INT.index)
*  PlaySurfaceEffect(INT.index,PeriodicType.type,INT.magnitudePercentage,INT.period)
******
*/
HRESULT Wheel::PlayBumpyRoadEffect(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    BumpyRoadEffectParams params_;
    params_.m_diPeriodic.dwMagnitude = Utils::FromPercentage(magnitudePercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiBumpyRoadEffect* force_ = (LogiBumpyRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_BUMPY_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diPeriodic.dwMagnitude != force_->GetCurrentForceParams().m_diPeriodic.dwMagnitude)
        {
            hr_ = force_->SetParameters(params_);
        }
        else
        {
            hr_ = S_OK;
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopBumpyRoadEffect(INT.index)
* NAME
*  HRESULT StopBumpyRoadEffect(INT index) -- stop the bumpy road
*  effect.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlayBumpyRoadEffect(INT.index,INT.magnitudePercentage)
******
*/
HRESULT Wheel::StopBumpyRoadEffect(CONST INT index)
{
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_BUMPY_ROAD)->Stop();
}

/****f* Steering.Wheel.SDK/PlaySlipperyRoadEffect(INT.index,INT.magnitudePercentage)
* NAME
*  HRESULT PlaySlipperyRoadEffect(INT index, INT magnitudePercentage)
*  -- Play a slippery road effect (snow, ice).
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  magnitudePercentage - Specifies the magnitude of the slippery road
*  effect.  Valid ranges for magnitudePercentage are 0 to 100. 100
*  corresponds to the most slippery effect.
* SEE ALSO
*  StopSlipperyRoadEffect(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlaySlipperyRoadEffect(CONST INT index, CONST INT magnitudePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    if (IsPlaying(index, LG_FORCE_SPRING))
    {
        StopSpringForce(index);
        m_springWasPlaying[index] = TRUE;
    }

    if (IsPlaying(index, LG_FORCE_DAMPER))
    {
        StopDamperForce(index);
        m_damperWasPlaying[index] = TRUE;
    }

    SlipperyRoadEffectParams params_;
    params_.m_diCondition[0].lPositiveCoefficient = -Utils::FromPercentage(magnitudePercentage, 0, 100, 0, DI_FFNOMINALMAX);
    params_.m_diCondition[0].lNegativeCoefficient = params_.m_diCondition[0].lPositiveCoefficient;
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    // Direction for damper parameters is different for Microsoft joystick
    if (IsConnected(index, LG_DEVICE_TYPE_JOYSTICK) && IsConnected(index, LG_MANUFACTURER_MICROSOFT))
    {
        params_.m_rglDirection[0] = 0;
        params_.m_rglDirection[1] = 1;
    }
    else
    {
        params_.m_rglDirection[0] = 1;
        params_.m_rglDirection[1] = 0;
    }

    LogiSlipperyRoadEffect* force_ = (LogiSlipperyRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_SLIPPERY_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diCondition[0].lPositiveCoefficient != force_->GetCurrentForceParams().m_diCondition[0].lPositiveCoefficient)
        {
            hr_ = force_->SetParameters(params_);
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopSlipperyRoadEffect(INT.index)
* NAME
*  HRESULT StopSlipperyRoadEffect(INT index) -- stop the slippery road
*  effect.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlaySlipperyRoadEffect(INT.index,INT.magnitudePercentage)
******
*/
HRESULT Wheel::StopSlipperyRoadEffect(CONST INT index)
{
    HRESULT hr_;

    if (NULL == m_controllerForce[index])
        return E_FAIL;

    if (FAILED(hr_ = m_controllerForce[index]->GetForce(LG_FORCE_SLIPPERY_ROAD)->Stop()))
        return hr_;

    if (m_springWasPlaying[index] == TRUE)
    {
        PlaySpringForce(index);
        m_springWasPlaying[index] = FALSE;
    }

    if (m_damperWasPlaying[index] == TRUE)
    {
        PlayDamperForce(index);
        m_damperWasPlaying[index] = FALSE;
    }

    return S_OK;
}

/****f* Steering.Wheel.SDK/PlaySurfaceEffect(INT.index,PeriodicType.type,INT.magnitudePercentage,INT.period)
* NAME
*  HRESULT PlaySurfaceEffect(INT index, PeriodicType type, INT
*  magnitudePercentage, INT period) -- play any type of rumble to
*  simulate surface effects.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
*
*  type - Specifies the type of force effect. Can be one of the
*  following values:
*    - PeriodicType.LG_TYPE_SINE
*    - PeriodicType.LG_TYPE_SQUARE
*
*  magnitudePercentage - Specifies the magnitude of the surface
*  effect.  Valid ranges for magnitudePercentage are 0 to 100. Values
*  higher than 100 are silently clamped.
*
*  period - Specifies the period of the periodic force effect. The
*  value is the duration for one full cycle of the periodic function
*  measured in milliseconds. A good range of values for the period is
*  20 ms (sand) to 120 ms (wooden bridge or cobblestones). For a
*  surface effect the period should not be any bigger than 150 ms.
* SEE ALSO
*  StopSurfaceEffect(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlaySurfaceEffect(CONST INT index, CONST PeriodicType type, CONST INT magnitudePercentage, CONST INT period)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    // If older Formula Force wheel, don't play periodic effect cause
    // it gets all screwy.
    if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
    {
        return S_OK;
    }

    SurfaceEffectParams params_;
    params_.m_diPeriodic.dwMagnitude = Utils::FromPercentage(magnitudePercentage, -100, 100, -DI_FFNOMINALMAX, DI_FFNOMINALMAX);
    params_.m_diPeriodic.dwPeriod = period * 1000;
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    switch(type)
    {
    case LG_TYPE_SINE:
        params_.m_type = &GUID_Sine;
        break;
    case LG_TYPE_SQUARE:
        params_.m_type = &GUID_Square;
        break;
    case LG_TYPE_TRIANGLE:
        params_.m_type = &GUID_Triangle;
        break;
    }

    LogiSurfaceEffect* force_ = (LogiSurfaceEffect*)m_controllerForce[index]->GetForce(LG_FORCE_SURFACE_EFFECT);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        // if type different, unload force, create new one
        if (params_.m_type != force_->GetCurrentForceParams().m_type)
        {
            if FAILED(hr_ = force_->Unload())
                LOGIWHEELTRACE(_T("PlaySurfaceEffect; Failed to unload force\n"));

            hr_ = force_->CreateEffect(params_);
        }
        else if (params_.m_diPeriodic.dwMagnitude != force_->GetCurrentForceParams().m_diPeriodic.dwMagnitude
            || params_.m_diPeriodic.dwPeriod != force_->GetCurrentForceParams().m_diPeriodic.dwPeriod
            || params_.m_diPeriodic.lOffset != force_->GetCurrentForceParams().m_diPeriodic.lOffset)
        {
            hr_ = force_->SetParameters(params_);
        }
        else
        {
            hr_ = S_OK;
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopSurfaceEffect(INT.index)
* NAME
*  HRESULT StopSurfaceEffect(INT index) -- stop the surface effect.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlaySurfaceEffect(INT.index,PeriodicType.type,INT.magnitudePercentage,INT.period)
******
*/
HRESULT Wheel::StopSurfaceEffect(CONST INT index)
{
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_SURFACE_EFFECT)->Stop();
}

/****f* Steering.Wheel.SDK/PlayCarAirborne(INT.index)
* NAME
*  HRESULT PlayCarAirborne(INT index) -- play an effect that simulates
*  a car that is airborne or where the front wheels do not touch the
*  ground.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  StopCarAirborne(INT.index)
*  SampleInGameImplementation.cpp or SteeringWheelSDKDemo.cpp to see
*  an example.
******
*/
HRESULT Wheel::PlayCarAirborne(CONST INT index)
{
    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE)
    {
        return E_FAIL;
    }

    if (m_isAirborne[index] == FALSE)
    {
        m_isAirborne[index] = TRUE;

        if (IsPlaying(index, LG_FORCE_SPRING))
        {
            StopSpringForce(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_SPRING] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_CONSTANT))
        {
            StopConstantForce(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_CONSTANT] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_DAMPER))
        {
            StopDamperForce(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_DAMPER] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_DIRT_ROAD))
        {
            StopDirtRoadEffect(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_DIRT_ROAD] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_BUMPY_ROAD))
        {
            StopBumpyRoadEffect(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_BUMPY_ROAD] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_SLIPPERY_ROAD))
        {
            StopSlipperyRoadEffect(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_SLIPPERY_ROAD] = TRUE;
        }
        if (IsPlaying(index, LG_FORCE_SURFACE_EFFECT))
        {
            StopSurfaceEffect(index);
            m_wasPlayingBeforeAirborne[index][LG_FORCE_SURFACE_EFFECT] = TRUE;
        }
    }

    return S_OK;
}

/****f* Steering.Wheel.SDK/StopCarAirborne(INT.index)
* NAME
*  HRESULT StopCarAirborne(INT index) -- stop the car airborne effect
*  and resume any forces that were playing before the car was
*  airborne.
* INPUTS
*  index - index of the game controller.  Index 0 corresponds to the
*  first wheel/joystick connected. Index 1 to the second
*  wheel/joystick.
* SEE ALSO
*  PlayCarAirborne(INT.index)
******
*/
HRESULT Wheel::StopCarAirborne(CONST INT index)
{
    m_isAirborne[index] = FALSE;

    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_SPRING] == TRUE)
    {
        PlaySpringForce(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_CONSTANT] == TRUE)
    {
        PlayConstantForce(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_DAMPER] == TRUE)
    {
        PlayDamperForce(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_DIRT_ROAD] == TRUE)
    {
        PlayDirtRoadEffect(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_BUMPY_ROAD] == TRUE)
    {
        PlayBumpyRoadEffect(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_SLIPPERY_ROAD] == TRUE)
    {
        PlaySlipperyRoadEffect(index);
    }
    if (m_wasPlayingBeforeAirborne[index][LG_FORCE_SURFACE_EFFECT] == TRUE)
    {
        PlaySurfaceEffect(index);
    }

    // re-initialize variables
    for (INT jj = 0; jj < LG_NUMBER_FORCE_EFFECTS; jj++)
    {
        m_wasPlayingBeforeAirborne[index][jj] = FALSE;
    }

    return S_OK;
}

/****f* Steering.Wheel.SDK/PlaySoftstopForce(INT.index,INT.usableRangePercentage)
* NAME
*  HRESULT PlaySoftstopForce(INT index, INT usableRangePercentage) --
*  Play a spring force that acts like a soft stop in order to limit a
*  wheel's range.
* INPUTS
*  index - index of the game controller.
*
*  usableRangePercentage - Specifies the deadband in percentage of the
*  softstop force effect.
* SEE ALSO
*  StopSoftstopForce(INT.index)
******
*/
HRESULT Wheel::PlaySoftstopForce(CONST INT index, CONST INT usableRangePercentage)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE)
    {
        return E_FAIL;
    }

    SoftstopForceParams params_;
    params_.m_diCondition[0].lDeadBand = Utils::FromPercentage(usableRangePercentage, 0, 100, 0, DI_FFNOMINALMAX);
    params_.m_numFFAxes = m_controllerInput->GetNumberFFAxesDInput(index);

    LogiSoftstopForce* force_ = (LogiSoftstopForce*)m_controllerForce[index]->GetForce(LG_FORCE_SOFTSTOP);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
    {
        hr_ = force_->CreateEffect(params_);
    }
    else
    {
        if (params_.m_diCondition[0].lDeadBand != force_->GetCurrentForceParams().m_diCondition[0].lDeadBand)
        {
            hr_ = force_->SetParameters(params_);
        }
    }

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

/****f* Steering.Wheel.SDK/StopSoftstopForce(INT.index)
* NAME
*  HRESULT StopSoftstopForce(INT index) -- stop the "softstop" spring
*  force.
* INPUTS
*  index - index of the game controller.
* SEE ALSO
*  PlaySoftstopForce(INT.index,INT.usableRangePercentage)
******
*/
HRESULT Wheel::StopSoftstopForce(CONST INT index)
{
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    return m_controllerForce[index]->GetForce(LG_FORCE_SOFTSTOP)->Stop();
}

HRESULT Wheel::PlaySpringForce(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE
        || m_controllerForce[index]->IsPlaying(LG_FORCE_SLIPPERY_ROAD))
    {
        return E_FAIL;
    }

    LogiSpringForce* force_ = (LogiSpringForce*)m_controllerForce[index]->GetForce(LG_FORCE_SPRING);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    SpringForceParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlayConstantForce(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do
    // nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    LogiConstantForce* force_ = (LogiConstantForce*)m_controllerForce[index]->GetForce(LG_FORCE_CONSTANT);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    ConstantForceParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlayDamperForce(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, or
    // slippery road playing do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE
        || m_controllerForce[index]->IsPlaying(LG_FORCE_SLIPPERY_ROAD))
    {
        return E_FAIL;
    }

    LogiDamperForce* force_ = (LogiDamperForce*)m_controllerForce[index]->GetForce(LG_FORCE_DAMPER);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    DamperForceParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlayDirtRoadEffect(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    LogiDirtRoadEffect* force_ = (LogiDirtRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_DIRT_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    DirtRoadEffectParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlayBumpyRoadEffect(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    // If older Formula Force wheel, don't play periodic effect cause
    // it gets all screwy.
    if (IsConnected(index, LG_MODEL_FORMULA_FORCE))
    {
        return S_OK;
    }

    LogiBumpyRoadEffect* force_ = (LogiBumpyRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_BUMPY_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    BumpyRoadEffectParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlaySlipperyRoadEffect(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    LogiSlipperyRoadEffect* force_ = (LogiSlipperyRoadEffect*)m_controllerForce[index]->GetForce(LG_FORCE_SLIPPERY_ROAD);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    SlipperyRoadEffectParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

HRESULT Wheel::PlaySurfaceEffect(CONST INT index)
{
    HRESULT hr_ = E_FAIL;

    _ASSERT(NULL != m_controllerForce[index]);
    if (NULL == m_controllerForce[index])
        return E_FAIL;

    _ASSERT(NULL != m_controllerInput);
    if (NULL == m_controllerInput)
        return E_FAIL;

    // If no controller connected, or no ff, or car airborne, do nothing.
    if (m_controllerInput->HasForceFeedback(index) == FALSE
        || m_isAirborne[index] == TRUE)
    {
        return E_FAIL;
    }

    LogiSurfaceEffect* force_ = (LogiSurfaceEffect*)m_controllerForce[index]->GetForce(LG_FORCE_SURFACE_EFFECT);

    _ASSERT(NULL != force_);
    if (NULL == force_)
        return E_FAIL;

    if (force_->GetEffectHandle()== NULL)
        return E_FAIL;

    SurfaceEffectParams params_ = force_->GetCurrentForceParams();
    hr_ = force_->SetParameters(params_);

    if (!force_->IsPlaying())
        hr_ = force_->Start();

    return hr_;
}

LRESULT CALLBACK WheelWindowProc(HWND hwnd, UINT message,
                                WPARAM wParam, LPARAM lParam)
{
    BOOL activateValue_ = FALSE;

    DEV_BROADCAST_HDR* pHeader_ = NULL;

    switch (message)
    {
    case WM_ACTIVATEAPP:
        activateValue_ = static_cast<BOOL>(wParam);
        if (activateValue_)
        {
            g_forceActuatorsResetTriggered = GetTickCount();
        }
        /*else
        {
        }*/
        break;
    case WM_DEVICECHANGE:
        switch (wParam)
        {
        case DBT_DEVICEARRIVAL:
            //LOGICONTROLLERTRACE(_T("DBT_DEVICEARRIVAL\n"));
            pHeader_ = (DEV_BROADCAST_HDR*)lParam;
            if (pHeader_)
            {
                if (pHeader_->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
                {
                    g_forceActuatorsResetTriggered = GetTickCount();
                }
            }
            break;
        case DBT_DEVICEREMOVECOMPLETE:
            //LOGICONTROLLERTRACE(_T("DBT_DEVICEREMOVECOMPLETE\n"));

            pHeader_ = (DEV_BROADCAST_HDR*)lParam;
            if (pHeader_)
            {
                if (pHeader_->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
                {
                    g_forceActuatorsResetTriggered = GetTickCount();
                }
            }
            break;
        default:
            break;
        }
        break;
    default:
        break;
    }

    return CallWindowProc (g_OldWheelWnd, hwnd, message, wParam, lParam);
}