Method rumble

Engine/source/platformWin32/winDInputDevice.cpp:1044–1148

}

void DInputDevice::rumble(F32 x, F32 y)
{
   LONG            rglDirection[2] = { 0, 0 };
   DICONSTANTFORCE cf              = { 0 };
   HRESULT         result;

   // Now set the new parameters and start the effect immediately.
   if (!mForceFeedbackEffect)
   {
#ifdef LOG_INPUT
      Input::log("DInputDevice::rumbleJoystick - creating constant force feeback effect\n"); 
#endif
      DIEFFECT eff;
      ZeroMemory( &eff, sizeof(eff) );
      eff.dwSize                  = sizeof(DIEFFECT);
      eff.dwFlags                 = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
      eff.dwDuration              = INFINITE;
      eff.dwSamplePeriod          = 0;
      eff.dwGain                  = DI_FFNOMINALMAX;
      eff.dwTriggerButton         = DIEB_NOTRIGGER;
      eff.dwTriggerRepeatInterval = 0;
      eff.cAxes                   = mNumForceFeedbackAxes;
      eff.rgdwAxes                = mForceFeedbackAxes;
      eff.rglDirection            = rglDirection;
      eff.lpEnvelope              = 0;
      eff.cbTypeSpecificParams    = sizeof(DICONSTANTFORCE);
      eff.lpvTypeSpecificParams   = &cf;
      eff.dwStartDelay            = 0;

      // Create the prepared effect
      if ( FAILED( result = mDevice->CreateEffect( GUID_ConstantForce, &eff, &mForceFeedbackEffect, NULL ) ) )
      {
#ifdef LOG_INPUT
         Input::log( "DInputDevice::rumbleJoystick - %s does not support force feedback.\n", mName );
#endif
	      Con::errorf( "DInputDevice::rumbleJoystick - %s does not support force feedback.\n", mName );
	      return;
      }
      else
      {
#ifdef LOG_INPUT
         Input::log( "DInputDevice::rumbleJoystick - %s supports force feedback.\n", mName );
#endif
	      Con::printf( "DInputDevice::rumbleJoystick - %s supports force feedback.\n", mName );
      }
   }

   // Clamp the input floats to [0 - 1]
   x = max(0, min(1, x));
   y = max(0, min(1, y));

   if ( 1 == mNumForceFeedbackAxes )
   {
      cf.lMagnitude = (DWORD)( x * DI_FFNOMINALMAX );
   }
   else
   {
      rglDirection[0] = (DWORD)( x * DI_FFNOMINALMAX );