//-----------------------------------------------------------------------------
// Purpose:
// Input : effectnum -
// params -
//-----------------------------------------------------------------------------
void CInput::ForceFeedback_Start( int effectnum, const FFBaseParams_t& params )
{
if ( !m_pFF || !m_pFF->m_bForceFeedbackAvailable )
return;
// Unpause system...
if ( m_pFF->m_bPaused )
{
ForceFeedback_Resume();
}
// look up the effect
FORCEFEEDBACK_t effect = (FORCEFEEDBACK_t)effectnum;
if ( effect < 0 || effect >= NUM_FORCE_FEEDBACK_PRESETS )
{
Assert( !"ForceFeedback_Start with bogus effectnum" );
return;
}
EffectMap_t *map = &g_EffectMap[ effectnum ];
vecEffectPtr_t *effects = map->pVecEffectPtr;
// Play the effects on the device
int c = effects->Count();
for ( int i = 0; i < c; ++i )
{
LPDIRECTINPUTEFFECT pEffect = (*effects)[ i ];
if ( !map->m_bDownloaded )
{
pEffect->Download();
map->m_bDownloaded = true;
}
DWORD flags = DIEP_DIRECTION | DIEP_GAIN | DIEP_DURATION;
LONG rglDirection[2] = { 0, 100 };
// Fill in parameters
DIEFFECT effect;
Q_memset( &effect, 0, sizeof( effect ) );
effect.dwSize = sizeof( effect );
effect.dwFlags = DIEFF_POLAR | DIEFF_OBJECTOFFSETS;
effect.rglDirection = rglDirection;
effect.cAxes = 2;
HRESULT hr = pEffect->GetParameters( &effect, flags );
if ( !FAILED( hr ) )
{
// If params.m_flDuration == 0.0f then that means use the duration in the file
if ( params.m_flDuration <= -0.999f )
{
effect.dwDuration = INFINITE;
}
else if( params.m_flDuration >= 0.001f )
{
// Convert to microsseconds
effect.dwDuration = (DWORD)( params.m_flDuration * 1000000.0f );
}
effect.dwGain = params.m_flGain * 10000.0f;
effect.rglDirection[ 0 ] = 100.0f * params.m_flDirection;
effect.rglDirection[ 1 ] = 0;
hr = pEffect->SetParameters( &effect, flags );
if ( !FAILED( hr ) )
{
pEffect->Start( 1, params.m_bSolo ? DIES_SOLO : 0 );
}
}
}
}
