bool GMESong::SetSubsong(int track)
{
if (CurrTrack == track)
{
return false;
}
return StartTrack(track);
}
void GMESong::Play(bool looping, int track)
{
m_Status = STATE_Stopped;
m_Looping = looping;
if (StartTrack(track) && m_Stream->Play(looping, 1))
{
m_Status = STATE_Playing;
}
}
int CheckGoTo(double desRA, double desDec, int pmodel)
{
double telra1, teldec1;
double errorRA, errorDec, nowRA, nowDec;
double tolra, toldec;
/* Is the telescope slewing? */
if ( GetSlewStatus() == 1 )
{
/* One or more axes remain in motion */
/* Try again later */
return(0);
}
/* Was this a two-phase slew? */
if ( slewphase == 2 )
{
/* Reset the slew phase and continue to the destination */
slewphase = 0;
/* Go to the original destination */
/* GoToCoords will change slewphase to 1 */
GoToCoords(desRA, desDec, pmodel);
/* Return a flag indicating a new goto operation is in progress */
return(0);
}
else if ( slewphase == 1 )
{
/* No axes are moving. Insure that tracking is started again. */
StartTrack();
/* Where are we now? */
GetTel(&nowRA, &nowDec, pmodel);
/* Compare to destination with pre-defined tolerances */
telra1 = desRA;
teldec1 = desDec;
/* RA slew tolerance in hours */
tolra = SLEWTOLRA;
/* Dec slew tolerance in degrees */
toldec = SLEWTOLDEC;
/* What is the absolute value of the pointing error? */
/* Magnitude of RA pointing error in hours */
errorRA = fabs(nowRA - telra1);
/* Magnitude of Dec pointing error in degrees */
errorDec = fabs(nowDec - teldec1);
/* Compare and notify whether we are within tolerance */
if( ( errorRA > tolra ) || ( errorDec > toldec ) )
{
/* Result of slew is outside acceptable tolerance */
/* Signal the calling routine that another goto may be needed */
slewphase = 0;
return(2);
}
}
else
{
/* Unexpected slew phase */
/* Reset and return success without a test */
/* This should clear errors and enable another slew request from the UI */
/* Better would be to flag an error but that might have unintended consequences */
slewphase = 0;
}
return(1);
}
