-// play the sample
-void SGSoundSample::play( bool _loop ) {
-
- if ( source ) {
- alSourceStop( source );
- }
-
- playing = bind_source();
- if ( playing ) {
- loop = _loop;
-
- alSourcei( source, AL_LOOPING, loop );
- alSourcePlay( source );
-
- print_openal_error("play (alSourcePlay)");
- }
-}
-
-
-// stop playing the sample
-void SGSoundSample::stop() {
- if (playing) {
- alSourceStop( source );
- alDeleteSources(1, &source);
- source = 0;
- print_openal_error("stop (alDeleteSources)");
- }
- playing = false;
-}
-
-// Generate sound source
-bool
-SGSoundSample::bind_source() {
-
- if ( playing ) {
- return true;
- }
-
- // Bind buffer with a source.
- alGetError();
- alGenSources(1, &source);
- if ( print_openal_error("bind_source (alGenSources)") ) {
- // No biggy, better luck next time.
- SG_LOG( SG_GENERAL, SG_ALERT, "Failed to generate audio source.");
- // SG_LOG( SG_GENERAL, SG_ALERT, "Please update your sound driver and try again.");
- return false;
- }
-
- alSourcei( source, AL_BUFFER, buffer );
- alSourcef( source, AL_PITCH, pitch );
- alSourcef( source, AL_GAIN, volume );
- alSourcefv( source, AL_POSITION, source_pos );
- alSourcefv( source, AL_DIRECTION, direction );
- alSourcef( source, AL_CONE_INNER_ANGLE, inner );
- alSourcef( source, AL_CONE_OUTER_ANGLE, outer );
- alSourcef( source, AL_CONE_OUTER_GAIN, outergain);
- alSourcefv( source, AL_VELOCITY, source_vel );
- alSourcei( source, AL_LOOPING, loop );
-
- alSourcei( source, AL_SOURCE_RELATIVE, AL_TRUE );
- alSourcef( source, AL_REFERENCE_DISTANCE, reference_dist );
- alSourcef( source, AL_MAX_DISTANCE, max_dist );
-
- print_openal_error("bind_sources return");
-
- return true;
-}
-
-void
-SGSoundSample::set_pitch( double p ) {
- // clamp in the range of 0.01 to 2.0
- if ( p < 0.01 ) { p = 0.01; }
- if ( p > 2.0 ) { p = 2.0; }
- pitch = p;
- if (playing) {
- alSourcef( source, AL_PITCH, pitch );
- print_openal_error("set_pitch");