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Free OpenAL sounds of objects that are farther away than the max_distance.

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This commit is contained in:
Erik Hofman 2011-12-12 13:19:43 +01:00
parent cfdf992600
commit 8d3de8dee5
1 changed files with 11 additions and 0 deletions
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11
simgear/sound/sample_group.cxx
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@ -406,6 +406,17 @@ void SGSampleGroup::update_pos_and_orientation() {
sample->set_rotation( ec2body ); sample->set_rotation( ec2body );
sample->set_position( position ); sample->set_position( position );
sample->set_velocity( velocity ); sample->set_velocity( velocity );
// Test if a sample is farther away than max distance, if so
// stop the sound playback and free it's source.
float max2 = sample->get_max_dist() * sample->get_max_dist();
float dist2 = position[0]*position[0]
+ position[1]*position[1] + position[2]*position[2];
if (sample->is_playing() && (dist2 > max2)) {
sample->stop();
} else if (!sample->is_playing() && (dist2 < max2)) {
sample->play(sample->is_looping());
}
} }
} }