scenery: Really, most people don't care for the noise.

[simgear.git] / simgear / sound / sample_group.cxx

diff --git a/simgear/sound/sample_group.cxx b/simgear/sound/sample_group.cxx
index e48cd0ab2cc10978f9e12eaf4e8f17f317b5d65f..069f85df9dd557776171d3855c9fd77712a54b37 100644 (file)
--- a/simgear/sound/sample_group.cxx
+++ b/simgear/sound/sample_group.cxx
@@ -406,6 +406,19 @@ void SGSampleGroup::update_pos_and_orientation() {
         sample->set_rotation( ec2body );
         sample->set_position( position );
         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.
+        if (!_tied_to_listener) {
+            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 ((dist2 > max2) && !sample->test_out_of_range()) {
+                sample->set_out_of_range(true);
+            } else if ((dist2 < max2) && sample->test_out_of_range()) {
+                sample->set_out_of_range(false);
+            }
+        }
     }
 }