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Make several assumptions:

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1. The listener is always positioned at the origin.
2. All sounds eminate from the aircraft's model position.
3. Sound positions are relative to the listener location.
This commit is contained in:
curt 2004-04-27 20:49:00 +00:00
parent e252bcf0f3
commit 0aabc112b4
1 changed files with 71 additions and 31 deletions
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102
src/Main/main.cxx
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@ -1217,7 +1217,8 @@ static void fgMainLoop( void ) {
// Run audio scheduler
#ifdef ENABLE_AUDIO_SUPPORT
if ( fgGetBool("/sim/sound/audible")
&& globals->get_soundmgr()->is_working() ) {
&& globals->get_soundmgr()->is_working() )
{
globals->get_soundmgr()->update( delta_time_sec );
}
#endif
@ -1233,54 +1234,93 @@ static void fgMainLoop( void ) {
FGViewer *current_view = globals->get_current_view();
// get the location data for the primary FDM (now hardcoded to ac model)...
SGLocation * acmodel_location = 0;
acmodel_location = (SGLocation *) globals->get_aircraft_model()->get3DModel()->getSGLocation();
SGLocation *acmodel_loc = NULL;
acmodel_loc = (SGLocation *)globals->
get_aircraft_model()->get3DModel()->getSGLocation();
// update tile manager for FDM...
// ...only if location is different than the current-view location (to avoid duplicating effort)
// ...only if location is different than the current-view location
// (to avoid duplicating effort)
if( !fgGetBool("/sim/current-view/config/from-model") ) {
if( acmodel_location != 0 ) {
globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
visibility_meters );
globals->get_tile_mgr()->
update( acmodel_location, visibility_meters,
acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) );
// save results of update in SGLocation for fdm...
if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
acmodel_location->
set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
fgSetDouble("/position/ground-elev-m", globals->get_scenery()->get_cur_elev());
if( acmodel_loc != NULL ) {
globals->get_tile_mgr()->prep_ssg_nodes( acmodel_loc,
visibility_meters );
globals->get_tile_mgr()->
update( acmodel_loc, visibility_meters,
acmodel_loc->
get_absolute_view_pos(globals->
get_scenery()->get_center()) );
// save results of update in SGLocation for fdm...
if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
acmodel_loc->
set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
fgSetDouble("/position/ground-elev-m",
globals->get_scenery()->get_cur_elev());
}
acmodel_loc->
set_tile_center( globals->get_scenery()->get_next_center() );
}
acmodel_location->
set_tile_center( globals->get_scenery()->get_next_center() );
}
}
globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
visibility_meters );
// update tile manager for view...
// IMPORTANT!!! the tilemgr update for view location _must_ be done last
// after the FDM's until all of Flight Gear code references the viewer's location
// for elevation instead of the "scenery's" current elevation.
// IMPORTANT!!! the tilemgr update for view location _must_ be
// done last after the FDM's until all of Flight Gear code
// references the viewer's location for elevation instead of the
// "scenery's" current elevation.
SGLocation *view_location = globals->get_current_view()->getSGLocation();
globals->get_tile_mgr()->update( view_location, visibility_meters,
current_view->get_absolute_view_pos() );
// save results of update in SGLocation for fdm...
if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
current_view->getSGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
current_view->getSGLocation()->
set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
}
current_view->getSGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
current_view->getSGLocation()->
set_tile_center( globals->get_scenery()->get_next_center() );
// If fdm location is same as viewer's then we didn't do the update for fdm location
// above so we need to save the viewer results in the fdm SGLocation as well...
#ifdef ENABLE_AUDIO_SUPPORT
// Right now we make a simplifying assumption that the primary
// aircraft is the source of all sounds and that all sounds are
// positioned relative to the current view position.
static sgVec3 last_pos_offset;
// set positional offset for sources
sgVec3 source_pos_offset;
sgSubVec3( source_pos_offset,
view_location->get_view_pos(), acmodel_loc->get_view_pos() );
globals->get_soundmgr()->set_source_pos_all( source_pos_offset );
// set the velocity
sgVec3 source_vel;
sgSubVec3( source_vel, source_pos_offset, last_pos_offset );
sgScaleVec3( source_vel, delta_time_sec );
sgCopyVec3( last_pos_offset, source_pos_offset );
globals->get_soundmgr()->set_source_vel_all( source_vel );
// Right now we make a simplifying assumption that the listener is
// always positioned at the origin.
sgVec3 listener_pos;
sgSetVec3( listener_pos, 0.0, 0.0, 0.0 );
globals->get_soundmgr()->set_listener_pos( listener_pos );
#endif
// If fdm location is same as viewer's then we didn't do the
// update for fdm location above so we need to save the viewer
// results in the fdm SGLocation as well...
if( fgGetBool("/sim/current-view/config/from-model") ) {
if( acmodel_location != 0 ) {
if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
fgSetDouble("/position/ground-elev-m", globals->get_scenery()->get_cur_elev());
if( acmodel_loc != 0 ) {
if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
acmodel_loc->set_cur_elev_m( globals->get_scenery()->
get_cur_elev() );
fgSetDouble("/position/ground-elev-m",
globals->get_scenery()->get_cur_elev());
}
acmodel_loc->set_tile_center( globals->get_scenery()->
get_next_center() );
}
acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
}
}
// END Tile Manager udpates