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Added a --runway= option which can be used in conjunction with the --airport=

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option to specify a starting airport + specific runway.  If you don't specify
a runway, you get the one that's closest to your specified (or default)
heading.
This commit is contained in:
curt 2002-11-17 04:04:21 +00:00
parent 2384d0ed51
commit 13bb01a70e
2 changed files with 174 additions and 25 deletions
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194
src/Main/fg_init.cxx
View file

@ -647,16 +647,6 @@ static bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
"Attempting to set starting position from runway code "
<< id << " heading " << tgt_hdg );
// SGPath inpath( globals->get_fg_root() );
// inpath.append( "Airports" );
// inpath.append( "apt_simple" );
// airports.load( inpath.c_str() );
// SGPath outpath( globals->get_fg_root() );
// outpath.append( "Airports" );
// outpath.append( "simple.gdbm" );
// airports.dump_gdbm( outpath.c_str() );
if ( ! runways.search( id, &r ) ) {
SG_LOG( SG_GENERAL, SG_ALERT,
"Failed to find " << id << " in database." );
@ -756,6 +746,144 @@ static bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
}
// Set current_options lon/lat given an airport id and heading (degrees)
static bool fgSetPosFromAirportIDandRwy( const string& id, const string& rwy ) {
FGRunway r;
FGRunway found_r;
double heading = 0.0;
string runway;
// standardize input number
string tmp = rwy.substr(1, 1);
if ( tmp == "L" || tmp == "R" || tmp == "C" ) {
runway = "0";
runway += rwy;
} else {
runway = rwy;
}
if ( id.length() ) {
// set initial position from runway and heading
SGPath path( globals->get_fg_root() );
path.append( "Airports" );
path.append( "runways.mk4" );
FGRunways runways( path.c_str() );
SG_LOG( SG_GENERAL, SG_INFO,
"Attempting to set starting position for "
<< id << ":" << runway );
if ( ! runways.search( id, &r ) ) {
SG_LOG( SG_GENERAL, SG_ALERT,
"Failed to find " << id << " in database." );
return false;
}
while ( r.id == id ) {
// forward direction
if ( r.rwy_no == runway ) {
found_r = r;
heading = r.heading;
SG_LOG( SG_GENERAL, SG_INFO,
"Runway " << r.rwy_no << " heading = " << heading );
}
// calculate reciprocal runway number
string snum = r.rwy_no;
int len = snum.length();
string letter = "";
string rev_letter = "";
int i;
for ( i = 0; i < len; ++i ) {
string tmp = snum.substr(i, 1);
if ( tmp == "L" ) {
letter = "L";
rev_letter = "R";
} else if ( tmp == "R" ) {
letter = "R";
rev_letter = "L";
} else if ( tmp == "C" ) {
letter == "C";
rev_letter = "C";
}
}
for ( i = 0; i < len; ++i ) {
string tmp = snum.substr(i, 1);
if ( tmp == "L" || tmp == "R" || tmp == "C" || tmp == " " ) {
snum = snum.substr(0, i);
}
}
SG_LOG(SG_GENERAL, SG_DEBUG, "Runway num = '" << snum << "'");
int num = atoi( snum.c_str() ) + 18;
while ( num > 36 ) { num -= 36; }
while ( num <= 0 ) { num += 36; }
char recip_no[10];
snprintf( recip_no, 10, "%02d%s", num, rev_letter.c_str() );
// reverse direction
if ( (string)recip_no == runway ) {
found_r = r;
heading = r.heading + 180;
while ( heading > 360.0 ) { heading -= 360; }
SG_LOG( SG_GENERAL, SG_INFO,
"Runway " << r.rwy_no << " heading = " << heading );
}
runways.next( &r );
}
} else {
return false;
}
double lat2, lon2, az2;
double azimuth = heading + 180.0;
while ( azimuth >= 360.0 ) { azimuth -= 360.0; }
SG_LOG( SG_GENERAL, SG_INFO,
"runway = " << found_r.lon << ", " << found_r.lat
<< " length = " << found_r.length * SG_FEET_TO_METER * 0.5
<< " heading = " << azimuth );
geo_direct_wgs_84 ( 0, found_r.lat, found_r.lon,
azimuth, found_r.length * SG_FEET_TO_METER * 0.5 - 5.0,
&lat2, &lon2, &az2 );
if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON ) {
double olat, olon;
double odist = fgGetDouble("/sim/presets/offset-distance");
odist *= SG_NM_TO_METER;
double oaz = azimuth;
if ( fabs(fgGetDouble("/sim/presets/offset-azimuth")) > SG_EPSILON ) {
oaz = fgGetDouble("/sim/presets/offset-azimuth") + 180;
}
while ( oaz >= 360.0 ) { oaz -= 360.0; }
geo_direct_wgs_84 ( 0, lat2, lon2, oaz, odist, &olat, &olon, &az2 );
lat2=olat;
lon2=olon;
}
// presets
fgSetDouble("/sim/presets/longitude-deg", lon2 );
fgSetDouble("/sim/presets/latitude-deg", lat2 );
fgSetDouble("/sim/presets/heading-deg", heading );
// other code depends on the actual values being set ...
fgSetDouble("/position/longitude-deg", lon2 );
fgSetDouble("/position/latitude-deg", lat2 );
fgSetDouble("/orientation/heading-deg", heading );
SG_LOG( SG_GENERAL, SG_INFO,
"Position for " << id << " is ("
<< lon2 << ", "
<< lat2 << ") new heading is "
<< heading );
return true;
}
static void fgSetDistOrAltFromGlideSlope() {
double gs = fgGetDouble("/sim/presets/glideslope");
double od = fgGetDouble("/sim/presets/offset-distance");
@ -786,8 +914,11 @@ static void fgSetDistOrAltFromGlideSlope() {
// Set the initial position based on presets (or defaults)
bool fgInitPosition() {
// Calculate offset-distance or altitude relative to glide slope
// if either was not specified.
bool set_pos = false;
// If glideslope is specified, then calculate offset-distance or
// altitude relative to glide slope if either of those was not
// specified.
fgSetDistOrAltFromGlideSlope();
// If we have an explicit, in-range lon/lat, don't change it, just use it.
@ -801,25 +932,40 @@ bool fgInitPosition() {
if ( lon_deg >= -180.0 && lon_deg <= 180.0
&& lat_deg >= -90.0 && lat_deg <= 90.0 )
{
// valid lon/lat specified, use it.
} else {
string apt = fgGetString("/sim/presets/airport-id");
double hdg = fgGetDouble("/sim/presets/heading-deg");
if ( !apt.empty() ) {
// An airport id is requested, set position from that.
fgSetPosFromAirportIDandHdg( apt, hdg );
set_pos = true;
}
string apt = fgGetString("/sim/presets/airport-id");
string rwy_no = fgGetString("/sim/presets/runway");
double hdg = fgGetDouble("/sim/presets/heading-deg");
if ( !set_pos && !apt.empty() && !rwy_no.empty() ) {
// An airport + runway is requested
if ( fgSetPosFromAirportIDandRwy( apt, rwy_no ) ) {
// set tower position (a little off the heading for single
// runway airports)
fgSetTowerPosFromAirportID( apt, hdg );
} else {
// No lon/lat specified, no airport specified, default to
// middle of KSFO field.
fgSetDouble("/sim/presets/longitude-deg", -122.374843);
fgSetDouble("/sim/presets/latitude-deg", 37.619002);
set_pos = true;
}
}
if ( !set_pos && !apt.empty() ) {
if ( fgSetPosFromAirportIDandHdg( apt, hdg ) ) {
// set tower position (a little off the heading for single
// runway airports)
fgSetTowerPosFromAirportID( apt, hdg );
set_pos = true;
}
}
if ( !set_pos ) {
// No lon/lat specified, no airport specified, default to
// middle of KSFO field.
fgSetDouble("/sim/presets/longitude-deg", -122.374843);
fgSetDouble("/sim/presets/latitude-deg", 37.619002);
}
fgSetDouble( "/position/longitude-deg",
fgGetDouble("/sim/presets/longitude-deg") );
fgSetDouble( "/position/latitude-deg",

5
src/Main/options.cxx
View file

@ -681,9 +681,12 @@ parse_option (const string& arg)
fgSetBool("/sim/sound/audible", false);
} else if ( arg == "--enable-sound" ) {
fgSetBool("/sim/sound/audible", true);
} else if ( arg.find( "--airport=") == 0 ) {
fgSetString("/sim/presets/airport-id", arg.substr(10).c_str());
} else if ( arg.find( "--airport-id=") == 0 ) {
// NB: changed property name!!!
fgSetString("/sim/presets/airport-id", arg.substr(13).c_str());
} else if ( arg.find( "--runway=") == 0 ) {
fgSetString("/sim/presets/runway", arg.substr(9).c_str());
} else if ( arg.find( "--offset-distance=") == 0 ) {
fgSetDouble("/sim/presets/offset-distance", atof(arg.substr(18)));
} else if ( arg.find( "--offset-azimuth=") == 0 ) {