fly/flightgear
1
0
Fork 0
Code Activity

Traffic improvements.

Browse source 
Make landings and takeoffs look more correct; tweak climb-out and touchdown phases in particular, so the turn to destination heading occurs earlier on climb out, and touchdown occurs close the GS transmitter / some distance down the runway from the beginning.
This commit is contained in:
James Turner 2012-10-30 15:43:54 +00:00
parent 4e75587332
commit c79e2465df
12 changed files with 324 additions and 312 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
src/AIModel/AIAircraft.cxx
View file

@ -709,9 +709,9 @@ void FGAIAircraft::handleFirstWaypoint() {
setAltitude(prev->getAltitude());
if (prev->getSpeed() > 0.0)
setHeading(fp->getBearing(prev->getLatitude(), prev->getLongitude(), curr));
setHeading(fp->getBearing(prev, curr));
else
setHeading(fp->getBearing(curr->getLatitude(), curr->getLongitude(), prev));
setHeading(fp->getBearing(curr, prev));
// If next doesn't exist, as in incrementally created flightplans for
// AI/Trafficmanager created plans,
@ -799,7 +799,7 @@ bool FGAIAircraft::leadPointReached(FGAIWaypoint* curr) {
// << " Ground target speed " << groundTargetSpeed << endl;
double bearing = 0;
// don't do bearing calculations for ground traffic
bearing = getBearing(fp->getBearing(pos.getLatitudeDeg(), pos.getLongitudeDeg(), curr));
bearing = getBearing(fp->getBearing(pos, curr));
if (bearing < minBearing) {
minBearing = bearing;
if (minBearing < 10) {
@ -913,12 +913,11 @@ bool FGAIAircraft::handleAirportEndPoints(FGAIWaypoint* prev, time_t now) {
* @param curr
*/
void FGAIAircraft::controlHeading(FGAIWaypoint* curr) {
double calc_bearing = fp->getBearing(pos.getLatitudeDeg(), pos.getLongitudeDeg(), curr);
double calc_bearing = fp->getBearing(pos, curr);
//cerr << "Bearing = " << calc_bearing << endl;
if (speed < 0) {
calc_bearing +=180;
if (calc_bearing > 360)
calc_bearing -= 360;
SG_NORMALIZE_RANGE(calc_bearing, 0.0, 360.0);
}
if (finite(calc_bearing)) {
@ -1023,19 +1022,6 @@ void FGAIAircraft::updatePrimaryTargetValues(bool& flightplanActive, bool& aiOut
}
}
void FGAIAircraft::updatePosition() {
// convert speed to degrees per second
double speed_north_deg_sec = cos( hdg * SGD_DEGREES_TO_RADIANS )
* speed * 1.686 / ft_per_deg_lat;
double speed_east_deg_sec = sin( hdg * SGD_DEGREES_TO_RADIANS )
* speed * 1.686 / ft_per_deg_lon;
// set new position
pos.setLatitudeDeg( pos.getLatitudeDeg() + speed_north_deg_sec * dt);
pos.setLongitudeDeg( pos.getLongitudeDeg() + speed_east_deg_sec * dt);
}
void FGAIAircraft::updateHeading() {
// adjust heading based on current bank angle
if (roll == 0.0)
@ -1181,13 +1167,9 @@ void FGAIAircraft::updateVerticalSpeedTarget() {
// find target vertical speed
if (use_perf_vs) {
if (altitude_ft < tgt_altitude_ft) {
tgt_vs = tgt_altitude_ft - altitude_ft;
if (tgt_vs > _performance->climbRate())
tgt_vs = _performance->climbRate();
tgt_vs = std::min(tgt_altitude_ft - altitude_ft, _performance->climbRate());
} else {
tgt_vs = tgt_altitude_ft - altitude_ft;
if (tgt_vs < (-_performance->descentRate()))
tgt_vs = -_performance->descentRate();
tgt_vs = std::max(tgt_altitude_ft - altitude_ft, -_performance->descentRate());
}
} else {
double vert_dist_ft = fp->getCurrentWaypoint()->getCrossat() - altitude_ft;
@ -1265,7 +1247,9 @@ void FGAIAircraft::handleATCRequests() {
void FGAIAircraft::updateActualState() {
//update current state
//TODO have a single tgt_speed and check speed limit on ground on setting tgt_speed
updatePosition();
double distance = speed * SG_KT_TO_MPS * dt;
pos = SGGeodesy::direct(pos, hdg, distance);
if (onGround())
speed = _performance->actualSpeed(this, groundTargetSpeed, dt, holdPos);

1
src/AIModel/AIAircraft.hxx
View file

@ -148,7 +148,6 @@ private:
void updatePrimaryTargetValues(bool& flightplanActive, bool& aiOutOfSight);
void updateSecondaryTargetValues();
void updatePosition();
void updateHeading();
void updateBankAngleTarget();
void updateVerticalSpeedTarget();

228
src/AIModel/AIFlightPlan.cxx
View file

@ -34,6 +34,7 @@
#include <Main/fg_props.hxx>
#include <Main/fg_init.hxx>
#include <Airports/simple.hxx>
#include <Airports/dynamics.hxx>
#include <Airports/runways.hxx>
#include <Airports/groundnetwork.hxx>
@ -124,45 +125,8 @@ FGAIFlightPlan::FGAIFlightPlan(const string& filename)
lastNodeVisited = 0;
taxiRoute = 0;
SGPath path( globals->get_fg_root() );
path.append( ("/AI/FlightPlans/" + filename).c_str() );
SGPropertyNode root;
try {
readProperties(path.str(), &root);
} catch (const sg_exception &) {
SG_LOG(SG_AI, SG_ALERT,
"Error reading AI flight plan: " << path.str());
// cout << path.str() << endl;
return;
}
SGPropertyNode * node = root.getNode("flightplan");
for (int i = 0; i < node->nChildren(); i++) {
//cout << "Reading waypoint " << i << endl;
FGAIWaypoint* wpt = new FGAIWaypoint;
SGPropertyNode * wpt_node = node->getChild(i);
wpt->setName (wpt_node->getStringValue("name", "END" ));
wpt->setLatitude (wpt_node->getDoubleValue("lat", 0 ));
wpt->setLongitude (wpt_node->getDoubleValue("lon", 0 ));
wpt->setAltitude (wpt_node->getDoubleValue("alt", 0 ));
wpt->setSpeed (wpt_node->getDoubleValue("ktas", 0 ));
wpt->setCrossat (wpt_node->getDoubleValue("crossat", -10000 ));
wpt->setGear_down (wpt_node->getBoolValue("gear-down", false ));
wpt->setFlaps_down (wpt_node->getBoolValue("flaps-down", false ));
wpt->setOn_ground (wpt_node->getBoolValue("on-ground", false ));
wpt->setTime_sec (wpt_node->getDoubleValue("time-sec", 0 ));
wpt->setTime (wpt_node->getStringValue("time", "" ));
if (wpt->getName() == "END") wpt->setFinished(true);
else wpt->setFinished(false);
pushBackWaypoint( wpt );
}
wpt_iterator = waypoints.begin();
isValid = true;
//cout << waypoints.size() << " waypoints read." << endl;
isValid = parseProperties(filename);
}
@ -186,7 +150,9 @@ FGAIFlightPlan::FGAIFlightPlan(FGAIAircraft *ac,
double speed,
const string& fltType,
const string& acType,
const string& airline)
const string& airline) :
departure(dep),
arrival(arr)
{
sid = 0;
repeat = false;
@ -199,99 +165,110 @@ FGAIFlightPlan::FGAIFlightPlan(FGAIAircraft *ac,
lastNodeVisited = 0;
taxiRoute = 0;
SGPath path( globals->get_fg_root() );
path.append( "/AI/FlightPlans" );
path.append( p );
SGPropertyNode root;
isValid = true;
// This is a bit of a hack:
// Normally the value of course will be used to evaluate whether
// or not a waypoint will be used for midair initialization of
// an AI aircraft. However, if a course value of 999 will be passed
// when an update request is received, which will by definition always be
// on the ground and should include all waypoints.
// bool useInitialWayPoint = true;
// bool useCurrentWayPoint = false;
// if (course == 999)
// {
// useInitialWayPoint = false;
// useCurrentWayPoint = true;
// }
if (path.exists())
{
try
{
readProperties(path.str(), &root);
SGPropertyNode * node = root.getNode("flightplan");
//pushBackWaypoint( init_waypoint );
for (int i = 0; i < node->nChildren(); i++) {
//cout << "Reading waypoint " << i << endl;
FGAIWaypoint* wpt = new FGAIWaypoint;
SGPropertyNode * wpt_node = node->getChild(i);
wpt->setName (wpt_node->getStringValue("name", "END" ));
wpt->setLatitude (wpt_node->getDoubleValue("lat", 0 ));
wpt->setLongitude (wpt_node->getDoubleValue("lon", 0 ));
wpt->setAltitude (wpt_node->getDoubleValue("alt", 0 ));
wpt->setSpeed (wpt_node->getDoubleValue("ktas", 0 ));
wpt->setCrossat (wpt_node->getDoubleValue("crossat", -10000 ));
wpt->setGear_down (wpt_node->getBoolValue("gear-down", false ));
wpt->setFlaps_down (wpt_node->getBoolValue("flaps-down", false ));
if (wpt->getName() == "END") wpt->setFinished(true);
else wpt->setFinished(false);
pushBackWaypoint(wpt);
} // of node loop
wpt_iterator = waypoints.begin();
} catch (const sg_exception &e) {
SG_LOG(SG_AI, SG_WARN, "Error reading AI flight plan: " <<
e.getMessage() << " from " << e.getOrigin());
}
if (parseProperties(p)) {
isValid = true;
} else {
// cout << path.str() << endl;
// cout << "Trying to create this plan dynamically" << endl;
// cout << "Route from " << dep->id << " to " << arr->id << endl;
time_t now = time(NULL) + fgGetLong("/sim/time/warp");
time_t timeDiff = now-start;
leg = 1;
if ((timeDiff > 60) && (timeDiff < 1500))
leg = 2;
//else if ((timeDiff >= 1200) && (timeDiff < 1500)) {
//leg = 3;
//ac->setTakeOffStatus(2);
//}
else if ((timeDiff >= 1500) && (timeDiff < 2000))
leg = 4;
else if (timeDiff >= 2000)
leg = 5;
/*
if (timeDiff >= 2000)
leg = 5;
*/
SG_LOG(SG_AI, SG_INFO, "Route from " << dep->getId() << " to " << arr->getId() << ". Set leg to : " << leg << " " << ac->getTrafficRef()->getCallSign());
wpt_iterator = waypoints.begin();
bool dist = 0;
isValid = create(ac, dep,arr, leg, alt, speed, lat, lon,
firstLeg, radius, fltType, acType, airline, dist);
wpt_iterator = waypoints.begin();
}
createWaypoints(ac, course, start, dep, arr, firstLeg, radius,
alt, lat, lon, speed, fltType, acType, airline);
}
}
FGAIFlightPlan::~FGAIFlightPlan()
{
deleteWaypoints();
delete taxiRoute;
// if we're parked at a gate, release it
if (gateId >= 0) {
FGAirport* apt = (leg >= 7) ? arrival : departure;
if (apt) {
SG_LOG(SG_AI, SG_INFO, "releasing parking gate " << gateId << " at " << apt->ident());
apt->getDynamics()->releaseParking(gateId);
}
}
}
void FGAIFlightPlan::createWaypoints(FGAIAircraft *ac,
double course,
time_t start,
FGAirport *dep,
FGAirport *arr,
bool firstLeg,
double radius,
double alt,
double lat,
double lon,
double speed,
const string& fltType,
const string& acType,
const string& airline)
{
time_t now = time(NULL) + fgGetLong("/sim/time/warp");
time_t timeDiff = now-start;
leg = 1;
if ((timeDiff > 60) && (timeDiff < 1500))
leg = 2;
//else if ((timeDiff >= 1200) && (timeDiff < 1500)) {
//leg = 3;
//ac->setTakeOffStatus(2);
//}
else if ((timeDiff >= 1500) && (timeDiff < 2000))
leg = 4;
else if (timeDiff >= 2000)
leg = 5;
/*
if (timeDiff >= 2000)
leg = 5;
*/
SG_LOG(SG_AI, SG_INFO, "Route from " << dep->getId() << " to " << arr->getId() << ". Set leg to : " << leg << " " << ac->getTrafficRef()->getCallSign());
wpt_iterator = waypoints.begin();
bool dist = 0;
isValid = create(ac, dep, arr, leg, alt, speed, lat, lon,
firstLeg, radius, fltType, acType, airline, dist);
wpt_iterator = waypoints.begin();
}
bool FGAIFlightPlan::parseProperties(const std::string& filename)
{
SGPath path( globals->get_fg_root() );
path.append( "/AI/FlightPlans/" + filename );
if (!path.exists()) {
return false;
}
SGPropertyNode root;
try {
readProperties(path.str(), &root);
} catch (const sg_exception &e) {
SG_LOG(SG_AI, SG_ALERT, "Error reading AI flight plan: " << path.str()
<< "message:" << e.getFormattedMessage());
return false;
}
SGPropertyNode * node = root.getNode("flightplan");
for (int i = 0; i < node->nChildren(); i++) {
FGAIWaypoint* wpt = new FGAIWaypoint;
SGPropertyNode * wpt_node = node->getChild(i);
wpt->setName (wpt_node->getStringValue("name", "END" ));
wpt->setLatitude (wpt_node->getDoubleValue("lat", 0 ));
wpt->setLongitude (wpt_node->getDoubleValue("lon", 0 ));
wpt->setAltitude (wpt_node->getDoubleValue("alt", 0 ));
wpt->setSpeed (wpt_node->getDoubleValue("ktas", 0 ));
wpt->setCrossat (wpt_node->getDoubleValue("crossat", -10000 ));
wpt->setGear_down (wpt_node->getBoolValue("gear-down", false ));
wpt->setFlaps_down (wpt_node->getBoolValue("flaps-down", false ));
wpt->setOn_ground (wpt_node->getBoolValue("on-ground", false ));
wpt->setTime_sec (wpt_node->getDoubleValue("time-sec", 0 ));
wpt->setTime (wpt_node->getStringValue("time", "" ));
wpt->setFinished ((wpt->getName() == "END"));
pushBackWaypoint( wpt );
}
wpt_iterator = waypoints.begin();
return true;
}
FGAIWaypoint* const FGAIFlightPlan::getPreviousWaypoint( void ) const
{
@ -425,10 +402,9 @@ double FGAIFlightPlan::getBearing(FGAIWaypoint* first, FGAIWaypoint* second) con
return SGGeodesy::courseDeg(first->getPos(), second->getPos());
}
double FGAIFlightPlan::getBearing(double lat, double lon, FGAIWaypoint* wp) const
double FGAIFlightPlan::getBearing(const SGGeod& aPos, FGAIWaypoint* wp) const
{
return SGGeodesy::courseDeg(SGGeod::fromDeg(lon, lat), wp->getPos());
return SGGeodesy::courseDeg(aPos, wp->getPos());
}
void FGAIFlightPlan::deleteWaypoints()

39
src/AIModel/AIFlightPlan.hxx
View file

@ -19,16 +19,21 @@
#ifndef _FG_AIFLIGHTPLAN_HXX
#define _FG_AIFLIGHTPLAN_HXX
#include <simgear/compiler.h>
#include <vector>
#include <string>
#include <simgear/math/SGMath.hxx>
#include <simgear/compiler.h>
#include <simgear/math/SGMath.hxx>
#include <simgear/structure/SGSharedPtr.hxx>
// forward decls
class FGTaxiRoute;
class FGRunway;
class FGAIAircraft;
class FGAirport;
typedef SGSharedPtr<FGAirport> FGAirportRef;
class FGAIWaypoint {
private:
std::string name;
@ -121,7 +126,8 @@ public:
void setLeadDistance(double distance_ft);
double getLeadDistance( void ) const {return lead_distance;}
double getBearing(FGAIWaypoint* previous, FGAIWaypoint* next) const;
double getBearing(double lat, double lon, FGAIWaypoint* next) const;
double getBearing(const SGGeod& aPos, FGAIWaypoint* next) const;
double checkTrackLength(std::string wptName);
time_t getStartTime() const { return start_time; }
time_t getArrivalTime() const { return arrivalTime; }
@ -187,9 +193,10 @@ private:
FGTaxiRoute *taxiRoute;
std::string name;
bool isValid;
FGAirportRef departure, arrival;
void createPushBackFallBack(FGAIAircraft *, bool, FGAirport*, double radius, const std::string&, const std::string&, const std::string&);
bool createClimb(FGAIAircraft *, bool, FGAirport *, double, double, const std::string&);
bool createClimb(FGAIAircraft *, bool, FGAirport *, FGAirport* arrival, double, double, const std::string&);
bool createCruise(FGAIAircraft *, bool, FGAirport*, FGAirport*, double, double, double, double, const std::string&);
bool createDescent(FGAIAircraft *, FGAirport *, double latitude, double longitude, double speed, double alt,const std::string&, double distance);
bool createLanding(FGAIAircraft *, FGAirport *, const std::string&);
@ -214,6 +221,28 @@ private:
//void createCruiseFallback(bool, FGAirport*, FGAirport*, double, double, double, double);
void evaluateRoutePart(double deplat, double deplon, double arrlat, double arrlon);
/**
* look for and parse an PropertyList flight-plan file - essentially
* a flat list waypoint objects, encoded to properties
*/
bool parseProperties(const std::string& filename);
void createWaypoints(FGAIAircraft *ac,
double course,
time_t start,
FGAirport *dep,
FGAirport *arr,
bool firstLeg,
double radius,
double alt,
double lat,
double lon,
double speed,
const std::string& fltType,
const std::string& acType,
const std::string& airline);
public:
wpt_vector_iterator getFirstWayPoint() { return waypoints.begin(); };
wpt_vector_iterator getLastWayPoint() { return waypoints.end(); };

252
src/AIModel/AIFlightPlanCreate.cxx
View file

@ -38,6 +38,7 @@
#include <Environment/environment_mgr.hxx>
#include <Environment/environment.hxx>
#include <FDM/LaRCsim/basic_aero.h>
#include <Navaids/navrecord.hxx>
/* FGAIFlightPlan::create()
@ -78,7 +79,7 @@ bool FGAIFlightPlan::create(FGAIAircraft * ac, FGAirport * dep,
retVal = createTakeOff(ac, firstFlight, dep, speed, fltType);
break;
case 4:
retVal = createClimb(ac, firstFlight, dep, speed, alt, fltType);
retVal = createClimb(ac, firstFlight, dep, arr, speed, alt, fltType);
break;
case 5:
retVal = createCruise(ac, firstFlight, dep, arr, latitude, longitude, speed,
@ -460,20 +461,18 @@ bool FGAIFlightPlan::createTakeOff(FGAIAircraft * ac, bool firstFlight,
const string & fltType)
{
const double ACCEL_POINT = 105.0;
const double KNOTS_HOUR_TO_MSEC = SG_NM_TO_METER / 3600.0;
// climb-out angle in degrees. could move this to the perf-db but this
// value is pretty sane
const double INITIAL_PITCH_ANGLE = 12.5;
const double INITIAL_PITCH_ANGLE = 10.0;
double accel = ac->getPerformance()->acceleration();
double vTaxi = ac->getPerformance()->vTaxi();
double vRotate = ac->getPerformance()->vRotate();
double vTakeoff = ac->getPerformance()->vTakeoff();
double accelMetric = accel * KNOTS_HOUR_TO_MSEC;
double vTaxiMetric = vTaxi * KNOTS_HOUR_TO_MSEC;
double vRotateMetric = vRotate * KNOTS_HOUR_TO_MSEC;
double vTakeoffMetric = vTakeoff * KNOTS_HOUR_TO_MSEC;
double accelMetric = accel * SG_KT_TO_MPS;
double vTaxiMetric = vTaxi * SG_KT_TO_MPS;
double vRotateMetric = vRotate * SG_KT_TO_MPS;
FGAIWaypoint *wpt;
// Get the current active runway, based on code from David Luff
@ -498,7 +497,8 @@ bool FGAIFlightPlan::createTakeOff(FGAIAircraft * ac, bool firstFlight,
wpt = createOnGround(ac, "rotate", accelPoint, airportElev, vTakeoff);
pushBackWaypoint(wpt);
double vRef = vTakeoffMetric + 20; // climb-out at v2 + 20kts
double vRef = vTakeoff + 20; // climb-out at v2 + 20kts
double gearUpDist = d + pitchDistance(INITIAL_PITCH_ANGLE, 400 * SG_FEET_TO_METER);
accelPoint = rwy->pointOnCenterline(gearUpDist);
@ -509,14 +509,22 @@ bool FGAIFlightPlan::createTakeOff(FGAIAircraft * ac, bool firstFlight,
wpt->setGear_down(false);
pushBackWaypoint(wpt);
// limit climbout speed to 240kts below 10000'
double vClimbBelow10000 = std::min(240.0, ac->getPerformance()->vClimb());
// create two climb-out points. This is important becuase the first climb point will
// be a (sometimes large) turn towards the destination, and we don't want to
// commence that turn below 2000'
double climbOut = d + pitchDistance(INITIAL_PITCH_ANGLE, 2000 * SG_FEET_TO_METER);
accelPoint = rwy->pointOnCenterline(climbOut);
wpt = createInAir(ac, "2000'", accelPoint, airportElev + 2000, vRef);
wpt = createInAir(ac, "2000'", accelPoint, airportElev + 2000, vClimbBelow10000);
pushBackWaypoint(wpt);
climbOut = d + pitchDistance(INITIAL_PITCH_ANGLE, 2500 * SG_FEET_TO_METER);
accelPoint = rwy->pointOnCenterline(climbOut);
wpt = createInAir(ac, "2500'", accelPoint, airportElev + 2500, vClimbBelow10000);
pushBackWaypoint(wpt);
// as soon as we pass 2000', hand off to departure so the next acft can line up
// ideally the next aircraft would be able to line-up + hold but that's tricky
// with the current design.
return true;
}
@ -525,14 +533,14 @@ bool FGAIFlightPlan::createTakeOff(FGAIAircraft * ac, bool firstFlight,
* initialize the Aircraft at the parking location
******************************************************************/
bool FGAIFlightPlan::createClimb(FGAIAircraft * ac, bool firstFlight,
FGAirport * apt, double speed, double alt,
FGAirport * apt, FGAirport* arrival,
double speed, double alt,
const string & fltType)
{
FGAIWaypoint *wpt;
// bool planLoaded = false;
string fPLName;
// string fPLName;
double vClimb = ac->getPerformance()->vClimb();
if (firstFlight) {
string rwyClass = getRunwayClassFromTrafficType(fltType);
double heading = ac->getTrafficRef()->getCourse();
@ -546,18 +554,23 @@ bool FGAIFlightPlan::createClimb(FGAIAircraft * ac, bool firstFlight,
//cerr << " Cloning waypoint " << endl;
}
} else {
FGRunway * rwy = apt->getRunwayByIdent(activeRunway);
assert( rwy != NULL );
SGGeod climb1 = rwy->pointOnCenterline(10 * SG_NM_TO_METER);
FGRunway* runway = apt->getRunwayByIdent(activeRunway);
SGGeod cur = runway->end();
if (!waypoints.empty()) {
cur = waypoints.back()->getPos();
}
// compute course towards destination
double course = SGGeodesy::courseDeg(cur, arrival->geod());
SGGeod climb1 = SGGeodesy::direct(cur, course, 10 * SG_NM_TO_METER);
wpt = createInAir(ac, "10000ft climb", climb1, 10000, vClimb);
wpt->setGear_down(true);
wpt->setFlaps_down(true);
pushBackWaypoint(wpt);
SGGeod climb2 = rwy->pointOnCenterline(20 * SG_NM_TO_METER);
wpt = cloneWithPos(ac, wpt, "18000ft climb", climb2);
wpt->setAltitude(18000);
SGGeod climb2 = SGGeodesy::direct(cur, course, 20 * SG_NM_TO_METER);
wpt = createInAir(ac, "18000ft climb", climb2, 18000, vClimb);
pushBackWaypoint(wpt);
}
return true;
@ -580,8 +593,6 @@ bool FGAIFlightPlan::createDescent(FGAIAircraft * ac, FGAirport * apt,
FGAIWaypoint *wpt;
double vDescent = ac->getPerformance()->vDescent();
double vApproach = ac->getPerformance()->vApproach();
double vTouchdown = ac->getPerformance()->vTouchdown();
//Beginning of Descent
string rwyClass = getRunwayClassFromTrafficType(fltType);
@ -827,34 +838,7 @@ bool FGAIFlightPlan::createDescent(FGAIAircraft * ac, FGAirport * apt,
// The approach leg should bring the aircraft to approximately 4-6 nm out, after which the landing phase should take over.
//cerr << "Phase 3: Approach" << endl;
double tgt_speed = vApproach;
distanceOut -= distanceCovered;
double touchDownPoint = 0; //(rwy->lengthM() * 0.1);
for (int i = 1; i < nPoints; i++) {
SGGeod result;
double currentDist = i * (distanceOut / nPoints);
//double currentAltitude =
// apt->getElevation() + 2000 - (i * 2000 / (nPoints-1));
double alt = currentAltitude - (i * 2000 / (nPoints - 1));
snprintf(buffer, 16, "final%03d", i);
result = rwy->pointOnCenterline((-distanceOut) + currentDist + touchDownPoint);
if (i == nPoints - 30) {
tgt_speed = vTouchdown;
}
wpt = createInAir(ac, buffer, result, alt, tgt_speed);
wpt->setCrossat(alt);
wpt->setTrackLength((distanceOut / nPoints));
// account for the extra distance due to an extended downwind leg
if (i == 1) {
wpt->setTrackLength(wpt->getTrackLength() + distanceCovered);
}
//cerr << "Track Length : " << wpt->trackLength;
pushBackWaypoint(wpt);
//if (apt->ident() == fgGetString("/sim/presets/airport-id")) {
// cerr << " Position : " << result.getLatitudeDeg() << " " << result.getLongitudeDeg() << " " << currentAltitude << " " << apt->getElevation() << " " << distanceOut << endl;
//}
}
//cerr << "Done" << endl;
// Erase the two bogus BOD points: Note check for conflicts with scripted AI flightPlans
@ -885,10 +869,31 @@ bool FGAIFlightPlan::createDescent(FGAIAircraft * ac, FGAirport * apt,
ac->resetPositionFromFlightPlan();
}
waypoints[1]->setName( (waypoints[1]->getName() + string("legend")));
waypoints.back()->setName(waypoints.back()->getName() + "LandingThreshold");
return true;
}
/**
* compute the distance along the centerline, to the ILS glideslope
* transmitter. Return -1 if there's no GS for the runway
*/
static double runwayGlideslopeTouchdownDistance(FGRunway* rwy)
{
FGNavRecord* gs = rwy->glideslope();
if (!gs) {
return -1;
}
SGVec3d runwayPosCart = SGVec3d::fromGeod(rwy->pointOnCenterline(0.0));
// compute a unit vector in ECF cartesian space, from the runway beginning to the end
SGVec3d runwayDirectionVec = normalize(SGVec3d::fromGeod(rwy->end()) - runwayPosCart);
SGVec3d gsTransmitterVec = gs->cart() - runwayPosCart;
// project the gsTransmitterVec along the runwayDirctionVec to get out
// final value (in metres)
double dist = dot(runwayDirectionVec, gsTransmitterVec);
return dist;
}
/*******************************************************************
* CreateLanding
* Create a flight path from the "permision to land" point (currently
@ -902,108 +907,81 @@ bool FGAIFlightPlan::createLanding(FGAIAircraft * ac, FGAirport * apt,
double vTouchdown = ac->getPerformance()->vTouchdown();
double vTaxi = ac->getPerformance()->vTaxi();
double decel = ac->getPerformance()->deceleration() * 1.4;
double vApproach = ac->getPerformance()->vApproach();
double vTouchdownMetric = (vTouchdown * SG_NM_TO_METER) / 3600;
double vTaxiMetric = (vTaxi * SG_NM_TO_METER) / 3600;
double decelMetric = (decel * SG_NM_TO_METER) / 3600;
//string rwyClass = getRunwayClassFromTrafficType(fltType);
//double heading = ac->getTrafficRef()->getCourse();
//apt->getDynamics()->getActiveRunway(rwyClass, 2, activeRunway, heading);
//rwy = apt->getRunwayByIdent(activeRunway);
FGAIWaypoint *wpt;
//double aptElev = apt->getElevation();
double currElev = 0;
char buffer[12];
FGRunway * rwy = apt->getRunwayByIdent(activeRunway);
assert( rwy != NULL );
SGGeod refPoint = rwy->pointOnCenterline(0);
FGTaxiNode *tn = 0;
if (apt->getDynamics()->getGroundNetwork()) {
int node = apt->getDynamics()->getGroundNetwork()->findNearestNode(refPoint);
tn = apt->getDynamics()->getGroundNetwork()->findNode(node);
SGGeod threshold = rwy->threshold();
double currElev = threshold.getElevationFt();
double touchdownDistance = runwayGlideslopeTouchdownDistance(rwy);
if (touchdownDistance < 0.0) {
double landingLength = rwy->lengthM() - (rwy->displacedThresholdM());
// touchdown 25% of the way along the landing area
touchdownDistance = rwy->displacedThresholdM() + (landingLength * 0.25);
}
if (tn) {
currElev = tn->getElevationFt(apt->getElevation());
} else {
currElev = apt->getElevation();
}
SGGeod coord;
/*double distanceOut = rwy->lengthM() * .1;
double nPoints = 20;
for (int i = 1; i < nPoints; i++) {
snprintf(buffer, 12, "flare%d", i);
double currentDist = i * (distanceOut / nPoints);
double currentAltitude = apt->getElevation() + 20 - (i * 20 / nPoints);
coord = rwy->pointOnCenterline((currentDist * (i / nPoints)));
wpt = createInAir(ac, buffer, coord, currentAltitude, (vTouchdown));
}*/
double rolloutDistance =
(vTouchdownMetric * vTouchdownMetric - vTaxiMetric * vTaxiMetric) / (2 * decelMetric);
//cerr << " touchdown speed = " << vTouchdown << ". Rollout distance " << rolloutDistance << endl;
// find glideslope entry point, 2000' above touchdown elevation
double glideslopeEntry = -((2000 * SG_FEET_TO_METER) / tan(3.0)) + touchdownDistance;
FGAIWaypoint *wpt = createInAir(ac, "Glideslope begin", rwy->pointOnCenterline(glideslopeEntry),
currElev + 2000, vApproach);
pushBackWaypoint(wpt);
// deceleration point, 500' above touchdown elevation - slow from approach speed
// to touchdown speed
double decelPoint = -((500 * SG_FEET_TO_METER) / tan(3.0)) + touchdownDistance;
wpt = createInAir(ac, "500' decel", rwy->pointOnCenterline(decelPoint),
currElev + 2000, vTouchdown);
pushBackWaypoint(wpt);
// compute elevation above the runway start, based on a 3-degree glideslope
double heightAboveRunwayStart = touchdownDistance *
tan(3.0 * SG_DEGREES_TO_RADIANS) * SG_METER_TO_FEET;
wpt = createInAir(ac, "CrossThreshold", rwy->begin(),
heightAboveRunwayStart + currElev, vTouchdown);
pushBackWaypoint(wpt);
double rolloutDistance = accelDistance(vTouchdownMetric, vTaxiMetric, decelMetric);
int nPoints = 50;
for (int i = 1; i < nPoints; i++) {
snprintf(buffer, 12, "landing03%d", i);
coord = rwy->pointOnCenterline((rolloutDistance * ((double) i / (double) nPoints)));
wpt = createOnGround(ac, buffer, coord, currElev, 2*vTaxi);
double t = ((double) i) / nPoints;
coord = rwy->pointOnCenterline(touchdownDistance + (rolloutDistance * t));
double vel = (vTouchdownMetric * (1.0 - t)) + (vTaxiMetric * t);
wpt = createOnGround(ac, buffer, coord, currElev, vel);
wpt->setCrossat(currElev);
pushBackWaypoint(wpt);
}
wpt->setSpeed(vTaxi);
double mindist = 1.1 * rolloutDistance;
double maxdist = rwy->lengthM();
//cerr << "Finding nearest exit" << endl;
double mindist = (1.1 * rolloutDistance) + touchdownDistance;
FGGroundNetwork *gn = apt->getDynamics()->getGroundNetwork();
if (gn) {
double min = 0;
for (int i = ceil(mindist); i < floor(maxdist); i++) {
coord = rwy->pointOnCenterline(mindist);
int nodeId = 0;
if (gn->getVersion() > 0) {
nodeId = gn->findNearestNodeOnRunway(coord);
} else {
nodeId = gn->findNearestNode(coord);
}
if (tn)
tn = gn->findNode(nodeId);
if (!tn)
break;
double dist = SGGeodesy::distanceM(coord, tn->geod());
if (dist < (min + 0.75)) {
break;
}
min = dist;
}
if (tn) {
wpt = createOnGround(ac, buffer, tn->geod(), currElev, vTaxi);
pushBackWaypoint(wpt);
}
if (!gn) {
return true;
}
coord = rwy->pointOnCenterline(mindist);
int nodeId = 0;
if (gn->getVersion() > 0) {
nodeId = gn->findNearestNodeOnRunway(coord, rwy);
} else {
nodeId = gn->findNearestNode(coord);
}
FGTaxiNode* tn = gn->findNode(nodeId);
if (tn) {
wpt = createOnGround(ac, buffer, tn->geod(), currElev, vTaxi);
pushBackWaypoint(wpt);
}
//cerr << "Done. " << endl;
/*
//Runway Threshold
wpt = createOnGround(ac, "Threshold", rwy->threshold(), aptElev, vTouchdown);
wpt->crossat = apt->getElevation();
pushBackWaypoint(wpt);
// Roll-out
wpt = createOnGround(ac, "Center", rwy->geod(), aptElev, vTaxi*2);
pushBackWaypoint(wpt);
SGGeod rollOut = rwy->pointOnCenterline(rwy->lengthM() * 0.9);
wpt = createOnGround(ac, "Roll Out", rollOut, aptElev, vTaxi);
wpt->crossat = apt->getElevation();
pushBackWaypoint(wpt);
*/
return true;
}

13
src/Airports/groundnetwork.cxx
View file

@ -43,6 +43,7 @@
#include <Airports/simple.hxx>
#include <Airports/dynamics.hxx>
#include <Airports/runways.hxx>
#include <AIModel/AIAircraft.hxx>
#include <AIModel/performancedata.hxx>
@ -455,7 +456,7 @@ int FGGroundNetwork::findNearestNode(const SGGeod & aGeod)
return index;
}
int FGGroundNetwork::findNearestNodeOnRunway(const SGGeod & aGeod)
int FGGroundNetwork::findNearestNodeOnRunway(const SGGeod & aGeod, FGRunway* aRunway)
{
double minDist = HUGE_VAL;
int index = -1;
@ -465,6 +466,16 @@ int FGGroundNetwork::findNearestNodeOnRunway(const SGGeod & aGeod)
if (!i->second->getIsOnRunway()) {
continue;
}
// check point lies on the runway - i.e that course from aGeod to the
// runway end, matches the runway heading
if (aRunway) {
double course = SGGeodesy::courseDeg(i->second->geod(), aRunway->end());
double headingDiff = course - aRunway->headingDeg();
SG_NORMALIZE_RANGE(headingDiff, -180.0, 180.0);
if (fabs(headingDiff) > 3.0) { // 3 degrees tolerance
continue;
}
}
double d = SGGeodesy::distanceM(aGeod, i->second->geod());
if (d < minDist) {

6
src/Airports/groundnetwork.hxx
View file

@ -31,13 +31,13 @@
#include <list>
#include <map>
class Block;
#include "gnnode.hxx"
#include "parking.hxx"
#include <ATC/trafficcontrol.hxx>
class Block;
class FGRunway;
class FGTaxiSegment; // forward reference
class FGAIFlightPlan; // forward reference
class FGAirport; // forward reference
@ -275,7 +275,7 @@ public:
};
int findNearestNode(const SGGeod& aGeod);
int findNearestNodeOnRunway(const SGGeod& aGeod);
int findNearestNodeOnRunway(const SGGeod& aGeod, FGRunway* aRunway = NULL);
FGTaxiNode *findNode(unsigned idx);
FGTaxiSegment *findSegment(unsigned idx);

11
src/Airports/runways.cxx
View file

@ -149,6 +149,17 @@ FGNavRecord* FGRunway::ILS() const
return (FGNavRecord*) flightgear::NavDataCache::instance()->loadById(_ils);
}
FGNavRecord* FGRunway::glideslope() const
{
flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
PositionedID gsId = cache->findNavaidForRunway(guid(), FGPositioned::GS);
if (gsId == 0) {
return NULL;
}
return (FGNavRecord*) cache->loadById(gsId);
}
std::vector<flightgear::SID*> FGRunway::getSIDs() const
{
FGAirport* apt = airport();

5
src/Airports/runways.hxx
View file

@ -108,6 +108,11 @@ public:
FGNavRecord* ILS() const;
/**
* retrieve the associated glideslope transmitter, if one is defined.
*/
FGNavRecord* glideslope() const;
void setILS(PositionedID nav) { _ils = nav; }
FGRunway* reciprocalRunway() const;

17
src/Navaids/NavDataCache.cxx
View file

@ -528,6 +528,9 @@ public:
findNavsByFreqNoPos = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
"positioned.rowid=navaid.rowid AND freq=?1 " AND_TYPED);
findNavaidForRunway = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
"positioned.rowid=navaid.rowid AND runway=?1 AND type=?2");
// for an octree branch, return the child octree nodes which exist,
// described as a bit-mask
getOctreeChildren = prepare("SELECT children FROM octree WHERE rowid=?1");
@ -808,7 +811,7 @@ public:
sqlite3_stmt_ptr searchAirports;
sqlite3_stmt_ptr findCommByFreq, findNavsByFreq,
findNavsByFreqNoPos;
findNavsByFreqNoPos, findNavaidForRunway;
sqlite3_stmt_ptr getAirportItems, getAirportItemByIdent;
sqlite3_stmt_ptr findAirportRunway,
findILS;
@ -1707,6 +1710,18 @@ AirwayEdgeVec NavDataCache::airwayEdgesFrom(int network, PositionedID pos)
}
return result;
}
PositionedID NavDataCache::findNavaidForRunway(PositionedID runway, FGPositioned::Type ty)
{
d->reset(d->findNavaidForRunway);
sqlite3_bind_int64(d->findNavaidForRunway, 1, runway);
sqlite3_bind_int(d->findNavaidForRunway, 2, ty);
if (!d->execSelect(d->findNavaidForRunway)) {
return 0;
}
return sqlite3_column_int64(d->findNavaidForRunway, 0);
}
} // of namespace flightgear

5
src/Navaids/NavDataCache.hxx
View file

@ -140,6 +140,11 @@ public:
/// returning results. Only used by TACAN carrier search
PositionedIDVec findNavaidsByFreq(int freqKhz, FGPositioned::Filter* filt);
/**
* Given a runway and type, find the corresponding navaid (ILS / GS / OM)
*/
PositionedID findNavaidForRunway(PositionedID runway, FGPositioned::Type ty);
/**
* given a navaid name (or similar) from apt.dat / nav.dat, find the
* corresponding airport and runway IDs.

23
src/Traffic/TrafficMgr.cxx
View file

@ -200,15 +200,15 @@ void FGTrafficManager::shutdown()
cachefile << "[TrafficManagerCachedata:ref:2011:09:04]" << endl;
}
}
for (ScheduleVectorIterator sched = scheduledAircraft.begin();
sched != scheduledAircraft.end(); sched++) {
BOOST_FOREACH(FGAISchedule* acft, scheduledAircraft) {
if (saveData) {
cachefile << (*sched)->getRegistration() << " "
<< (*sched)->getRunCount() << " "
<< (*sched)->getHits() << " "
<< (*sched)->getLastUsed() << endl;
cachefile << acft->getRegistration() << " "
<< acft->getRunCount() << " "
<< acft->getHits() << " "
<< acft->getLastUsed() << endl;
}
delete(*sched);
delete acft;
}
if (saveData) {
cachefile.close();
@ -271,10 +271,9 @@ void FGTrafficManager::finishInit()
SG_LOG(SG_AI, SG_INFO, "finishing AI-Traffic init");
loadHeuristics();
// Do sorting and scoring separately, to take advantage of the "homeport| variable
for (currAircraft = scheduledAircraft.begin();
currAircraft != scheduledAircraft.end(); currAircraft++) {
(*currAircraft)->setScore();
// Do sorting and scoring separately, to take advantage of the "homeport" variable
BOOST_FOREACH(FGAISchedule* schedule, scheduledAircraft) {
schedule->setScore();
}
sort(scheduledAircraft.begin(), scheduledAircraft.end(),
@ -372,7 +371,7 @@ void FGTrafficManager::update(double /*dt */ )
}
time_t now = time(NULL) + fgGetLong("/sim/time/warp");
if (scheduledAircraft.size() == 0) {
if (scheduledAircraft.empty()) {
return;
}