1 // FGAIPlane - abstract base class for an AI plane
3 // Written by David Luff, started 2002.
5 // Copyright (C) 2002 David C. Luff - david.luff@nottingham.ac.uk
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 #include <Main/globals.hxx>
22 #include <Main/fg_props.hxx>
23 #include <simgear/math/point3d.hxx>
24 #include <simgear/debug/logstream.hxx>
25 #include <simgear/sound/soundmgr_openal.hxx>
31 #include "AIPlane.hxx"
33 FGAIPlane::FGAIPlane() {
36 pending_transmission = "";
41 _transmitting = false;
50 _rollSuspended = false;
53 FGAIPlane::~FGAIPlane() {
56 void FGAIPlane::Update(double dt) {
59 if(tuned_station->GetFreqClear()) {
60 //cout << "TUNED STATION FREQ CLEAR\n";
61 tuned_station->SetFreqInUse();
64 _transmitting = false;
66 if(_timeout > 0.0) { // allows count down to be avoided by initially setting it to zero
71 // timed out - don't render.
72 if(_callback_code == 99) {
73 // MEGA-HACK - 99 is the remove self callback - currently this *does* need to be run even if the transmission isn't made.
74 ProcessCallback(_callback_code);
80 // Not tuned to ATC - Just go ahead and transmit
81 //cout << "NOT TUNED TO ATC\n";
84 _transmitting = false;
88 // This turns on rendering if on the same freq as the user
89 // TODO - turn it off if user switches to another freq - keep track of where in message we are etc.
91 //cout << "transmit\n";
92 double user_freq0 = fgGetDouble("/instrumentation/comm[0]/frequencies/selected-mhz");
93 double user_freq1 = fgGetDouble("/instrumentation/comm[1]/frequencies/selected-mhz");
95 _max_count = 5.0; // FIXME - hardwired length of message - need to calculate it!
97 //cout << "Transmission = " << pending_transmission << '\n';
99 // The radios dialog seems to set slightly imprecise freqs, eg 118.099998
100 // The eplison stuff below is a work-around
101 double eps0 = fabs(freq - user_freq0);
102 double eps1 = fabs(freq - user_freq1);
103 if(eps0 < 0.002 || eps1 < 0.002) {
104 //cout << "Transmitting..." << endl;
105 // we are on the same frequency, so check distance to the user plane
107 // For now assume in range !!!
108 // TODO - implement range checking
109 Render(plane.callsign, false);
112 // Run the callback regardless of whether on same freq as user or not.
114 ProcessCallback(_callback_code);
117 _transmitting = true;
118 } else if(_transmitting) {
119 if(_counter >= _max_count) {
120 NoRender(plane.callsign);
121 _transmitting = false;
122 // For now we'll let ATC decide whether to respond
123 //if(tuned_station) tuned_station->SetResponseReqd(plane.callsign);
124 //if(tuned_station->get_ident() == "KRHV") cout << "Notifying transmission finished" << endl;
125 if(tuned_station) tuned_station->NotifyTransmissionFinished(plane.callsign);
130 // Fly the plane if necessary
132 while((_tgtTrack - track) > 180.0) track += 360.0;
133 while((track - _tgtTrack) > 180.0) track -= 360.0;
134 double turn_time = 60.0;
135 track += (360.0 / turn_time) * dt * (_tgtTrack > track ? 1.0 : -1.0);
136 // TODO - bank a bit less for small turns.
137 Bank(25.0 * (_tgtTrack > track ? 1.0 : -1.0));
138 if(fabs(track - _tgtTrack) < 2.0) { // TODO - might need to optimise the delta there - it's on the large (safe) side atm.
144 if(!_rollSuspended) {
145 if(fabs(_roll - _tgtRoll) > 0.6) {
146 // This *should* bank us smoothly to any angle
147 _roll -= ((_roll - _tgtRoll)/fabs(_roll - _tgtRoll));
154 void FGAIPlane::Transmit(int callback_code) {
155 SG_LOG(SG_ATC, SG_INFO, "Transmit called for plane " << plane.callsign << ", msg = " << pending_transmission);
157 _callback_code = callback_code;
161 void FGAIPlane::ConditionalTransmit(double timeout, int callback_code) {
162 SG_LOG(SG_ATC, SG_INFO, "Timed transmit called for plane " << plane.callsign << ", msg = " << pending_transmission);
164 _callback_code = callback_code;
168 void FGAIPlane::ImmediateTransmit(int callback_code) {
169 Render(plane.callsign, false);
171 ProcessCallback(callback_code);
175 // Derived classes should override this.
176 void FGAIPlane::ProcessCallback(int code) {
179 // Render a transmission
180 // Outputs the transmission either on screen or as audio depending on user preference
181 // The refname is a string to identify this sample to the sound manager
182 // The repeating flag indicates whether the message should be repeated continuously or played once.
183 void FGAIPlane::Render(const string& refname, bool repeating) {
184 fgSetString("/sim/messages/ai-plane", pending_transmission.c_str());
185 #ifdef ENABLE_AUDIO_SUPPORT
186 voice = (voiceOK && fgGetBool("/sim/sound/voice"));
189 unsigned char* buf = vPtr->WriteMessage((char*)pending_transmission.c_str(), len, voice);
191 SGSoundSample* simple = new SGSoundSample(buf, len, 8000);
192 // TODO - at the moment the volume is always set off comm1
193 // and can't be changed after the transmission has started.
194 simple->set_volume(5.0 * fgGetDouble("/instrumentation/comm[0]/volume"));
195 globals->get_soundmgr()->add(simple, refname);
197 globals->get_soundmgr()->play_looped(refname);
199 globals->get_soundmgr()->play_once(refname);
204 #endif // ENABLE_AUDIO_SUPPORT
206 // first rip the underscores and the pause hints out of the string - these are for the convienience of the voice parser
207 for(unsigned int i = 0; i < pending_transmission.length(); ++i) {
208 if((pending_transmission.substr(i,1) == "_") || (pending_transmission.substr(i,1) == "/")) {
209 pending_transmission[i] = ' ';
217 // Cease rendering a transmission.
218 void FGAIPlane::NoRender(const string& refname) {
221 #ifdef ENABLE_AUDIO_SUPPORT
222 globals->get_soundmgr()->stop(refname);
223 globals->get_soundmgr()->remove(refname);
234 void FGAIPlane::RegisterTransmission(int code) {
238 // Return what type of landing we're doing on this circuit
239 LandingType FGAIPlane::GetLandingOption() {
244 ostream& operator << (ostream& os, PatternLeg pl) {
246 case(TAKEOFF_ROLL): return(os << "TAKEOFF ROLL");
247 case(CLIMBOUT): return(os << "CLIMBOUT");
248 case(TURN1): return(os << "TURN1");
249 case(CROSSWIND): return(os << "CROSSWIND");
250 case(TURN2): return(os << "TURN2");
251 case(DOWNWIND): return(os << "DOWNWIND");
252 case(TURN3): return(os << "TURN3");
253 case(BASE): return(os << "BASE");
254 case(TURN4): return(os << "TURN4");
255 case(FINAL): return(os << "FINAL");
256 case(LANDING_ROLL): return(os << "LANDING ROLL");
257 case(LEG_UNKNOWN): return(os << "UNKNOWN");
259 return(os << "ERROR - Unknown switch in PatternLeg operator << ");
263 ostream& operator << (ostream& os, LandingType lt) {
265 case(FULL_STOP): return(os << "FULL STOP");
266 case(STOP_AND_GO): return(os << "STOP AND GO");
267 case(TOUCH_AND_GO): return(os << "TOUCH AND GO");
268 case(AIP_LT_UNKNOWN): return(os << "UNKNOWN");
270 return(os << "ERROR - Unknown switch in LandingType operator << ");