237 lines
6.9 KiB
C++
237 lines
6.9 KiB
C++
// FGAIPlane - abstract base class for an AI plane
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//
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// Written by David Luff, started 2002.
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//
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// Copyright (C) 2002 David C. Luff - david.luff@nottingham.ac.uk
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <Main/globals.hxx>
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#include <Main/fg_props.hxx>
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#include <simgear/math/point3d.hxx>
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#include <simgear/debug/logstream.hxx>
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#include <simgear/sound/soundmgr.hxx>
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#include <math.h>
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#include <string>
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SG_USING_STD(string);
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#include "AIPlane.hxx"
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#include "ATCdisplay.hxx"
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FGAIPlane::FGAIPlane() {
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leg = LEG_UNKNOWN;
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tuned_station = NULL;
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pending_transmission = "";
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_timeout = 0;
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_pending = false;
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_callback = NULL;
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_transmit = false;
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_transmitting = false;
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voice = false;
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playing = false;
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voiceOK = false;
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vPtr = NULL;
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}
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FGAIPlane::~FGAIPlane() {
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}
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void FGAIPlane::Update(double dt) {
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if(_pending) {
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if(tuned_station) {
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if(tuned_station->GetFreqClear()) {
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_pending = false;
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_transmit = true;
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_transmitting = false;
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} else {
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if(_timeout > 0.0) { // allows count down to be avoided by initially setting it to zero
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_timeout -= dt;
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if(_timeout <= 0.0) {
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_timeout = 0.0;
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_pending = false;
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// timed out - don't render.
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}
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}
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}
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} else {
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// Not tuned to ATC - Just go ahead and transmit
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_pending = false;
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_transmit = true;
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_transmitting = false;
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}
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}
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// This turns on rendering if on the same freq as the user
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// TODO - turn it off if user switches to another freq - keep track of where in message we are etc.
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if(_transmit) {
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double user_freq0 = fgGetDouble("/radios/comm[0]/frequencies/selected-mhz");
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//comm1 is not used yet.
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_counter = 0.0;
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_max_count = 5.0; // FIXME - hardwired length of message - need to calculate it!
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if(freq == user_freq0) {
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//cout << "Transmitting..." << endl;
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// we are on the same frequency, so check distance to the user plane
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if(1) {
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// For now assume in range !!!
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// TODO - implement range checking
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Render(plane.callsign, false);
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_transmit = false;
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_transmitting = true;
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}
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}
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} else if(_transmitting) {
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if(_counter >= _max_count) {
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NoRender(plane.callsign);
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_transmitting = false;
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}
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_counter += dt;
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}
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}
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void FGAIPlane::Bank(double angle) {
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// This *should* bank us smoothly to any angle
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if(fabs(roll - angle) > 0.6) {
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roll -= ((roll - angle)/fabs(roll - angle));
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}
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}
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// Duplication of Bank(0.0) really - should I cut this?
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void FGAIPlane::LevelWings(void) {
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// bring the plane back to level smoothly (this should work to come out of either bank)
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if(fabs(roll) > 0.6) {
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roll -= (roll/fabs(roll));
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}
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}
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void FGAIPlane::Transmit(ai_plane_callback_t callback) {
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SG_LOG(SG_ATC, SG_INFO, "Transmit called for plane " << plane.callsign << ", msg = " << pending_transmission);
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_pending = true;
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_callback = callback;
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_timeout = 0.0;
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}
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void FGAIPlane::Transmit(double timeout, ai_plane_callback_t callback) {
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SG_LOG(SG_ATC, SG_INFO, "Timed transmit called for plane " << plane.callsign << ", msg = " << pending_transmission);
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_pending = true;
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_callback = callback;
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_timeout = timeout;
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}
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void FGAIPlane::ImmediateTransmit(ai_plane_callback_t callback) {
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Render(plane.callsign, false);
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if(_callback) {
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(*_callback)();
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}
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}
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// Render a transmission
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// Outputs the transmission either on screen or as audio depending on user preference
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// The refname is a string to identify this sample to the sound manager
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// The repeating flag indicates whether the message should be repeated continuously or played once.
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void FGAIPlane::Render(string refname, bool repeating) {
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#ifdef ENABLE_AUDIO_SUPPORT
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voice = (voiceOK && fgGetBool("/sim/sound/audible")
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&& fgGetBool("/sim/sound/voice"));
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if(voice) {
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int len;
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unsigned char* buf = vPtr->WriteMessage((char*)pending_transmission.c_str(), len, voice);
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if(voice) {
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SGSimpleSound* simple = new SGSimpleSound(buf, len);
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// TODO - at the moment the volume is always set off comm1
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// and can't be changed after the transmission has started.
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simple->set_volume(5.0 * fgGetDouble("/radios/comm[0]/volume"));
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globals->get_soundmgr()->add(simple, refname);
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if(repeating) {
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globals->get_soundmgr()->play_looped(refname);
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} else {
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globals->get_soundmgr()->play_once(refname);
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}
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}
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delete[] buf;
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}
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#endif // ENABLE_AUDIO_SUPPORT
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if(!voice) {
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// first rip the underscores and the pause hints out of the string - these are for the convienience of the voice parser
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for(unsigned int i = 0; i < pending_transmission.length(); ++i) {
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if((pending_transmission.substr(i,1) == "_") || (pending_transmission.substr(i,1) == "/")) {
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pending_transmission[i] = ' ';
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}
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}
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globals->get_ATC_display()->RegisterSingleMessage(pending_transmission, 0.0);
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}
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playing = true;
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}
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// Cease rendering a transmission.
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void FGAIPlane::NoRender(string refname) {
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if(playing) {
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if(voice) {
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#ifdef ENABLE_AUDIO_SUPPORT
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globals->get_soundmgr()->stop(refname);
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globals->get_soundmgr()->remove(refname);
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#endif
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} else {
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globals->get_ATC_display()->CancelRepeatingMessage();
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}
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playing = false;
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}
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}
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/*
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*/
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void FGAIPlane::RegisterTransmission(int code) {
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}
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// Return what type of landing we're doing on this circuit
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LandingType FGAIPlane::GetLandingOption() {
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return(FULL_STOP);
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}
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ostream& operator << (ostream& os, PatternLeg pl) {
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switch(pl) {
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case(TAKEOFF_ROLL): return(os << "TAKEOFF ROLL");
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case(CLIMBOUT): return(os << "CLIMBOUT");
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case(TURN1): return(os << "TURN1");
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case(CROSSWIND): return(os << "CROSSWIND");
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case(TURN2): return(os << "TURN2");
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case(DOWNWIND): return(os << "DOWNWIND");
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case(TURN3): return(os << "TURN3");
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case(BASE): return(os << "BASE");
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case(TURN4): return(os << "TURN4");
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case(FINAL): return(os << "FINAL");
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case(LANDING_ROLL): return(os << "LANDING ROLL");
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case(LEG_UNKNOWN): return(os << "UNKNOWN");
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}
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return(os << "ERROR - Unknown switch in PatternLeg operator << ");
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}
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ostream& operator << (ostream& os, LandingType lt) {
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switch(lt) {
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case(FULL_STOP): return(os << "FULL STOP");
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case(STOP_AND_GO): return(os << "STOP AND GO");
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case(TOUCH_AND_GO): return(os << "TOUCH AND GO");
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case(AIP_LT_UNKNOWN): return(os << "UNKNOWN");
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}
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return(os << "ERROR - Unknown switch in LandingType operator << ");
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}
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