1 //////////////////////////////////////////////////////////////////////
5 // Written by Duncan McCreanor, started February 2003.
6 // duncan.mccreanor@airservicesaustralia.com
8 // Copyright (C) 2003 Airservices Australia
9 // Copyright (C) 2005 Oliver Schroeder
10 // Copyright (C) 2006 Mathias Froehlich
12 // This program is free software; you can redistribute it and/or
13 // modify it under the terms of the GNU General Public License as
14 // published by the Free Software Foundation; either version 2 of the
15 // License, or (at your option) any later version.
17 // This program is distributed in the hope that it will be useful, but
18 // WITHOUT ANY WARRANTY; without even the implied warranty of
19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 // General Public License for more details.
22 // You should have received a copy of the GNU General Public License
23 // along with this program; if not, write to the Free Software
24 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 //////////////////////////////////////////////////////////////////////
38 #include <osg/Math> // isNaN
40 #include <simgear/misc/stdint.hxx>
41 #include <simgear/timing/timestamp.hxx>
42 #include <simgear/debug/logstream.hxx>
43 #include <simgear/props/props.hxx>
45 #include <AIModel/AIManager.hxx>
46 #include <AIModel/AIMultiplayer.hxx>
47 #include <Main/fg_props.hxx>
48 #include "multiplaymgr.hxx"
49 #include "mpmessages.hxx"
50 #include <FDM/flightProperties.hxx>
54 #define MAX_PACKET_SIZE 1200
55 #define MAX_TEXT_SIZE 128
57 // These constants are provided so that the ident
58 // command can list file versions
59 const char sMULTIPLAYMGR_BID[] = "$Id$";
60 const char sMULTIPLAYMGR_HID[] = MULTIPLAYTXMGR_HID;
62 struct IdPropertyList {
65 simgear::props::Type type;
68 static const IdPropertyList* findProperty(unsigned id);
70 // A static map of protocol property id values to property paths,
71 // This should be extendable dynamically for every specific aircraft ...
72 // For now only that static list
73 static const IdPropertyList sIdPropertyList[] = {
74 {100, "surface-positions/left-aileron-pos-norm", simgear::props::FLOAT},
75 {101, "surface-positions/right-aileron-pos-norm", simgear::props::FLOAT},
76 {102, "surface-positions/elevator-pos-norm", simgear::props::FLOAT},
77 {103, "surface-positions/rudder-pos-norm", simgear::props::FLOAT},
78 {104, "surface-positions/flap-pos-norm", simgear::props::FLOAT},
79 {105, "surface-positions/speedbrake-pos-norm", simgear::props::FLOAT},
80 {106, "gear/tailhook/position-norm", simgear::props::FLOAT},
81 {107, "gear/launchbar/position-norm", simgear::props::FLOAT},
82 {108, "gear/launchbar/state", simgear::props::STRING},
83 {109, "gear/launchbar/holdback-position-norm", simgear::props::FLOAT},
84 {110, "canopy/position-norm", simgear::props::FLOAT},
85 {111, "surface-positions/wing-pos-norm", simgear::props::FLOAT},
86 {112, "surface-positions/wing-fold-pos-norm", simgear::props::FLOAT},
88 {200, "gear/gear[0]/compression-norm", simgear::props::FLOAT},
89 {201, "gear/gear[0]/position-norm", simgear::props::FLOAT},
90 {210, "gear/gear[1]/compression-norm", simgear::props::FLOAT},
91 {211, "gear/gear[1]/position-norm", simgear::props::FLOAT},
92 {220, "gear/gear[2]/compression-norm", simgear::props::FLOAT},
93 {221, "gear/gear[2]/position-norm", simgear::props::FLOAT},
94 {230, "gear/gear[3]/compression-norm", simgear::props::FLOAT},
95 {231, "gear/gear[3]/position-norm", simgear::props::FLOAT},
96 {240, "gear/gear[4]/compression-norm", simgear::props::FLOAT},
97 {241, "gear/gear[4]/position-norm", simgear::props::FLOAT},
99 {300, "engines/engine[0]/n1", simgear::props::FLOAT},
100 {301, "engines/engine[0]/n2", simgear::props::FLOAT},
101 {302, "engines/engine[0]/rpm", simgear::props::FLOAT},
102 {310, "engines/engine[1]/n1", simgear::props::FLOAT},
103 {311, "engines/engine[1]/n2", simgear::props::FLOAT},
104 {312, "engines/engine[1]/rpm", simgear::props::FLOAT},
105 {320, "engines/engine[2]/n1", simgear::props::FLOAT},
106 {321, "engines/engine[2]/n2", simgear::props::FLOAT},
107 {322, "engines/engine[2]/rpm", simgear::props::FLOAT},
108 {330, "engines/engine[3]/n1", simgear::props::FLOAT},
109 {331, "engines/engine[3]/n2", simgear::props::FLOAT},
110 {332, "engines/engine[3]/rpm", simgear::props::FLOAT},
111 {340, "engines/engine[4]/n1", simgear::props::FLOAT},
112 {341, "engines/engine[4]/n2", simgear::props::FLOAT},
113 {342, "engines/engine[4]/rpm", simgear::props::FLOAT},
114 {350, "engines/engine[5]/n1", simgear::props::FLOAT},
115 {351, "engines/engine[5]/n2", simgear::props::FLOAT},
116 {352, "engines/engine[5]/rpm", simgear::props::FLOAT},
117 {360, "engines/engine[6]/n1", simgear::props::FLOAT},
118 {361, "engines/engine[6]/n2", simgear::props::FLOAT},
119 {362, "engines/engine[6]/rpm", simgear::props::FLOAT},
120 {370, "engines/engine[7]/n1", simgear::props::FLOAT},
121 {371, "engines/engine[7]/n2", simgear::props::FLOAT},
122 {372, "engines/engine[7]/rpm", simgear::props::FLOAT},
123 {380, "engines/engine[8]/n1", simgear::props::FLOAT},
124 {381, "engines/engine[8]/n2", simgear::props::FLOAT},
125 {382, "engines/engine[8]/rpm", simgear::props::FLOAT},
126 {390, "engines/engine[9]/n1", simgear::props::FLOAT},
127 {391, "engines/engine[9]/n2", simgear::props::FLOAT},
128 {392, "engines/engine[9]/rpm", simgear::props::FLOAT},
130 {800, "rotors/main/rpm", simgear::props::FLOAT},
131 {801, "rotors/tail/rpm", simgear::props::FLOAT},
132 {810, "rotors/main/blade[0]/position-deg", simgear::props::FLOAT},
133 {811, "rotors/main/blade[1]/position-deg", simgear::props::FLOAT},
134 {812, "rotors/main/blade[2]/position-deg", simgear::props::FLOAT},
135 {813, "rotors/main/blade[3]/position-deg", simgear::props::FLOAT},
136 {820, "rotors/main/blade[0]/flap-deg", simgear::props::FLOAT},
137 {821, "rotors/main/blade[1]/flap-deg", simgear::props::FLOAT},
138 {822, "rotors/main/blade[2]/flap-deg", simgear::props::FLOAT},
139 {823, "rotors/main/blade[3]/flap-deg", simgear::props::FLOAT},
140 {830, "rotors/tail/blade[0]/position-deg", simgear::props::FLOAT},
141 {831, "rotors/tail/blade[1]/position-deg", simgear::props::FLOAT},
143 {900, "sim/hitches/aerotow/tow/length", simgear::props::FLOAT},
144 {901, "sim/hitches/aerotow/tow/elastic-constant", simgear::props::FLOAT},
145 {902, "sim/hitches/aerotow/tow/weight-per-m-kg-m", simgear::props::FLOAT},
146 {903, "sim/hitches/aerotow/tow/dist", simgear::props::FLOAT},
147 {904, "sim/hitches/aerotow/tow/connected-to-property-node", simgear::props::BOOL},
148 {905, "sim/hitches/aerotow/tow/connected-to-ai-or-mp-callsign", simgear::props::STRING},
149 {906, "sim/hitches/aerotow/tow/brake-force", simgear::props::FLOAT},
150 {907, "sim/hitches/aerotow/tow/end-force-x", simgear::props::FLOAT},
151 {908, "sim/hitches/aerotow/tow/end-force-y", simgear::props::FLOAT},
152 {909, "sim/hitches/aerotow/tow/end-force-z", simgear::props::FLOAT},
153 {930, "sim/hitches/aerotow/is-slave", simgear::props::BOOL},
154 {931, "sim/hitches/aerotow/speed-in-tow-direction", simgear::props::FLOAT},
155 {932, "sim/hitches/aerotow/open", simgear::props::BOOL},
156 {933, "sim/hitches/aerotow/local-pos-x", simgear::props::FLOAT},
157 {934, "sim/hitches/aerotow/local-pos-y", simgear::props::FLOAT},
158 {935, "sim/hitches/aerotow/local-pos-z", simgear::props::FLOAT},
160 {1001, "controls/flight/slats", simgear::props::FLOAT},
161 {1002, "controls/flight/speedbrake", simgear::props::FLOAT},
162 {1003, "controls/flight/spoilers", simgear::props::FLOAT},
163 {1004, "controls/gear/gear-down", simgear::props::FLOAT},
164 {1005, "controls/lighting/nav-lights", simgear::props::FLOAT},
165 {1006, "controls/armament/station[0]/jettison-all", simgear::props::BOOL},
167 {1100, "sim/model/variant", simgear::props::INT},
168 {1101, "sim/model/livery/file", simgear::props::STRING},
170 {1200, "environment/wildfire/data", simgear::props::STRING},
171 {1201, "environment/contrail", simgear::props::INT},
173 {1300, "tanker", simgear::props::INT},
175 {1400, "scenery/events", simgear::props::STRING},
177 {10001, "sim/multiplay/transmission-freq-hz", simgear::props::STRING},
178 {10002, "sim/multiplay/chat", simgear::props::STRING},
180 {10100, "sim/multiplay/generic/string[0]", simgear::props::STRING},
181 {10101, "sim/multiplay/generic/string[1]", simgear::props::STRING},
182 {10102, "sim/multiplay/generic/string[2]", simgear::props::STRING},
183 {10103, "sim/multiplay/generic/string[3]", simgear::props::STRING},
184 {10104, "sim/multiplay/generic/string[4]", simgear::props::STRING},
185 {10105, "sim/multiplay/generic/string[5]", simgear::props::STRING},
186 {10106, "sim/multiplay/generic/string[6]", simgear::props::STRING},
187 {10107, "sim/multiplay/generic/string[7]", simgear::props::STRING},
188 {10108, "sim/multiplay/generic/string[8]", simgear::props::STRING},
189 {10109, "sim/multiplay/generic/string[9]", simgear::props::STRING},
190 {10110, "sim/multiplay/generic/string[10]", simgear::props::STRING},
191 {10111, "sim/multiplay/generic/string[11]", simgear::props::STRING},
192 {10112, "sim/multiplay/generic/string[12]", simgear::props::STRING},
193 {10113, "sim/multiplay/generic/string[13]", simgear::props::STRING},
194 {10114, "sim/multiplay/generic/string[14]", simgear::props::STRING},
195 {10115, "sim/multiplay/generic/string[15]", simgear::props::STRING},
196 {10116, "sim/multiplay/generic/string[16]", simgear::props::STRING},
197 {10117, "sim/multiplay/generic/string[17]", simgear::props::STRING},
198 {10118, "sim/multiplay/generic/string[18]", simgear::props::STRING},
199 {10119, "sim/multiplay/generic/string[19]", simgear::props::STRING},
201 {10200, "sim/multiplay/generic/float[0]", simgear::props::FLOAT},
202 {10201, "sim/multiplay/generic/float[1]", simgear::props::FLOAT},
203 {10202, "sim/multiplay/generic/float[2]", simgear::props::FLOAT},
204 {10203, "sim/multiplay/generic/float[3]", simgear::props::FLOAT},
205 {10204, "sim/multiplay/generic/float[4]", simgear::props::FLOAT},
206 {10205, "sim/multiplay/generic/float[5]", simgear::props::FLOAT},
207 {10206, "sim/multiplay/generic/float[6]", simgear::props::FLOAT},
208 {10207, "sim/multiplay/generic/float[7]", simgear::props::FLOAT},
209 {10208, "sim/multiplay/generic/float[8]", simgear::props::FLOAT},
210 {10209, "sim/multiplay/generic/float[9]", simgear::props::FLOAT},
211 {10210, "sim/multiplay/generic/float[10]", simgear::props::FLOAT},
212 {10211, "sim/multiplay/generic/float[11]", simgear::props::FLOAT},
213 {10212, "sim/multiplay/generic/float[12]", simgear::props::FLOAT},
214 {10213, "sim/multiplay/generic/float[13]", simgear::props::FLOAT},
215 {10214, "sim/multiplay/generic/float[14]", simgear::props::FLOAT},
216 {10215, "sim/multiplay/generic/float[15]", simgear::props::FLOAT},
217 {10216, "sim/multiplay/generic/float[16]", simgear::props::FLOAT},
218 {10217, "sim/multiplay/generic/float[17]", simgear::props::FLOAT},
219 {10218, "sim/multiplay/generic/float[18]", simgear::props::FLOAT},
220 {10219, "sim/multiplay/generic/float[19]", simgear::props::FLOAT},
222 {10300, "sim/multiplay/generic/int[0]", simgear::props::INT},
223 {10301, "sim/multiplay/generic/int[1]", simgear::props::INT},
224 {10302, "sim/multiplay/generic/int[2]", simgear::props::INT},
225 {10303, "sim/multiplay/generic/int[3]", simgear::props::INT},
226 {10304, "sim/multiplay/generic/int[4]", simgear::props::INT},
227 {10305, "sim/multiplay/generic/int[5]", simgear::props::INT},
228 {10306, "sim/multiplay/generic/int[6]", simgear::props::INT},
229 {10307, "sim/multiplay/generic/int[7]", simgear::props::INT},
230 {10308, "sim/multiplay/generic/int[8]", simgear::props::INT},
231 {10309, "sim/multiplay/generic/int[9]", simgear::props::INT},
232 {10310, "sim/multiplay/generic/int[10]", simgear::props::INT},
233 {10311, "sim/multiplay/generic/int[11]", simgear::props::INT},
234 {10312, "sim/multiplay/generic/int[12]", simgear::props::INT},
235 {10313, "sim/multiplay/generic/int[13]", simgear::props::INT},
236 {10314, "sim/multiplay/generic/int[14]", simgear::props::INT},
237 {10315, "sim/multiplay/generic/int[15]", simgear::props::INT},
238 {10316, "sim/multiplay/generic/int[16]", simgear::props::INT},
239 {10317, "sim/multiplay/generic/int[17]", simgear::props::INT},
240 {10318, "sim/multiplay/generic/int[18]", simgear::props::INT},
241 {10319, "sim/multiplay/generic/int[19]", simgear::props::INT}
244 const unsigned int numProperties = (sizeof(sIdPropertyList)
245 / sizeof(sIdPropertyList[0]));
247 // Look up a property ID using binary search.
250 struct ComparePropertyId
252 bool operator()(const IdPropertyList& lhs,
253 const IdPropertyList& rhs)
255 return lhs.id < rhs.id;
257 bool operator()(const IdPropertyList& lhs,
262 bool operator()(unsigned id,
263 const IdPropertyList& rhs)
270 const IdPropertyList* findProperty(unsigned id)
272 std::pair<const IdPropertyList*, const IdPropertyList*> result
273 = std::equal_range(sIdPropertyList, sIdPropertyList + numProperties, id,
274 ComparePropertyId());
275 if (result.first == result.second) {
284 bool verifyProperties(const xdr_data_t* data, const xdr_data_t* end)
286 using namespace simgear;
287 const xdr_data_t* xdr = data;
289 unsigned id = XDR_decode_uint32(*xdr);
290 const IdPropertyList* plist = findProperty(id);
294 // How we decode the remainder of the property depends on the type
295 switch (plist->type) {
304 float val = XDR_decode_float(*xdr);
311 case props::UNSPECIFIED:
313 // String is complicated. It consists of
314 // The length of the string
316 // Padding to the nearest 4-bytes.
317 // XXX Yes, each byte is padded out to a word! Too late
319 uint32_t length = XDR_decode_uint32(*xdr);
321 // Old versions truncated the string but left the length
323 if (length > MAX_TEXT_SIZE)
324 length = MAX_TEXT_SIZE;
326 // Now handle the padding
327 while ((length % 4) != 0)
336 // cerr << "Unknown Prop type " << id << " " << type << "\n";
342 // give up; this is a malformed property list.
350 class MPPropertyListener : public SGPropertyChangeListener
353 MPPropertyListener(FGMultiplayMgr* mp) :
358 virtual void childAdded(SGPropertyNode*, SGPropertyNode*)
360 _multiplay->setPropertiesChanged();
364 FGMultiplayMgr* _multiplay;
367 //////////////////////////////////////////////////////////////////////
369 // MultiplayMgr constructor
371 //////////////////////////////////////////////////////////////////////
372 FGMultiplayMgr::FGMultiplayMgr()
374 mInitialised = false;
377 } // FGMultiplayMgr::FGMultiplayMgr()
378 //////////////////////////////////////////////////////////////////////
380 //////////////////////////////////////////////////////////////////////
382 // MultiplayMgr destructor
384 //////////////////////////////////////////////////////////////////////
385 FGMultiplayMgr::~FGMultiplayMgr()
388 } // FGMultiplayMgr::~FGMultiplayMgr()
389 //////////////////////////////////////////////////////////////////////
391 //////////////////////////////////////////////////////////////////////
395 //////////////////////////////////////////////////////////////////////
397 FGMultiplayMgr::init (void)
399 //////////////////////////////////////////////////
400 // Initialise object if not already done
401 //////////////////////////////////////////////////
403 SG_LOG(SG_NETWORK, SG_WARN, "FGMultiplayMgr::init - already initialised");
407 fgSetBool("/sim/multiplay/online", false);
409 //////////////////////////////////////////////////
410 // Set members from property values
411 //////////////////////////////////////////////////
412 short rxPort = fgGetInt("/sim/multiplay/rxport");
413 string rxAddress = fgGetString("/sim/multiplay/rxhost");
414 short txPort = fgGetInt("/sim/multiplay/txport", 5000);
415 string txAddress = fgGetString("/sim/multiplay/txhost");
417 int hz = fgGetInt("/sim/multiplay/tx-rate-hz", 10);
423 mTimeUntilSend = 0.0;
425 mCallsign = fgGetString("/sim/multiplay/callsign");
426 if ((!txAddress.empty()) && (txAddress!="0")) {
427 mServer.set(txAddress.c_str(), txPort);
428 if (strncmp (mServer.getHost(), "0.0.0.0", 8) == 0) {
430 SG_LOG(SG_NETWORK, SG_ALERT,
431 "FGMultiplayMgr - Could not resolve '"
432 << txAddress << "'. Multiplayer mode disabled.");
435 SG_LOG(SG_NETWORK, SG_INFO, "FGMultiplayMgr - have server");
441 SG_LOG(SG_NETWORK, SG_INFO, "FGMultiplayMgr - no transmission address. Multiplayer mode disabled");
446 SG_LOG(SG_NETWORK, SG_INFO,
447 "FGMultiplayMgr - No receiver port. Multiplayer mode disabled.");
450 if (mCallsign.empty())
451 mCallsign = "JohnDoe"; // FIXME: use getpwuid
452 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-txaddress= "<<txAddress);
453 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-txport= "<<txPort );
454 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-rxaddress="<<rxAddress );
455 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-rxport= "<<rxPort);
456 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-callsign= "<<mCallsign);
458 mSocket.reset(new simgear::Socket());
459 if (!mSocket->open(false)) {
460 SG_LOG( SG_NETWORK, SG_WARN,
461 "FGMultiplayMgr - Failed to create data socket. Multiplayer mode disabled." );
464 mSocket->setBlocking(false);
465 if (mSocket->bind(rxAddress.c_str(), rxPort) != 0) {
466 SG_LOG( SG_NETWORK, SG_ALERT,
467 "FGMultiplayMgr - Failed to bind receive socket. Multiplayer mode disabled. "
468 << strerror(errno) << "(errno " << errno << ")");
472 mPropertiesChanged = true;
473 mListener = new MPPropertyListener(this);
474 globals->get_props()->addChangeListener(mListener, false);
476 fgSetBool("/sim/multiplay/online", true);
479 SG_LOG(SG_NETWORK, SG_ALERT, "Multiplayer mode active!");
480 } // FGMultiplayMgr::init()
481 //////////////////////////////////////////////////////////////////////
483 //////////////////////////////////////////////////////////////////////
485 // Closes and deletes the local player object. Closes
486 // and deletes the tx socket. Resets the object state to unitialised.
488 //////////////////////////////////////////////////////////////////////
490 FGMultiplayMgr::shutdown (void)
492 fgSetBool("/sim/multiplay/online", false);
499 MultiPlayerMap::iterator it = mMultiPlayerMap.begin(),
500 end = mMultiPlayerMap.end();
501 for (; it != end; ++it) {
502 it->second->setDie(true);
504 mMultiPlayerMap.clear();
507 globals->get_props()->removeChangeListener(mListener);
512 mInitialised = false;
513 } // FGMultiplayMgr::Close(void)
514 //////////////////////////////////////////////////////////////////////
517 FGMultiplayMgr::reinit()
523 //////////////////////////////////////////////////////////////////////
525 // Description: Sends the position data for the local position.
527 //////////////////////////////////////////////////////////////////////
530 * The buffer that holds a multi-player message, suitably aligned.
532 union FGMultiplayMgr::MsgBuf
536 memset(&Msg, 0, sizeof(Msg));
544 const T_MsgHdr* msgHdr() const
546 return reinterpret_cast<const T_MsgHdr*>(&Header);
549 T_PositionMsg* posMsg()
551 return reinterpret_cast<T_PositionMsg*>(Msg + sizeof(T_MsgHdr));
554 const T_PositionMsg* posMsg() const
556 return reinterpret_cast<const T_PositionMsg*>(Msg + sizeof(T_MsgHdr));
559 xdr_data_t* properties()
561 return reinterpret_cast<xdr_data_t*>(Msg + sizeof(T_MsgHdr)
562 + sizeof(T_PositionMsg));
565 const xdr_data_t* properties() const
567 return reinterpret_cast<const xdr_data_t*>(Msg + sizeof(T_MsgHdr)
568 + sizeof(T_PositionMsg));
571 * The end of the properties buffer.
573 xdr_data_t* propsEnd()
575 return reinterpret_cast<xdr_data_t*>(Msg + MAX_PACKET_SIZE);
578 const xdr_data_t* propsEnd() const
580 return reinterpret_cast<const xdr_data_t*>(Msg + MAX_PACKET_SIZE);
583 * The end of properties actually in the buffer. This assumes that
584 * the message header is valid.
586 xdr_data_t* propsRecvdEnd()
588 return reinterpret_cast<xdr_data_t*>(Msg + Header.MsgLen);
591 const xdr_data_t* propsRecvdEnd() const
593 return reinterpret_cast<const xdr_data_t*>(Msg + Header.MsgLen);
596 xdr_data2_t double_val;
597 char Msg[MAX_PACKET_SIZE];
602 FGMultiplayMgr::isSane(const FGExternalMotionData& motionInfo)
604 // check for corrupted data (NaNs)
605 bool isCorrupted = false;
606 isCorrupted |= ((osg::isNaN(motionInfo.time )) ||
607 (osg::isNaN(motionInfo.lag )) ||
608 (osg::isNaN(motionInfo.orientation(3) )));
609 for (unsigned i = 0; (i < 3)&&(!isCorrupted); ++i)
611 isCorrupted |= ((osg::isNaN(motionInfo.position(i) ))||
612 (osg::isNaN(motionInfo.orientation(i) ))||
613 (osg::isNaN(motionInfo.linearVel(i)) )||
614 (osg::isNaN(motionInfo.angularVel(i)) )||
615 (osg::isNaN(motionInfo.linearAccel(i)) )||
616 (osg::isNaN(motionInfo.angularAccel(i)) ));
622 FGMultiplayMgr::SendMyPosition(const FGExternalMotionData& motionInfo)
624 if ((! mInitialised) || (! mHaveServer))
628 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::SendMyPosition - no server");
632 if (!isSane(motionInfo))
634 // Current local data is invalid (NaN), so stop MP transmission.
635 // => Be nice to older FG versions (no NaN checks) and don't waste bandwidth.
636 SG_LOG(SG_NETWORK, SG_ALERT, "FGMultiplayMgr::SendMyPosition - "
637 << "Local data is invalid (NaN). Data not transmitted.");
641 static MsgBuf msgBuf;
642 static unsigned msgLen = 0;
643 T_PositionMsg* PosMsg = msgBuf.posMsg();
645 strncpy(PosMsg->Model, fgGetString("/sim/model/path"), MAX_MODEL_NAME_LEN);
646 PosMsg->Model[MAX_MODEL_NAME_LEN - 1] = '\0';
647 if (fgGetBool("/sim/freeze/replay-state", true)&&
648 fgGetBool("/sim/multiplay/freeze-on-replay",true))
650 // do not send position updates during replay
651 for (unsigned i = 0 ; i < 3; ++i)
653 // no movement during replay
654 PosMsg->linearVel[i] = XDR_encode_float (0.0);
655 PosMsg->angularVel[i] = XDR_encode_float (0.0);
656 PosMsg->linearAccel[i] = XDR_encode_float (0.0);
657 PosMsg->angularAccel[i] = XDR_encode_float (0.0);
659 // all other data remains unchanged (resend last state)
663 PosMsg->time = XDR_encode_double (motionInfo.time);
664 PosMsg->lag = XDR_encode_double (motionInfo.lag);
665 for (unsigned i = 0 ; i < 3; ++i)
666 PosMsg->position[i] = XDR_encode_double (motionInfo.position(i));
668 motionInfo.orientation.getAngleAxis(angleAxis);
669 for (unsigned i = 0 ; i < 3; ++i)
670 PosMsg->orientation[i] = XDR_encode_float (angleAxis(i));
671 for (unsigned i = 0 ; i < 3; ++i)
672 PosMsg->linearVel[i] = XDR_encode_float (motionInfo.linearVel(i));
673 for (unsigned i = 0 ; i < 3; ++i)
674 PosMsg->angularVel[i] = XDR_encode_float (motionInfo.angularVel(i));
675 for (unsigned i = 0 ; i < 3; ++i)
676 PosMsg->linearAccel[i] = XDR_encode_float (motionInfo.linearAccel(i));
677 for (unsigned i = 0 ; i < 3; ++i)
678 PosMsg->angularAccel[i] = XDR_encode_float (motionInfo.angularAccel(i));
680 xdr_data_t* ptr = msgBuf.properties();
681 std::vector<FGPropertyData*>::const_iterator it;
682 it = motionInfo.properties.begin();
683 //cout << "OUTPUT PROPERTIES\n";
684 xdr_data_t* msgEnd = msgBuf.propsEnd();
685 while (it != motionInfo.properties.end() && ptr + 2 < msgEnd) {
687 // First element is the ID. Write it out when we know we have room for
688 // the whole property.
689 xdr_data_t id = XDR_encode_uint32((*it)->id);
690 // The actual data representation depends on the type
691 switch ((*it)->type) {
692 case simgear::props::INT:
693 case simgear::props::BOOL:
694 case simgear::props::LONG:
696 *ptr++ = XDR_encode_uint32((*it)->int_value);
697 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->int_value << "\n";
699 case simgear::props::FLOAT:
700 case simgear::props::DOUBLE:
702 *ptr++ = XDR_encode_float((*it)->float_value);
703 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
705 case simgear::props::STRING:
706 case simgear::props::UNSPECIFIED:
708 // String is complicated. It consists of
709 // The length of the string
711 // Padding to the nearest 4-bytes.
712 const char* lcharptr = (*it)->string_value;
717 ////cout << "String length: " << strlen(lcharptr) << "\n";
718 uint32_t len = strlen(lcharptr);
719 if (len > MAX_TEXT_SIZE)
721 // XXX This should not be using 4 bytes per character!
722 // If there's not enough room for this property, drop it
724 if (ptr + 2 + ((len + 3) & ~3) > msgEnd)
726 //cout << "String length unint32: " << len << "\n";
728 *ptr++ = XDR_encode_uint32(len);
731 // Now the text itself
732 // XXX This should not be using 4 bytes per character!
734 while ((*lcharptr != '\0') && (lcount < MAX_TEXT_SIZE))
736 *ptr++ = XDR_encode_int8(*lcharptr);
741 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " " << len << " " << (*it)->string_value;
743 // Now pad if required
744 while ((lcount % 4) != 0)
746 *ptr++ = XDR_encode_int8(0);
758 *ptr++ = XDR_encode_uint32(0);
759 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " 0\n";
765 //cout << " Unknown Type: " << (*it)->type << "\n";
767 *ptr++ = XDR_encode_float((*it)->float_value);;
768 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
775 msgLen = reinterpret_cast<char*>(ptr) - msgBuf.Msg;
776 FillMsgHdr(msgBuf.msgHdr(), POS_DATA_ID, msgLen);
779 mSocket->sendto(msgBuf.Msg, msgLen, 0, &mServer);
780 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::SendMyPosition");
781 } // FGMultiplayMgr::SendMyPosition()
783 //////////////////////////////////////////////////////////////////////
785 //////////////////////////////////////////////////////////////////////
787 // Name: SendTextMessage
788 // Description: Sends a message to the player. The message must
789 // contain a valid and correctly filled out header and optional
792 //////////////////////////////////////////////////////////////////////
794 FGMultiplayMgr::SendTextMessage(const string &MsgText)
796 if (!mInitialised || !mHaveServer)
800 FillMsgHdr(&MsgHdr, CHAT_MSG_ID);
801 //////////////////////////////////////////////////
802 // Divide the text string into blocks that fit
803 // in the message and send the blocks.
804 //////////////////////////////////////////////////
805 unsigned iNextBlockPosition = 0;
808 char Msg[sizeof(T_MsgHdr) + sizeof(T_ChatMsg)];
809 while (iNextBlockPosition < MsgText.length()) {
810 strncpy (ChatMsg.Text,
811 MsgText.substr(iNextBlockPosition, MAX_CHAT_MSG_LEN - 1).c_str(),
813 ChatMsg.Text[MAX_CHAT_MSG_LEN - 1] = '\0';
814 memcpy (Msg, &MsgHdr, sizeof(T_MsgHdr));
815 memcpy (Msg + sizeof(T_MsgHdr), &ChatMsg, sizeof(T_ChatMsg));
816 mSocket->sendto (Msg, sizeof(T_MsgHdr) + sizeof(T_ChatMsg), 0, &mServer);
817 iNextBlockPosition += MAX_CHAT_MSG_LEN - 1;
822 } // FGMultiplayMgr::SendTextMessage ()
823 //////////////////////////////////////////////////////////////////////
825 //////////////////////////////////////////////////////////////////////
828 // Description: Processes data waiting at the receive socket. The
829 // processing ends when there is no more data at the socket.
831 //////////////////////////////////////////////////////////////////////
833 FGMultiplayMgr::update(double dt)
839 long stamp = SGTimeStamp::now().getSeconds();
841 //////////////////////////////////////////////////
843 //////////////////////////////////////////////////
844 mTimeUntilSend -= dt;
845 if (mTimeUntilSend <= 0.0) {
849 //////////////////////////////////////////////////
850 // Read the receive socket and process any data
851 //////////////////////////////////////////////////
855 //////////////////////////////////////////////////
856 // Although the recv call asks for
857 // MAX_PACKET_SIZE of data, the number of bytes
858 // returned will only be that of the next
859 // packet waiting to be processed.
860 //////////////////////////////////////////////////
861 simgear::IPAddress SenderAddress;
862 int RecvStatus = mSocket->recvfrom(msgBuf.Msg, sizeof(msgBuf.Msg), 0,
864 //////////////////////////////////////////////////
866 //////////////////////////////////////////////////
870 // socket error reported?
871 // errno isn't thread-safe - so only check its value when
872 // socket return status < 0 really indicates a failure.
873 if ((RecvStatus < 0)&&
874 ((errno == EAGAIN) || (errno == 0))) // MSVC output "NoError" otherwise
876 // ignore "normal" errors
882 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - Unable to receive data. "
883 << strerror(errno) << "(errno " << errno << ")");
887 // status is positive: bytes received
888 bytes = (ssize_t) RecvStatus;
889 if (bytes <= static_cast<ssize_t>(sizeof(T_MsgHdr))) {
890 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
891 << "received message with insufficient data" );
894 //////////////////////////////////////////////////
896 //////////////////////////////////////////////////
897 T_MsgHdr* MsgHdr = msgBuf.msgHdr();
898 MsgHdr->Magic = XDR_decode_uint32 (MsgHdr->Magic);
899 MsgHdr->Version = XDR_decode_uint32 (MsgHdr->Version);
900 MsgHdr->MsgId = XDR_decode_uint32 (MsgHdr->MsgId);
901 MsgHdr->MsgLen = XDR_decode_uint32 (MsgHdr->MsgLen);
902 MsgHdr->ReplyPort = XDR_decode_uint32 (MsgHdr->ReplyPort);
903 MsgHdr->Callsign[MAX_CALLSIGN_LEN -1] = '\0';
904 if (MsgHdr->Magic != MSG_MAGIC) {
905 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
906 << "message has invalid magic number!" );
909 if (MsgHdr->Version != PROTO_VER) {
910 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
911 << "message has invalid protocol number!" );
914 if (static_cast<ssize_t>(MsgHdr->MsgLen) != bytes) {
915 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
916 << "message from " << MsgHdr->Callsign << " has invalid length!");
919 //////////////////////////////////////////////////
921 //////////////////////////////////////////////////
922 switch (MsgHdr->MsgId) {
924 ProcessChatMsg(msgBuf, SenderAddress);
927 ProcessPosMsg(msgBuf, SenderAddress, stamp);
929 case UNUSABLE_POS_DATA_ID:
930 case OLD_OLD_POS_DATA_ID:
931 case OLD_PROP_MSG_ID:
932 case OLD_POS_DATA_ID:
935 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
936 << "Unknown message Id received: " << MsgHdr->MsgId );
942 MultiPlayerMap::iterator it = mMultiPlayerMap.begin();
943 while (it != mMultiPlayerMap.end()) {
944 if (it->second->getLastTimestamp() + 10 < stamp) {
945 std::string name = it->first;
946 it->second->setDie(true);
947 mMultiPlayerMap.erase(it);
948 it = mMultiPlayerMap.upper_bound(name);
952 } // FGMultiplayMgr::ProcessData(void)
953 //////////////////////////////////////////////////////////////////////
956 FGMultiplayMgr::Send()
958 using namespace simgear;
962 // smooth the send rate, by adjusting based on the 'remainder' time, which
963 // is how -ve mTimeUntilSend is. Watch for large values and ignore them,
965 if ((mTimeUntilSend < 0.0) && (fabs(mTimeUntilSend) < mDt)) {
966 mTimeUntilSend = mDt + mTimeUntilSend;
968 mTimeUntilSend = mDt;
971 double sim_time = globals->get_sim_time_sec();
972 // static double lastTime = 0.0;
974 // SG_LOG(SG_GENERAL, SG_INFO, "actual dt=" << sim_time - lastTime);
975 // lastTime = sim_time;
977 FlightProperties ifce;
979 // put together a motion info struct, you will get that later
980 // from FGInterface directly ...
981 FGExternalMotionData motionInfo;
983 // The current simulation time we need to update for,
984 // note that the simulation time is updated before calling all the
985 // update methods. Thus it contains the time intervals *end* time.
986 // The FDM is already run, so the states belong to that time.
987 motionInfo.time = sim_time;
988 motionInfo.lag = mDt;
990 // These are for now converted from lat/lon/alt and euler angles.
991 // But this should change in FGInterface ...
992 double lon = ifce.get_Longitude();
993 double lat = ifce.get_Latitude();
994 // first the aprioriate structure for the geodetic one
995 SGGeod geod = SGGeod::fromRadFt(lon, lat, ifce.get_Altitude());
996 // Convert to cartesion coordinate
997 motionInfo.position = SGVec3d::fromGeod(geod);
999 // The quaternion rotating from the earth centered frame to the
1000 // horizontal local frame
1001 SGQuatf qEc2Hl = SGQuatf::fromLonLatRad((float)lon, (float)lat);
1002 // The orientation wrt the horizontal local frame
1003 float heading = ifce.get_Psi();
1004 float pitch = ifce.get_Theta();
1005 float roll = ifce.get_Phi();
1006 SGQuatf hlOr = SGQuatf::fromYawPitchRoll(heading, pitch, roll);
1007 // The orientation of the vehicle wrt the earth centered frame
1008 motionInfo.orientation = qEc2Hl*hlOr;
1010 if (!globals->get_subsystem("flight")->is_suspended()) {
1012 motionInfo.linearVel = SG_FEET_TO_METER*SGVec3f(ifce.get_uBody(),
1015 motionInfo.angularVel = SGVec3f(ifce.get_P_body(),
1019 // accels, set that to zero for now.
1020 // Angular accelerations are missing from the interface anyway,
1021 // linear accelerations are screwed up at least for JSBSim.
1022 // motionInfo.linearAccel = SG_FEET_TO_METER*SGVec3f(ifce.get_U_dot_body(),
1023 // ifce.get_V_dot_body(),
1024 // ifce.get_W_dot_body());
1025 motionInfo.linearAccel = SGVec3f::zeros();
1026 motionInfo.angularAccel = SGVec3f::zeros();
1028 // if the interface is suspendend, prevent the client from
1029 // wild extrapolations
1030 motionInfo.linearVel = SGVec3f::zeros();
1031 motionInfo.angularVel = SGVec3f::zeros();
1032 motionInfo.linearAccel = SGVec3f::zeros();
1033 motionInfo.angularAccel = SGVec3f::zeros();
1036 // now send the properties
1037 PropertyMap::iterator it;
1038 for (it = mPropertyMap.begin(); it != mPropertyMap.end(); ++it) {
1039 FGPropertyData* pData = new FGPropertyData;
1040 pData->id = it->first;
1041 pData->type = it->second->getType();
1043 switch (pData->type) {
1047 pData->int_value = it->second->getIntValue();
1051 pData->float_value = it->second->getFloatValue();
1054 case props::UNSPECIFIED:
1056 // FIXME: We assume unspecified are strings for the moment.
1058 const char* cstr = it->second->getStringValue();
1059 int len = strlen(cstr);
1063 pData->string_value = new char[len + 1];
1064 strcpy(pData->string_value, cstr);
1069 pData->string_value = 0;
1072 //cout << " Sending property " << pData->id << " " << pData->type << " " << pData->string_value << "\n";
1076 // FIXME Currently default to a float.
1077 //cout << "Unknown type when iterating through props: " << pData->type << "\n";
1078 pData->float_value = it->second->getFloatValue();
1082 motionInfo.properties.push_back(pData);
1085 SendMyPosition(motionInfo);
1089 //////////////////////////////////////////////////////////////////////
1091 // handle a position message
1093 //////////////////////////////////////////////////////////////////////
1095 FGMultiplayMgr::ProcessPosMsg(const FGMultiplayMgr::MsgBuf& Msg,
1096 const simgear::IPAddress& SenderAddress, long stamp)
1098 const T_MsgHdr* MsgHdr = Msg.msgHdr();
1099 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + sizeof(T_PositionMsg)) {
1100 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
1101 << "Position message received with insufficient data" );
1104 const T_PositionMsg* PosMsg = Msg.posMsg();
1105 FGExternalMotionData motionInfo;
1106 motionInfo.time = XDR_decode_double(PosMsg->time);
1107 motionInfo.lag = XDR_decode_double(PosMsg->lag);
1108 for (unsigned i = 0; i < 3; ++i)
1109 motionInfo.position(i) = XDR_decode_double(PosMsg->position[i]);
1111 for (unsigned i = 0; i < 3; ++i)
1112 angleAxis(i) = XDR_decode_float(PosMsg->orientation[i]);
1113 motionInfo.orientation = SGQuatf::fromAngleAxis(angleAxis);
1114 for (unsigned i = 0; i < 3; ++i)
1115 motionInfo.linearVel(i) = XDR_decode_float(PosMsg->linearVel[i]);
1116 for (unsigned i = 0; i < 3; ++i)
1117 motionInfo.angularVel(i) = XDR_decode_float(PosMsg->angularVel[i]);
1118 for (unsigned i = 0; i < 3; ++i)
1119 motionInfo.linearAccel(i) = XDR_decode_float(PosMsg->linearAccel[i]);
1120 for (unsigned i = 0; i < 3; ++i)
1121 motionInfo.angularAccel(i) = XDR_decode_float(PosMsg->angularAccel[i]);
1123 // sanity check: do not allow injection of corrupted data (NaNs)
1124 if (!isSane(motionInfo))
1126 // drop this message, keep old position until receiving valid data
1127 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::ProcessPosMsg - "
1128 << "Position message with invalid data (NaN) received from "
1129 << MsgHdr->Callsign);
1133 //cout << "INPUT MESSAGE\n";
1135 // There was a bug in 1.9.0 and before: T_PositionMsg was 196 bytes
1136 // on 32 bit architectures and 200 bytes on 64 bit, and this
1137 // structure is put directly on the wire. By looking at the padding,
1138 // we can sort through the mess, mostly:
1139 // If padding is 0 (which is not a valid property type), then the
1140 // message was produced by a new client or an old 64 bit client that
1141 // happened to have 0 on the stack;
1142 // Else if the property list starting with the padding word is
1143 // well-formed, then the client is probably an old 32 bit client and
1144 // we'll go with that;
1145 // Else it is an old 64-bit client and properties start after the
1147 // There is a chance that we could be fooled by garbage in the
1148 // padding looking like a valid property, so verifyProperties() is
1149 // strict about the validity of the property values.
1150 const xdr_data_t* xdr = Msg.properties();
1151 if (PosMsg->pad != 0) {
1152 if (verifyProperties(&PosMsg->pad, Msg.propsRecvdEnd()))
1154 else if (!verifyProperties(xdr, Msg.propsRecvdEnd()))
1157 while (xdr < Msg.propsRecvdEnd()) {
1158 // simgear::props::Type type = simgear::props::UNSPECIFIED;
1160 // First element is always the ID
1161 unsigned id = XDR_decode_uint32(*xdr);
1162 //cout << pData->id << " ";
1165 // Check the ID actually exists and get the type
1166 const IdPropertyList* plist = findProperty(id);
1170 FGPropertyData* pData = new FGPropertyData;
1172 pData->type = plist->type;
1173 // How we decode the remainder of the property depends on the type
1174 switch (pData->type) {
1175 case simgear::props::INT:
1176 case simgear::props::BOOL:
1177 case simgear::props::LONG:
1178 pData->int_value = XDR_decode_uint32(*xdr);
1180 //cout << pData->int_value << "\n";
1182 case simgear::props::FLOAT:
1183 case simgear::props::DOUBLE:
1184 pData->float_value = XDR_decode_float(*xdr);
1186 //cout << pData->float_value << "\n";
1188 case simgear::props::STRING:
1189 case simgear::props::UNSPECIFIED:
1191 // String is complicated. It consists of
1192 // The length of the string
1193 // The string itself
1194 // Padding to the nearest 4-bytes.
1195 uint32_t length = XDR_decode_uint32(*xdr);
1197 //cout << length << " ";
1198 // Old versions truncated the string but left the length unadjusted.
1199 if (length > MAX_TEXT_SIZE)
1200 length = MAX_TEXT_SIZE;
1201 pData->string_value = new char[length + 1];
1202 //cout << " String: ";
1203 for (unsigned i = 0; i < length; i++)
1205 pData->string_value[i] = (char) XDR_decode_int8(*xdr);
1207 //cout << pData->string_value[i];
1210 pData->string_value[length] = '\0';
1212 // Now handle the padding
1213 while ((length % 4) != 0)
1224 pData->float_value = XDR_decode_float(*xdr);
1225 SG_LOG(SG_NETWORK, SG_DEBUG, "Unknown Prop type " << pData->id << " " << pData->type);
1230 motionInfo.properties.push_back(pData);
1234 // We failed to find the property. We'll try the next packet immediately.
1235 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::ProcessPosMsg - "
1236 "message from " << MsgHdr->Callsign << " has unknown property id "
1241 FGAIMultiplayer* mp = getMultiplayer(MsgHdr->Callsign);
1243 mp = addMultiplayer(MsgHdr->Callsign, PosMsg->Model);
1244 mp->addMotionInfo(motionInfo, stamp);
1245 } // FGMultiplayMgr::ProcessPosMsg()
1246 //////////////////////////////////////////////////////////////////////
1248 //////////////////////////////////////////////////////////////////////
1250 // handle a chat message
1251 // FIXME: display chat message within flightgear
1253 //////////////////////////////////////////////////////////////////////
1255 FGMultiplayMgr::ProcessChatMsg(const MsgBuf& Msg,
1256 const simgear::IPAddress& SenderAddress)
1258 const T_MsgHdr* MsgHdr = Msg.msgHdr();
1259 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + 1) {
1260 SG_LOG( SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::MP_ProcessData - "
1261 << "Chat message received with insufficient data" );
1265 char *chatStr = new char[MsgHdr->MsgLen - sizeof(T_MsgHdr)];
1266 const T_ChatMsg* ChatMsg
1267 = reinterpret_cast<const T_ChatMsg *>(Msg.Msg + sizeof(T_MsgHdr));
1268 strncpy(chatStr, ChatMsg->Text,
1269 MsgHdr->MsgLen - sizeof(T_MsgHdr));
1270 chatStr[MsgHdr->MsgLen - sizeof(T_MsgHdr) - 1] = '\0';
1272 SG_LOG (SG_NETWORK, SG_WARN, "Chat [" << MsgHdr->Callsign << "]"
1276 } // FGMultiplayMgr::ProcessChatMsg ()
1277 //////////////////////////////////////////////////////////////////////
1280 FGMultiplayMgr::FillMsgHdr(T_MsgHdr *MsgHdr, int MsgId, unsigned _len)
1285 len = sizeof(T_MsgHdr) + sizeof(T_ChatMsg);
1291 len = sizeof(T_MsgHdr);
1294 MsgHdr->Magic = XDR_encode_uint32(MSG_MAGIC);
1295 MsgHdr->Version = XDR_encode_uint32(PROTO_VER);
1296 MsgHdr->MsgId = XDR_encode_uint32(MsgId);
1297 MsgHdr->MsgLen = XDR_encode_uint32(len);
1298 MsgHdr->ReplyAddress = 0; // Are obsolete, keep them for the server for
1299 MsgHdr->ReplyPort = 0; // now
1300 strncpy(MsgHdr->Callsign, mCallsign.c_str(), MAX_CALLSIGN_LEN);
1301 MsgHdr->Callsign[MAX_CALLSIGN_LEN - 1] = '\0';
1305 FGMultiplayMgr::addMultiplayer(const std::string& callsign,
1306 const std::string& modelName)
1308 if (0 < mMultiPlayerMap.count(callsign))
1309 return mMultiPlayerMap[callsign].get();
1311 FGAIMultiplayer* mp = new FGAIMultiplayer;
1312 mp->setPath(modelName.c_str());
1313 mp->setCallSign(callsign);
1314 mMultiPlayerMap[callsign] = mp;
1316 FGAIManager *aiMgr = (FGAIManager*)globals->get_subsystem("ai-model");
1320 /// FIXME: that must follow the attach ATM ...
1321 for (unsigned i = 0; i < numProperties; ++i)
1322 mp->addPropertyId(sIdPropertyList[i].id, sIdPropertyList[i].name);
1329 FGMultiplayMgr::getMultiplayer(const std::string& callsign)
1331 if (0 < mMultiPlayerMap.count(callsign))
1332 return mMultiPlayerMap[callsign].get();
1338 FGMultiplayMgr::findProperties()
1340 if (!mPropertiesChanged) {
1344 mPropertiesChanged = false;
1346 for (unsigned i = 0; i < numProperties; ++i) {
1347 const char* name = sIdPropertyList[i].name;
1348 SGPropertyNode* pNode = globals->get_props()->getNode(name);
1353 int id = sIdPropertyList[i].id;
1354 if (mPropertyMap.find(id) != mPropertyMap.end()) {
1355 continue; // already activated
1358 mPropertyMap[id] = pNode;
1359 SG_LOG(SG_NETWORK, SG_DEBUG, "activating MP property:" << pNode->getPath());