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 //////////////////////////////////////////////////////////////////////
37 #include <osg/Math> // isNaN
38 #include <plib/netSocket.h>
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 <Main/fg_props.hxx>
47 #include "multiplaymgr.hxx"
48 #include "mpmessages.hxx"
52 #define MAX_PACKET_SIZE 1200
53 #define MAX_TEXT_SIZE 128
55 // These constants are provided so that the ident
56 // command can list file versions
57 const char sMULTIPLAYMGR_BID[] = "$Id$";
58 const char sMULTIPLAYMGR_HID[] = MULTIPLAYTXMGR_HID;
60 // A static map of protocol property id values to property paths,
61 // This should be extendable dynamically for every specific aircraft ...
62 // For now only that static list
63 FGMultiplayMgr::IdPropertyList
64 const FGMultiplayMgr::sIdPropertyList[] = {
65 {100, "surface-positions/left-aileron-pos-norm", SGPropertyNode::FLOAT},
66 {101, "surface-positions/right-aileron-pos-norm", SGPropertyNode::FLOAT},
67 {102, "surface-positions/elevator-pos-norm", SGPropertyNode::FLOAT},
68 {103, "surface-positions/rudder-pos-norm", SGPropertyNode::FLOAT},
69 {104, "surface-positions/flap-pos-norm", SGPropertyNode::FLOAT},
70 {105, "surface-positions/speedbrake-pos-norm", SGPropertyNode::FLOAT},
71 {106, "gear/tailhook/position-norm", SGPropertyNode::FLOAT},
72 {107, "gear/launchbar/position-norm", SGPropertyNode::FLOAT},
73 {108, "gear/launchbar/state", SGPropertyNode::STRING},
74 {109, "gear/launchbar/holdback-position-norm", SGPropertyNode::FLOAT},
75 {110, "canopy/position-norm", SGPropertyNode::FLOAT},
76 {111, "surface-positions/wing-pos-norm", SGPropertyNode::FLOAT},
77 {112, "surface-positions/wing-fold-pos-norm", SGPropertyNode::FLOAT},
79 {200, "gear/gear[0]/compression-norm", SGPropertyNode::FLOAT},
80 {201, "gear/gear[0]/position-norm", SGPropertyNode::FLOAT},
81 {210, "gear/gear[1]/compression-norm", SGPropertyNode::FLOAT},
82 {211, "gear/gear[1]/position-norm", SGPropertyNode::FLOAT},
83 {220, "gear/gear[2]/compression-norm", SGPropertyNode::FLOAT},
84 {221, "gear/gear[2]/position-norm", SGPropertyNode::FLOAT},
85 {230, "gear/gear[3]/compression-norm", SGPropertyNode::FLOAT},
86 {231, "gear/gear[3]/position-norm", SGPropertyNode::FLOAT},
87 {240, "gear/gear[4]/compression-norm", SGPropertyNode::FLOAT},
88 {241, "gear/gear[4]/position-norm", SGPropertyNode::FLOAT},
90 {300, "engines/engine[0]/n1", SGPropertyNode::FLOAT},
91 {301, "engines/engine[0]/n2", SGPropertyNode::FLOAT},
92 {302, "engines/engine[0]/rpm", SGPropertyNode::FLOAT},
93 {310, "engines/engine[1]/n1", SGPropertyNode::FLOAT},
94 {311, "engines/engine[1]/n2", SGPropertyNode::FLOAT},
95 {312, "engines/engine[1]/rpm", SGPropertyNode::FLOAT},
96 {320, "engines/engine[2]/n1", SGPropertyNode::FLOAT},
97 {321, "engines/engine[2]/n2", SGPropertyNode::FLOAT},
98 {322, "engines/engine[2]/rpm", SGPropertyNode::FLOAT},
99 {330, "engines/engine[3]/n1", SGPropertyNode::FLOAT},
100 {331, "engines/engine[3]/n2", SGPropertyNode::FLOAT},
101 {332, "engines/engine[3]/rpm", SGPropertyNode::FLOAT},
102 {340, "engines/engine[4]/n1", SGPropertyNode::FLOAT},
103 {341, "engines/engine[4]/n2", SGPropertyNode::FLOAT},
104 {342, "engines/engine[4]/rpm", SGPropertyNode::FLOAT},
105 {350, "engines/engine[5]/n1", SGPropertyNode::FLOAT},
106 {351, "engines/engine[5]/n2", SGPropertyNode::FLOAT},
107 {352, "engines/engine[5]/rpm", SGPropertyNode::FLOAT},
108 {360, "engines/engine[6]/n1", SGPropertyNode::FLOAT},
109 {361, "engines/engine[6]/n2", SGPropertyNode::FLOAT},
110 {362, "engines/engine[6]/rpm", SGPropertyNode::FLOAT},
111 {370, "engines/engine[7]/n1", SGPropertyNode::FLOAT},
112 {371, "engines/engine[7]/n2", SGPropertyNode::FLOAT},
113 {372, "engines/engine[7]/rpm", SGPropertyNode::FLOAT},
114 {380, "engines/engine[8]/n1", SGPropertyNode::FLOAT},
115 {381, "engines/engine[8]/n2", SGPropertyNode::FLOAT},
116 {382, "engines/engine[8]/rpm", SGPropertyNode::FLOAT},
117 {390, "engines/engine[9]/n1", SGPropertyNode::FLOAT},
118 {391, "engines/engine[9]/n2", SGPropertyNode::FLOAT},
119 {392, "engines/engine[9]/rpm", SGPropertyNode::FLOAT},
121 {800, "rotors/main/rpm", SGPropertyNode::FLOAT},
122 {801, "rotors/tail/rpm", SGPropertyNode::FLOAT},
123 {810, "rotors/main/blade[0]/position-deg", SGPropertyNode::FLOAT},
124 {811, "rotors/main/blade[1]/position-deg", SGPropertyNode::FLOAT},
125 {812, "rotors/main/blade[2]/position-deg", SGPropertyNode::FLOAT},
126 {813, "rotors/main/blade[3]/position-deg", SGPropertyNode::FLOAT},
127 {820, "rotors/main/blade[0]/flap-deg", SGPropertyNode::FLOAT},
128 {821, "rotors/main/blade[1]/flap-deg", SGPropertyNode::FLOAT},
129 {822, "rotors/main/blade[2]/flap-deg", SGPropertyNode::FLOAT},
130 {823, "rotors/main/blade[3]/flap-deg", SGPropertyNode::FLOAT},
131 {830, "rotors/tail/blade[0]/position-deg", SGPropertyNode::FLOAT},
132 {831, "rotors/tail/blade[1]/position-deg", SGPropertyNode::FLOAT},
134 {900, "sim/hitches/aerotow/tow/length", SGPropertyNode::FLOAT},
135 {901, "sim/hitches/aerotow/tow/elastic-constant", SGPropertyNode::FLOAT},
136 {902, "sim/hitches/aerotow/tow/weight-per-m-kg-m", SGPropertyNode::FLOAT},
137 {903, "sim/hitches/aerotow/tow/dist", SGPropertyNode::FLOAT},
138 {904, "sim/hitches/aerotow/tow/connected-to-property-node", SGPropertyNode::BOOL},
139 {905, "sim/hitches/aerotow/tow/connected-to-ai-or-mp-callsign", SGPropertyNode::STRING},
140 {906, "sim/hitches/aerotow/tow/brake-force", SGPropertyNode::FLOAT},
141 {907, "sim/hitches/aerotow/tow/end-force-x", SGPropertyNode::FLOAT},
142 {908, "sim/hitches/aerotow/tow/end-force-y", SGPropertyNode::FLOAT},
143 {909, "sim/hitches/aerotow/tow/end-force-z", SGPropertyNode::FLOAT},
144 {930, "sim/hitches/aerotow/is-slave", SGPropertyNode::BOOL},
145 {931, "sim/hitches/aerotow/speed-in-tow-direction", SGPropertyNode::FLOAT},
146 {932, "sim/hitches/aerotow/open", SGPropertyNode::BOOL},
147 {933, "sim/hitches/aerotow/local-pos-x", SGPropertyNode::FLOAT},
148 {934, "sim/hitches/aerotow/local-pos-y", SGPropertyNode::FLOAT},
149 {935, "sim/hitches/aerotow/local-pos-z", SGPropertyNode::FLOAT},
151 {1001, "controls/flight/slats", SGPropertyNode::FLOAT},
152 {1002, "controls/flight/speedbrake", SGPropertyNode::FLOAT},
153 {1003, "controls/flight/spoilers", SGPropertyNode::FLOAT},
154 {1004, "controls/gear/gear-down", SGPropertyNode::FLOAT},
155 {1005, "controls/lighting/nav-lights", SGPropertyNode::FLOAT},
156 {1006, "controls/armament/station[0]/jettison-all", SGPropertyNode::BOOL},
158 {1100, "sim/model/variant", SGPropertyNode::INT},
159 {1101, "sim/model/livery/file", SGPropertyNode::STRING},
161 {1200, "environment/wildfire/data", SGPropertyNode::STRING},
163 {10001, "sim/multiplay/transmission-freq-hz", SGPropertyNode::STRING},
164 {10002, "sim/multiplay/chat", SGPropertyNode::STRING},
166 {10100, "sim/multiplay/generic/string[0]", SGPropertyNode::STRING},
167 {10101, "sim/multiplay/generic/string[1]", SGPropertyNode::STRING},
168 {10102, "sim/multiplay/generic/string[2]", SGPropertyNode::STRING},
169 {10103, "sim/multiplay/generic/string[3]", SGPropertyNode::STRING},
170 {10104, "sim/multiplay/generic/string[4]", SGPropertyNode::STRING},
171 {10105, "sim/multiplay/generic/string[5]", SGPropertyNode::STRING},
172 {10106, "sim/multiplay/generic/string[6]", SGPropertyNode::STRING},
173 {10107, "sim/multiplay/generic/string[7]", SGPropertyNode::STRING},
174 {10108, "sim/multiplay/generic/string[8]", SGPropertyNode::STRING},
175 {10109, "sim/multiplay/generic/string[9]", SGPropertyNode::STRING},
176 {10110, "sim/multiplay/generic/string[10]", SGPropertyNode::STRING},
177 {10111, "sim/multiplay/generic/string[11]", SGPropertyNode::STRING},
178 {10112, "sim/multiplay/generic/string[12]", SGPropertyNode::STRING},
179 {10113, "sim/multiplay/generic/string[13]", SGPropertyNode::STRING},
180 {10114, "sim/multiplay/generic/string[14]", SGPropertyNode::STRING},
181 {10115, "sim/multiplay/generic/string[15]", SGPropertyNode::STRING},
182 {10116, "sim/multiplay/generic/string[16]", SGPropertyNode::STRING},
183 {10117, "sim/multiplay/generic/string[17]", SGPropertyNode::STRING},
184 {10118, "sim/multiplay/generic/string[18]", SGPropertyNode::STRING},
185 {10119, "sim/multiplay/generic/string[19]", SGPropertyNode::STRING},
187 {10200, "sim/multiplay/generic/float[0]", SGPropertyNode::FLOAT},
188 {10201, "sim/multiplay/generic/float[1]", SGPropertyNode::FLOAT},
189 {10202, "sim/multiplay/generic/float[2]", SGPropertyNode::FLOAT},
190 {10203, "sim/multiplay/generic/float[3]", SGPropertyNode::FLOAT},
191 {10204, "sim/multiplay/generic/float[4]", SGPropertyNode::FLOAT},
192 {10205, "sim/multiplay/generic/float[5]", SGPropertyNode::FLOAT},
193 {10206, "sim/multiplay/generic/float[6]", SGPropertyNode::FLOAT},
194 {10207, "sim/multiplay/generic/float[7]", SGPropertyNode::FLOAT},
195 {10208, "sim/multiplay/generic/float[8]", SGPropertyNode::FLOAT},
196 {10209, "sim/multiplay/generic/float[9]", SGPropertyNode::FLOAT},
197 {10210, "sim/multiplay/generic/float[10]", SGPropertyNode::FLOAT},
198 {10211, "sim/multiplay/generic/float[11]", SGPropertyNode::FLOAT},
199 {10212, "sim/multiplay/generic/float[12]", SGPropertyNode::FLOAT},
200 {10213, "sim/multiplay/generic/float[13]", SGPropertyNode::FLOAT},
201 {10214, "sim/multiplay/generic/float[14]", SGPropertyNode::FLOAT},
202 {10215, "sim/multiplay/generic/float[15]", SGPropertyNode::FLOAT},
203 {10216, "sim/multiplay/generic/float[16]", SGPropertyNode::FLOAT},
204 {10217, "sim/multiplay/generic/float[17]", SGPropertyNode::FLOAT},
205 {10218, "sim/multiplay/generic/float[18]", SGPropertyNode::FLOAT},
206 {10219, "sim/multiplay/generic/float[19]", SGPropertyNode::FLOAT},
208 {10300, "sim/multiplay/generic/int[0]", SGPropertyNode::INT},
209 {10301, "sim/multiplay/generic/int[1]", SGPropertyNode::INT},
210 {10302, "sim/multiplay/generic/int[2]", SGPropertyNode::INT},
211 {10303, "sim/multiplay/generic/int[3]", SGPropertyNode::INT},
212 {10304, "sim/multiplay/generic/int[4]", SGPropertyNode::INT},
213 {10305, "sim/multiplay/generic/int[5]", SGPropertyNode::INT},
214 {10306, "sim/multiplay/generic/int[6]", SGPropertyNode::INT},
215 {10307, "sim/multiplay/generic/int[7]", SGPropertyNode::INT},
216 {10308, "sim/multiplay/generic/int[8]", SGPropertyNode::INT},
217 {10309, "sim/multiplay/generic/int[9]", SGPropertyNode::INT},
218 {10310, "sim/multiplay/generic/int[10]", SGPropertyNode::INT},
219 {10311, "sim/multiplay/generic/int[11]", SGPropertyNode::INT},
220 {10312, "sim/multiplay/generic/int[12]", SGPropertyNode::INT},
221 {10313, "sim/multiplay/generic/int[13]", SGPropertyNode::INT},
222 {10314, "sim/multiplay/generic/int[14]", SGPropertyNode::INT},
223 {10315, "sim/multiplay/generic/int[15]", SGPropertyNode::INT},
224 {10316, "sim/multiplay/generic/int[16]", SGPropertyNode::INT},
225 {10317, "sim/multiplay/generic/int[17]", SGPropertyNode::INT},
226 {10318, "sim/multiplay/generic/int[18]", SGPropertyNode::INT},
227 {10319, "sim/multiplay/generic/int[19]", SGPropertyNode::INT},
231 FGMultiplayMgr::numProperties = (sizeof(FGMultiplayMgr::sIdPropertyList)
232 / sizeof(FGMultiplayMgr::sIdPropertyList[0]));
234 // Look up a property ID using binary search.
237 struct ComparePropertyId
239 bool operator()(const FGMultiplayMgr::IdPropertyList& lhs,
240 const FGMultiplayMgr::IdPropertyList& rhs)
242 return lhs.id < rhs.id;
244 bool operator()(const FGMultiplayMgr::IdPropertyList& lhs,
249 bool operator()(unsigned id,
250 const FGMultiplayMgr::IdPropertyList& rhs)
257 const FGMultiplayMgr::IdPropertyList* FGMultiplayMgr::findProperty(unsigned id)
259 std::pair<const IdPropertyList*, const IdPropertyList*> result
260 = std::equal_range(sIdPropertyList, sIdPropertyList + numProperties, id,
261 ComparePropertyId());
262 if (result.first == result.second) {
271 bool verifyProperties(const xdr_data_t* data, const xdr_data_t* end)
273 const xdr_data_t* xdr = data;
275 unsigned id = XDR_decode_uint32(*xdr);
276 const FGMultiplayMgr::IdPropertyList* plist
277 = FGMultiplayMgr::findProperty(id);
281 // How we decode the remainder of the property depends on the type
282 switch (plist->type) {
283 case SGPropertyNode::INT:
284 case SGPropertyNode::BOOL:
285 case SGPropertyNode::LONG:
288 case SGPropertyNode::FLOAT:
289 case SGPropertyNode::DOUBLE:
291 float val = XDR_decode_float(*xdr);
297 case SGPropertyNode::STRING:
298 case SGPropertyNode::UNSPECIFIED:
300 // String is complicated. It consists of
301 // The length of the string
303 // Padding to the nearest 4-bytes.
304 // XXX Yes, each byte is padded out to a word! Too late
306 uint32_t length = XDR_decode_uint32(*xdr);
308 // Old versions truncated the string but left the length
310 if (length > MAX_TEXT_SIZE)
311 length = MAX_TEXT_SIZE;
313 // Now handle the padding
314 while ((length % 4) != 0)
323 // cerr << "Unknown Prop type " << id << " " << type << "\n";
329 // give up; this is a malformed property list.
336 //////////////////////////////////////////////////////////////////////
338 // MultiplayMgr constructor
340 //////////////////////////////////////////////////////////////////////
341 FGMultiplayMgr::FGMultiplayMgr()
344 mInitialised = false;
346 } // FGMultiplayMgr::FGMultiplayMgr()
347 //////////////////////////////////////////////////////////////////////
349 //////////////////////////////////////////////////////////////////////
351 // MultiplayMgr destructor
353 //////////////////////////////////////////////////////////////////////
354 FGMultiplayMgr::~FGMultiplayMgr()
357 } // FGMultiplayMgr::~FGMultiplayMgr()
358 //////////////////////////////////////////////////////////////////////
360 //////////////////////////////////////////////////////////////////////
364 //////////////////////////////////////////////////////////////////////
366 FGMultiplayMgr::init (void)
368 //////////////////////////////////////////////////
369 // Initialise object if not already done
370 //////////////////////////////////////////////////
372 SG_LOG(SG_NETWORK, SG_WARN, "FGMultiplayMgr::init - already initialised");
375 //////////////////////////////////////////////////
376 // Set members from property values
377 //////////////////////////////////////////////////
378 short rxPort = fgGetInt("/sim/multiplay/rxport");
379 string rxAddress = fgGetString("/sim/multiplay/rxhost");
380 short txPort = fgGetInt("/sim/multiplay/txport");
381 string txAddress = fgGetString("/sim/multiplay/txhost");
382 mCallsign = fgGetString("/sim/multiplay/callsign");
383 if (txPort > 0 && !txAddress.empty()) {
384 mServer.set(txAddress.c_str(), txPort);
385 if (strncmp (mServer.getHost(), "0.0.0.0", 8) == 0) {
387 SG_LOG(SG_NETWORK, SG_ALERT,
388 "FGMultiplayMgr - could not resolve '"
389 << txAddress << "', Multiplayermode disabled");
397 SG_LOG(SG_NETWORK, SG_ALERT,
398 "FGMultiplayMgr - No receiver port, Multiplayermode disabled");
401 if (mCallsign.empty())
402 mCallsign = "JohnDoe"; // FIXME: use getpwuid
403 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-txaddress= "<<txAddress);
404 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-txport= "<<txPort );
405 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-rxaddress="<<rxAddress );
406 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-rxport= "<<rxPort);
407 SG_LOG(SG_NETWORK,SG_INFO,"FGMultiplayMgr::init-callsign= "<<mCallsign);
408 Close(); // Should Init be called twice, close Socket first
409 // A memory leak was reported here by valgrind
410 mSocket = new netSocket();
411 if (!mSocket->open(false)) {
412 SG_LOG( SG_NETWORK, SG_ALERT,
413 "FGMultiplayMgr::init - Failed to create data socket" );
416 mSocket->setBlocking(false);
417 if (mSocket->bind(rxAddress.c_str(), rxPort) != 0) {
419 SG_LOG( SG_NETWORK, SG_ALERT,
420 "FGMultiplayMgr::Open - Failed to bind receive socket" );
425 } // FGMultiplayMgr::init()
426 //////////////////////////////////////////////////////////////////////
428 //////////////////////////////////////////////////////////////////////
430 // Closes and deletes the local player object. Closes
431 // and deletes the tx socket. Resets the object state to unitialised.
433 //////////////////////////////////////////////////////////////////////
435 FGMultiplayMgr::Close (void)
437 mMultiPlayerMap.clear();
444 mInitialised = false;
445 } // FGMultiplayMgr::Close(void)
446 //////////////////////////////////////////////////////////////////////
448 //////////////////////////////////////////////////////////////////////
450 // Description: Sends the position data for the local position.
452 //////////////////////////////////////////////////////////////////////
455 * The buffer that holds a multi-player message, suitably aligned.
457 union FGMultiplayMgr::MsgBuf
461 memset(&Msg, 0, sizeof(Msg));
466 return reinterpret_cast<T_MsgHdr*>(Msg);
469 const T_MsgHdr* msgHdr() const
471 return reinterpret_cast<const T_MsgHdr*>(Msg);
474 T_PositionMsg* posMsg()
476 return reinterpret_cast<T_PositionMsg*>(Msg + sizeof(T_MsgHdr));
479 const T_PositionMsg* posMsg() const
481 return reinterpret_cast<const T_PositionMsg*>(Msg + sizeof(T_MsgHdr));
484 xdr_data_t* properties()
486 return reinterpret_cast<xdr_data_t*>(Msg + sizeof(T_MsgHdr)
487 + sizeof(T_PositionMsg));
490 const xdr_data_t* properties() const
492 return reinterpret_cast<const xdr_data_t*>(Msg + sizeof(T_MsgHdr)
493 + sizeof(T_PositionMsg));
496 * The end of the properties buffer.
498 xdr_data_t* propsEnd()
500 return reinterpret_cast<xdr_data_t*>(Msg + MAX_PACKET_SIZE);
503 const xdr_data_t* propsEnd() const
505 return reinterpret_cast<const xdr_data_t*>(Msg + MAX_PACKET_SIZE);
508 * The end of properties actually in the buffer. This assumes that
509 * the message header is valid.
511 xdr_data_t* propsRecvdEnd()
513 return reinterpret_cast<xdr_data_t*>(Msg + msgHdr()->MsgLen);
516 const xdr_data_t* propsRecvdEnd() const
518 return reinterpret_cast<const xdr_data_t*>(Msg + msgHdr()->MsgLen);
521 xdr_data2_t double_val;
522 char Msg[MAX_PACKET_SIZE];
526 FGMultiplayMgr::SendMyPosition(const FGExternalMotionData& motionInfo)
528 if ((! mInitialised) || (! mHaveServer))
531 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::SendMyPosition - no server");
536 T_PositionMsg* PosMsg = msgBuf.posMsg();
538 strncpy(PosMsg->Model, fgGetString("/sim/model/path"), MAX_MODEL_NAME_LEN);
539 PosMsg->Model[MAX_MODEL_NAME_LEN - 1] = '\0';
541 PosMsg->time = XDR_encode_double (motionInfo.time);
542 PosMsg->lag = XDR_encode_double (motionInfo.lag);
543 for (unsigned i = 0 ; i < 3; ++i)
544 PosMsg->position[i] = XDR_encode_double (motionInfo.position(i));
546 motionInfo.orientation.getAngleAxis(angleAxis);
547 for (unsigned i = 0 ; i < 3; ++i)
548 PosMsg->orientation[i] = XDR_encode_float (angleAxis(i));
549 for (unsigned i = 0 ; i < 3; ++i)
550 PosMsg->linearVel[i] = XDR_encode_float (motionInfo.linearVel(i));
551 for (unsigned i = 0 ; i < 3; ++i)
552 PosMsg->angularVel[i] = XDR_encode_float (motionInfo.angularVel(i));
553 for (unsigned i = 0 ; i < 3; ++i)
554 PosMsg->linearAccel[i] = XDR_encode_float (motionInfo.linearAccel(i));
555 for (unsigned i = 0 ; i < 3; ++i)
556 PosMsg->angularAccel[i] = XDR_encode_float (motionInfo.angularAccel(i));
558 xdr_data_t* ptr = msgBuf.properties();
559 std::vector<FGPropertyData*>::const_iterator it;
560 it = motionInfo.properties.begin();
561 //cout << "OUTPUT PROPERTIES\n";
562 xdr_data_t* msgEnd = msgBuf.propsEnd();
563 while (it != motionInfo.properties.end() && ptr + 2 < msgEnd) {
565 // First element is the ID. Write it out when we know we have room for
566 // the whole property.
567 xdr_data_t id = XDR_encode_uint32((*it)->id);
568 // The actual data representation depends on the type
569 switch ((*it)->type) {
570 case SGPropertyNode::INT:
571 case SGPropertyNode::BOOL:
572 case SGPropertyNode::LONG:
574 *ptr++ = XDR_encode_uint32((*it)->int_value);
575 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->int_value << "\n";
577 case SGPropertyNode::FLOAT:
578 case SGPropertyNode::DOUBLE:
580 *ptr++ = XDR_encode_float((*it)->float_value);
581 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
583 case SGPropertyNode::STRING:
584 case SGPropertyNode::UNSPECIFIED:
586 // String is complicated. It consists of
587 // The length of the string
589 // Padding to the nearest 4-bytes.
590 const char* lcharptr = (*it)->string_value;
595 ////cout << "String length: " << strlen(lcharptr) << "\n";
596 uint32_t len = strlen(lcharptr);
597 if (len > MAX_TEXT_SIZE)
599 // XXX This should not be using 4 bytes per character!
600 // If there's not enough room for this property, drop it
602 if (ptr + 2 + ((len + 3) & ~3) > msgEnd)
604 //cout << "String length unint32: " << len << "\n";
606 *ptr++ = XDR_encode_uint32(len);
609 // Now the text itself
610 // XXX This should not be using 4 bytes per character!
612 while ((*lcharptr != '\0') && (lcount < MAX_TEXT_SIZE))
614 *ptr++ = XDR_encode_int8(*lcharptr);
619 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " " << len << " " << (*it)->string_value;
621 // Now pad if required
622 while ((lcount % 4) != 0)
624 *ptr++ = XDR_encode_int8(0);
636 *ptr++ = XDR_encode_uint32(0);
637 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " 0\n";
643 //cout << " Unknown Type: " << (*it)->type << "\n";
645 *ptr++ = XDR_encode_float((*it)->float_value);;
646 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
653 unsigned msgLen = reinterpret_cast<char*>(ptr) - msgBuf.Msg;
654 FillMsgHdr(msgBuf.msgHdr(), POS_DATA_ID, msgLen);
655 mSocket->sendto(msgBuf.Msg, msgLen, 0, &mServer);
656 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::SendMyPosition");
657 } // FGMultiplayMgr::SendMyPosition()
659 //////////////////////////////////////////////////////////////////////
661 //////////////////////////////////////////////////////////////////////
663 // Name: SendTextMessage
664 // Description: Sends a message to the player. The message must
665 // contain a valid and correctly filled out header and optional
668 //////////////////////////////////////////////////////////////////////
670 FGMultiplayMgr::SendTextMessage(const string &MsgText)
672 if (!mInitialised || !mHaveServer)
676 FillMsgHdr(&MsgHdr, CHAT_MSG_ID);
677 //////////////////////////////////////////////////
678 // Divide the text string into blocks that fit
679 // in the message and send the blocks.
680 //////////////////////////////////////////////////
681 unsigned iNextBlockPosition = 0;
684 char Msg[sizeof(T_MsgHdr) + sizeof(T_ChatMsg)];
685 while (iNextBlockPosition < MsgText.length()) {
686 strncpy (ChatMsg.Text,
687 MsgText.substr(iNextBlockPosition, MAX_CHAT_MSG_LEN - 1).c_str(),
689 ChatMsg.Text[MAX_CHAT_MSG_LEN - 1] = '\0';
690 memcpy (Msg, &MsgHdr, sizeof(T_MsgHdr));
691 memcpy (Msg + sizeof(T_MsgHdr), &ChatMsg, sizeof(T_ChatMsg));
692 mSocket->sendto (Msg, sizeof(T_MsgHdr) + sizeof(T_ChatMsg), 0, &mServer);
693 iNextBlockPosition += MAX_CHAT_MSG_LEN - 1;
698 } // FGMultiplayMgr::SendTextMessage ()
699 //////////////////////////////////////////////////////////////////////
701 //////////////////////////////////////////////////////////////////////
704 // Description: Processes data waiting at the receive socket. The
705 // processing ends when there is no more data at the socket.
707 //////////////////////////////////////////////////////////////////////
709 FGMultiplayMgr::Update(void)
715 long stamp = SGTimeStamp::now().getSeconds();
717 //////////////////////////////////////////////////
718 // Read the receive socket and process any data
719 //////////////////////////////////////////////////
723 //////////////////////////////////////////////////
724 // Although the recv call asks for
725 // MAX_PACKET_SIZE of data, the number of bytes
726 // returned will only be that of the next
727 // packet waiting to be processed.
728 //////////////////////////////////////////////////
729 netAddress SenderAddress;
730 bytes = mSocket->recvfrom(msgBuf.Msg, sizeof(msgBuf.Msg), 0,
732 //////////////////////////////////////////////////
734 //////////////////////////////////////////////////
736 if (errno != EAGAIN && errno != 0) // MSVC output "NoError" otherwise
737 perror("FGMultiplayMgr::MP_ProcessData");
740 if (bytes <= sizeof(T_MsgHdr)) {
741 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
742 << "received message with insufficient data" );
745 //////////////////////////////////////////////////
747 //////////////////////////////////////////////////
748 T_MsgHdr* MsgHdr = msgBuf.msgHdr();
749 MsgHdr->Magic = XDR_decode_uint32 (MsgHdr->Magic);
750 MsgHdr->Version = XDR_decode_uint32 (MsgHdr->Version);
751 MsgHdr->MsgId = XDR_decode_uint32 (MsgHdr->MsgId);
752 MsgHdr->MsgLen = XDR_decode_uint32 (MsgHdr->MsgLen);
753 MsgHdr->ReplyPort = XDR_decode_uint32 (MsgHdr->ReplyPort);
754 MsgHdr->Callsign[MAX_CALLSIGN_LEN -1] = '\0';
755 if (MsgHdr->Magic != MSG_MAGIC) {
756 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
757 << "message has invalid magic number!" );
760 if (MsgHdr->Version != PROTO_VER) {
761 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
762 << "message has invalid protocoll number!" );
765 if (MsgHdr->MsgLen != bytes) {
766 SG_LOG(SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
767 << "message from " << MsgHdr->Callsign << " has invalid length!");
770 //////////////////////////////////////////////////
772 //////////////////////////////////////////////////
773 switch (MsgHdr->MsgId) {
775 ProcessChatMsg(msgBuf, SenderAddress);
778 ProcessPosMsg(msgBuf, SenderAddress, stamp);
780 case UNUSABLE_POS_DATA_ID:
781 case OLD_OLD_POS_DATA_ID:
782 case OLD_PROP_MSG_ID:
783 case OLD_POS_DATA_ID:
786 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
787 << "Unknown message Id received: " << MsgHdr->MsgId );
793 MultiPlayerMap::iterator it = mMultiPlayerMap.begin();
794 while (it != mMultiPlayerMap.end()) {
795 if (it->second->getLastTimestamp() + 10 < stamp) {
796 std::string name = it->first;
797 it->second->setDie(true);
798 mMultiPlayerMap.erase(it);
799 it = mMultiPlayerMap.upper_bound(name);
803 } // FGMultiplayMgr::ProcessData(void)
804 //////////////////////////////////////////////////////////////////////
806 //////////////////////////////////////////////////////////////////////
808 // handle a position message
810 //////////////////////////////////////////////////////////////////////
812 FGMultiplayMgr::ProcessPosMsg(const FGMultiplayMgr::MsgBuf& Msg,
813 const netAddress& SenderAddress, long stamp)
815 const T_MsgHdr* MsgHdr = Msg.msgHdr();
816 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + sizeof(T_PositionMsg)) {
817 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
818 << "Position message received with insufficient data" );
821 const T_PositionMsg* PosMsg = Msg.posMsg();
822 FGExternalMotionData motionInfo;
823 motionInfo.time = XDR_decode_double(PosMsg->time);
824 motionInfo.lag = XDR_decode_double(PosMsg->lag);
825 for (unsigned i = 0; i < 3; ++i)
826 motionInfo.position(i) = XDR_decode_double(PosMsg->position[i]);
828 for (unsigned i = 0; i < 3; ++i)
829 angleAxis(i) = XDR_decode_float(PosMsg->orientation[i]);
830 motionInfo.orientation = SGQuatf::fromAngleAxis(angleAxis);
831 for (unsigned i = 0; i < 3; ++i)
832 motionInfo.linearVel(i) = XDR_decode_float(PosMsg->linearVel[i]);
833 for (unsigned i = 0; i < 3; ++i)
834 motionInfo.angularVel(i) = XDR_decode_float(PosMsg->angularVel[i]);
835 for (unsigned i = 0; i < 3; ++i)
836 motionInfo.linearAccel(i) = XDR_decode_float(PosMsg->linearAccel[i]);
837 for (unsigned i = 0; i < 3; ++i)
838 motionInfo.angularAccel(i) = XDR_decode_float(PosMsg->angularAccel[i]);
841 //cout << "INPUT MESSAGE\n";
843 // There was a bug in 1.9.0 and before: T_PositionMsg was 196 bytes
844 // on 32 bit architectures and 200 bytes on 64 bit, and this
845 // structure is put directly on the wire. By looking at the padding,
846 // we can sort through the mess, mostly:
847 // If padding is 0 (which is not a valid property type), then the
848 // message was produced by a new client or an old 64 bit client that
849 // happened to have 0 on the stack;
850 // Else if the property list starting with the padding word is
851 // well-formed, then the client is probably an old 32 bit client and
852 // we'll go with that;
853 // Else it is an old 64-bit client and properties start after the
855 // There is a chance that we could be fooled by garbage in the
856 // padding looking like a valid property, so verifyProperties() is
857 // strict about the validity of the property values.
858 const xdr_data_t* xdr = Msg.properties();
859 if (PosMsg->pad != 0) {
860 if (verifyProperties(&PosMsg->pad, Msg.propsRecvdEnd()))
862 else if (!verifyProperties(xdr, Msg.propsRecvdEnd()))
865 while (xdr < Msg.propsRecvdEnd()) {
866 FGPropertyData* pData = new FGPropertyData;
867 SGPropertyNode::Type type = SGPropertyNode::UNSPECIFIED;
869 // First element is always the ID
870 pData->id = XDR_decode_uint32(*xdr);
871 //cout << pData->id << " ";
874 // Check the ID actually exists and get the type
875 const IdPropertyList* plist = findProperty(pData->id);
879 pData->type = plist->type;
880 // How we decode the remainder of the property depends on the type
881 switch (pData->type) {
882 case SGPropertyNode::INT:
883 case SGPropertyNode::BOOL:
884 case SGPropertyNode::LONG:
885 pData->int_value = XDR_decode_uint32(*xdr);
887 //cout << pData->int_value << "\n";
889 case SGPropertyNode::FLOAT:
890 case SGPropertyNode::DOUBLE:
891 pData->float_value = XDR_decode_float(*xdr);
893 //cout << pData->float_value << "\n";
895 case SGPropertyNode::STRING:
896 case SGPropertyNode::UNSPECIFIED:
898 // String is complicated. It consists of
899 // The length of the string
901 // Padding to the nearest 4-bytes.
902 uint32_t length = XDR_decode_uint32(*xdr);
904 //cout << length << " ";
905 // Old versions truncated the string but left the length unadjusted.
906 if (length > MAX_TEXT_SIZE)
907 length = MAX_TEXT_SIZE;
908 pData->string_value = new char[length + 1];
909 //cout << " String: ";
910 for (int i = 0; i < length; i++)
912 pData->string_value[i] = (char) XDR_decode_int8(*xdr);
914 //cout << pData->string_value[i];
917 pData->string_value[length] = '\0';
919 // Now handle the padding
920 while ((length % 4) != 0)
931 pData->float_value = XDR_decode_float(*xdr);
932 SG_LOG(SG_NETWORK, SG_ALERT, "Unknown Prop type " << pData->id << " " << pData->type);
937 motionInfo.properties.push_back(pData);
941 // We failed to find the property. We'll try the next packet immediately.
942 SG_LOG(SG_NETWORK, SG_INFO, "FGMultiplayMgr::ProcessPosMsg - "
943 "message from " << MsgHdr->Callsign << " has unknown property id "
948 FGAIMultiplayer* mp = getMultiplayer(MsgHdr->Callsign);
950 mp = addMultiplayer(MsgHdr->Callsign, PosMsg->Model);
951 mp->addMotionInfo(motionInfo, stamp);
952 } // FGMultiplayMgr::ProcessPosMsg()
953 //////////////////////////////////////////////////////////////////////
955 //////////////////////////////////////////////////////////////////////
957 // handle a chat message
958 // FIXME: display chat message withi flightgear
960 //////////////////////////////////////////////////////////////////////
962 FGMultiplayMgr::ProcessChatMsg(const MsgBuf& Msg,
963 const netAddress& SenderAddress)
965 const T_MsgHdr* MsgHdr = Msg.msgHdr();
966 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + 1) {
967 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
968 << "Chat message received with insufficient data" );
972 char *chatStr = new char[MsgHdr->MsgLen - sizeof(T_MsgHdr)];
974 (reinterpret_cast<const T_ChatMsg *>(Msg.Msg + sizeof(T_MsgHdr)))
976 MsgHdr->MsgLen - sizeof(T_MsgHdr));
977 chatStr[MsgHdr->MsgLen - sizeof(T_MsgHdr) - 1] = '\0';
979 const T_ChatMsg* ChatMsg
980 = reinterpret_cast<const T_ChatMsg *>(Msg.Msg + sizeof(T_MsgHdr));
981 SG_LOG (SG_NETWORK, SG_WARN, "Chat [" << MsgHdr->Callsign << "]"
985 } // FGMultiplayMgr::ProcessChatMsg ()
986 //////////////////////////////////////////////////////////////////////
989 FGMultiplayMgr::FillMsgHdr(T_MsgHdr *MsgHdr, int MsgId, unsigned _len)
994 len = sizeof(T_MsgHdr) + sizeof(T_ChatMsg);
1000 len = sizeof(T_MsgHdr);
1003 MsgHdr->Magic = XDR_encode_uint32(MSG_MAGIC);
1004 MsgHdr->Version = XDR_encode_uint32(PROTO_VER);
1005 MsgHdr->MsgId = XDR_encode_uint32(MsgId);
1006 MsgHdr->MsgLen = XDR_encode_uint32(len);
1007 MsgHdr->ReplyAddress = 0; // Are obsolete, keep them for the server for
1008 MsgHdr->ReplyPort = 0; // now
1009 strncpy(MsgHdr->Callsign, mCallsign.c_str(), MAX_CALLSIGN_LEN);
1010 MsgHdr->Callsign[MAX_CALLSIGN_LEN - 1] = '\0';
1014 FGMultiplayMgr::addMultiplayer(const std::string& callsign,
1015 const std::string& modelName)
1017 if (0 < mMultiPlayerMap.count(callsign))
1018 return mMultiPlayerMap[callsign].get();
1020 FGAIMultiplayer* mp = new FGAIMultiplayer;
1021 mp->setPath(modelName.c_str());
1022 mp->setCallSign(callsign);
1023 mMultiPlayerMap[callsign] = mp;
1025 FGAIManager *aiMgr = (FGAIManager*)globals->get_subsystem("ai_model");
1029 /// FIXME: that must follow the attach ATM ...
1030 for (unsigned i = 0; i < numProperties; ++i)
1031 mp->addPropertyId(sIdPropertyList[i].id, sIdPropertyList[i].name);
1038 FGMultiplayMgr::getMultiplayer(const std::string& callsign)
1040 if (0 < mMultiPlayerMap.count(callsign))
1041 return mMultiPlayerMap[callsign].get();