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 //////////////////////////////////////////////////////////////////////
36 #include <osg/Math> // isNaN
37 #include <plib/netSocket.h>
39 #include <simgear/misc/stdint.hxx>
40 #include <simgear/timing/timestamp.hxx>
41 #include <simgear/debug/logstream.hxx>
42 #include <simgear/props/props.hxx>
44 #include <AIModel/AIManager.hxx>
45 #include <Main/fg_props.hxx>
46 #include "multiplaymgr.hxx"
47 #include "mpmessages.hxx"
51 #define MAX_PACKET_SIZE 1200
52 #define MAX_TEXT_SIZE 128
54 // These constants are provided so that the ident
55 // command can list file versions
56 const char sMULTIPLAYMGR_BID[] = "$Id$";
57 const char sMULTIPLAYMGR_HID[] = MULTIPLAYTXMGR_HID;
59 // A static map of protocol property id values to property paths,
60 // This should be extendable dynamically for every specific aircraft ...
61 // For now only that static list
62 FGMultiplayMgr::IdPropertyList
63 const FGMultiplayMgr::sIdPropertyList[] = {
64 {100, "surface-positions/left-aileron-pos-norm", SGPropertyNode::FLOAT},
65 {101, "surface-positions/right-aileron-pos-norm", SGPropertyNode::FLOAT},
66 {102, "surface-positions/elevator-pos-norm", SGPropertyNode::FLOAT},
67 {103, "surface-positions/rudder-pos-norm", SGPropertyNode::FLOAT},
68 {104, "surface-positions/flap-pos-norm", SGPropertyNode::FLOAT},
69 {105, "surface-positions/speedbrake-pos-norm", SGPropertyNode::FLOAT},
70 {106, "gear/tailhook/position-norm", SGPropertyNode::FLOAT},
71 {107, "gear/launchbar/position-norm", SGPropertyNode::FLOAT},
72 {108, "gear/launchbar/state", SGPropertyNode::STRING},
73 {109, "gear/launchbar/holdback-position-norm", SGPropertyNode::FLOAT},
74 {110, "canopy/position-norm", SGPropertyNode::FLOAT},
75 {111, "surface-positions/wing-pos-norm", SGPropertyNode::FLOAT},
76 {112, "surface-positions/wing-fold-pos-norm", SGPropertyNode::FLOAT},
78 {200, "gear/gear[0]/compression-norm", SGPropertyNode::FLOAT},
79 {201, "gear/gear[0]/position-norm", SGPropertyNode::FLOAT},
80 {210, "gear/gear[1]/compression-norm", SGPropertyNode::FLOAT},
81 {211, "gear/gear[1]/position-norm", SGPropertyNode::FLOAT},
82 {220, "gear/gear[2]/compression-norm", SGPropertyNode::FLOAT},
83 {221, "gear/gear[2]/position-norm", SGPropertyNode::FLOAT},
84 {230, "gear/gear[3]/compression-norm", SGPropertyNode::FLOAT},
85 {231, "gear/gear[3]/position-norm", SGPropertyNode::FLOAT},
86 {240, "gear/gear[4]/compression-norm", SGPropertyNode::FLOAT},
87 {241, "gear/gear[4]/position-norm", SGPropertyNode::FLOAT},
89 {300, "engines/engine[0]/n1", SGPropertyNode::FLOAT},
90 {301, "engines/engine[0]/n2", SGPropertyNode::FLOAT},
91 {302, "engines/engine[0]/rpm", SGPropertyNode::FLOAT},
92 {310, "engines/engine[1]/n1", SGPropertyNode::FLOAT},
93 {311, "engines/engine[1]/n2", SGPropertyNode::FLOAT},
94 {312, "engines/engine[1]/rpm", SGPropertyNode::FLOAT},
95 {320, "engines/engine[2]/n1", SGPropertyNode::FLOAT},
96 {321, "engines/engine[2]/n2", SGPropertyNode::FLOAT},
97 {322, "engines/engine[2]/rpm", SGPropertyNode::FLOAT},
98 {330, "engines/engine[3]/n1", SGPropertyNode::FLOAT},
99 {331, "engines/engine[3]/n2", SGPropertyNode::FLOAT},
100 {332, "engines/engine[3]/rpm", SGPropertyNode::FLOAT},
101 {340, "engines/engine[4]/n1", SGPropertyNode::FLOAT},
102 {341, "engines/engine[4]/n2", SGPropertyNode::FLOAT},
103 {342, "engines/engine[4]/rpm", SGPropertyNode::FLOAT},
104 {350, "engines/engine[5]/n1", SGPropertyNode::FLOAT},
105 {351, "engines/engine[5]/n2", SGPropertyNode::FLOAT},
106 {352, "engines/engine[5]/rpm", SGPropertyNode::FLOAT},
107 {360, "engines/engine[6]/n1", SGPropertyNode::FLOAT},
108 {361, "engines/engine[6]/n2", SGPropertyNode::FLOAT},
109 {362, "engines/engine[6]/rpm", SGPropertyNode::FLOAT},
110 {370, "engines/engine[7]/n1", SGPropertyNode::FLOAT},
111 {371, "engines/engine[7]/n2", SGPropertyNode::FLOAT},
112 {372, "engines/engine[7]/rpm", SGPropertyNode::FLOAT},
113 {380, "engines/engine[8]/n1", SGPropertyNode::FLOAT},
114 {381, "engines/engine[8]/n2", SGPropertyNode::FLOAT},
115 {382, "engines/engine[8]/rpm", SGPropertyNode::FLOAT},
116 {390, "engines/engine[9]/n1", SGPropertyNode::FLOAT},
117 {391, "engines/engine[9]/n2", SGPropertyNode::FLOAT},
118 {392, "engines/engine[9]/rpm", SGPropertyNode::FLOAT},
120 {800, "rotors/main/rpm", SGPropertyNode::FLOAT},
121 {801, "rotors/tail/rpm", SGPropertyNode::FLOAT},
122 {810, "rotors/main/blade[0]/position-deg", SGPropertyNode::FLOAT},
123 {811, "rotors/main/blade[1]/position-deg", SGPropertyNode::FLOAT},
124 {812, "rotors/main/blade[2]/position-deg", SGPropertyNode::FLOAT},
125 {813, "rotors/main/blade[3]/position-deg", SGPropertyNode::FLOAT},
126 {820, "rotors/main/blade[0]/flap-deg", SGPropertyNode::FLOAT},
127 {821, "rotors/main/blade[1]/flap-deg", SGPropertyNode::FLOAT},
128 {822, "rotors/main/blade[2]/flap-deg", SGPropertyNode::FLOAT},
129 {823, "rotors/main/blade[3]/flap-deg", SGPropertyNode::FLOAT},
130 {830, "rotors/tail/blade[0]/position-deg", SGPropertyNode::FLOAT},
131 {831, "rotors/tail/blade[1]/position-deg", SGPropertyNode::FLOAT},
133 {900, "sim/hitches/aerotow/tow/length", SGPropertyNode::FLOAT},
134 {901, "sim/hitches/aerotow/tow/elastic-constant", SGPropertyNode::FLOAT},
135 {902, "sim/hitches/aerotow/tow/weight-per-m-kg-m", SGPropertyNode::FLOAT},
136 {903, "sim/hitches/aerotow/tow/dist", SGPropertyNode::FLOAT},
137 {904, "sim/hitches/aerotow/tow/connected-to-property-node", SGPropertyNode::BOOL},
138 {905, "sim/hitches/aerotow/tow/connected-to-ai-or-mp-callsign", SGPropertyNode::STRING},
139 {906, "sim/hitches/aerotow/tow/brake-force", SGPropertyNode::FLOAT},
140 {907, "sim/hitches/aerotow/tow/end-force-x", SGPropertyNode::FLOAT},
141 {908, "sim/hitches/aerotow/tow/end-force-y", SGPropertyNode::FLOAT},
142 {909, "sim/hitches/aerotow/tow/end-force-z", SGPropertyNode::FLOAT},
143 {930, "sim/hitches/aerotow/is-slave", SGPropertyNode::BOOL},
144 {931, "sim/hitches/aerotow/speed-in-tow-direction", SGPropertyNode::FLOAT},
145 {932, "sim/hitches/aerotow/open", SGPropertyNode::BOOL},
146 {933, "sim/hitches/aerotow/local-pos-x", SGPropertyNode::FLOAT},
147 {934, "sim/hitches/aerotow/local-pos-y", SGPropertyNode::FLOAT},
148 {935, "sim/hitches/aerotow/local-pos-z", SGPropertyNode::FLOAT},
150 {1001, "controls/flight/slats", SGPropertyNode::FLOAT},
151 {1002, "controls/flight/speedbrake", SGPropertyNode::FLOAT},
152 {1003, "controls/flight/spoilers", SGPropertyNode::FLOAT},
153 {1004, "controls/gear/gear-down", SGPropertyNode::FLOAT},
154 {1005, "controls/lighting/nav-lights", SGPropertyNode::FLOAT},
155 {1006, "controls/armament/station[0]/jettison-all", SGPropertyNode::BOOL},
157 {1100, "sim/model/variant", SGPropertyNode::INT},
158 {1101, "sim/model/livery/file", SGPropertyNode::STRING},
160 {1200, "environment/wildfire/data", SGPropertyNode::STRING},
162 {10001, "sim/multiplay/transmission-freq-hz", SGPropertyNode::STRING},
163 {10002, "sim/multiplay/chat", SGPropertyNode::STRING},
165 {10100, "sim/multiplay/generic/string[0]", SGPropertyNode::STRING},
166 {10101, "sim/multiplay/generic/string[1]", SGPropertyNode::STRING},
167 {10102, "sim/multiplay/generic/string[2]", SGPropertyNode::STRING},
168 {10103, "sim/multiplay/generic/string[3]", SGPropertyNode::STRING},
169 {10104, "sim/multiplay/generic/string[4]", SGPropertyNode::STRING},
170 {10105, "sim/multiplay/generic/string[5]", SGPropertyNode::STRING},
171 {10106, "sim/multiplay/generic/string[6]", SGPropertyNode::STRING},
172 {10107, "sim/multiplay/generic/string[7]", SGPropertyNode::STRING},
173 {10108, "sim/multiplay/generic/string[8]", SGPropertyNode::STRING},
174 {10109, "sim/multiplay/generic/string[9]", SGPropertyNode::STRING},
175 {10110, "sim/multiplay/generic/string[10]", SGPropertyNode::STRING},
176 {10111, "sim/multiplay/generic/string[11]", SGPropertyNode::STRING},
177 {10112, "sim/multiplay/generic/string[12]", SGPropertyNode::STRING},
178 {10113, "sim/multiplay/generic/string[13]", SGPropertyNode::STRING},
179 {10114, "sim/multiplay/generic/string[14]", SGPropertyNode::STRING},
180 {10115, "sim/multiplay/generic/string[15]", SGPropertyNode::STRING},
181 {10116, "sim/multiplay/generic/string[16]", SGPropertyNode::STRING},
182 {10117, "sim/multiplay/generic/string[17]", SGPropertyNode::STRING},
183 {10118, "sim/multiplay/generic/string[18]", SGPropertyNode::STRING},
184 {10119, "sim/multiplay/generic/string[19]", SGPropertyNode::STRING},
186 {10200, "sim/multiplay/generic/float[0]", SGPropertyNode::FLOAT},
187 {10201, "sim/multiplay/generic/float[1]", SGPropertyNode::FLOAT},
188 {10202, "sim/multiplay/generic/float[2]", SGPropertyNode::FLOAT},
189 {10203, "sim/multiplay/generic/float[3]", SGPropertyNode::FLOAT},
190 {10204, "sim/multiplay/generic/float[4]", SGPropertyNode::FLOAT},
191 {10205, "sim/multiplay/generic/float[5]", SGPropertyNode::FLOAT},
192 {10206, "sim/multiplay/generic/float[6]", SGPropertyNode::FLOAT},
193 {10207, "sim/multiplay/generic/float[7]", SGPropertyNode::FLOAT},
194 {10208, "sim/multiplay/generic/float[8]", SGPropertyNode::FLOAT},
195 {10209, "sim/multiplay/generic/float[9]", SGPropertyNode::FLOAT},
196 {10210, "sim/multiplay/generic/float[10]", SGPropertyNode::FLOAT},
197 {10211, "sim/multiplay/generic/float[11]", SGPropertyNode::FLOAT},
198 {10212, "sim/multiplay/generic/float[12]", SGPropertyNode::FLOAT},
199 {10213, "sim/multiplay/generic/float[13]", SGPropertyNode::FLOAT},
200 {10214, "sim/multiplay/generic/float[14]", SGPropertyNode::FLOAT},
201 {10215, "sim/multiplay/generic/float[15]", SGPropertyNode::FLOAT},
202 {10216, "sim/multiplay/generic/float[16]", SGPropertyNode::FLOAT},
203 {10217, "sim/multiplay/generic/float[17]", SGPropertyNode::FLOAT},
204 {10218, "sim/multiplay/generic/float[18]", SGPropertyNode::FLOAT},
205 {10219, "sim/multiplay/generic/float[19]", SGPropertyNode::FLOAT},
207 {10300, "sim/multiplay/generic/int[0]", SGPropertyNode::INT},
208 {10301, "sim/multiplay/generic/int[1]", SGPropertyNode::INT},
209 {10302, "sim/multiplay/generic/int[2]", SGPropertyNode::INT},
210 {10303, "sim/multiplay/generic/int[3]", SGPropertyNode::INT},
211 {10304, "sim/multiplay/generic/int[4]", SGPropertyNode::INT},
212 {10305, "sim/multiplay/generic/int[5]", SGPropertyNode::INT},
213 {10306, "sim/multiplay/generic/int[6]", SGPropertyNode::INT},
214 {10307, "sim/multiplay/generic/int[7]", SGPropertyNode::INT},
215 {10308, "sim/multiplay/generic/int[8]", SGPropertyNode::INT},
216 {10309, "sim/multiplay/generic/int[9]", SGPropertyNode::INT},
217 {10310, "sim/multiplay/generic/int[10]", SGPropertyNode::INT},
218 {10311, "sim/multiplay/generic/int[11]", SGPropertyNode::INT},
219 {10312, "sim/multiplay/generic/int[12]", SGPropertyNode::INT},
220 {10313, "sim/multiplay/generic/int[13]", SGPropertyNode::INT},
221 {10314, "sim/multiplay/generic/int[14]", SGPropertyNode::INT},
222 {10315, "sim/multiplay/generic/int[15]", SGPropertyNode::INT},
223 {10316, "sim/multiplay/generic/int[16]", SGPropertyNode::INT},
224 {10317, "sim/multiplay/generic/int[17]", SGPropertyNode::INT},
225 {10318, "sim/multiplay/generic/int[18]", SGPropertyNode::INT},
226 {10319, "sim/multiplay/generic/int[19]", SGPropertyNode::INT},
230 FGMultiplayMgr::numProperties = (sizeof(FGMultiplayMgr::sIdPropertyList)
231 / sizeof(FGMultiplayMgr::sIdPropertyList[0]));
233 // Look up a property ID using binary search.
236 struct ComparePropertyId
238 bool operator()(const FGMultiplayMgr::IdPropertyList& lhs,
239 const FGMultiplayMgr::IdPropertyList& rhs)
241 return lhs.id < rhs.id;
243 bool operator()(const FGMultiplayMgr::IdPropertyList& lhs,
248 bool operator()(unsigned id,
249 const FGMultiplayMgr::IdPropertyList& rhs)
256 const FGMultiplayMgr::IdPropertyList* FGMultiplayMgr::findProperty(unsigned id)
258 std::pair<const IdPropertyList*, const IdPropertyList*> result
259 = std::equal_range(sIdPropertyList, sIdPropertyList + numProperties, id,
260 ComparePropertyId());
261 if (result.first == result.second) {
270 bool verifyProperties(const xdr_data_t* data, const xdr_data_t* end)
272 const xdr_data_t* xdr = data;
274 unsigned id = XDR_decode_uint32(*xdr);
275 const FGMultiplayMgr::IdPropertyList* plist
276 = FGMultiplayMgr::findProperty(id);
280 // How we decode the remainder of the property depends on the type
281 switch (plist->type) {
282 case SGPropertyNode::INT:
283 case SGPropertyNode::BOOL:
284 case SGPropertyNode::LONG:
287 case SGPropertyNode::FLOAT:
288 case SGPropertyNode::DOUBLE:
290 float val = XDR_decode_float(*xdr);
296 case SGPropertyNode::STRING:
297 case SGPropertyNode::UNSPECIFIED:
299 // String is complicated. It consists of
300 // The length of the string
302 // Padding to the nearest 4-bytes.
303 // XXX Yes, each byte is padded out to a word! Too late
305 uint32_t length = XDR_decode_uint32(*xdr);
307 if ((length > 0) && (length < MAX_TEXT_SIZE)) {
309 // Now handle the padding
310 while ((length % 4) != 0)
317 // The string appears to be invalid; bail.
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 //////////////////////////////////////////////////////////////////////
454 FGMultiplayMgr::SendMyPosition(const FGExternalMotionData& motionInfo)
456 if ((! mInitialised) || (! mHaveServer))
459 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::SendMyPosition - no server");
463 T_PositionMsg PosMsg;
465 memset(&PosMsg, 0, sizeof(PosMsg));
466 strncpy(PosMsg.Model, fgGetString("/sim/model/path"), MAX_MODEL_NAME_LEN);
467 PosMsg.Model[MAX_MODEL_NAME_LEN - 1] = '\0';
469 PosMsg.time = XDR_encode_double (motionInfo.time);
470 PosMsg.lag = XDR_encode_double (motionInfo.lag);
471 for (unsigned i = 0 ; i < 3; ++i)
472 PosMsg.position[i] = XDR_encode_double (motionInfo.position(i));
474 motionInfo.orientation.getAngleAxis(angleAxis);
475 for (unsigned i = 0 ; i < 3; ++i)
476 PosMsg.orientation[i] = XDR_encode_float (angleAxis(i));
477 for (unsigned i = 0 ; i < 3; ++i)
478 PosMsg.linearVel[i] = XDR_encode_float (motionInfo.linearVel(i));
479 for (unsigned i = 0 ; i < 3; ++i)
480 PosMsg.angularVel[i] = XDR_encode_float (motionInfo.angularVel(i));
481 for (unsigned i = 0 ; i < 3; ++i)
482 PosMsg.linearAccel[i] = XDR_encode_float (motionInfo.linearAccel(i));
483 for (unsigned i = 0 ; i < 3; ++i)
484 PosMsg.angularAccel[i] = XDR_encode_float (motionInfo.angularAccel(i));
486 char Msg[MAX_PACKET_SIZE];
487 memcpy(Msg + sizeof(T_MsgHdr), &PosMsg, sizeof(T_PositionMsg));
489 char* ptr = Msg + sizeof(T_MsgHdr) + sizeof(T_PositionMsg);
490 std::vector<FGPropertyData*>::const_iterator it;
491 it = motionInfo.properties.begin();
492 //cout << "OUTPUT PROPERTIES\n";
493 while (it != motionInfo.properties.end()
494 && ptr + 2 * sizeof(xdr_data_t) < (Msg + MAX_PACKET_SIZE)) {
496 // First elements is the ID
497 xdr_data_t xdr = XDR_encode_uint32((*it)->id);
498 memcpy(ptr, &xdr, sizeof(xdr_data_t));
499 ptr += sizeof(xdr_data_t);
501 // The actual data representation depends on the type
502 switch ((*it)->type) {
503 case SGPropertyNode::INT:
504 case SGPropertyNode::BOOL:
505 case SGPropertyNode::LONG:
506 xdr = XDR_encode_uint32((*it)->int_value);
507 memcpy(ptr, &xdr, sizeof(xdr_data_t));
508 ptr += sizeof(xdr_data_t);
509 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->int_value << "\n";
511 case SGPropertyNode::FLOAT:
512 case SGPropertyNode::DOUBLE:
513 xdr = XDR_encode_float((*it)->float_value);;
514 memcpy(ptr, &xdr, sizeof(xdr_data_t));
515 ptr += sizeof(xdr_data_t);
516 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
518 case SGPropertyNode::STRING:
519 case SGPropertyNode::UNSPECIFIED:
521 // String is complicated. It consists of
522 // The length of the string
524 // Padding to the nearest 4-bytes.
525 const char* lcharptr = (*it)->string_value;
530 ////cout << "String length: " << strlen(lcharptr) << "\n";
531 uint32_t len = strlen(lcharptr);
532 // XXX This should not be using 4 bytes per character!
533 if (ptr + (1 + len + (4 - len % 4)) * sizeof (xdr_data_t)
534 >= (Msg + MAX_PACKET_SIZE))
536 //cout << "String length unint32: " << len << "\n";
537 xdr = XDR_encode_uint32(len);
538 memcpy(ptr, &xdr, sizeof(xdr_data_t));
539 ptr += sizeof(xdr_data_t);
544 // Now the text itself
545 // XXX This should not be using 4 bytes per character!
547 while ((*lcharptr != '\0') && (lcount < MAX_TEXT_SIZE))
549 xdr = XDR_encode_int8(*lcharptr);
550 memcpy(ptr, &xdr, sizeof(xdr_data_t));
551 ptr += sizeof(xdr_data_t);
556 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " " << len << " " << (*it)->string_value;
558 // Now pad if required
559 while ((lcount % 4) != 0)
561 xdr = XDR_encode_int8(0);
562 memcpy(ptr, &xdr, sizeof(xdr_data_t));
563 ptr += sizeof(xdr_data_t);
574 xdr = XDR_encode_uint32(0);
575 memcpy(ptr, &xdr, sizeof(xdr_data_t));
576 ptr += sizeof(xdr_data_t);
577 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " 0\n";
584 //cout << " Unknown Type: " << (*it)->type << "\n";
585 xdr = XDR_encode_float((*it)->float_value);;
586 memcpy(ptr, &xdr, sizeof(xdr_data_t));
587 ptr += sizeof(xdr_data_t);
588 //cout << "Prop:" << (*it)->id << " " << (*it)->type << " "<< (*it)->float_value << "\n";
597 FillMsgHdr(&MsgHdr, POS_DATA_ID, ptr - Msg);
598 memcpy(Msg, &MsgHdr, sizeof(T_MsgHdr));
600 mSocket->sendto(Msg, ptr - Msg, 0, &mServer);
601 SG_LOG(SG_NETWORK, SG_DEBUG, "FGMultiplayMgr::SendMyPosition");
602 } // FGMultiplayMgr::SendMyPosition()
603 //////////////////////////////////////////////////////////////////////
605 //////////////////////////////////////////////////////////////////////
607 // Name: SendTextMessage
608 // Description: Sends a message to the player. The message must
609 // contain a valid and correctly filled out header and optional
612 //////////////////////////////////////////////////////////////////////
614 FGMultiplayMgr::SendTextMessage(const string &MsgText)
616 if (!mInitialised || !mHaveServer)
620 FillMsgHdr(&MsgHdr, CHAT_MSG_ID);
621 //////////////////////////////////////////////////
622 // Divide the text string into blocks that fit
623 // in the message and send the blocks.
624 //////////////////////////////////////////////////
625 unsigned iNextBlockPosition = 0;
628 char Msg[sizeof(T_MsgHdr) + sizeof(T_ChatMsg)];
629 while (iNextBlockPosition < MsgText.length()) {
630 strncpy (ChatMsg.Text,
631 MsgText.substr(iNextBlockPosition, MAX_CHAT_MSG_LEN - 1).c_str(),
633 ChatMsg.Text[MAX_CHAT_MSG_LEN - 1] = '\0';
634 memcpy (Msg, &MsgHdr, sizeof(T_MsgHdr));
635 memcpy (Msg + sizeof(T_MsgHdr), &ChatMsg, sizeof(T_ChatMsg));
636 mSocket->sendto (Msg, sizeof(T_MsgHdr) + sizeof(T_ChatMsg), 0, &mServer);
637 iNextBlockPosition += MAX_CHAT_MSG_LEN - 1;
642 } // FGMultiplayMgr::SendTextMessage ()
643 //////////////////////////////////////////////////////////////////////
645 //////////////////////////////////////////////////////////////////////
648 // Description: Processes data waiting at the receive socket. The
649 // processing ends when there is no more data at the socket.
651 //////////////////////////////////////////////////////////////////////
653 FGMultiplayMgr::Update(void)
659 SGTimeStamp timestamper;
661 long stamp = timestamper.get_seconds();
663 //////////////////////////////////////////////////
664 // Read the receive socket and process any data
665 //////////////////////////////////////////////////
668 char Msg[MAX_PACKET_SIZE];
669 //////////////////////////////////////////////////
670 // Although the recv call asks for
671 // MAX_PACKET_SIZE of data, the number of bytes
672 // returned will only be that of the next
673 // packet waiting to be processed.
674 //////////////////////////////////////////////////
675 netAddress SenderAddress;
676 bytes = mSocket->recvfrom(Msg, sizeof(Msg), 0, &SenderAddress);
677 //////////////////////////////////////////////////
679 //////////////////////////////////////////////////
681 if (errno != EAGAIN && errno != 0) // MSVC output "NoError" otherwise
682 perror("FGMultiplayMgr::MP_ProcessData");
685 if (bytes <= sizeof(T_MsgHdr)) {
686 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
687 << "received message with insufficient data" );
690 //////////////////////////////////////////////////
692 //////////////////////////////////////////////////
693 T_MsgHdr* MsgHdr = (T_MsgHdr *)Msg;
694 MsgHdr->Magic = XDR_decode_uint32 (MsgHdr->Magic);
695 MsgHdr->Version = XDR_decode_uint32 (MsgHdr->Version);
696 MsgHdr->MsgId = XDR_decode_uint32 (MsgHdr->MsgId);
697 MsgHdr->MsgLen = XDR_decode_uint32 (MsgHdr->MsgLen);
698 MsgHdr->ReplyPort = XDR_decode_uint32 (MsgHdr->ReplyPort);
699 if (MsgHdr->Magic != MSG_MAGIC) {
700 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
701 << "message has invalid magic number!" );
704 if (MsgHdr->Version != PROTO_VER) {
705 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
706 << "message has invalid protocoll number!" );
709 if (MsgHdr->MsgLen != bytes) {
710 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
711 << "message has invalid length!" );
714 //////////////////////////////////////////////////
716 //////////////////////////////////////////////////
717 switch (MsgHdr->MsgId) {
719 ProcessChatMsg(Msg, SenderAddress);
722 ProcessPosMsg(Msg, SenderAddress, bytes, stamp);
724 case UNUSABLE_POS_DATA_ID:
725 case OLD_OLD_POS_DATA_ID:
726 case OLD_PROP_MSG_ID:
727 case OLD_POS_DATA_ID:
730 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
731 << "Unknown message Id received: " << MsgHdr->MsgId );
737 MultiPlayerMap::iterator it = mMultiPlayerMap.begin();
738 while (it != mMultiPlayerMap.end()) {
739 if (it->second->getLastTimestamp() + 10 < stamp) {
740 std::string name = it->first;
741 it->second->setDie(true);
742 mMultiPlayerMap.erase(it);
743 it = mMultiPlayerMap.upper_bound(name);
747 } // FGMultiplayMgr::ProcessData(void)
748 //////////////////////////////////////////////////////////////////////
750 //////////////////////////////////////////////////////////////////////
752 // handle a position message
754 //////////////////////////////////////////////////////////////////////
756 FGMultiplayMgr::ProcessPosMsg(const char *Msg, netAddress & SenderAddress,
757 unsigned len, long stamp)
759 T_MsgHdr* MsgHdr = (T_MsgHdr *)Msg;
760 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + sizeof(T_PositionMsg)) {
761 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
762 << "Position message received with insufficient data" );
765 T_PositionMsg* PosMsg = (T_PositionMsg *)(Msg + sizeof(T_MsgHdr));
766 FGExternalMotionData motionInfo;
767 motionInfo.time = XDR_decode_double(PosMsg->time);
768 motionInfo.lag = XDR_decode_double(PosMsg->lag);
769 for (unsigned i = 0; i < 3; ++i)
770 motionInfo.position(i) = XDR_decode_double(PosMsg->position[i]);
772 for (unsigned i = 0; i < 3; ++i)
773 angleAxis(i) = XDR_decode_float(PosMsg->orientation[i]);
774 motionInfo.orientation = SGQuatf::fromAngleAxis(angleAxis);
775 for (unsigned i = 0; i < 3; ++i)
776 motionInfo.linearVel(i) = XDR_decode_float(PosMsg->linearVel[i]);
777 for (unsigned i = 0; i < 3; ++i)
778 motionInfo.angularVel(i) = XDR_decode_float(PosMsg->angularVel[i]);
779 for (unsigned i = 0; i < 3; ++i)
780 motionInfo.linearAccel(i) = XDR_decode_float(PosMsg->linearAccel[i]);
781 for (unsigned i = 0; i < 3; ++i)
782 motionInfo.angularAccel(i) = XDR_decode_float(PosMsg->angularAccel[i]);
785 //cout << "INPUT MESSAGE\n";
786 xdr_data_t* xdr = (xdr_data_t*)
787 (Msg + sizeof(T_MsgHdr) + sizeof(T_PositionMsg));
788 // There was a bug in 1.9.0 and before: T_PositionMsg was 196 bytes
789 // on 32 bit architectures and 200 bytes on 64 bit, and this
790 // structure is put directly on the wire. By looking at the padding,
791 // we can sort through the mess, mostly:
792 // If padding is 0 (which is not a valid property type), then the
793 // message was produced by a new client or an old 64 bit client that
794 // happened to have 0 on the stack;
795 // Else if the property list starting with the padding word is
796 // well-formed, then the client is probably an old 32 bit client and
797 // we'll go with that;
798 // Else it is an old 64-bit client and properties start after the
800 // There is a chance that we could be fooled by garbage in the
801 // padding looking like a valid property, so verifyProperties() is
802 // strict about the validity of the property values.
803 if (PosMsg->pad != 0) {
804 if (verifyProperties(&PosMsg->pad,
805 reinterpret_cast<const xdr_data_t*>(Msg + len)))
807 else if (!verifyProperties(xdr,
808 reinterpret_cast<const xdr_data_t*>(Msg + len)))
811 while ((char*)xdr < Msg + len) {
812 FGPropertyData* pData = new FGPropertyData;
813 SGPropertyNode::Type type = SGPropertyNode::UNSPECIFIED;
815 // First element is always the ID
816 pData->id = XDR_decode_uint32(*xdr);
817 //cout << pData->id << " ";
820 // Check the ID actually exists and get the type
821 const IdPropertyList* plist = findProperty(pData->id);
825 pData->type = plist->type;
826 // How we decode the remainder of the property depends on the type
827 switch (pData->type) {
828 case SGPropertyNode::INT:
829 case SGPropertyNode::BOOL:
830 case SGPropertyNode::LONG:
831 pData->int_value = XDR_decode_uint32(*xdr);
833 //cout << pData->int_value << "\n";
835 case SGPropertyNode::FLOAT:
836 case SGPropertyNode::DOUBLE:
837 pData->float_value = XDR_decode_float(*xdr);
839 //cout << pData->float_value << "\n";
841 case SGPropertyNode::STRING:
842 case SGPropertyNode::UNSPECIFIED:
844 // String is complicated. It consists of
845 // The length of the string
847 // Padding to the nearest 4-bytes.
848 uint32_t length = XDR_decode_uint32(*xdr);
850 //cout << length << " ";
852 if ((length > 0) && (length < MAX_TEXT_SIZE))
854 pData->string_value = new char[length + 1];
855 //cout << " String: ";
857 for (int i = 0; i < length; i++)
859 pData->string_value[i] = (char) XDR_decode_int8(*xdr);
861 //cout << pData->string_value[i];
864 pData->string_value[length] = '\0';
866 // Now handle the padding
867 while ((length % 4) != 0)
876 pData->string_value = new char[1];
877 pData->string_value[0] = '\0';
885 pData->float_value = XDR_decode_float(*xdr);
886 cerr << "Unknown Prop type " << pData->id << " " << pData->type << "\n";
891 motionInfo.properties.push_back(pData);
895 // We failed to find the property. We'll try the next packet immediately.
896 SG_LOG(SG_NETWORK, SG_WARN, "FGMultiplayMgr::ProcessPosMsg - "
897 << "found unknown property id" << pData->id);
901 FGAIMultiplayer* mp = getMultiplayer(MsgHdr->Callsign);
903 mp = addMultiplayer(MsgHdr->Callsign, PosMsg->Model);
904 mp->addMotionInfo(motionInfo, stamp);
905 } // FGMultiplayMgr::ProcessPosMsg()
906 //////////////////////////////////////////////////////////////////////
908 //////////////////////////////////////////////////////////////////////
910 // handle a chat message
911 // FIXME: display chat message withi flightgear
913 //////////////////////////////////////////////////////////////////////
915 FGMultiplayMgr::ProcessChatMsg(const char *Msg, netAddress& SenderAddress)
917 T_MsgHdr* MsgHdr = (T_MsgHdr *)Msg;
918 if (MsgHdr->MsgLen < sizeof(T_MsgHdr) + 1) {
919 SG_LOG( SG_NETWORK, SG_ALERT, "FGMultiplayMgr::MP_ProcessData - "
920 << "Chat message received with insufficient data" );
924 char *MsgBuf = new char[MsgHdr->MsgLen - sizeof(T_MsgHdr)];
925 strncpy(MsgBuf, ((T_ChatMsg *)(Msg + sizeof(T_MsgHdr)))->Text,
926 MsgHdr->MsgLen - sizeof(T_MsgHdr));
927 MsgBuf[MsgHdr->MsgLen - sizeof(T_MsgHdr) - 1] = '\0';
929 T_ChatMsg* ChatMsg = (T_ChatMsg *)(Msg + sizeof(T_MsgHdr));
930 SG_LOG (SG_NETWORK, SG_ALERT, "Chat [" << MsgHdr->Callsign << "]"
934 } // FGMultiplayMgr::ProcessChatMsg ()
935 //////////////////////////////////////////////////////////////////////
938 FGMultiplayMgr::FillMsgHdr(T_MsgHdr *MsgHdr, int MsgId, unsigned _len)
943 len = sizeof(T_MsgHdr) + sizeof(T_ChatMsg);
949 len = sizeof(T_MsgHdr);
952 MsgHdr->Magic = XDR_encode_uint32(MSG_MAGIC);
953 MsgHdr->Version = XDR_encode_uint32(PROTO_VER);
954 MsgHdr->MsgId = XDR_encode_uint32(MsgId);
955 MsgHdr->MsgLen = XDR_encode_uint32(len);
956 MsgHdr->ReplyAddress = 0; // Are obsolete, keep them for the server for
957 MsgHdr->ReplyPort = 0; // now
958 strncpy(MsgHdr->Callsign, mCallsign.c_str(), MAX_CALLSIGN_LEN);
959 MsgHdr->Callsign[MAX_CALLSIGN_LEN - 1] = '\0';
963 FGMultiplayMgr::addMultiplayer(const std::string& callsign,
964 const std::string& modelName)
966 if (0 < mMultiPlayerMap.count(callsign))
967 return mMultiPlayerMap[callsign].get();
969 FGAIMultiplayer* mp = new FGAIMultiplayer;
970 mp->setPath(modelName.c_str());
971 mp->setCallSign(callsign);
972 mMultiPlayerMap[callsign] = mp;
974 FGAIManager *aiMgr = (FGAIManager*)globals->get_subsystem("ai_model");
978 /// FIXME: that must follow the attach ATM ...
979 for (unsigned i = 0; i < numProperties; ++i)
980 mp->addPropertyId(sIdPropertyList[i].id, sIdPropertyList[i].name);
987 FGMultiplayMgr::getMultiplayer(const std::string& callsign)
989 if (0 < mMultiPlayerMap.count(callsign))
990 return mMultiPlayerMap[callsign].get();