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source: code/trunk/src/libraries/network/packet/Gamestate.cc @ 11270

Last change on this file since 11270 was 11083, checked in by muemart, 9 years ago

Fix some clang-tidy warnings.
Also, Serialise.h was doing some C-style casts that ended up being const casts. I moved those const casts as close to the source as possible and changed the loadAndIncrease functions to not do that.

  • Property svn:eol-style set to native
File size: 26.7 KB
RevLine 
[1711]1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
[3084]23 *      Oliver Scheuss
[1711]24 *   Co-authors:
25 *      ...
26 *
27 */
28
[1701]29#include "Gamestate.h"
[3214]30
[2773]31#include <zlib.h>
[3214]32
[8858]33#include "util/Output.h"
[8373]34#include "util/OrxAssert.h"
[9667]35#include "core/CoreIncludes.h"
[2896]36#include "core/GameMode.h"
[9667]37#include "core/object/ObjectList.h"
[3214]38#include "network/synchronisable/Synchronisable.h"
39#include "network/GamestateHandler.h"
[7801]40#include "network/Host.h"
[1701]41
[2171]42namespace orxonox {
[1701]43
44namespace packet {
45
[2662]46#define GAMESTATE_START(data) (data + GamestateHeader::getSize())
[1740]47
[7801]48// #define PACKET_FLAG_GAMESTATE  PacketFlag::Reliable
49#define PACKET_FLAG_GAMESTATE  0
[2087]50
[7163]51inline bool memzero( uint8_t* data, uint32_t datalength)
52{
53  uint64_t* d = (uint64_t*)data;
[2662]54
[7163]55  for( unsigned int i=0; i<datalength/8; i++ )
56  {
57    if( *(d+i) != 0 )
58      return false;
59  }
60  // now process the rest (when datalength isn't a multiple of 4)
61  for( unsigned int j = 8*(datalength/8); j<datalength; j++ )
62  {
63    if( *(data+j) != 0 )
64      return false;
65  }
66  return true;
67}
68
69
70Gamestate::Gamestate():
[7801]71  header_()
[1701]72{
[1907]73  flags_ = flags_ | PACKET_FLAG_GAMESTATE;
[1701]74}
75
[7163]76
[1907]77Gamestate::Gamestate(uint8_t *data, unsigned int clientID):
[7801]78  Packet(data, clientID), header_(data)
[1701]79{
[1907]80  flags_ = flags_ | PACKET_FLAG_GAMESTATE;
[1701]81}
82
[7163]83
[7801]84Gamestate::Gamestate(uint8_t *data):
85  header_(data)
[1907]86{
87  flags_ = flags_ | PACKET_FLAG_GAMESTATE;
[7163]88  data_ = data;
[1907]89}
[1701]90
[7163]91
[2662]92Gamestate::Gamestate(const Gamestate& g) :
[7801]93  Packet( *(Packet*)&g ), header_(this->data_), nrOfVariables_(0)
[2662]94{
95  flags_ = flags_ | PACKET_FLAG_GAMESTATE;
[7163]96  sizes_ = g.sizes_;
[2662]97}
[1907]98
[2662]99
[1701]100Gamestate::~Gamestate()
101{
102}
103
[7163]104
[2171]105bool Gamestate::collectData(int id, uint8_t mode)
[1701]106{
[2662]107  uint32_t tempsize=0, currentsize=0;
[11071]108  assert(data_==nullptr);
[2662]109  uint32_t size = calcGamestateSize(id, mode);
[1740]110
[8858]111  orxout(verbose_more, context::packets) << "G.ST.Man: producing gamestate with id: " << id << endl;
[1701]112  if(size==0)
113    return false;
[2662]114  data_ = new uint8_t[size + GamestateHeader::getSize()];
[7163]115  if(!data_)
116  {
[8858]117    orxout(internal_warning, context::packets) << "GameStateManager: could not allocate memory" << endl;
[1701]118    return false;
119  }
[6417]120
[7801]121  // tell the gamestate header where to store the data
122  header_.setData(this->data_);
[2087]123
[1701]124  //start collect data synchronisable by synchronisable
[7163]125  uint8_t *mem = data_; // in this stream store all data of the variables and the headers of the synchronisable
[2662]126  mem += GamestateHeader::getSize();
[2171]127  ObjectList<Synchronisable>::iterator it;
[11071]128  for(it = ObjectList<Synchronisable>().begin(); it; ++it)
[7163]129  {
[6417]130
[3084]131//     tempsize=it->getSize(id, mode);
132
[7163]133    tempsize = it->getData(mem, this->sizes_, id, mode);
[3084]134    if ( tempsize != 0 )
[11071]135      dataVector_.emplace_back(it->getObjectID(), it->getContextID(), tempsize, mem-data_);
[6417]136
[2662]137#ifndef NDEBUG
[7163]138    if(currentsize+tempsize > size)
139    {
[2171]140      assert(0); // if we don't use multithreading this part shouldn't be neccessary
[1701]141      // start allocate additional memory
[8858]142      orxout(internal_info, context::packets) << "Gamestate: need additional memory" << endl;
[2171]143      ObjectList<Synchronisable>::iterator temp = it;
[2662]144      uint32_t addsize=tempsize;
[1701]145      while(++temp)
[1907]146        addsize+=temp->getSize(id, mode);
[2662]147      data_ = (uint8_t *)realloc(data_, GamestateHeader::getSize() + currentsize + addsize);
[1701]148      if(!data_)
149        return false;
150      size = currentsize+addsize;
151    }// stop allocate additional memory
[2662]152#endif
[3084]153//     if(!it->getData(mem, id, mode))
154//       return false; // mem pointer gets automatically increased because of call by reference
[1701]155    // increase size counter by size of current synchronisable
156    currentsize+=tempsize;
157  }
[1740]158
159
[1701]160  //start write gamestate header
[7801]161  header_.setDataSize( currentsize );
[8327]162  header_.setCompSize( 0 );
[7801]163  header_.setID( id );
164  header_.setBaseID( GAMESTATEID_INITIAL );
165  header_.setDiffed( false );
166  header_.setComplete( true );
167  header_.setCompressed( false );
[1701]168  //stop write gamestate header
[1740]169
[8858]170  orxout(verbose_more, context::packets) << "Gamestate: Gamestate size: " << currentsize << endl;
171  orxout(verbose_more, context::packets) << "Gamestate: 'estimated' (and corrected) Gamestate size: " << size << endl;
[1701]172  return true;
173}
174
[7163]175
[2171]176bool Gamestate::spreadData(uint8_t mode)
[1701]177{
[8858]178  orxout(verbose_more, context::packets) << "processing gamestate with id " << header_.getID() << endl;
[1751]179  assert(data_);
[7801]180  assert(!header_.isCompressed());
[2662]181  uint8_t *mem=data_+GamestateHeader::getSize();
[1907]182  Synchronisable *s;
[7801]183 
[1907]184  // update the data of the objects we received
[7801]185  while(mem < data_+GamestateHeader::getSize()+header_.getDataSize())
[7163]186  {
[2662]187    SynchronisableHeader objectheader(mem);
[1701]188
[2662]189    s = Synchronisable::getSynchronisable( objectheader.getObjectID() );
[1907]190    if(!s)
[1701]191    {
[2896]192      if (!GameMode::isMaster())
[2662]193      {
194        Synchronisable::fabricate(mem, mode);
195      }
196      else
197      {
[8858]198//         orxout(verbose, context::packets) << "not creating object of classid " << objectheader.getClassID() << endl;
[7163]199        mem += objectheader.getDataSize() + ( objectheader.isDiffed() ? SynchronisableHeaderLight::getSize() : SynchronisableHeader::getSize() );
[2662]200      }
[1701]201    }
[1907]202    else
203    {
[8858]204//       orxout(verbose, context::packets) << "updating object of classid " << objectheader.getClassID() << endl;
[8394]205      OrxVerify(s->updateData(mem, mode), "ERROR: could not update Synchronisable with Gamestate data");
[1907]206    }
[1701]207  }
[7844]208  assert((uintptr_t)(mem-data_) == GamestateHeader::getSize()+header_.getDataSize());
[7801]209 
[2662]210   // In debug mode, check first, whether there are no duplicate objectIDs
211#ifndef NDEBUG
[7163]212  if(this->getID()%1000==1)
213  {
[3084]214    std::list<uint32_t> v1;
[11071]215    for (Synchronisable* synchronisable : ObjectList<Synchronisable>())
[7163]216    {
[11071]217      if (synchronisable->getObjectID() == OBJECTID_UNKNOWN)
[7163]218      {
[11071]219        if (synchronisable->objectMode_ != 0x0)
[7163]220        {
[8858]221          orxout(user_error, context::packets) << "Found object with OBJECTID_UNKNOWN on the client with objectMode != 0x0!" << endl;
222          orxout(user_error, context::packets) << "Possible reason for this error: Client created a synchronized object without the Server's approval." << endl;
[11071]223          orxout(user_error, context::packets) << "Objects class: " << synchronisable->getIdentifier()->getName() << endl;
[3084]224          assert(false);
225        }
[2662]226      }
[7163]227      else
228      {
[11071]229        for (uint32_t id : v1)
[7163]230        {
[11071]231          if (synchronisable->getObjectID() == id)
[7163]232          {
[8858]233            orxout(user_error, context::packets) << "Found duplicate objectIDs on the client!" << endl
234                                                 << "Are you sure you don't create a Sychnronisable objcect with 'new' \
235                                                     that doesn't have objectMode = 0x0?" << endl;
[3084]236            assert(false);
237          }
[2662]238        }
[11071]239        v1.push_back(synchronisable->getObjectID());
[2662]240      }
241    }
242  }
243#endif
[1701]244  return true;
245}
246
[7163]247
[2662]248uint32_t Gamestate::getSize() const
[1701]249{
[1711]250  assert(data_);
[7801]251  if(header_.isCompressed())
252    return header_.getCompSize()+GamestateHeader::getSize();
[1701]253  else
254  {
[7801]255    return header_.getDataSize()+GamestateHeader::getSize();
[1701]256  }
257}
258
[7163]259
260bool Gamestate::operator==(packet::Gamestate gs)
261{
[2662]262  uint8_t *d1 = data_+GamestateHeader::getSize();
263  uint8_t *d2 = gs.data_+GamestateHeader::getSize();
[8394]264  GamestateHeader h1(data_);
265  GamestateHeader h2(gs.data_);
266  assert(h1.getDataSize() == h2.getDataSize());
[1751]267  assert(!isCompressed());
268  assert(!gs.isCompressed());
[8394]269  return memcmp(d1, d2, h1.getDataSize())==0;
[1751]270}
271
[7163]272
[7801]273bool Gamestate::process(orxonox::Host* host)
[1701]274{
[7801]275  return host->addGamestate(this, getPeerID());
[1701]276}
277
[1907]278
[1701]279bool Gamestate::compressData()
280{
[2662]281  assert(data_);
[7801]282  assert(!header_.isCompressed());
283  uLongf buffer = (uLongf)(((header_.getDataSize() + 12)*1.01)+1);
[1701]284  if(buffer==0)
285    return false;
[1740]286
[2662]287  uint8_t *ndata = new uint8_t[buffer+GamestateHeader::getSize()];
288  uint8_t *dest = ndata + GamestateHeader::getSize();
289  uint8_t *source = data_ + GamestateHeader::getSize();
[1701]290  int retval;
[7801]291  retval = compress( dest, &buffer, source, (uLong)(header_.getDataSize()) );
[7163]292  switch ( retval )
293  {
[8858]294    case Z_OK: orxout(verbose_more, context::packets) << "G.St.Man: compress: successfully compressed" << endl; break;
295    case Z_MEM_ERROR: orxout(internal_error, context::packets) << "G.St.Man: compress: not enough memory available in gamestate.compress" << endl; return false;
296    case Z_BUF_ERROR: orxout(internal_warning, context::packets) << "G.St.Man: compress: not enough memory available in the buffer in gamestate.compress" << endl; return false;
297    case Z_DATA_ERROR: orxout(internal_warning, context::packets) << "G.St.Man: compress: data corrupted in gamestate.compress" << endl; return false;
[1701]298  }
299
300  //copy and modify header
[7801]301  GamestateHeader *temp = new GamestateHeader(data_);
302  header_.setData(ndata);
303  header_ = *temp;
[2662]304  delete temp;
[1701]305  //delete old data
306  delete[] data_;
307  //save new data
308  data_ = ndata;
[7801]309  header_.setCompSize( buffer );
310  header_.setCompressed( true );
[8858]311  orxout(verbose, context::packets) << "gamestate compress datasize: " << header_.getDataSize() << " compsize: " << header_.getCompSize() << endl;
[1701]312  return true;
313}
[7163]314
315
[1701]316bool Gamestate::decompressData()
317{
[2662]318  assert(data_);
[7801]319  assert(header_.isCompressed());
[8858]320  orxout(verbose, context::packets) << "GameStateClient: uncompressing gamestate. id: " << header_.getID() << ", baseid: " << header_.getBaseID() << ", datasize: " << header_.getDataSize() << ", compsize: " << header_.getCompSize() << endl;
[7801]321  uint32_t datasize = header_.getDataSize();
322  uint32_t compsize = header_.getCompSize();
[2662]323  uint32_t bufsize;
[1907]324  bufsize = datasize;
[1751]325  assert(bufsize!=0);
[2662]326  uint8_t *ndata = new uint8_t[bufsize + GamestateHeader::getSize()];
327  uint8_t *dest = ndata + GamestateHeader::getSize();
328  uint8_t *source = data_ + GamestateHeader::getSize();
[1701]329  int retval;
[1751]330  uLongf length=bufsize;
331  retval = uncompress( dest, &length, source, (uLong)compsize );
[7163]332  switch ( retval )
333  {
[8858]334    case Z_OK: orxout(verbose_more, context::packets) << "successfully decompressed" << endl; break;
335    case Z_MEM_ERROR: orxout(internal_error, context::packets) << "not enough memory available" << endl; return false;
336    case Z_BUF_ERROR: orxout(internal_warning, context::packets) << "not enough memory available in the buffer" << endl; return false;
337    case Z_DATA_ERROR: orxout(internal_warning, context::packets) << "data corrupted (zlib)" << endl; return false;
[1701]338  }
[1752]339
[1701]340  //copy over the header
[7801]341  GamestateHeader* temp = new GamestateHeader( data_ );
342  header_.setData(ndata);
343  header_ = *temp;
[2662]344  delete temp;
[2087]345
[7163]346  if (this->bDataENetAllocated_)
347  {
[2087]348    // Memory was allocated by ENet. --> We let it be since enet_packet_destroy will
349    // deallocated it anyway. So data and packet stay together.
350    this->bDataENetAllocated_ = false;
351  }
[7163]352  else
353  {
[2087]354    // We allocated the memory in the first place (unlikely). So we destroy the old data
355    // and overwrite it with the new decompressed data.
356    delete[] this->data_;
357  }
358
[1751]359  //set new pointers
[1701]360  data_ = ndata;
[7801]361  header_.setCompressed( false );
362  assert(header_.getDataSize()==datasize);
363  assert(header_.getCompSize()==compsize);
[1701]364  return true;
365}
366
[7163]367
[7801]368inline void /*Gamestate::*/diffObject( uint8_t*& newDataPtr, uint8_t*& origDataPtr, uint8_t*& baseDataPtr, SynchronisableHeader& objectHeader, std::vector<uint32_t>::iterator& sizes )
369{
370  assert( objectHeader.getDataSize() == SynchronisableHeader(baseDataPtr).getDataSize() );
371 
372  uint32_t objectOffset = SynchronisableHeader::getSize(); // offset inside the object in the origData and baseData
373  // Check whether the whole object stayed the same
374  if( memcmp( origDataPtr+objectOffset, baseDataPtr+objectOffset, objectHeader.getDataSize()) == 0 )
375  {
[8858]376//     orxout(verbose, context::packets) << "skip object " << Synchronisable::getSynchronisable(objectHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]377    origDataPtr += objectOffset + objectHeader.getDataSize(); // skip the whole object
378    baseDataPtr += objectOffset + objectHeader.getDataSize();
379    sizes += Synchronisable::getSynchronisable(objectHeader.getObjectID())->getNrOfVariables();
380  }
381  else
382  {
383    // Now start to diff the Object
384    SynchronisableHeaderLight newObjectHeader(newDataPtr);
385    newObjectHeader = objectHeader; // copy over the objectheader
386    VariableID variableID = 0;
387    uint32_t diffedObjectOffset = SynchronisableHeaderLight::getSize();
388    // iterate through all variables
389    while( objectOffset < objectHeader.getDataSize()+SynchronisableHeader::getSize() )
390    {
391      // check whether variable changed and write id and copy over variable to the new stream
392      // otherwise skip variable
393      uint32_t varSize = *sizes;
394      assert( varSize == Synchronisable::getSynchronisable(objectHeader.getObjectID())->getVarSize(variableID) );
395      if ( varSize != 0 )
396      {
397        if ( memcmp(origDataPtr+objectOffset, baseDataPtr+objectOffset, varSize) != 0 )
398        {
399          *(VariableID*)(newDataPtr+diffedObjectOffset) = variableID; // copy over the variableID
400          diffedObjectOffset += sizeof(VariableID);
401          memcpy( newDataPtr+diffedObjectOffset, origDataPtr+objectOffset, varSize );
402          diffedObjectOffset += varSize;
403          objectOffset += varSize;
404        }
405        else
406        {
407          objectOffset += varSize;
408        }
409      }
410
411      ++variableID;
412      ++sizes;
413    }
414   
415    // if there are variables from this object with 0 size left in sizes
416    if( Synchronisable::getSynchronisable(objectHeader.getObjectID())->getNrOfVariables() != variableID )
417      sizes += Synchronisable::getSynchronisable(objectHeader.getObjectID())->getNrOfVariables() - variableID;
418   
419    newObjectHeader.setDiffed(true);
420    newObjectHeader.setDataSize(diffedObjectOffset-SynchronisableHeaderLight::getSize());
421    assert(objectOffset == objectHeader.getDataSize()+SynchronisableHeader::getSize());
422    assert(newObjectHeader.getDataSize()>0);
423   
424    origDataPtr += objectOffset;
425    baseDataPtr += objectOffset;
426    newDataPtr += diffedObjectOffset;
427  }
428}
429
430inline void /*Gamestate::*/copyObject( uint8_t*& newData, uint8_t*& origData, uint8_t*& baseData, SynchronisableHeader& objectHeader, std::vector<uint32_t>::iterator& sizes )
431{
[8858]432  //       orxout(verbose, context::packets) << "docopy" << endl;
[7801]433  // Just copy over the whole Object
434  memcpy( newData, origData, objectHeader.getDataSize()+SynchronisableHeader::getSize() );
435  SynchronisableHeader(newData).setDiffed(false);
436 
437  newData += objectHeader.getDataSize()+SynchronisableHeader::getSize();
438  origData += objectHeader.getDataSize()+SynchronisableHeader::getSize();
439//   SynchronisableHeader baseHeader( baseData );
440//   baseData += baseHeader.getDataSize()+SynchronisableHeader::getSize();
[8858]441  //       orxout(verbose, context::packets) << "copy " << h.getObjectID() << endl;
442  //       orxout(verbose, context::packets) << "copy " << h.getObjectID() << ":";
[7801]443  sizes += Synchronisable::getSynchronisable(objectHeader.getObjectID())->getNrOfVariables();
444//   for( unsigned int i = 0; i < Synchronisable::getSynchronisable(objectHeader.getObjectID())->getNrOfVariables(); ++i )
445//   {
[8858]446//     //         orxout(verbose, context::packets) << " " << *sizes;
[7801]447//     ++sizes;
448//   }
[8858]449    //       orxout(verbose, context::packets) << endl;
[7801]450}
451
452inline bool findObject(uint8_t*& dataPtr, uint8_t* endPtr, SynchronisableHeader& objectHeader)
453{
454  // Some assertions to make sure the dataPtr is valid (pointing to a SynchronisableHeader)
455  {
456    SynchronisableHeader htemp2(dataPtr);
457    assert(htemp2.getClassID()<500);
458    assert(htemp2.getDataSize()!=0 && htemp2.getDataSize()<1000);
459    assert(htemp2.isDiffed()==false);
460  }
461  uint32_t objectID = objectHeader.getObjectID();
462  while ( dataPtr < endPtr )
463  {
464    SynchronisableHeader htemp(dataPtr);
465    assert( htemp.getDataSize()!=0 );
466    if ( htemp.getObjectID() == objectID )
467    {
468      assert( objectHeader.getClassID() == htemp.getClassID() );
[9667]469      assert( objectHeader.getContextID() == htemp.getContextID() );
[7801]470      return true;
471    }
472    {
473      if( dataPtr+htemp.getDataSize()+SynchronisableHeader::getSize() < endPtr )
474      {
475        SynchronisableHeader htemp2(dataPtr+htemp.getDataSize()+SynchronisableHeader::getSize());
476        assert(htemp2.getClassID()<500);
477        assert(htemp2.getDataSize()!=0 && htemp2.getDataSize()<1000);
478        assert(htemp2.isDiffed()==false);
479      }
480    }
481    dataPtr += htemp.getDataSize()+SynchronisableHeader::getSize();
482   
483  }
484  assert(dataPtr == endPtr);
485 
486  return false;
487}
488
[7163]489Gamestate* Gamestate::diffVariables(Gamestate *base)
[1701]490{
[11083]491  assert(base); assert(data_ && base->data_);
[7801]492  assert(!header_.isCompressed() && !base->header_.isCompressed());
493  assert(!header_.isDiffed());
494  assert( header_.getDataSize() && base->header_.getDataSize() );
[7163]495
496
497  // *** first do a raw diff of the two gamestates
498
[7801]499  uint8_t *baseDataPtr = GAMESTATE_START(base->data_);
500  uint8_t *origDataPtr = GAMESTATE_START(this->data_);
501  uint8_t *origDataEnd = origDataPtr + header_.getDataSize();
502  uint8_t *baseDataEnd = baseDataPtr + base->header_.getDataSize();
503//   uint32_t origLength = header_.getDataSize();
504//   uint32_t baseLength = base->header_.getDataSize();
[7163]505
[7801]506  // Allocate new space for diffed gamestate
507  uint32_t newDataSize = header_.getDataSize() + GamestateHeader::getSize() + sizeof(uint32_t)*this->nrOfVariables_;
508  uint8_t *newData = new uint8_t[newDataSize]; // this is the maximum size needed in the worst case
509  uint8_t *destDataPtr = GAMESTATE_START(newData);
[7163]510
[7801]511  std::vector<uint32_t>::iterator sizesIt = this->sizes_.begin();
[7163]512
[7801]513  while( origDataPtr < origDataEnd )
[7163]514  {
515    //iterate through all objects
516
[7801]517    SynchronisableHeader origHeader(origDataPtr);
[7163]518
519    // Find (if possible) the current object in the datastream of the old gamestate
520    // Start at the current offset position
[7801]521    if(baseDataPtr == baseDataEnd)
522      baseDataPtr = GAMESTATE_START(base->data_);
523    uint8_t* oldBaseDataPtr = baseDataPtr;
524   
525    assert(baseDataPtr < baseDataEnd);
526    assert(destDataPtr < newData + newDataSize);
527    assert(sizesIt != this->sizes_.end());
528   
529    assert(Synchronisable::getSynchronisable(origHeader.getObjectID()));
530    assert(ClassByID(origHeader.getClassID()));
531    assert(origHeader.getDataSize() < 500);
532   
533    if( findObject(baseDataPtr, baseDataEnd, origHeader) )
[7163]534    {
[7801]535      SynchronisableHeader baseHeader(baseDataPtr);
536      assert(Synchronisable::getSynchronisable(baseHeader.getObjectID()));
537      assert(ClassByID(baseHeader.getClassID()));
538      assert(baseHeader.getDataSize() < 500);
539      if( SynchronisableHeader(baseDataPtr).getDataSize()==origHeader.getDataSize() )
[7163]540      {
[8858]541//         orxout(verbose, context::packets) << "diffing object in order: " << Synchronisable::getSynchronisable(origHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]542        diffObject(destDataPtr, origDataPtr, baseDataPtr, origHeader, sizesIt);
[1701]543      }
[7801]544      else
[7163]545      {
[8858]546//         orxout(verbose, context::packets) << "copy object because of different data sizes (1): " << Synchronisable::getSynchronisable(origHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]547        copyObject(destDataPtr, origDataPtr, baseDataPtr, origHeader, sizesIt);
548        assert(sizesIt != this->sizes_.end() || origDataPtr==origDataEnd);
[7163]549      }
[7801]550       
[7163]551    }
[7801]552    else
[7163]553    {
[7801]554      assert( baseDataPtr == baseDataEnd );
555      baseDataPtr = GAMESTATE_START(base->data_);
556      if( findObject(baseDataPtr, oldBaseDataPtr, origHeader) )
[7163]557      {
[7801]558        SynchronisableHeader baseHeader(baseDataPtr);
559        assert(Synchronisable::getSynchronisable(baseHeader.getObjectID()));
560        assert(ClassByID(baseHeader.getClassID()));
561        assert(baseHeader.getDataSize() < 500);
562        if( SynchronisableHeader(baseDataPtr).getDataSize()==origHeader.getDataSize() )
[7163]563        {
[8858]564//           orxout(verbose, context::packets) << "diffing object out of order: " << Synchronisable::getSynchronisable(origHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]565          diffObject(destDataPtr, origDataPtr, baseDataPtr, origHeader, sizesIt);
[7163]566        }
[7801]567        else
568        {
[8858]569//           orxout(verbose, context::packets) << "copy object because of different data sizes (2): " << Synchronisable::getSynchronisable(origHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]570          copyObject(destDataPtr, origDataPtr, baseDataPtr, origHeader, sizesIt);
571          assert(sizesIt != this->sizes_.end() || origDataPtr==origDataEnd);
572        }
[7163]573      }
[7801]574      else
[7163]575      {
[8858]576//         orxout(verbose, context::packets) << "copy object: " << Synchronisable::getSynchronisable(origHeader.getObjectID())->getIdentifier()->getName() << endl;
[7801]577        assert(baseDataPtr == oldBaseDataPtr);
578        copyObject(destDataPtr, origDataPtr, baseDataPtr, origHeader, sizesIt);
579        assert(sizesIt != this->sizes_.end() || origDataPtr==origDataEnd);
[7163]580      }
581    }
[1701]582  }
[7801]583  assert(sizesIt==this->sizes_.end());
[1701]584
[7163]585
[7801]586  Gamestate *g = new Gamestate(newData, getPeerID());
587  (g->header_) = header_;
588  g->header_.setBaseID( base->getID() );
589  g->header_.setDataSize(destDataPtr - newData - GamestateHeader::getSize());
[1751]590  g->flags_=flags_;
591  g->packetDirection_ = packetDirection_;
[7163]592  assert(!g->isCompressed());
[1701]593  return g;
[7163]594}
[3198]595
[7163]596
[7801]597/*Gamestate* Gamestate::diffData(Gamestate *base)
[3198]598{
599  assert(this && base); assert(data_ && base->data_);
[7801]600  assert(!header_.isCompressed() && !base->header_.isCompressed());
601  assert(!header_.isDiffed());
[6417]602
[3198]603  uint8_t *basep = GAMESTATE_START(base->data_);
604  uint8_t *gs = GAMESTATE_START(this->data_);
[7801]605  uint32_t dest_length = header_.getDataSize();
[6417]606
[3198]607  if(dest_length==0)
[11071]608    return nullptr;
[6417]609
[3198]610  uint8_t *ndata = new uint8_t[dest_length*sizeof(uint8_t)+GamestateHeader::getSize()];
611  uint8_t *dest = GAMESTATE_START(ndata);
[6417]612
[7801]613  rawDiff( dest, gs, basep, header_.getDataSize(), base->header_.getDataSize() );
[3198]614#ifndef NDEBUG
615  uint8_t *dest2 = new uint8_t[dest_length];
[7801]616  rawDiff( dest2, dest, basep, header_.getDataSize(), base->header_.getDataSize() );
[3198]617  assert( memcmp( dest2, gs, dest_length) == 0 );
[5929]618  delete dest2;
[3198]619#endif
620
621  Gamestate *g = new Gamestate(ndata, getClientID());
622  assert(g->header_);
623  *(g->header_) = *header_;
[7801]624  g->header_.setDiffed( true );
625  g->header_.setBaseID( base->getID() );
[3198]626  g->flags_=flags_;
627  g->packetDirection_ = packetDirection_;
628  assert(g->isDiffed());
629  assert(!g->isCompressed());
630  return g;
[1701]631}
632
[7163]633
634Gamestate* Gamestate::undiff(Gamestate *base)
[3198]635{
636  assert(this && base); assert(data_ && base->data_);
[7801]637  assert(!header_.isCompressed() && !base->header_.isCompressed());
638  assert(header_.isDiffed());
[6417]639
[3198]640  uint8_t *basep = GAMESTATE_START(base->data_);
641  uint8_t *gs = GAMESTATE_START(this->data_);
[7801]642  uint32_t dest_length = header_.getDataSize();
[6417]643
[3198]644  if(dest_length==0)
[11071]645    return nullptr;
[6417]646
[3198]647  uint8_t *ndata = new uint8_t[dest_length*sizeof(uint8_t)+GamestateHeader::getSize()];
648  uint8_t *dest = ndata + GamestateHeader::getSize();
[6417]649
[7801]650  rawDiff( dest, gs, basep, header_.getDataSize(), base->header_.getDataSize() );
[6417]651
[3198]652  Gamestate *g = new Gamestate(ndata, getClientID());
653  assert(g->header_);
654  *(g->header_) = *header_;
[7801]655  g->header_.setDiffed( false );
[3198]656  g->flags_=flags_;
657  g->packetDirection_ = packetDirection_;
658  assert(!g->isDiffed());
659  assert(!g->isCompressed());
660  return g;
661}
662
663
664void Gamestate::rawDiff( uint8_t* newdata, uint8_t* data, uint8_t* basedata, uint32_t datalength, uint32_t baselength)
665{
666  uint64_t* gd = (uint64_t*)data;
667  uint64_t* bd = (uint64_t*)basedata;
668  uint64_t* nd = (uint64_t*)newdata;
[6417]669
[3198]670  unsigned int i;
671  for( i=0; i<datalength/8; i++ )
672  {
673    if( i<baselength/8 )
674      *(nd+i) = *(gd+i) ^ *(bd+i);  // xor the data
675    else
676      *(nd+i) = *(gd+i); // just copy over the data
677  }
678  unsigned int j;
679  // now process the rest (when datalength isn't a multiple of 4)
680  for( j = 8*(datalength/8); j<datalength; j++ )
681  {
682    if( j<baselength )
683      *(newdata+j) = *(data+j) ^ *(basedata+j); // xor
684    else
685      *(newdata+j) = *(data+j); // just copy
686  }
687  assert(j==datalength);
[7801]688}*/
[3198]689
[7163]690
[7801]691/*Gamestate* Gamestate::doSelection(unsigned int clientID, unsigned int targetSize){
[1907]692  assert(data_);
[2662]693  std::list<obj>::iterator it;
[2087]694
[1907]695  // allocate memory for new data
[7801]696  uint8_t *gdata = new uint8_t[header_.getDataSize()+GamestateHeader::getSize()];
[1907]697  // create a gamestate out of it
698  Gamestate *gs = new Gamestate(gdata);
[2662]699  uint8_t *newdata = gdata + GamestateHeader::getSize();
[1907]700  uint8_t *origdata = GAMESTATE_START(data_);
[2087]701
[1907]702  //copy the GamestateHeader
[2662]703  assert(gs->header_);
704  *(gs->header_) = *header_;
[2087]705
[2662]706  uint32_t objectOffset;
707  unsigned int objectsize, destsize=0;
708  // TODO: Why is this variable not used?
709  //Synchronisable *object;
[2087]710
[2662]711  //call TrafficControl
[7801]712  TrafficControl::getInstance()->processObjectList( clientID, header_.getID(), dataVector_ );
[2662]713
[1907]714  //copy in the zeros
[3084]715//   std::list<obj>::iterator itt;
[8858]716//   orxout() << "myvector contains:";
[3084]717//   for ( itt=dataVector_.begin() ; itt!=dataVector_.end(); itt++ )
[8858]718//     orxout() << " " << (*itt).objID;
719//   orxout() << endl;
[3084]720  for(it=dataVector_.begin(); it!=dataVector_.end();){
[2662]721    SynchronisableHeader oldobjectheader(origdata);
722    SynchronisableHeader newobjectheader(newdata);
[7163]723    if ( (*it).objSize == 0 )
[2662]724    {
725      ++it;
726      continue;
727    }
[7163]728    objectsize = oldobjectheader.getDataSize()+SynchronisableHeader::getSize();
[2662]729    objectOffset=SynchronisableHeader::getSize(); //skip the size and the availableData variables in the objectheader
[7163]730    if ( (*it).objID == oldobjectheader.getObjectID() ){
[2662]731      memcpy(newdata, origdata, objectsize);
732      ++it;
[1907]733    }else{
[2662]734      newobjectheader = oldobjectheader;
[2171]735      memset(newdata+objectOffset, 0, objectsize-objectOffset);
[1907]736    }
737    newdata += objectsize;
738    origdata += objectsize;
[2662]739    destsize += objectsize;
[1907]740  }
[2662]741#ifndef NDEBUG
742  uint32_t origsize = destsize;
[7801]743  while ( origsize < header_.getDataSize() )
[2662]744  {
745    SynchronisableHeader oldobjectheader(origdata);
[7163]746    objectsize = oldobjectheader.getDataSize()+SynchronisableHeader::getSize();
[2662]747    origdata += objectsize;
748    origsize += objectsize;
[1907]749  }
[7801]750  assert(origsize==header_.getDataSize());
[2662]751  assert(destsize!=0);
752#endif
[7801]753  gs->header_.setDataSize( destsize );
[1907]754  return gs;
[7801]755}*/
[1907]756
[2087]757
[7801]758uint32_t Gamestate::calcGamestateSize(uint32_t id, uint8_t mode)
[1701]759{
[7163]760  uint32_t size = 0;
761  uint32_t nrOfVariables = 0;
[1701]762    // get total size of gamestate
[11071]763  for(Synchronisable* synchronisable : ObjectList<Synchronisable>()){
764    size+=synchronisable->getSize(id, mode); // size of the actual data of the synchronisable
765    nrOfVariables += synchronisable->getNrOfVariables();
[7163]766  }
[8858]767//   orxout() << "allocating " << nrOfVariables << " ints" << endl;
[7163]768  this->sizes_.reserve(nrOfVariables);
[1701]769  return size;
770}
771
[7163]772
[2662]773} //namespace packet
774} //namespace orxonox
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