#include "quakedef.h" //this file contains q3 netcode related things. //field info, netchan, and the WriteBits stuff (which should probably be moved to common.c with the others) //also contains vm filesystem #define MAX_VM_FILES 8 typedef struct { char name[256]; char *data; int bufferlen; int len; int ofs; int accessmode; int owner; } vm_fopen_files_t; vm_fopen_files_t vm_fopen_files[MAX_VM_FILES]; //FIXME: why does this not use the VFS system? int VM_fopen (char *name, int *handle, int fmode, int owner) { int i; if (!handle) return FS_FLocateFile(name, FSLFRT_IFFOUND, NULL); *handle = 0; for (i = 0; i < MAX_VM_FILES; i++) if (!vm_fopen_files[i].data) break; if (i == MAX_VM_FILES) //too many already open { return -1; } if (name[1] == ':' || //dos filename absolute path specified - reject. *name == '\\' || *name == '/' || //absolute path was given - reject strstr(name, "..")) //someone tried to be cleaver. { return -1; } switch (fmode) { case VM_FS_READ: vm_fopen_files[i].data = FS_LoadMallocFile(name); vm_fopen_files[i].bufferlen = vm_fopen_files[i].len = com_filesize; vm_fopen_files[i].ofs = 0; if (vm_fopen_files[i].data) break; else return -1; break; /* case VM_FS_APPEND: case VM_FS_APPEND2: vm_fopen_files[i].data = FS_LoadMallocFile(name); vm_fopen_files[i].ofs = vm_fopen_files[i].bufferlen = vm_fopen_files[i].len = com_filesize; if (vm_fopen_files[i].data) break; //fall through case VM_FS_WRITE: vm_fopen_files[i].bufferlen = 8192; vm_fopen_files[i].data = BZ_Malloc(vm_fopen_files[i].bufferlen); vm_fopen_files[i].len = 0; vm_fopen_files[i].ofs = 0; break; */ default: //bad return -1; } Q_strncpyz(vm_fopen_files[i].name, name, sizeof(vm_fopen_files[i].name)); vm_fopen_files[i].accessmode = fmode; vm_fopen_files[i].owner = owner; *handle = i+1; return vm_fopen_files[i].len; } void VM_fclose (int fnum, int owner) { fnum--; if (fnum < 0 || fnum >= MAX_VM_FILES) return; //out of range if (vm_fopen_files[fnum].owner != owner) return; //cgs? if (!vm_fopen_files[fnum].data) return; //not open switch(vm_fopen_files[fnum].accessmode) { case VM_FS_READ: BZ_Free(vm_fopen_files[fnum].data); break; case VM_FS_WRITE: case VM_FS_APPEND: case VM_FS_APPEND2: COM_WriteFile(vm_fopen_files[fnum].name, vm_fopen_files[fnum].data, vm_fopen_files[fnum].len); BZ_Free(vm_fopen_files[fnum].data); break; } vm_fopen_files[fnum].data = NULL; } int VM_FRead (char *dest, int quantity, int fnum, int owner) { fnum--; if (fnum < 0 || fnum >= MAX_VM_FILES) return 0; //out of range if (vm_fopen_files[fnum].owner != owner) return 0; //cgs? if (!vm_fopen_files[fnum].data) return 0; //not open if (quantity > vm_fopen_files[fnum].len - vm_fopen_files[fnum].ofs) quantity = vm_fopen_files[fnum].len - vm_fopen_files[fnum].ofs; memcpy(dest, vm_fopen_files[fnum].data + vm_fopen_files[fnum].ofs, quantity); vm_fopen_files[fnum].ofs += quantity; return quantity; } /* void VM_fputs (progfuncs_t *prinst, struct globalvars_s *pr_globals) { int fnum = G_FLOAT(OFS_PARM0); char *msg = PF_VarString(prinst, 1, pr_globals); int len = strlen(msg); if (fnum < 0 || fnum >= MAX_QC_FILES) return; //out of range if (!pf_fopen_files[fnum].data) return; //not open if (pf_fopen_files[fnum].prinst != prinst) return; //this just isn't ours. if (pf_fopen_files[fnum].bufferlen < pf_fopen_files[fnum].ofs + len) { char *newbuf; pf_fopen_files[fnum].bufferlen = pf_fopen_files[fnum].bufferlen*2 + len; newbuf = BZF_Malloc(pf_fopen_files[fnum].bufferlen); memcpy(newbuf, pf_fopen_files[fnum].data, pf_fopen_files[fnum].len); BZ_Free(pf_fopen_files[fnum].data); pf_fopen_files[fnum].data = newbuf; } memcpy(pf_fopen_files[fnum].data + pf_fopen_files[fnum].ofs, msg, len); if (pf_fopen_files[fnum].len < pf_fopen_files[fnum].ofs + len) pf_fopen_files[fnum].len = pf_fopen_files[fnum].ofs + len; pf_fopen_files[fnum].ofs+=len; } */ void VM_fcloseall (int owner) { int i; for (i = 1; i <= MAX_VM_FILES; i++) { VM_fclose(i, owner); } } typedef struct { char *initialbuffer; char *buffer; char *dir; int found; int bufferleft; int skip; } vmsearch_t; static int VMEnum(const char *match, int size, void *args, void *spath) { char *check; int newlen; match += ((vmsearch_t *)args)->skip; newlen = strlen(match)+1; if (newlen > ((vmsearch_t *)args)->bufferleft) return false; //too many files for the buffer check = ((vmsearch_t *)args)->initialbuffer; while(check < ((vmsearch_t *)args)->buffer) { if (!stricmp(check, match)) return true; //we found this one already check += strlen(check)+1; } memcpy(((vmsearch_t *)args)->buffer, match, newlen); ((vmsearch_t *)args)->buffer+=newlen; ((vmsearch_t *)args)->bufferleft-=newlen; ((vmsearch_t *)args)->found++; return true; } static int IfFound(const char *match, int size, void *args, void *spath) { *(qboolean*)args = true; return true; } static int VMEnumMods(const char *match, int size, void *args, void *spath) { char *check; char desc[1024]; int newlen; int desclen; qboolean foundone; vfsfile_t *f; newlen = strlen(match)+1; if (newlen <= 2) return true; //make sure match is a directory if (match[newlen-2] != '/') return true; if (!stricmp(match, "baseq3/")) return true; //we don't want baseq3 foundone = false; Sys_EnumerateFiles(va("%s%s/", ((vmsearch_t *)args)->dir, match), "*.pk3", IfFound, &foundone, spath); if (foundone == false) return true; //we only count directories with a pk3 file Q_strncpyz(desc, match, sizeof(desc)); f = FS_OpenVFS(va("%sdescription.txt", match), "rb", FS_ROOT); if (f) { VFS_GETS(f, desc, sizeof(desc)); VFS_CLOSE(f); } desclen = strlen(desc)+1; if (newlen+desclen+5 > ((vmsearch_t *)args)->bufferleft) return false; //too many files for the buffer check = ((vmsearch_t *)args)->initialbuffer; while(check < ((vmsearch_t *)args)->buffer) { if (!stricmp(check, match)) return true; //we found this one already check += strlen(check)+1; check += strlen(check)+1; } memcpy(((vmsearch_t *)args)->buffer, match, newlen); ((vmsearch_t *)args)->buffer+=newlen; ((vmsearch_t *)args)->bufferleft-=newlen; memcpy(((vmsearch_t *)args)->buffer, desc, desclen); ((vmsearch_t *)args)->buffer+=desclen; ((vmsearch_t *)args)->bufferleft-=desclen; ((vmsearch_t *)args)->found++; return true; } int VM_GetFileList(char *path, char *ext, char *output, int buffersize) { vmsearch_t vms; vms.initialbuffer = vms.buffer = output; vms.skip = strlen(path)+1; vms.bufferleft = buffersize; vms.found=0; if (!strcmp(path, "$modlist")) { vms.skip=0; Sys_EnumerateFiles((vms.dir=com_quakedir), "*", VMEnumMods, &vms, NULL); if (*com_homedir) Sys_EnumerateFiles((vms.dir=com_homedir), "*", VMEnumMods, &vms, NULL); } else if (*(char *)ext == '.' || *(char *)ext == '/') COM_EnumerateFiles(va("%s/*%s", path, ext), VMEnum, &vms); else COM_EnumerateFiles(va("%s/*.%s", path, ext), VMEnum, &vms); return vms.found; } #if defined(Q3SERVER) || defined(Q3CLIENT) #include "clq3defs.h" //okay, urr, this is bad for dedicated servers. urhum. Maybe they're not looking? It's only typedefs and one extern. #define MAX_VMQ3_CVARS 256 //can be blindly increased cvar_t *q3cvlist[MAX_VMQ3_CVARS]; int VMQ3_Cvar_Register(vmcvar_t *v, char *name, char *defval, int flags) { int i; int fteflags = 0; cvar_t *c; fteflags = flags & (CVAR_ARCHIVE | CVAR_USERINFO | CVAR_SERVERINFO); c = Cvar_Get(name, defval, fteflags, "Q3VM cvars"); if (!c) //command name, etc return 0; for (i = 0; i < MAX_VMQ3_CVARS; i++) { if (!q3cvlist[i]) q3cvlist[i] = c; if (q3cvlist[i] == c) { if (v) { v->handle = i+1; VMQ3_Cvar_Update(v); } return i+1; } } Con_Printf("Ran out of VMQ3 cvar handles\n"); return 0; } int VMQ3_Cvar_Update(vmcvar_t *v) { cvar_t *c; int i; i = v->handle; if (!i) return 0; //not initialised i--; if ((unsigned)i >= MAX_VMQ3_CVARS) return 0; //a hack attempt c = q3cvlist[i]; if (!c) return 0; //that slot isn't active yet v->integer = c->ival; v->value = c->value; v->modificationCount = c->modified; Q_strncpyz(v->string, c->string, sizeof(v->string)); return 1; } /* ============ MSG_WriteRawBytes ============ */ static void MSG_WriteRawBytes( sizebuf_t *msg, int value, int bits ) { qbyte *buf; if( bits <= 8 ) { buf = SZ_GetSpace( msg, 1 ); buf[0] = value; } else if( bits <= 16 ) { buf = SZ_GetSpace( msg, 2 ); buf[0] = value & 0xFF; buf[1] = value >> 8; } else if( bits <= 32 ) { buf = SZ_GetSpace( msg, 4 ); buf[0] = value & 0xFF; buf[1] = (value >> 8) & 0xFF; buf[2] = (value >> 16) & 0xFF; buf[3] = value >> 24; } } /* ============ MSG_WriteRawBits ============ */ static void MSG_WriteRawBits( sizebuf_t *msg, int value, int bits ) { // TODO } /* ============ MSG_WriteHuffBits ============ */ static void MSG_WriteHuffBits( sizebuf_t *msg, int value, int bits ) { int startbits; int remaining; int i; value &= 0xFFFFFFFFU >> (32 - bits); remaining = bits & 7; startbits = msg->currentbit; for( i=0; icurrentbit & 7) ) { msg->data[msg->currentbit >> 3] = 0; } msg->data[msg->currentbit >> 3] |= (value & 1) << (msg->currentbit & 7); msg->currentbit++; value >>= 1; } bits -= remaining; if( bits > 0 ) { for( i=0 ; i<(bits+7)>>3 ; i++ ) { Huff_EmitByte( value & 255, msg->data, &msg->currentbit ); value >>= 8; } } msg->cursize = (msg->currentbit >> 3) + 1; #ifdef MSG_PROFILING msg_bitsEmitted += msg->currentbit - startbits; #endif // MSG_PROFILING } /* ============ MSG_WriteBits ============ */ void MSG_WriteBits(sizebuf_t *msg, int value, int bits) { #ifdef MSG_PROFILING int maxval; #endif // MSG_PROFILING if( msg->maxsize - msg->cursize < 4 ) { msg->overflowed = true; return; } if( !bits || bits < -31 || bits > 32 ) { Sys_Error("MSG_WriteBits: bad bits %i", bits); } #ifdef MSG_PROFILING msg_bitsWritten += bits; if( bits != 32 ) { if( bits > 0 ) { maxval = (1 << bits) - 1; if( value > maxval || maxval < 0 ) { msg_overflows++; } } else { maxval = (1 << (bits - 1)) - 1; if( value > maxval || value < -maxval - 1 ) { msg_overflows++; } } } #endif // MSG_PROFILING if( bits < 0 ) { bits = -bits; } switch( msg->packing ) { default: case SZ_BAD: Sys_Error("MSG_WriteBits: bad msg->packing %i", msg->packing ); break; case SZ_RAWBYTES: MSG_WriteRawBytes( msg, value, bits ); break; case SZ_RAWBITS: MSG_WriteRawBits( msg, value, bits ); break; case SZ_HUFFMAN: MSG_WriteHuffBits( msg, value, bits ); break; } } //////////////////////////////////////////////////////////////////////////////// //q3 netchan //note that the sv and cl both have their own wrappers, to handle encryption. #define MAX_PACKETLEN 1400 #define FRAGMENT_MASK 0x80000000 #define FRAGMENTATION_TRESHOLD (MAX_PACKETLEN-100) qboolean Netchan_ProcessQ3 (netchan_t *chan) { //incoming_reliable_sequence is perhaps wrongly used... int sequence; qboolean fragment; int fragmentStart; int fragmentLength; char adr[MAX_ADR_SIZE]; // Get sequence number MSG_BeginReading(msg_nullnetprim); sequence = MSG_ReadBits(32); // Read the qport if we are a server if (chan->sock == NS_SERVER) { MSG_ReadBits(16); } // Check if packet is a message fragment if (sequence & FRAGMENT_MASK) { sequence &= ~FRAGMENT_MASK; fragment = true; fragmentStart = MSG_ReadBits(16); fragmentLength = MSG_ReadBits(16); } else { fragment = false; fragmentStart = 0; fragmentLength = 0; } /* if (net_showpackets->integer) { if (fragment) { Con_Printf("%s recv %4i : s=%i fragment=%i,%i\n", (chan->sock == NS_CLIENT) ? "client" : "server", net_message.cursize, sequence, fragmentStart, fragmentLength); } else { Con_Printf("%s recv %4i : s=%i\n", (chan->sock == NS_CLIENT) ? "client" : "server", net_message.cursize, sequence); } }*/ // Discard stale or duplicated packets if (sequence <= chan->incoming_sequence) { /* if (net_showdrop->integer || net_showpackets->integer) { Con_Printf("%s:Out of order packet %i at %i\n", NET_AdrToString(chan->remote_address), chan->incoming_sequence); }*/ return false; } // Dropped packets don't keep the message from being used chan->drop_count = sequence - (chan->incoming_sequence + 1); if (chan->drop_count > 0)// && (net_showdrop->integer || net_showpackets->integer)) { Con_DPrintf("%s:Dropped %i packets at %i\n", NET_AdrToString(adr, sizeof(adr), chan->remote_address), chan->drop_count, sequence); } if (!fragment) { // not fragmented chan->incoming_sequence = sequence; chan->last_received = realtime; return true; } // Check for new fragmented message if (chan->incoming_reliable_sequence != sequence) { chan->incoming_reliable_sequence = sequence; chan->in_fragment_length = 0; } // Check fragments sequence if (chan->in_fragment_length != fragmentStart) { // if(net_showdrop->integer || net_showpackets->integer) { Con_Printf("%s:Dropped a message fragment\n", NET_AdrToString(adr, sizeof(adr), chan->remote_address)); } return false; } // Check if fragmentLength is valid if (fragmentLength < 0 || fragmentLength > FRAGMENTATION_TRESHOLD || msg_readcount + fragmentLength > net_message.cursize || chan->in_fragment_length + fragmentLength > sizeof(chan->in_fragment_buf)) { /* if (net_showdrop->integer || net_showpackets->integer) { Con_Printf("%s:illegal fragment length\n", NET_AdrToString(chan->remote_address)); } */ return false; } // Append to the incoming fragment buffer memcpy( chan->in_fragment_buf + chan->in_fragment_length, net_message.data + msg_readcount, fragmentLength); chan->in_fragment_length += fragmentLength; if (fragmentLength == FRAGMENTATION_TRESHOLD) { return false; // there are more fragments of this message } // Check if assembled message fits in buffer if (chan->in_fragment_length > net_message.maxsize) { Con_Printf("%s:fragmentLength %i > net_message.maxsize\n", NET_AdrToString(adr, sizeof(adr), chan->remote_address), chan->in_fragment_length); return false; } // // Reconstruct message properly // SZ_Clear(&net_message); MSG_WriteLong(&net_message, sequence); SZ_Write(&net_message, chan->in_fragment_buf, chan->in_fragment_length); MSG_BeginReading(msg_nullnetprim); MSG_ReadLong(); // No more fragments chan->in_fragment_length = 0; chan->incoming_reliable_sequence = 0; chan->incoming_sequence = sequence; chan->last_received = realtime; return true; } /* ================= Netchan_TransmitNextFragment ================= */ void Netchan_TransmitNextFragment( netchan_t *chan ) { //'reliable' is badly named. it should be 'fragment' instead. //but in the interests of a smaller netchan_t... int i; sizebuf_t send; qbyte send_buf[MAX_PACKETLEN]; int fragmentLength; // Write the packet header memset(&send, 0, sizeof(send)); send.packing = SZ_RAWBYTES; send.maxsize = sizeof(send_buf); send.data = send_buf; MSG_WriteLong( &send, chan->outgoing_sequence | FRAGMENT_MASK ); #ifndef SERVERONLY // Send the qport if we are a client if( chan->sock == NS_CLIENT ) { MSG_WriteShort( &send, cls.qport); } #endif fragmentLength = chan->reliable_length - chan->reliable_start; if( fragmentLength > FRAGMENTATION_TRESHOLD ) { // remaining fragment is still too large fragmentLength = FRAGMENTATION_TRESHOLD; } // Write the fragment header MSG_WriteShort( &send, chan->reliable_start ); MSG_WriteShort( &send, fragmentLength ); // Copy message fragment to the packet SZ_Write( &send, chan->reliable_buf + chan->reliable_start, fragmentLength ); // Send the datagram NET_SendPacket( chan->sock, send.cursize, send.data, chan->remote_address ); // if( net_showpackets->integer ) // { // Con_Printf( "%s send %4i : s=%i fragment=%i,%i\n", (chan->sock == NS_CLIENT) ? "client" : "server", send.cursize, chan->outgoing_sequence, chan->reliable_start, fragmentLength ); // } // Even if we have sent the whole message, // but if fragmentLength == FRAGMENTATION_TRESHOLD we have to write empty // fragment later, because Netchan_Process expects it... chan->reliable_start += fragmentLength; if( chan->reliable_start == chan->reliable_length && fragmentLength != FRAGMENTATION_TRESHOLD ) { // we have sent the whole message! chan->outgoing_sequence++; chan->reliable_length = 0; chan->reliable_start = 0; i = chan->outgoing_sequence & (MAX_LATENT-1); chan->outgoing_size[i] = send.cursize; chan->outgoing_time[i] = realtime; } } /* ================= Netchan_Transmit ================= */ void Netchan_TransmitQ3( netchan_t *chan, int length, const qbyte *data ) { int i; sizebuf_t send; qbyte send_buf[MAX_OVERALLMSGLEN+6]; char adr[MAX_ADR_SIZE]; // Check for message overflow if( length > MAX_OVERALLMSGLEN ) { Con_Printf( "%s: outgoing message overflow\n", NET_AdrToString( adr, sizeof(adr), chan->remote_address ) ); return; } if( length < 0 ) { Sys_Error("Netchan_Transmit: length = %i", length); } // Don't send if there are still unsent fragments if( chan->reliable_length ) { Netchan_TransmitNextFragment( chan ); if( chan->reliable_length ) { Con_Printf( "%s: unsent fragments\n", NET_AdrToString( adr, sizeof(adr), chan->remote_address ) ); return; } /*drop the outgoing packet if we fragmented*/ /*failure to do this results in the wrong encoding due to the outgoing sequence*/ return; } // See if this message is too large and should be fragmented if( length >= FRAGMENTATION_TRESHOLD ) { chan->reliable_length = length; chan->reliable_start = 0; memcpy( chan->reliable_buf, data, length ); Netchan_TransmitNextFragment( chan ); return; } // Write the packet header memset(&send, 0, sizeof(send)); send.packing = SZ_RAWBYTES; send.maxsize = sizeof(send_buf); send.data = send_buf; MSG_WriteLong( &send, chan->outgoing_sequence ); #ifndef SERVERONLY // Send the qport if we are a client if( chan->sock == NS_CLIENT ) { MSG_WriteShort( &send, cls.qport); } #endif // Copy the message to the packet SZ_Write( &send, data, length ); // Send the datagram NET_SendPacket( chan->sock, send.cursize, send.data, chan->remote_address ); /* if( net_showpackets->integer ) { Con_Printf( "%s send %4i : s=%i ack=%i\n", (chan->sock == NS_SERVER) ? "server" : "client", send.cursize , chan->outgoing_sequence, chan->incoming_sequence ); } */ chan->outgoing_sequence++; i = chan->outgoing_sequence & (MAX_LATENT-1); chan->outgoing_size[i] = send.cursize; chan->outgoing_time[i] = realtime; } ////////////// int StringKey( const char *string, int length ) { int i; int key = 0; for( i=0 ; i> 10) ^ (key >> 20)); } typedef struct { #ifdef MSG_SHOWNET const char *name; #endif // MSG_SHOWNET int offset; int bits; // bits > 0 --> unsigned integer // bits = 0 --> float value // bits < 0 --> signed integer } field_t; // field declarations #ifdef MSG_SHOWNET # define PS_FIELD(n,b) { #n, ((size_t)&(((q3playerState_t *)0)->n)), b } # define ES_FIELD(n,b) { #n, ((size_t)&(((q3entityState_t *)0)->n)), b } #else # define PS_FIELD(n,b) { ((size_t)&(((q3playerState_t *)0)->n)), b } # define ES_FIELD(n,b) { ((size_t)&(((q3entityState_t *)0)->n)), b } #endif // field data accessing #define FIELD_INTEGER(s) (*(int *)((qbyte *)(s)+field->offset)) #define FIELD_FLOAT(s) (*(float *)((qbyte *)(s)+field->offset)) #define SNAPPED_BITS 13 #define MAX_SNAPPED (1< nodelta update 'to' == NULL --> do nothing returns false if the ent was removed. ============ */ #ifndef SERVERONLY qboolean MSG_Q3_ReadDeltaEntity( const q3entityState_t *from, q3entityState_t *to, int number ) { const field_t *field; int to_integer; int maxFieldNum; #ifdef MSG_SHOWNET int startbits; qboolean dump; #endif int i; if( number < 0 || number >= MAX_GENTITIES ) { Host_EndGame("MSG_ReadDeltaEntity: Bad delta entity number: %i\n", number); } if( !to ) { return true; } #ifdef MSG_SHOWNET dump = (qboolean)(cl_shownet->integer >= 2); if( dump ) { startbits = msg->bit; } #endif if (MSG_ReadBits(1)) { memset( to, 0, sizeof( *to ) ); to->number = ENTITYNUM_NONE; #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "%3i: #%-3i remove\n", msg->readcount, number ); } #endif return false; // removed } if( !from ) { memset( to, 0, sizeof( *to ) ); } else { memcpy( to, from, sizeof( *to ) ); } to->number = number; if( !MSG_ReadBits( 1 ) ) { return true; // unchanged } #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "%3i: #%-3i ", msg->readcount, to->number ); } #endif maxFieldNum = MSG_ReadByte(); #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "<%i> ", maxFieldNum ); } #endif if( maxFieldNum > esTableSize ) { Host_EndGame("MSG_ReadDeltaEntity: maxFieldNum > esTableSize"); } for( i=0, field=esFieldTable ; iname, 0 ); } #endif continue; // field set to zero } if( field->bits ) { to_integer = MSG_ReadBits( field->bits ); FIELD_INTEGER( to ) = to_integer; #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "%s:%i ", field->name, to_integer ); } #endif continue; // integer value } if( !MSG_ReadBits( 1 ) ) { to_integer = MSG_ReadBits( 13 ) - 0x1000; FIELD_FLOAT( to ) = (float)to_integer; #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "%s:%i ", field->name, to_integer ); } #endif } else { FIELD_INTEGER( to ) = MSG_ReadLong(); #ifdef MSG_SHOWNET if( dump ) { Con_Printf( "%s:%f ", field->name, FIELD_FLOAT( to ) ); } #endif } } #ifdef MSG_SHOWNET if( dump ) { Con_Printf( " (%i bits)\n", msg->bit - startbits ); } #endif return true; } #endif /* ============ MSG_WriteDeltaEntity If 'force' parm is false, this won't result any bits emitted if entity didn't changed at all 'from' == NULL --> nodelta update 'to' == NULL --> entity removed ============ */ #ifndef CLIENTONLY void MSGQ3_WriteDeltaEntity(sizebuf_t *msg, const q3entityState_t *from, const q3entityState_t *to, qboolean force) { const field_t *field; int to_value; int to_integer; float to_float; int maxFieldNum; int i; if(!to) { if(from) { MSG_WriteBits(msg, from->number, GENTITYNUM_BITS); MSG_WriteBits(msg, 1, 1); } return; // removed } if(to->number < 0 || to->number > MAX_GENTITIES) SV_Error("MSG_WriteDeltaEntity: Bad entity number: %i", to->number); if(!from) from = &nullEntityState; // nodelta update // // find last modified field in table // maxFieldNum = 0; for(i=0, field=esFieldTable; inumber, GENTITYNUM_BITS); MSG_WriteBits(msg, 0, 1); MSG_WriteBits(msg, 0, 1); return; // unchanged } MSG_WriteBits(msg, to->number, GENTITYNUM_BITS); MSG_WriteBits(msg, 0, 1); MSG_WriteBits(msg, 1, 1); MSG_WriteBits(msg, maxFieldNum, 8); // // write all modified fields // for(i=0, field=esFieldTable; ibits) { MSG_WriteBits(msg, to_value, field->bits); continue; // integer value } // // figure out how to pack float value // to_float = FIELD_FLOAT(to); to_integer = (int)to_float; #ifdef MSG_PROFILING msg_vectorsEmitted++; #endif // MSG_PROFILING if((float)to_integer == to_float && to_integer + MAX_SNAPPED/2 >= 0 && to_integer + MAX_SNAPPED/2 < MAX_SNAPPED) { MSG_WriteBits(msg, 0, 1 ); // pack in 13 bits MSG_WriteBits(msg, to_integer + MAX_SNAPPED/2, SNAPPED_BITS); #ifdef MSG_PROFILING msg_vectorsCompressed++; #endif // MSG_PROFILING } else { MSG_WriteBits(msg, 1, 1 ); // pack in 32 bits MSG_WriteBits(msg, to_value, 32); } } } #endif ///////////////////////////////////////////////////// //player state // // playerState_t // static const field_t psFieldTable[] = { PS_FIELD( commandTime, 32 ), PS_FIELD( origin[0], 0 ), PS_FIELD( origin[1], 0 ), PS_FIELD( bobCycle, 8 ), PS_FIELD( velocity[0], 0 ), PS_FIELD( velocity[1], 0 ), PS_FIELD( viewangles[1], 0 ), PS_FIELD( viewangles[0], 0 ), PS_FIELD( weaponTime, -16 ), PS_FIELD( origin[2], 0 ), PS_FIELD( velocity[2], 0 ), PS_FIELD( legsTimer, 8 ), PS_FIELD( pm_time, -16 ), PS_FIELD( eventSequence, 16 ), PS_FIELD( torsoAnim, 8 ), PS_FIELD( movementDir, 4 ), PS_FIELD( events[0], 8 ), PS_FIELD( legsAnim, 8 ), PS_FIELD( events[1], 8 ), PS_FIELD( pm_flags, 16 ), PS_FIELD( groundEntityNum, 10 ), PS_FIELD( weaponstate, 4 ), PS_FIELD( eFlags, 16 ), PS_FIELD( externalEvent, 10 ), PS_FIELD( gravity, 16 ), PS_FIELD( speed, 16 ), PS_FIELD( delta_angles[1], 16 ), PS_FIELD( externalEventParm, 8 ), PS_FIELD( viewheight, -8 ), PS_FIELD( damageEvent, 8 ), PS_FIELD( damageYaw, 8 ), PS_FIELD( damagePitch, 8 ), PS_FIELD( damageCount, 8 ), PS_FIELD( generic1, 8 ), PS_FIELD( pm_type, 8 ), PS_FIELD( delta_angles[0], 16 ), PS_FIELD( delta_angles[2], 16 ), PS_FIELD( torsoTimer, 12 ), PS_FIELD( eventParms[0], 8 ), PS_FIELD( eventParms[1], 8 ), PS_FIELD( clientNum, 8 ), PS_FIELD( weapon, 5 ), PS_FIELD( viewangles[2], 0 ), PS_FIELD( grapplePoint[0], 0 ), PS_FIELD( grapplePoint[1], 0 ), PS_FIELD( grapplePoint[2], 0 ), PS_FIELD( jumppad_ent, 10 ), PS_FIELD( loopSound, 16 ) }; static const int psTableSize = sizeof( psFieldTable ) / sizeof( psFieldTable[0] ); q3playerState_t nullPlayerState; /* ============ MSG_WriteDeltaPlayerstate 'from' == NULL --> nodelta update 'to' == NULL --> do nothing ============ */ #ifndef CLIENTONLY void MSGQ3_WriteDeltaPlayerstate(sizebuf_t *msg, const q3playerState_t *from, const q3playerState_t *to) { const field_t *field; int to_value; float to_float; int to_integer; int maxFieldNum; int statsMask; int persistantMask; int ammoMask; int powerupsMask; int i; if(!to) { return; } if(!from) { from = &nullPlayerState; // nodelta update } // // find last modified field in table // maxFieldNum = 0; for(i=0, field=psFieldTable ; ibits ) { MSG_WriteBits( msg, to_value, field->bits ); continue; // integer value } // // figure out how to pack float value // to_float = FIELD_FLOAT( to ); to_integer = (int)to_float; #ifdef MSG_PROFILING msg_vectorsEmitted++; #endif // MSG_PROFILING if( (float)to_integer == to_float && to_integer + MAX_SNAPPED/2 >= 0 && to_integer + MAX_SNAPPED/2 < MAX_SNAPPED ) { MSG_WriteBits( msg, 0, 1 ); // pack in 13 bits MSG_WriteBits( msg, to_integer + MAX_SNAPPED/2, SNAPPED_BITS ); #ifdef MSG_PROFILING msg_vectorsCompressed++; #endif // MSG_PROFILING } else { MSG_WriteBits(msg, 1, 1); // pack in 32 bits MSG_WriteBits(msg, to_value, 32); } } // // find modified arrays // statsMask = 0; for(i=0; istats[i] != to->stats[i]) statsMask |= (1 << i); } persistantMask = 0; for(i=0 ; ipersistant[i] != to->persistant[i]) persistantMask |= (1 << i); } ammoMask = 0; for(i=0 ; iammo[i] != to->ammo[i]) ammoMask |= (1 << i); } powerupsMask = 0; for( i=0 ; ipowerups[i] != to->powerups[i]) powerupsMask |= (1 << i); } if(!statsMask && !persistantMask && !ammoMask && !powerupsMask) { MSG_WriteBits(msg, 0, 1); return; // no arrays modified } // // write all modified arrays // MSG_WriteBits(msg, 1, 1); // PS_STATS if(statsMask) { MSG_WriteBits(msg, 1, 1); MSG_WriteBits(msg, statsMask, 16); for(i=0; istats[i], -16); } else MSG_WriteBits(msg, 0, 1); // unchanged // PS_PERSISTANT if(persistantMask) { MSG_WriteBits(msg, 1, 1); MSG_WriteBits(msg, persistantMask, 16); for(i=0; ipersistant[i], -16); } else MSG_WriteBits(msg, 0, 1); // unchanged // PS_AMMO if( ammoMask ) { MSG_WriteBits(msg, 1, 1); MSG_WriteBits(msg, ammoMask, 16); for(i=0; iammo[i], 16); } else MSG_WriteBits(msg, 0, 1); // unchanged // PS_POWERUPS if(powerupsMask) { MSG_WriteBits(msg, 1, 1); MSG_WriteBits(msg, powerupsMask, 16); for(i=0; ipowerups[i], 32); // WARNING: powerups use 32 bits, not 16 } } else MSG_WriteBits( msg, 0, 1 ); // unchanged } #endif #ifndef SERVERONLY void MSG_Q3_ReadDeltaPlayerstate( const q3playerState_t *from, q3playerState_t *to ) { const field_t *field; int to_integer; int maxFieldNum; int bitmask; #ifdef MSG_SHOWNET int startbits; qboolean dump; qboolean moredump; #endif int i; if( !to ) { return; } #ifdef MSG_SHOWNET dump = (qboolean)(cl_shownet->integer >= 2); moredump = (qboolean)(cl_shownet->integer >= 4); if( dump ) { startbits = msg->bit; Com_Printf( "%3i: playerstate ", msg->readcount ); } #endif if( !from ) { memset( to, 0, sizeof( *to ) ); } else { memcpy( to, from, sizeof( *to ) ); } maxFieldNum = MSG_ReadByte(); if( maxFieldNum > psTableSize ) { Host_EndGame( "MSG_ReadDeltaPlayerstate: maxFieldNum > psTableSize" ); } for( i=0, field=psFieldTable ; ibits ) { to_integer = MSG_ReadBits(field->bits); FIELD_INTEGER( to ) = to_integer; #ifdef MSG_SHOWNET if( dump ) { Com_Printf( "%s:%i ", field->name, to_integer ); } #endif continue; // integer value } if(!MSG_ReadBits(1)) { to_integer = MSG_ReadBits(13) - 0x1000; FIELD_FLOAT( to ) = (float)to_integer; #ifdef MSG_SHOWNET if( dump ) { Com_Printf( "%s:%i ", field->name, to_integer ); } #endif } else { FIELD_INTEGER( to ) = MSG_ReadLong(); #ifdef MSG_SHOWNET if( dump ) { Com_Printf( "%s:%f ", field->name, FIELD_FLOAT( to ) ); } #endif } } if( MSG_ReadBits(1) ) { // PS_STATS if( MSG_ReadBits(1) ) { #ifdef MSG_SHOWNET if( moredump ) { Com_Printf( "PS_STATS " ); } #endif bitmask = MSG_ReadBits(16); for( i=0 ; istats[i] = (signed short)MSG_ReadBits(-16); } } } // PS_PERSISTANT if( MSG_ReadBits(1 ) ) { #ifdef MSG_SHOWNET if( moredump ) { Com_Printf( "PS_PERSISTANT " ); } #endif bitmask = MSG_ReadBits(16); for( i=0 ; ipersistant[i] = (signed short)MSG_ReadBits(-16); } } } // PS_AMMO if( MSG_ReadBits(1) ) { #ifdef MSG_SHOWNET if( moredump ) { Com_Printf( "PS_AMMO " ); } #endif bitmask = MSG_ReadBits(16); for( i=0 ; iammo[i] = (signed short)MSG_ReadBits(16); } } } // PS_POWERUPS if( MSG_ReadBits(1) ) { #ifdef MSG_SHOWNET if( moredump ) { Com_Printf( "PS_POWERUPS " ); } #endif bitmask = MSG_ReadBits(16); for( i=0 ; ipowerups[i] = MSG_ReadLong(); } } } } #ifdef MSG_SHOWNET if( dump ) { Com_Printf( " (%i bits)\n", msg->bit - startbits ); } #endif } #endif //////////////////////////////////////////////////////////// //user commands int kbitmask[] = { 0, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F, 0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF, 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF, 0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFf, 0x003FFFFF, 0x007FFFFF, 0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF, }; static int MSG_ReadDeltaKey(int key, int from, int bits) { if (MSG_ReadBits(1)) return MSG_ReadBits(bits) ^ (key & kbitmask[bits]); else return from; } void MSG_Q3_ReadDeltaUsercmd(int key, const usercmd_t *from, usercmd_t *to) { if (MSG_ReadBits(1)) to->servertime = MSG_ReadBits(8) + from->servertime; else to->servertime = MSG_ReadBits(32); if ((unsigned int)(to->servertime - from->servertime) > 255) { Con_DPrintf("msecs clamped\n"); to->msec = 255; } else to->msec = to->servertime - from->servertime; if (!MSG_ReadBits(1)) { to->angles[0] = from->angles[0]; to->angles[1] = from->angles[1]; to->angles[2] = from->angles[2]; to->forwardmove = from->forwardmove; to->sidemove = from->sidemove; to->upmove = from->upmove; to->buttons = from->buttons; to->weapon = from->weapon; } else { key ^= to->servertime; to->angles[0] = MSG_ReadDeltaKey(key, from->angles[0], 16); to->angles[1] = MSG_ReadDeltaKey(key, from->angles[1], 16); to->angles[2] = MSG_ReadDeltaKey(key, from->angles[2], 16); //yeah, this is messy to->forwardmove = (signed char)(unsigned char)MSG_ReadDeltaKey(key, (unsigned char)(signed char)from->forwardmove, 8); to->sidemove = (signed char)(unsigned char)MSG_ReadDeltaKey(key, (unsigned char)(signed char)from->sidemove, 8); to->upmove = (signed char)(unsigned char)MSG_ReadDeltaKey(key, (unsigned char)(signed char)from->upmove, 8); to->buttons = MSG_ReadDeltaKey(key, from->buttons, 16); to->weapon = MSG_ReadDeltaKey(key, from->weapon, 8); } } #endif