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fteqw/engine/common/q3common.c

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#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 = COM_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 = COM_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(char *match, int size, void *args)
{
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(char *match, int size, void *args)
{
*(qboolean*)args = true;
return true;
}
static int VMEnumMods(char *match, int size, void *args)
{
char *check;
char desc[1024];
int newlen;
int desclen;
qboolean foundone;
vfsfile_t *f;
newlen = strlen(match)+1;
if (*match && match[newlen-2] != '/')
return true;
match[newlen-2] = '\0';
newlen--;
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);
if (foundone == false)
return true; //we only count directories with a pk3 file
Q_strncpyz(desc, match, sizeof(desc));
f = FS_OpenVFS(va("%s/description.txt", match), "rb", FS_BASE);
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);
if (*com_homedir)
Sys_EnumerateFiles((vms.dir=com_homedir), "*", VMEnumMods, &vms);
}
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;
cvar_t *c = Cvar_Get(name, defval, 0, "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->value;
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; i<remaining ; i++ )
{
if( !(msg->currentbit & 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();
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_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;
}
}
// 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<length && string[i] ; i++ )
{
key += string[i] * (119 + i);
}
return (key ^ (key >> 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, ((int)&(((q3playerState_t *)0)->n)), b }
# define ES_FIELD(n,b) { #n, ((int)&(((q3entityState_t *)0)->n)), b }
#else
# define PS_FIELD(n,b) { ((int)&(((q3playerState_t *)0)->n)), b }
# define ES_FIELD(n,b) { ((int)&(((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<<SNAPPED_BITS)
//
// entityState_t
//
static const field_t esFieldTable[] = {
ES_FIELD( pos.trTime, 32 ),
ES_FIELD( pos.trBase[0], 0 ),
ES_FIELD( pos.trBase[1], 0 ),
ES_FIELD( pos.trDelta[0], 0 ),
ES_FIELD( pos.trDelta[1], 0 ),
ES_FIELD( pos.trBase[2], 0 ),
ES_FIELD( apos.trBase[1], 0 ),
ES_FIELD( pos.trDelta[2], 0 ),
ES_FIELD( apos.trBase[0], 0 ),
ES_FIELD( event, 10 ),
ES_FIELD( angles2[1], 0 ),
ES_FIELD( eType, 8 ),
ES_FIELD( torsoAnim, 8 ),
ES_FIELD( eventParm, 8 ),
ES_FIELD( legsAnim, 8 ),
ES_FIELD( groundEntityNum, 10 ),
ES_FIELD( pos.trType, 8 ),
ES_FIELD( eFlags, 19 ),
ES_FIELD( otherEntityNum, 10 ),
ES_FIELD( weapon, 8 ),
ES_FIELD( clientNum, 8 ),
ES_FIELD( angles[1], 0 ),
ES_FIELD( pos.trDuration, 32 ),
ES_FIELD( apos.trType, 8 ),
ES_FIELD( origin[0], 0 ),
ES_FIELD( origin[1], 0 ),
ES_FIELD( origin[2], 0 ),
ES_FIELD( solid, 24 ),
ES_FIELD( powerups, 16 ),
ES_FIELD( modelindex, 8 ),
ES_FIELD( otherEntityNum2, 10 ),
ES_FIELD( loopSound, 8 ),
ES_FIELD( generic1, 8 ),
ES_FIELD( origin2[2], 0 ),
ES_FIELD( origin2[0], 0 ),
ES_FIELD( origin2[1], 0 ),
ES_FIELD( modelindex2, 8 ),
ES_FIELD( angles[0], 0 ),
ES_FIELD( time, 32 ),
ES_FIELD( apos.trTime, 32 ),
ES_FIELD( apos.trDuration, 32 ),
ES_FIELD( apos.trBase[2], 0 ),
ES_FIELD( apos.trDelta[0], 0 ),
ES_FIELD( apos.trDelta[1], 0 ),
ES_FIELD( apos.trDelta[2], 0 ),
ES_FIELD( time2, 32 ),
ES_FIELD( angles[2], 0 ),
ES_FIELD( angles2[0], 0 ),
ES_FIELD( angles2[2], 0 ),
ES_FIELD( constantLight, 32 ),
ES_FIELD( frame, 16 )
};
static const int esTableSize = sizeof( esFieldTable ) / sizeof( esFieldTable[0] );
q3entityState_t nullEntityState;
/*
============
MSG_ReadDeltaEntity
'from' == NULL --> 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 ; i<maxFieldNum ; i++, field++ )
{
if( !MSG_ReadBits( 1 ) )
continue; // field unchanged
if( !MSG_ReadBits( 1 ) )
{
FIELD_INTEGER( to ) = 0;
#ifdef MSG_SHOWNET
if( dump )
{
Con_Printf( "%s:%i ", field->name, 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; i<esTableSize; i++, field++ )
{
if( FIELD_INTEGER( from ) != FIELD_INTEGER(to))
maxFieldNum = i + 1;
}
if(!maxFieldNum)
{
if(!force)
return; // don't emit any bits at all
MSG_WriteBits(msg, to->number, 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; i<maxFieldNum ; i++, field++)
{
to_value = FIELD_INTEGER(to);
if(FIELD_INTEGER(from) == to_value)
{
MSG_WriteBits( msg, 0, 1 );
continue; // field unchanged
}
MSG_WriteBits(msg, 1, 1);
if(!to_value)
{
MSG_WriteBits(msg, 0, 1);
continue; // field set to zero
}
MSG_WriteBits(msg, 1, 1);
if(field->bits)
{
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 ; i<psTableSize ; i++, field++)
{
if(FIELD_INTEGER(from) != FIELD_INTEGER(to))
{
maxFieldNum = i + 1;
}
}
MSG_WriteBits(msg, maxFieldNum, 8);
//
// write all modified fields
//
for( i=0, field=psFieldTable ; i<maxFieldNum ; i++, field++ )
{
to_value = FIELD_INTEGER( to );
if( FIELD_INTEGER( from ) == to_value )
{
MSG_WriteBits( msg, 0, 1 );
continue; // field unchanged
}
MSG_WriteBits( msg, 1, 1 );
if( field->bits )
{
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; i<MAX_Q3_STATS; i++)
{
if(from->stats[i] != to->stats[i])
statsMask |= (1 << i);
}
persistantMask = 0;
for(i=0 ; i<MAX_Q3_PERSISTANT ; i++)
{
if(from->persistant[i] != to->persistant[i])
persistantMask |= (1 << i);
}
ammoMask = 0;
for(i=0 ; i<MAX_Q3_WEAPONS ; i++ )
{
if(from->ammo[i] != to->ammo[i])
ammoMask |= (1 << i);
}
powerupsMask = 0;
for( i=0 ; i<MAX_Q3_POWERUPS ; i++ )
{
if(from->powerups[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; i<MAX_Q3_STATS; i++)
if(statsMask & (1 << i))
MSG_WriteBits(msg, to->stats[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; i<MAX_Q3_PERSISTANT; i++)
if(persistantMask & (1 << i))
MSG_WriteBits(msg, to->persistant[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; i<MAX_Q3_WEAPONS; i++)
if(ammoMask & (1 << i))
MSG_WriteBits(msg, to->ammo[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; i<MAX_Q3_POWERUPS; i++)
{
if(powerupsMask & (1 << i))
MSG_WriteBits(msg, to->powerups[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 ; i<maxFieldNum ; i++, field++ )
{
if(!MSG_ReadBits(1))
{
continue; // field unchanged
}
if( field->bits )
{
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 ; i<MAX_Q3_STATS ; i++ )
{
if( bitmask & (1 << i) )
{
to->stats[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 ; i<MAX_Q3_PERSISTANT ; i++ )
{
if( bitmask & (1 << i) )
{
to->persistant[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 ; i<MAX_Q3_WEAPONS ; i++ )
{
if( bitmask & (1 << i) )
{
to->ammo[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 ; i<MAX_Q3_POWERUPS ; i++ )
{
if( bitmask & (1 << i) )
{
to->powerups[i] = MSG_ReadLong();
}
}
}
}
#ifdef MSG_SHOWNET
if( dump )
{
Com_Printf( " (%i bits)\n", msg->bit - startbits );
}
#endif
}
#endif
////////////////////////////////////////////////////////////
//user commands
int kbitmask[32] = {
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 (!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);
to->forwardmove = MSG_ReadDeltaKey(key, from->forwardmove, 8);
to->sidemove = MSG_ReadDeltaKey(key, from->sidemove, 8);
to->upmove = MSG_ReadDeltaKey(key, from->upmove, 8);
to->buttons = MSG_ReadDeltaKey(key, from->buttons, 16);
to->weapon = MSG_ReadDeltaKey(key, from->weapon, 8);
}
}
#endif
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