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fteqw/engine/common/q3common.c
Spoike f4d3df7bf5 make sure the capture command doesn't switch between gamedirs while capturing. 
added dimension_default global to provide default dimensions. expected to be a (var) constant.
support setcustomskin in menuqc.
implement some considerations for win95, so it can actually run on that horrendously outdated system.
provide scr_autoid and r_showbbox-field info when running csqc.
ignore vid_restarts at the end of config.cfg files from other engines. in fte, these are at best redundant and at worst overrides user settings.
fix issue with latched cvars not flagging the config as modified.
path command always shows filenames properly.
fix some fteqcc inlining bugs.
added precaches command to display all active precaches.
added docs for mapcluster.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4881 fc73d0e0-1445-4013-8a0c-d673dee63da5
2015-06-04 06:15:14 +00:00

1745 lines
37 KiB
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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;
size_t insize;
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, &insize);
vm_fopen_files[i].bufferlen = vm_fopen_files[i].len = insize;
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, FS_GAMEONLY, 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;
}
int VM_FWrite (char *dest, int quantity, int fnum, int owner)
{
/*
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;
*/
return 0;
}
void VM_FSeek (int fnum, int offset, int seektype, 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(seektype)
{
case 0:
offset = vm_fopen_files[fnum].ofs + offset;
case 1:
offset = vm_fopen_files[fnum].len + offset;
break;
default:
case 2:
offset = offset;
break;
}
if (offset < 0)
offset = 0;
if (offset > vm_fopen_files[fnum].len)
offset = vm_fopen_files[fnum].len;
vm_fopen_files[fnum].ofs = offset;
}
int VM_FTell (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
return vm_fopen_files[fnum].ofs;
}
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 QDECL VMEnum(const char *match, qofs_t size, time_t mtime, void *args, searchpathfuncs_t *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 QDECL IfFound(const char *match, qofs_t size, time_t modtime, void *args, searchpathfuncs_t *spath)
{
*(qboolean*)args = true;
return true;
}
static int QDECL VMEnumMods(const char *match, qofs_t size, time_t modtime, void *args, searchpathfuncs_t *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. FIXME: should be any basedir, rather than hardcoded.
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_gamepath), "*", VMEnumMods, &vms, NULL);
if (*com_homepath)
Sys_EnumerateFiles((vms.dir=com_homepath), "*", 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(q3vmcvar_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(q3vmcvar_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
============
*/
#ifdef HUFFNETWORK
static void MSG_WriteHuffBits( sizebuf_t *msg, int value, int bits )
{
int remaining;
int i;
value &= 0xFFFFFFFFU >> (32 - bits);
remaining = bits & 7;
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;
}
#endif
/*
============
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;
#ifdef HUFFNETWORK
case SZ_HUFFMAN:
MSG_WriteHuffBits( msg, value, bits );
break;
#endif
}
}
////////////////////////////////////////////////////////////////////////////////
//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_DPrintf( "%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<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
} q3field_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<<SNAPPED_BITS)
//
// entityState_t
//
static const q3field_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 q3field_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 q3field_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 q3field_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 q3field_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 q3field_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[] = {
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
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