mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-12-15 23:21:46 +00:00
a732687548
- Removed #pragma warnings from cmdlib.h and fixed the places where they were still triggered. These #pragmas were responsible for >90% of the GCC warnings that were not listed in VC++. - Fixed one bug in the process: DSeqNode::m_Atten was never adjusted when the parameter handling of the sound functions for attenuation was changed. Changed m_Atten to a float and fixed the SNDSEQ parser to set proper values. Also added the option to specify attenuation with direct values in addition to the predefined names. SVN r1583 (trunk)
504 lines
11 KiB
C++
504 lines
11 KiB
C++
/*
|
|
** d_protocol.cpp
|
|
** Basic network packet creation routines and simple IFF parsing
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 1998-2006 Randy Heit
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include "i_system.h"
|
|
#include "d_ticcmd.h"
|
|
#include "d_net.h"
|
|
#include "doomdef.h"
|
|
#include "doomstat.h"
|
|
#include "cmdlib.h"
|
|
#include "farchive.h"
|
|
|
|
|
|
char *ReadString (BYTE **stream)
|
|
{
|
|
char *string = *((char **)stream);
|
|
|
|
*stream += strlen (string) + 1;
|
|
return copystring (string);
|
|
}
|
|
|
|
const char *ReadStringConst(BYTE **stream)
|
|
{
|
|
const char *string = *((const char **)stream);
|
|
*stream += strlen (string) + 1;
|
|
return string;
|
|
}
|
|
|
|
int ReadByte (BYTE **stream)
|
|
{
|
|
BYTE v = **stream;
|
|
*stream += 1;
|
|
return v;
|
|
}
|
|
|
|
int ReadWord (BYTE **stream)
|
|
{
|
|
short v = (((*stream)[0]) << 8) | (((*stream)[1]));
|
|
*stream += 2;
|
|
return v;
|
|
}
|
|
|
|
int ReadLong (BYTE **stream)
|
|
{
|
|
int v = (((*stream)[0]) << 24) | (((*stream)[1]) << 16) | (((*stream)[2]) << 8) | (((*stream)[3]));
|
|
*stream += 4;
|
|
return v;
|
|
}
|
|
|
|
float ReadFloat (BYTE **stream)
|
|
{
|
|
union
|
|
{
|
|
int i;
|
|
float f;
|
|
} fakeint;
|
|
fakeint.i = ReadLong (stream);
|
|
return fakeint.f;
|
|
}
|
|
|
|
void WriteString (const char *string, BYTE **stream)
|
|
{
|
|
char *p = *((char **)stream);
|
|
|
|
while (*string) {
|
|
*p++ = *string++;
|
|
}
|
|
|
|
*p++ = 0;
|
|
*stream = (BYTE *)p;
|
|
}
|
|
|
|
|
|
void WriteByte (BYTE v, BYTE **stream)
|
|
{
|
|
**stream = v;
|
|
*stream += 1;
|
|
}
|
|
|
|
void WriteWord (short v, BYTE **stream)
|
|
{
|
|
(*stream)[0] = v >> 8;
|
|
(*stream)[1] = v & 255;
|
|
*stream += 2;
|
|
}
|
|
|
|
void WriteLong (int v, BYTE **stream)
|
|
{
|
|
(*stream)[0] = v >> 24;
|
|
(*stream)[1] = (v >> 16) & 255;
|
|
(*stream)[2] = (v >> 8) & 255;
|
|
(*stream)[3] = v & 255;
|
|
*stream += 4;
|
|
}
|
|
|
|
void WriteFloat (float v, BYTE **stream)
|
|
{
|
|
union
|
|
{
|
|
int i;
|
|
float f;
|
|
} fakeint;
|
|
fakeint.f = v;
|
|
WriteLong (fakeint.i, stream);
|
|
}
|
|
|
|
// Returns the number of bytes read
|
|
int UnpackUserCmd (usercmd_t *ucmd, const usercmd_t *basis, BYTE **stream)
|
|
{
|
|
BYTE *start = *stream;
|
|
BYTE flags;
|
|
|
|
if (basis != NULL)
|
|
{
|
|
if (basis != ucmd)
|
|
{
|
|
memcpy (ucmd, basis, sizeof(usercmd_t));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
memset (ucmd, 0, sizeof(usercmd_t));
|
|
}
|
|
|
|
flags = ReadByte (stream);
|
|
|
|
if (flags)
|
|
{
|
|
// We can support up to 29 buttons, using from 0 to 4 bytes to store them.
|
|
if (flags & UCMDF_BUTTONS)
|
|
{
|
|
DWORD buttons = ucmd->buttons;
|
|
BYTE in = ReadByte(stream);
|
|
|
|
buttons = (buttons & ~0x7F) | (in & 0x7F);
|
|
if (in & 0x80)
|
|
{
|
|
in = ReadByte(stream);
|
|
buttons = (buttons & ~(0x7F << 7)) | ((in & 0x7F) << 7);
|
|
if (in & 0x80)
|
|
{
|
|
in = ReadByte(stream);
|
|
buttons = (buttons & ~(0x7F << 14)) | ((in & 0x7F) << 14);
|
|
if (in & 0x80)
|
|
{
|
|
in = ReadByte(stream);
|
|
buttons = (buttons & ~(0xFF << 21)) | (in << 21);
|
|
}
|
|
}
|
|
}
|
|
ucmd->buttons = buttons;
|
|
}
|
|
if (flags & UCMDF_PITCH)
|
|
ucmd->pitch = ReadWord (stream);
|
|
if (flags & UCMDF_YAW)
|
|
ucmd->yaw = ReadWord (stream);
|
|
if (flags & UCMDF_FORWARDMOVE)
|
|
ucmd->forwardmove = ReadWord (stream);
|
|
if (flags & UCMDF_SIDEMOVE)
|
|
ucmd->sidemove = ReadWord (stream);
|
|
if (flags & UCMDF_UPMOVE)
|
|
ucmd->upmove = ReadWord (stream);
|
|
if (flags & UCMDF_ROLL)
|
|
ucmd->roll = ReadWord (stream);
|
|
}
|
|
|
|
return int(*stream - start);
|
|
}
|
|
|
|
// Returns the number of bytes written
|
|
int PackUserCmd (const usercmd_t *ucmd, const usercmd_t *basis, BYTE **stream)
|
|
{
|
|
BYTE flags = 0;
|
|
BYTE *temp = *stream;
|
|
BYTE *start = *stream;
|
|
usercmd_t blank;
|
|
DWORD buttons_changed;
|
|
|
|
if (basis == NULL)
|
|
{
|
|
memset (&blank, 0, sizeof(blank));
|
|
basis = ␣
|
|
}
|
|
|
|
WriteByte (0, stream); // Make room for the packing bits
|
|
|
|
buttons_changed = ucmd->buttons ^ basis->buttons;
|
|
if (buttons_changed != 0)
|
|
{
|
|
BYTE bytes[4] = { ucmd->buttons & 0x7F,
|
|
(ucmd->buttons >> 7) & 0x7F,
|
|
(ucmd->buttons >> 14) & 0x7F,
|
|
(ucmd->buttons >> 21) & 0xFF };
|
|
|
|
flags |= UCMDF_BUTTONS;
|
|
|
|
if (buttons_changed & 0xFFFFFF80)
|
|
{
|
|
bytes[0] |= 0x80;
|
|
if (buttons_changed & 0xFFFFC000)
|
|
{
|
|
bytes[1] |= 0x80;
|
|
if (buttons_changed & 0xFFE00000)
|
|
{
|
|
bytes[2] |= 0x80;
|
|
}
|
|
}
|
|
}
|
|
WriteByte (bytes[0], stream);
|
|
if (bytes[0] & 0x80)
|
|
{
|
|
WriteByte (bytes[1], stream);
|
|
if (bytes[1] & 0x80)
|
|
{
|
|
WriteByte (bytes[2], stream);
|
|
if (bytes[2] & 0x80)
|
|
{
|
|
WriteByte (bytes[3], stream);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (ucmd->pitch != basis->pitch)
|
|
{
|
|
flags |= UCMDF_PITCH;
|
|
WriteWord (ucmd->pitch, stream);
|
|
}
|
|
if (ucmd->yaw != basis->yaw)
|
|
{
|
|
flags |= UCMDF_YAW;
|
|
WriteWord (ucmd->yaw, stream);
|
|
}
|
|
if (ucmd->forwardmove != basis->forwardmove)
|
|
{
|
|
flags |= UCMDF_FORWARDMOVE;
|
|
WriteWord (ucmd->forwardmove, stream);
|
|
}
|
|
if (ucmd->sidemove != basis->sidemove)
|
|
{
|
|
flags |= UCMDF_SIDEMOVE;
|
|
WriteWord (ucmd->sidemove, stream);
|
|
}
|
|
if (ucmd->upmove != basis->upmove)
|
|
{
|
|
flags |= UCMDF_UPMOVE;
|
|
WriteWord (ucmd->upmove, stream);
|
|
}
|
|
if (ucmd->roll != basis->roll)
|
|
{
|
|
flags |= UCMDF_ROLL;
|
|
WriteWord (ucmd->roll, stream);
|
|
}
|
|
|
|
// Write the packing bits
|
|
WriteByte (flags, &temp);
|
|
|
|
return int(*stream - start);
|
|
}
|
|
|
|
FArchive &operator<< (FArchive &arc, ticcmd_t &cmd)
|
|
{
|
|
return arc << cmd.consistancy << cmd.ucmd;
|
|
}
|
|
|
|
FArchive &operator<< (FArchive &arc, usercmd_t &cmd)
|
|
{
|
|
BYTE bytes[256];
|
|
BYTE *stream = bytes;
|
|
if (arc.IsStoring ())
|
|
{
|
|
BYTE len = PackUserCmd (&cmd, NULL, &stream);
|
|
arc << len;
|
|
arc.Write (bytes, len);
|
|
}
|
|
else
|
|
{
|
|
BYTE len;
|
|
arc << len;
|
|
arc.Read (bytes, len);
|
|
UnpackUserCmd (&cmd, NULL, &stream);
|
|
}
|
|
return arc;
|
|
}
|
|
|
|
int WriteUserCmdMessage (usercmd_t *ucmd, const usercmd_t *basis, BYTE **stream)
|
|
{
|
|
if (basis == NULL)
|
|
{
|
|
if (ucmd->buttons != 0 ||
|
|
ucmd->pitch != 0 ||
|
|
ucmd->yaw != 0 ||
|
|
ucmd->forwardmove != 0 ||
|
|
ucmd->sidemove != 0 ||
|
|
ucmd->upmove != 0 ||
|
|
ucmd->roll != 0)
|
|
{
|
|
WriteByte (DEM_USERCMD, stream);
|
|
return PackUserCmd (ucmd, basis, stream) + 1;
|
|
}
|
|
}
|
|
else
|
|
if (ucmd->buttons != basis->buttons ||
|
|
ucmd->pitch != basis->pitch ||
|
|
ucmd->yaw != basis->yaw ||
|
|
ucmd->forwardmove != basis->forwardmove ||
|
|
ucmd->sidemove != basis->sidemove ||
|
|
ucmd->upmove != basis->upmove ||
|
|
ucmd->roll != basis->roll)
|
|
{
|
|
WriteByte (DEM_USERCMD, stream);
|
|
return PackUserCmd (ucmd, basis, stream) + 1;
|
|
}
|
|
|
|
WriteByte (DEM_EMPTYUSERCMD, stream);
|
|
return 1;
|
|
}
|
|
|
|
|
|
int SkipTicCmd (BYTE **stream, int count)
|
|
{
|
|
int i, skip;
|
|
BYTE *flow = *stream;
|
|
|
|
for (i = count; i > 0; i--)
|
|
{
|
|
bool moreticdata = true;
|
|
|
|
flow += 2; // Skip consistancy marker
|
|
while (moreticdata)
|
|
{
|
|
BYTE type = *flow++;
|
|
|
|
if (type == DEM_USERCMD)
|
|
{
|
|
moreticdata = false;
|
|
skip = 1;
|
|
if (*flow & UCMDF_PITCH) skip += 2;
|
|
if (*flow & UCMDF_YAW) skip += 2;
|
|
if (*flow & UCMDF_FORWARDMOVE) skip += 2;
|
|
if (*flow & UCMDF_SIDEMOVE) skip += 2;
|
|
if (*flow & UCMDF_UPMOVE) skip += 2;
|
|
if (*flow & UCMDF_ROLL) skip += 2;
|
|
if (*flow & UCMDF_BUTTONS)
|
|
{
|
|
if (*++flow & 0x80)
|
|
{
|
|
if (*++flow & 0x80)
|
|
{
|
|
if (*++flow & 0x80)
|
|
{
|
|
++flow;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
flow += skip;
|
|
}
|
|
else if (type == DEM_EMPTYUSERCMD)
|
|
{
|
|
moreticdata = false;
|
|
}
|
|
else
|
|
{
|
|
Net_SkipCommand (type, &flow);
|
|
}
|
|
}
|
|
}
|
|
|
|
skip = int(flow - *stream);
|
|
*stream = flow;
|
|
|
|
return skip;
|
|
}
|
|
|
|
#include <assert.h>
|
|
extern short consistancy[MAXPLAYERS][BACKUPTICS];
|
|
void ReadTicCmd (BYTE **stream, int player, int tic)
|
|
{
|
|
int type;
|
|
BYTE *start;
|
|
ticcmd_t *tcmd;
|
|
|
|
int ticmod = tic % BACKUPTICS;
|
|
|
|
tcmd = &netcmds[player][ticmod];
|
|
tcmd->consistancy = ReadWord (stream);
|
|
|
|
start = *stream;
|
|
|
|
while ((type = ReadByte (stream)) != DEM_USERCMD && type != DEM_EMPTYUSERCMD)
|
|
Net_SkipCommand (type, stream);
|
|
|
|
NetSpecs[player][ticmod].SetData (start, int(*stream - start - 1));
|
|
|
|
if (type == DEM_USERCMD)
|
|
{
|
|
UnpackUserCmd (&tcmd->ucmd,
|
|
tic ? &netcmds[player][(tic-1)%BACKUPTICS].ucmd : NULL, stream);
|
|
}
|
|
else
|
|
{
|
|
if (tic)
|
|
{
|
|
memcpy (&tcmd->ucmd, &netcmds[player][(tic-1)%BACKUPTICS].ucmd, sizeof(tcmd->ucmd));
|
|
}
|
|
else
|
|
{
|
|
memset (&tcmd->ucmd, 0, sizeof(tcmd->ucmd));
|
|
}
|
|
}
|
|
|
|
if (player==consoleplayer&&tic>BACKUPTICS)
|
|
assert(consistancy[player][ticmod] == tcmd->consistancy);
|
|
}
|
|
|
|
void RunNetSpecs (int player, int buf)
|
|
{
|
|
BYTE *stream;
|
|
int len;
|
|
|
|
if (gametic % ticdup == 0)
|
|
{
|
|
stream = NetSpecs[player][buf].GetData (&len);
|
|
if (stream)
|
|
{
|
|
BYTE *end = stream + len;
|
|
while (stream < end)
|
|
{
|
|
int type = ReadByte (&stream);
|
|
Net_DoCommand (type, &stream, player);
|
|
}
|
|
if (!demorecording)
|
|
NetSpecs[player][buf].SetData (NULL, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
BYTE *lenspot;
|
|
|
|
// Write the header of an IFF chunk and leave space
|
|
// for the length field.
|
|
void StartChunk (int id, BYTE **stream)
|
|
{
|
|
WriteLong (id, stream);
|
|
lenspot = *stream;
|
|
*stream += 4;
|
|
}
|
|
|
|
// Write the length field for the chunk and insert
|
|
// pad byte if the chunk is odd-sized.
|
|
void FinishChunk (BYTE **stream)
|
|
{
|
|
int len;
|
|
|
|
if (!lenspot)
|
|
return;
|
|
|
|
len = int(*stream - lenspot - 4);
|
|
WriteLong (len, &lenspot);
|
|
if (len & 1)
|
|
WriteByte (0, stream);
|
|
|
|
lenspot = NULL;
|
|
}
|
|
|
|
// Skip past an unknown chunk. *stream should be
|
|
// pointing to the chunk's length field.
|
|
void SkipChunk (BYTE **stream)
|
|
{
|
|
int len;
|
|
|
|
len = ReadLong (stream);
|
|
stream += len + (len & 1);
|
|
}
|