Xash3D FWGS engine.
 
 
 
 

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/*
cl_demo.c - demo record & playback
Copyright (C) 2007 Uncle Mike
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include "common.h"
#include "client.h"
#include "gl_local.h"
#include "net_encode.h"
#define dem_unknown 0 // unknown command
#define dem_norewind 1 // startup message
#define dem_read 2 // it's a normal network packet
#define dem_jumptime 3 // move the demostart time value forward by this amount
#define dem_userdata 4 // userdata from the client.dll
#define dem_usercmd 5 // read usercmd_t
#define dem_stop 6 // end of time
#define dem_lastcmd dem_stop
#define DEMO_STARTUP 0 // this lump contains startup info needed to spawn into the server
#define DEMO_NORMAL 1 // this lump contains playback info of messages, etc., needed during playback.
// Demo flags
#define FDEMO_TITLE 0x01 // Show title
#define FDEMO_PLAY 0x04 // Playing cd track
#define FDEMO_FADE_IN_SLOW 0x08 // Fade in (slow)
#define FDEMO_FADE_IN_FAST 0x10 // Fade in (fast)
#define FDEMO_FADE_OUT_SLOW 0x20 // Fade out (slow)
#define FDEMO_FADE_OUT_FAST 0x40 // Fade out (fast)
#define IDEMOHEADER (('M'<<24)+('E'<<16)+('D'<<8)+'I') // little-endian "IDEM"
#define DEMO_PROTOCOL 3
const char *demo_cmd[dem_lastcmd+1] =
{
"dem_unknown",
"dem_norewind",
"dem_read",
"dem_jumptime",
"dem_userdata",
"dem_usercmd",
"dem_stop",
};
typedef struct
{
int id; // should be IDEM
int dem_protocol; // should be DEMO_PROTOCOL
int net_protocol; // should be PROTOCOL_VERSION
double host_fps; // fps for demo playing
char mapname[64]; // name of map
char comment[64]; // comment for demo
char gamedir[64]; // name of game directory (FS_Gamedir())
int directory_offset; // offset of Entry Directory.
} demoheader_t;
typedef struct
{
int entrytype; // DEMO_STARTUP or DEMO_NORMAL
float playback_time; // time of track
int playback_frames; // # of frames in track
int offset; // file offset of track data
int length; // length of track
int flags; // FX-flags
char description[64]; // entry description
} demoentry_t;
typedef struct
{
demoentry_t *entries; // track entry info
int numentries; // number of tracks
} demodirectory_t;
// add angles
typedef struct
{
float starttime;
vec3_t viewangles;
} demoangle_t;
// private demo states
struct
{
demoheader_t header;
demoentry_t *entry;
demodirectory_t directory;
int framecount;
float starttime;
float realstarttime;
float timestamp;
float lasttime;
int entryIndex;
// interpolation stuff
demoangle_t cmds[ANGLE_BACKUP];
int angle_position;
} demo;
/*
====================
CL_StartupDemoHeader
spooling demo header in case
we record a demo on this level
====================
*/
void CL_StartupDemoHeader( void )
{
if( cls.demoheader )
{
FS_Close( cls.demoheader );
}
// Note: this is replacing tmpfile()
cls.demoheader = FS_Open( "demoheader.tmp", "w+b", true );
if( !cls.demoheader )
{
Con_DPrintf( S_ERROR "couldn't open temporary header file.\n" );
return;
}
Con_Printf( "Spooling demo header.\n" );
}
/*
====================
CL_CloseDemoHeader
close demoheader file on engine shutdown
====================
*/
void CL_CloseDemoHeader( void )
{
if( !cls.demoheader )
return;
FS_Close( cls.demoheader );
}
/*
====================
CL_GetDemoRecordClock
write time while demo is recording
====================
*/
float CL_GetDemoRecordClock( void )
{
return cl.mtime[0];
}
/*
====================
CL_GetDemoPlaybackClock
overwrite host.realtime
====================
*/
float CL_GetDemoPlaybackClock( void )
{
return host.realtime + host.frametime;
}
/*
====================
CL_GetDemoFramerate
overwrite host.frametime
====================
*/
double CL_GetDemoFramerate( void )
{
if( cls.timedemo )
return 0.0;
return bound( MIN_FPS, demo.header.host_fps, MAX_FPS );
}
/*
====================
CL_WriteDemoCmdHeader
Writes the demo command header and time-delta
====================
*/
void CL_WriteDemoCmdHeader( byte cmd, file_t *file )
{
float dt;
Assert( cmd >= 1 && cmd <= dem_lastcmd );
if( !file ) return;
// command
FS_Write( file, &cmd, sizeof( byte ));
// time offset
dt = (float)(CL_GetDemoRecordClock() - demo.starttime);
FS_Write( file, &dt, sizeof( float ));
}
/*
====================
CL_WriteDemoJumpTime
Update level time on a next level
====================
*/
void CL_WriteDemoJumpTime( void )
{
if( cls.demowaiting || !cls.demofile )
return;
demo.starttime = CL_GetDemoRecordClock(); // setup the demo starttime
// demo playback should read this as an incoming message.
// write the client's realtime value out so we can synchronize the reads.
CL_WriteDemoCmdHeader( dem_jumptime, cls.demofile );
}
/*
====================
CL_WriteDemoUserCmd
Writes the current user cmd
====================
*/
void CL_WriteDemoUserCmd( int cmdnumber )
{
sizebuf_t buf;
word bytes;
byte data[1024];
if( !cls.demorecording || !cls.demofile )
return;
CL_WriteDemoCmdHeader( dem_usercmd, cls.demofile );
FS_Write( cls.demofile, &cls.netchan.outgoing_sequence, sizeof( int ));
FS_Write( cls.demofile, &cmdnumber, sizeof( int ));
// write usercmd_t
MSG_Init( &buf, "UserCmd", data, sizeof( data ));
CL_WriteUsercmd( &buf, -1, cmdnumber ); // always no delta
bytes = MSG_GetNumBytesWritten( &buf );
FS_Write( cls.demofile, &bytes, sizeof( word ));
FS_Write( cls.demofile, data, bytes );
}
/*
====================
CL_WriteDemoSequence
Save state of cls.netchan sequences
so that we can play the demo correctly.
====================
*/
void CL_WriteDemoSequence( file_t *file )
{
Assert( file != NULL );
FS_Write( file, &cls.netchan.incoming_sequence, sizeof( int ));
FS_Write( file, &cls.netchan.incoming_acknowledged, sizeof( int ));
FS_Write( file, &cls.netchan.incoming_reliable_acknowledged, sizeof( int ));
FS_Write( file, &cls.netchan.incoming_reliable_sequence, sizeof( int ));
FS_Write( file, &cls.netchan.outgoing_sequence, sizeof( int ));
FS_Write( file, &cls.netchan.reliable_sequence, sizeof( int ));
FS_Write( file, &cls.netchan.last_reliable_sequence, sizeof( int ));
}
/*
====================
CL_WriteDemoMessage
Dumps the current net message, prefixed by the length
====================
*/
void CL_WriteDemoMessage( qboolean startup, int start, sizebuf_t *msg )
{
file_t *file = startup ? cls.demoheader : cls.demofile;
int swlen;
byte c;
if( !file ) return;
// past the start but not recording a demo.
if( !startup && !cls.demorecording )
return;
swlen = MSG_GetNumBytesWritten( msg ) - start;
if( swlen <= 0 ) return;
if( !startup ) demo.framecount++;
// demo playback should read this as an incoming message.
c = (cls.state != ca_active) ? dem_norewind : dem_read;
CL_WriteDemoCmdHeader( c, file );
CL_WriteDemoSequence( file );
// write the length out.
FS_Write( file, &swlen, sizeof( int ));
// output the buffer. Skip the network packet stuff.
FS_Write( file, MSG_GetData( msg ) + start, swlen );
}
/*
====================
CL_WriteDemoUserMessage
Dumps the user message (demoaction)
====================
*/
void CL_WriteDemoUserMessage( const byte *buffer, size_t size )
{
if( !cls.demorecording || cls.demowaiting )
return;
if( !cls.demofile || !buffer || size <= 0 )
return;
CL_WriteDemoCmdHeader( dem_userdata, cls.demofile );
// write the length out.
FS_Write( cls.demofile, &size, sizeof( int ));
// output the buffer.
FS_Write( cls.demofile, buffer, size );
}
/*
====================
CL_WriteDemoHeader
Write demo header
====================
*/
void CL_WriteDemoHeader( const char *name )
{
int copysize;
int savepos;
int curpos;
Con_Printf( "recording to %s.\n", name );
cls.demofile = FS_Open( name, "wb", false );
cls.demotime = 0.0;
if( !cls.demofile )
{
Con_Printf( S_ERROR "couldn't open %s.\n", name );
return;
}
cls.demorecording = true;
cls.demowaiting = true; // don't start saving messages until a non-delta compressed message is received
memset( &demo.header, 0, sizeof( demo.header ));
demo.header.id = IDEMOHEADER;
demo.header.dem_protocol = DEMO_PROTOCOL;
demo.header.net_protocol = PROTOCOL_VERSION;
demo.header.host_fps = bound( MIN_FPS, host_maxfps->value, MAX_FPS );
Q_strncpy( demo.header.mapname, clgame.mapname, sizeof( demo.header.mapname ));
Q_strncpy( demo.header.comment, clgame.maptitle, sizeof( demo.header.comment ));
Q_strncpy( demo.header.gamedir, FS_Gamedir(), sizeof( demo.header.gamedir ));
// write header
FS_Write( cls.demofile, &demo.header, sizeof( demo.header ));
demo.directory.numentries = 2;
demo.directory.entries = Mem_Calloc( cls.mempool, sizeof( demoentry_t ) * demo.directory.numentries );
// DIRECTORY ENTRY # 0
demo.entry = &demo.directory.entries[0]; // only one here.
demo.entry->entrytype = DEMO_STARTUP;
demo.entry->playback_time = 0.0f; // startup takes 0 time.
demo.entry->offset = FS_Tell( cls.demofile ); // position for this chunk.
// finish off the startup info.
CL_WriteDemoCmdHeader( dem_stop, cls.demoheader );
// now copy the stuff we cached from the server.
copysize = savepos = FS_Tell( cls.demoheader );
FS_Seek( cls.demoheader, 0, SEEK_SET );
FS_FileCopy( cls.demofile, cls.demoheader, copysize );
// jump back to end, in case we record another demo for this session.
FS_Seek( cls.demoheader, savepos, SEEK_SET );
demo.starttime = CL_GetDemoRecordClock(); // setup the demo starttime
demo.realstarttime = demo.starttime;
demo.framecount = 0;
cls.td_startframe = host.framecount;
cls.td_lastframe = -1; // get a new message this frame
// now move on to entry # 1, the first data chunk.
curpos = FS_Tell( cls.demofile );
demo.entry->length = curpos - demo.entry->offset;
// now we are writing the first real lump.
demo.entry = &demo.directory.entries[1]; // first real data lump
demo.entry->entrytype = DEMO_NORMAL;
demo.entry->playback_time = 0.0f; // startup takes 0 time.
demo.entry->offset = FS_Tell( cls.demofile );
// demo playback should read this as an incoming message.
// write the client's realtime value out so we can synchronize the reads.
CL_WriteDemoCmdHeader( dem_jumptime, cls.demofile );
if( clgame.hInstance ) clgame.dllFuncs.pfnReset();
Cbuf_InsertText( "fullupdate\n" );
Cbuf_Execute();
}
/*
=================
CL_StopRecord
finish recording demo
=================
*/
void CL_StopRecord( void )
{
int i, curpos;
float stoptime;
int frames;
if( !cls.demorecording ) return;
// demo playback should read this as an incoming message.
CL_WriteDemoCmdHeader( dem_stop, cls.demofile );
stoptime = CL_GetDemoRecordClock();
if( clgame.hInstance ) clgame.dllFuncs.pfnReset();
curpos = FS_Tell( cls.demofile );
demo.entry->length = curpos - demo.entry->offset;
demo.entry->playback_time = stoptime - demo.realstarttime;
demo.entry->playback_frames = demo.framecount;
// Now write out the directory and free it and touch up the demo header.
FS_Write( cls.demofile, &demo.directory.numentries, sizeof( int ));
for( i = 0; i < demo.directory.numentries; i++ )
FS_Write( cls.demofile, &demo.directory.entries[i], sizeof( demoentry_t ));
Mem_Free( demo.directory.entries );
demo.directory.numentries = 0;
demo.header.directory_offset = curpos;
FS_Seek( cls.demofile, 0, SEEK_SET );
FS_Write( cls.demofile, &demo.header, sizeof( demo.header ));
FS_Close( cls.demofile );
cls.demofile = NULL;
cls.demorecording = false;
cls.demoname[0] = '\0';
cls.td_lastframe = host.framecount;
gameui.globals->demoname[0] = '\0';
demo.header.host_fps = 0.0;
frames = cls.td_lastframe - cls.td_startframe;
Con_Printf( "Completed demo\nRecording time: %02d:%02d, frames %i\n", (int)(cls.demotime / 60.0f), (int)fmod(cls.demotime, 60.0f), frames );
cls.demotime = 0.0;
}
/*
=================
CL_DrawDemoRecording
=================
*/
void CL_DrawDemoRecording( void )
{
char string[64];
rgba_t color = { 255, 255, 255, 255 };
int pos;
int len;
if(!( host_developer.value && cls.demorecording ))
return;
pos = FS_Tell( cls.demofile );
Q_snprintf( string, sizeof( string ), "^1RECORDING:^7 %s: %s time: %02d:%02d", cls.demoname,
Q_memprint( pos ), (int)(cls.demotime / 60.0f ), (int)fmod( cls.demotime, 60.0f ));
Con_DrawStringLen( string, &len, NULL );
Con_DrawString(( glState.width - len ) >> 1, glState.height >> 2, string, color );
}
/*
=======================================================================
CLIENT SIDE DEMO PLAYBACK
=======================================================================
*/
/*
=================
CL_ReadDemoCmdHeader
read the demo command
=================
*/
void CL_ReadDemoCmdHeader( byte *cmd, float *dt )
{
// read the command
FS_Read( cls.demofile, cmd, sizeof( byte ));
Assert( *cmd >= 1 && *cmd <= dem_lastcmd );
// read the timestamp
FS_Read( cls.demofile, dt, sizeof( float ));
}
/*
=================
CL_ReadDemoUserCmd
read the demo usercmd for predicting
and smooth movement during playback the demo
=================
*/
void CL_ReadDemoUserCmd( qboolean discard )
{
byte data[1024];
int cmdnumber;
int outgoing_sequence;
runcmd_t *pcmd;
word bytes;
FS_Read( cls.demofile, &outgoing_sequence, sizeof( int ));
FS_Read( cls.demofile, &cmdnumber, sizeof( int ));
FS_Read( cls.demofile, &bytes, sizeof( short ));
FS_Read( cls.demofile, data, bytes );
if( !discard )
{
usercmd_t nullcmd;
sizebuf_t buf;
demoangle_t *a;
memset( &nullcmd, 0, sizeof( nullcmd ));
MSG_Init( &buf, "UserCmd", data, sizeof( data ));
pcmd = &cl.commands[cmdnumber & CL_UPDATE_MASK];
pcmd->processedfuncs = false;
pcmd->senttime = 0.0f;
pcmd->receivedtime = 0.1f;
pcmd->frame_lerp = 0.1f;
pcmd->heldback = false;
pcmd->sendsize = 1;
// always delta'ing from null
cl.cmd = &pcmd->cmd;
MSG_ReadDeltaUsercmd( &buf, &nullcmd, cl.cmd );
// make sure what interp info contain angles from different frames
// or lerping will stop working
if( demo.lasttime != demo.timestamp )
{
// select entry into circular buffer
demo.angle_position = (demo.angle_position + 1) & ANGLE_MASK;
a = &demo.cmds[demo.angle_position];
// record update
a->starttime = demo.timestamp;
VectorCopy( cl.cmd->viewangles, a->viewangles );
demo.lasttime = demo.timestamp;
}
// NOTE: we need to have the current outgoing sequence correct
// so we can do prediction correctly during playback
cls.netchan.outgoing_sequence = outgoing_sequence;
}
}
/*
=================
CL_ReadDemoSequence
read netchan sequences
=================
*/
void CL_ReadDemoSequence( qboolean discard )
{
int incoming_sequence;
int incoming_acknowledged;
int incoming_reliable_acknowledged;
int incoming_reliable_sequence;
int outgoing_sequence;
int reliable_sequence;
int last_reliable_sequence;
FS_Read( cls.demofile, &incoming_sequence, sizeof( int ));
FS_Read( cls.demofile, &incoming_acknowledged, sizeof( int ));
FS_Read( cls.demofile, &incoming_reliable_acknowledged, sizeof( int ));
FS_Read( cls.demofile, &incoming_reliable_sequence, sizeof( int ));
FS_Read( cls.demofile, &outgoing_sequence, sizeof( int ));
FS_Read( cls.demofile, &reliable_sequence, sizeof( int ));
FS_Read( cls.demofile, &last_reliable_sequence, sizeof( int ));
if( discard ) return;
cls.netchan.incoming_sequence = incoming_sequence;
cls.netchan.incoming_acknowledged = incoming_acknowledged;
cls.netchan.incoming_reliable_acknowledged = incoming_reliable_acknowledged;
cls.netchan.incoming_reliable_sequence = incoming_reliable_sequence;
cls.netchan.outgoing_sequence = outgoing_sequence;
cls.netchan.reliable_sequence = reliable_sequence;
cls.netchan.last_reliable_sequence = last_reliable_sequence;
}
/*
=================
CL_DemoStartPlayback
=================
*/
void CL_DemoStartPlayback( int mode )
{
if( cls.changedemo )
{
S_StopAllSounds( true );
SCR_BeginLoadingPlaque( false );
CL_ClearState ();
CL_InitEdicts (); // re-arrange edicts
}
else
{
// NOTE: at this point demo is still valid
CL_Disconnect();
Host_ShutdownServer();
Con_FastClose();
UI_SetActiveMenu( false );
}
cls.demoplayback = mode;
cls.state = ca_connected;
cl.background = (cls.demonum != -1) ? true : false;
cls.spectator = false;
cls.signon = 0;
demo.starttime = CL_GetDemoPlaybackClock(); // for determining whether to read another message
Netchan_Setup( NS_CLIENT, &cls.netchan, net_from, Cvar_VariableInteger( "net_qport" ), NULL, CL_GetFragmentSize );
memset( demo.cmds, 0, sizeof( demo.cmds ));
demo.angle_position = 1;
demo.framecount = 0;
cls.lastoutgoingcommand = -1;
cls.nextcmdtime = host.realtime;
cl.last_command_ack = -1;
}
/*
=================
CL_DemoAborted
=================
*/
void CL_DemoAborted( void )
{
if( cls.demofile )
FS_Close( cls.demofile );
cls.demoplayback = false;
cls.changedemo = false;
cls.timedemo = false;
demo.framecount = 0;
cls.demofile = NULL;
cls.demonum = -1;
Cvar_SetValue( "v_dark", 0.0f );
}
/*
=================
CL_DemoCompleted
=================
*/
void CL_DemoCompleted( void )
{
if( cls.demonum != -1 )
cls.changedemo = true;
CL_StopPlayback();
if( !CL_NextDemo() && !cls.changedemo )
UI_SetActiveMenu( true );
Cvar_SetValue( "v_dark", 0.0f );
}
/*
=================
CL_DemoMoveToNextSection
returns true on success, false on failure
g-cont. probably captain obvious mode is ON
=================
*/
qboolean CL_DemoMoveToNextSection( void )
{
if( ++demo.entryIndex >= demo.directory.numentries )
{
// done
CL_DemoCompleted();
return false;
}
// switch to next section, we got a dem_stop
demo.entry = &demo.directory.entries[demo.entryIndex];
// ready to continue reading, reset clock.
FS_Seek( cls.demofile, demo.entry->offset, SEEK_SET );
// time is now relative to this chunk's clock.
demo.starttime = CL_GetDemoPlaybackClock();
demo.framecount = 0;
return true;
}
qboolean CL_ReadRawNetworkData( byte *buffer, size_t *length )
{
int msglen = 0;
Assert( buffer != NULL );
Assert( length != NULL );
*length = 0; // assume we fail
FS_Read( cls.demofile, &msglen, sizeof( int ));
if( msglen < 0 )
{
Con_Reportf( S_ERROR "Demo message length < 0\n" );
CL_DemoCompleted();
return false;
}
if( msglen > MAX_INIT_MSG )
{
Con_Reportf( S_ERROR "Demo message %i > %i\n", msglen, MAX_INIT_MSG );
CL_DemoCompleted();
return false;
}
if( msglen > 0 )
{
if( FS_Read( cls.demofile, buffer, msglen ) != msglen )
{
Con_Reportf( S_ERROR "Error reading demo message data\n" );
CL_DemoCompleted();
return false;
}
}
cls.netchan.last_received = host.realtime;
cls.netchan.total_received += msglen;
*length = msglen;
if( cls.state != ca_active )
Cbuf_Execute();
return true;
}
/*
=================
CL_DemoReadMessageQuake
reads demo data and write it to client
=================
*/
qboolean CL_DemoReadMessageQuake( byte *buffer, size_t *length )
{
vec3_t viewangles;
int msglen = 0;
demoangle_t *a;
*length = 0; // assume we fail
// decide if it is time to grab the next message
if( cls.signon == SIGNONS ) // allways grab until fully connected
{
if( cls.timedemo )
{
if( host.framecount == cls.td_lastframe )
return false; // already read this frame's message
cls.td_lastframe = host.framecount;
// if this is the second frame, grab the real td_starttime
// so the bogus time on the first frame doesn't count
if( host.framecount == cls.td_startframe + 1 )
cls.td_starttime = host.realtime;
}
else if( cl.time <= cl.mtime[0] )
{
// don't need another message yet
return false;
}
}
// get the next message
FS_Read( cls.demofile, &msglen, sizeof( int ));
FS_Read( cls.demofile, &viewangles[0], sizeof( float ));
FS_Read( cls.demofile, &viewangles[1], sizeof( float ));
FS_Read( cls.demofile, &viewangles[2], sizeof( float ));
cls.netchan.incoming_sequence++;
demo.timestamp = cl.mtime[0];
cl.skip_interp = false;
// make sure what interp info contain angles from different frames
// or lerping will stop working
if( demo.lasttime != demo.timestamp )
{
// select entry into circular buffer
demo.angle_position = (demo.angle_position + 1) & ANGLE_MASK;
a = &demo.cmds[demo.angle_position];
// record update
a->starttime = demo.timestamp;
VectorCopy( viewangles, a->viewangles );
demo.lasttime = demo.timestamp;
}
if( msglen < 0 )
{
Con_Reportf( S_ERROR "Demo message length < 0\n" );
CL_DemoCompleted();
return false;
}
if( msglen > MAX_INIT_MSG )
{
Con_Reportf( S_ERROR "Demo message %i > %i\n", msglen, MAX_INIT_MSG );
CL_DemoCompleted();
return false;
}
if( msglen > 0 )
{
if( FS_Read( cls.demofile, buffer, msglen ) != msglen )
{
Con_Reportf( S_ERROR "Error reading demo message data\n" );
CL_DemoCompleted();
return false;
}
}
cls.netchan.last_received = host.realtime;
cls.netchan.total_received += msglen;
*length = msglen;
if( cls.state != ca_active )
Cbuf_Execute();
return true;
}
/*
=================
CL_DemoReadMessage
reads demo data and write it to client
=================
*/
qboolean CL_DemoReadMessage( byte *buffer, size_t *length )
{
size_t curpos = 0, lastpos = 0;
float fElapsedTime = 0.0f;
qboolean swallowmessages = true;
static int tdlastdemoframe = 0;
byte *userbuf = NULL;
size_t size;
byte cmd;
if( !cls.demofile )
{
CL_DemoCompleted();
return false;
}
if(( !cl.background && ( cl.paused || cls.key_dest != key_game )) || cls.key_dest == key_console )
{
demo.starttime += host.frametime;
return false; // paused
}
if( cls.demoplayback == DEMO_QUAKE1 )
return CL_DemoReadMessageQuake( buffer, length );
do
{
qboolean bSkipMessage = false;
if( !cls.demofile ) break;
curpos = FS_Tell( cls.demofile );
CL_ReadDemoCmdHeader( &cmd, &demo.timestamp );
fElapsedTime = CL_GetDemoPlaybackClock() - demo.starttime;
if( !cls.timedemo ) bSkipMessage = ((demo.timestamp - cl_serverframetime()) >= fElapsedTime) ? true : false;
if( cls.changelevel ) demo.framecount = 1;
// changelevel issues
if( demo.framecount <= 2 && ( fElapsedTime - demo.timestamp ) > host.frametime )
demo.starttime = CL_GetDemoPlaybackClock();
// not ready for a message yet, put it back on the file.
if( cmd != dem_norewind && cmd != dem_stop && bSkipMessage )
{
// never skip first message
if( demo.framecount != 0 )
{
FS_Seek( cls.demofile, curpos, SEEK_SET );
return false; // not time yet.
}
}
// we already have the usercmd_t for this frame
// don't read next usercmd_t so predicting will work properly
if( cmd == dem_usercmd && lastpos != 0 && demo.framecount != 0 )
{
FS_Seek( cls.demofile, lastpos, SEEK_SET );
return false; // not time yet.
}
// COMMAND HANDLERS
switch( cmd )
{
case dem_jumptime:
demo.starttime = CL_GetDemoPlaybackClock();
return false; // time is changed, skip frame
case dem_stop:
CL_DemoMoveToNextSection();
return false; // header is ended, skip frame
case dem_userdata:
FS_Read( cls.demofile, &size, sizeof( int ));
userbuf = Mem_Malloc( cls.mempool, size );
FS_Read( cls.demofile, userbuf, size );
if( clgame.hInstance )
clgame.dllFuncs.pfnDemo_ReadBuffer( size, userbuf );
Mem_Free( userbuf );
userbuf = NULL;
break;
case dem_usercmd:
CL_ReadDemoUserCmd( false );
lastpos = FS_Tell( cls.demofile );
break;
default:
swallowmessages = false;
break;
}
} while( swallowmessages );
// If we are playing back a timedemo, and we've already passed on a
// frame update for this host_frame tag, then we'll just skip this message.
if( cls.timedemo && ( tdlastdemoframe == host.framecount ))
{
FS_Seek( cls.demofile, FS_Tell ( cls.demofile ) - 5, SEEK_SET );
return false;
}
tdlastdemoframe = host.framecount;
if( !cls.demofile )
return false;
// if not on "LOADING" section, check a few things
if( demo.entryIndex )
{
// We are now on the second frame of a new section,
// if so, reset start time (unless in a timedemo)
if( demo.framecount == 1 && !cls.timedemo )
{
// cheat by moving the relative start time forward.
demo.starttime = CL_GetDemoPlaybackClock();
}
}
demo.framecount++;
CL_ReadDemoSequence( false );
return CL_ReadRawNetworkData( buffer, length );
}
void CL_DemoFindInterpolatedViewAngles( float t, float *frac, demoangle_t **prev, demoangle_t **next )
{
int i, i0, i1, imod;
float at;
if( cls.timedemo ) return;
imod = demo.angle_position - 1;
i0 = (imod + 1) & ANGLE_MASK;
i1 = (imod + 0) & ANGLE_MASK;
if( demo.cmds[i0].starttime >= t )
{
for( i = 0; i < ANGLE_BACKUP - 2; i++ )
{
at = demo.cmds[imod & ANGLE_MASK].starttime;
if( at == 0.0f ) break;
if( at < t )
{
i0 = (imod + 1) & ANGLE_MASK;
i1 = (imod + 0) & ANGLE_MASK;
break;
}
imod--;
}
}
*next = &demo.cmds[i0];
*prev = &demo.cmds[i1];
// avoid division by zero (probably this should never happens)
if((*prev)->starttime == (*next)->starttime )
{
*prev = *next;
*frac = 0.0f;
return;
}
// time spans the two entries
*frac = ( t - (*prev)->starttime ) / ((*next)->starttime - (*prev)->starttime );
*frac = bound( 0.0f, *frac, 1.0f );
}
/*
==============
CL_DemoInterpolateAngles
We can predict or inpolate player movement with standed client code
but viewangles interpolate here
==============
*/
void CL_DemoInterpolateAngles( void )
{
demoangle_t *prev = NULL, *next = NULL;
float frac = 0.0f;
float curtime;
if( cls.demoplayback == DEMO_QUAKE1 )
{
// manually select next & prev states
next = &demo.cmds[(demo.angle_position - 0) & ANGLE_MASK];
prev = &demo.cmds[(demo.angle_position - 1) & ANGLE_MASK];
if( cl.skip_interp ) *prev = *next; // camera was teleported
frac = cl.lerpFrac;
}
else
{
curtime = (CL_GetDemoPlaybackClock() - demo.starttime) - host.frametime;
if( curtime > demo.timestamp )
curtime = demo.timestamp; // don't run too far
CL_DemoFindInterpolatedViewAngles( curtime, &frac, &prev, &next );
}
if( prev && next )
{
vec4_t q, q1, q2;
AngleQuaternion( next->viewangles, q1, false );
AngleQuaternion( prev->viewangles, q2, false );
QuaternionSlerp( q2, q1, frac, q );
QuaternionAngle( q, cl.viewangles );
}
else if( cl.cmd != NULL )
VectorCopy( cl.cmd->viewangles, cl.viewangles );
}
/*
==============
CL_FinishTimeDemo
show stats
==============
*/
void CL_FinishTimeDemo( void )
{
int frames;
double time;
cls.timedemo = false;
// the first frame didn't count
frames = (host.framecount - cls.td_startframe) - 1;
time = host.realtime - cls.td_starttime;
if( !time ) time = 1.0;
Con_Printf( "%i frames %5.3f seconds %5.3f fps\n", frames, time, frames / time );
}
/*
==============
CL_StopPlayback
Called when a demo file runs out, or the user starts a game
==============
*/
void CL_StopPlayback( void )
{
if( !cls.demoplayback ) return;
// release demofile
FS_Close( cls.demofile );
cls.demoplayback = false;
demo.framecount = 0;
cls.demofile = NULL;
cls.olddemonum = Q_max( -1, cls.demonum - 1 );
if( demo.directory.entries != NULL )
Mem_Free( demo.directory.entries );
cls.td_lastframe = host.framecount;
demo.directory.numentries = 0;
demo.directory.entries = NULL;
demo.header.host_fps = 0.0;
demo.entry = NULL;
cls.demoname[0] = '\0'; // clear demoname too
gameui.globals->demoname[0] = '\0';
if( cls.timedemo )
CL_FinishTimeDemo();
if( cls.changedemo )
{
S_StopAllSounds( true );
S_StopBackgroundTrack();
}
else
{
// let game known about demo state
Cvar_FullSet( "cl_background", "0", FCVAR_READ_ONLY );
cls.state = ca_disconnected;
cls.set_lastdemo = false;
S_StopBackgroundTrack();
cls.connect_time = 0;
cls.demonum = -1;
cls.signon = 0;
// and finally clear the state
CL_ClearState ();
}
}
/*
==================
CL_GetDemoComment
==================
*/
int CL_GetDemoComment( const char *demoname, char *comment )
{
file_t *demfile;
demoheader_t demohdr;
demodirectory_t directory;
demoentry_t entry;
float playtime = 0.0f;
int i;
if( !comment ) return false;
demfile = FS_Open( demoname, "rb", false );
if( !demfile )
{
Q_strncpy( comment, "", MAX_STRING );
return false;
}
// read in the m_DemoHeader
FS_Read( demfile, &demohdr, sizeof( demoheader_t ));
if( demohdr.id != IDEMOHEADER )
{
FS_Close( demfile );
Q_strncpy( comment, "<corrupted>", MAX_STRING );
return false;
}
if( demohdr.net_protocol != PROTOCOL_VERSION || demohdr.dem_protocol != DEMO_PROTOCOL )
{
FS_Close( demfile );
Q_strncpy( comment, "<invalid protocol>", MAX_STRING );
return false;
}
// now read in the directory structure.
FS_Seek( demfile, demohdr.directory_offset, SEEK_SET );
FS_Read( demfile, &directory.numentries, sizeof( int ));
if( directory.numentries < 1 || directory.numentries > 1024 )
{
FS_Close( demfile );
Q_strncpy( comment, "<corrupted>", MAX_STRING );
return false;
}
for( i = 0; i < directory.numentries; i++ )
{
FS_Read( demfile, &entry, sizeof( demoentry_t ));
playtime += entry.playback_time;
}
// split comment to sections
Q_strncpy( comment, demohdr.mapname, CS_SIZE );
Q_strncpy( comment + CS_SIZE, demohdr.comment, CS_SIZE );
Q_strncpy( comment + CS_SIZE * 2, va( "%g sec", playtime ), CS_TIME );
// all done
FS_Close( demfile );
return true;
}
/*
==================
CL_NextDemo
Called when a demo finishes
==================
*/
qboolean CL_NextDemo( void )
{
char str[MAX_QPATH];
if( cls.demonum == -1 )
return false; // don't play demos
S_StopAllSounds( true );
if( !cls.demos[cls.demonum][0] || cls.demonum == MAX_DEMOS )
{
cls.demonum = 0;
if( !cls.demos[cls.demonum][0] )
{
Con_Printf( "no demos listed with startdemos\n" );
cls.demonum = -1;
return false;
}
}
Q_snprintf( str, MAX_STRING, "playdemo %s\n", cls.demos[cls.demonum] );
Cbuf_InsertText( str );
cls.demonum++;
return true;
}
/*
==================
CL_CheckStartupDemos
queue demos loop after movie playing
==================
*/
void CL_CheckStartupDemos( void )
{
if( !cls.demos_pending )
return; // no demos in loop
if( cls.movienum != -1 )
return; // wait until movies finished
if( GameState->nextstate != STATE_RUNFRAME || cls.demoplayback )
{
// commandline override
cls.demos_pending = false;
cls.demonum = -1;
return;
}
// run demos loop in background mode
Cvar_SetValue( "v_dark", 1.0f );
cls.demos_pending = false;
cls.demonum = 0;
CL_NextDemo ();
}
/*
==================
CL_DemoGetName
==================
*/
static void CL_DemoGetName( int lastnum, char *filename )
{
int a, b, c, d;
if( lastnum < 0 || lastnum > 9999 )
{
// bound
Q_strcpy( filename, "demo9999" );
return;
}
a = lastnum / 1000;
lastnum -= a * 1000;
b = lastnum / 100;
lastnum -= b * 100;
c = lastnum / 10;
lastnum -= c * 10;
d = lastnum;
Q_sprintf( filename, "demo%i%i%i%i", a, b, c, d );
}
/*
====================
CL_Record_f
record <demoname>
Begins recording a demo from the current position
====================
*/
void CL_Record_f( void )
{
string demoname, demopath;
const char *name;
int n;
if( Cmd_Argc() == 1 )
{
name = "new";
}
else if( Cmd_Argc() == 2 )
{
name = Cmd_Argv( 1 );
}
else
{
Con_Printf( S_USAGE "record <demoname>\n" );
return;
}
if( cls.demorecording )
{
Con_Printf( "Already recording.\n");
return;
}
if( cls.demoplayback )
{
Con_Printf( "Can't record during demo playback.\n");
return;
}
if( !cls.demoheader || cls.state != ca_active )
{
Con_Printf( "You must be in a level to record.\n");
return;
}
if( !Q_stricmp( name, "new" ))
{
// scan for a free filename
for( n = 0; n < 10000; n++ )
{
CL_DemoGetName( n, demoname );
if( !FS_FileExists( va( "%s.dem", demoname ), true ))
break;
}
if( n == 10000 )
{
Con_Printf( S_ERROR "no free slots for demo recording\n" );
return;
}
}
else Q_strncpy( demoname, name, sizeof( demoname ));
// open the demo file
Q_sprintf( demopath, "%s.dem", demoname );
// make sure what old demo is removed
if( FS_FileExists( demopath, false ))
FS_Delete( demopath );
Q_strncpy( cls.demoname, demoname, sizeof( cls.demoname ));
Q_strncpy( gameui.globals->demoname, demoname, sizeof( gameui.globals->demoname ));
CL_WriteDemoHeader( demopath );
}
/*
====================
CL_PlayDemo_f
playdemo <demoname>
====================
*/
void CL_PlayDemo_f( void )
{
char filename[MAX_QPATH];
char demoname[MAX_QPATH];
int i, ident;
if( Cmd_Argc() < 2 )
{
Con_Printf( S_USAGE "playdemo <demoname>\n" );
return;
}
if( cls.demoplayback )
{
CL_StopPlayback();
}
if( cls.demorecording )
{
Con_Printf( "Can't playback during demo record.\n");
return;
}
Q_strncpy( demoname, Cmd_Argv( 1 ), sizeof( demoname ));
COM_StripExtension( demoname );
Q_snprintf( filename, sizeof( filename ), "%s.dem", demoname );
// hidden parameter
if( Cmd_Argc() > 2 )
cls.set_lastdemo = Q_atoi( Cmd_Argv( 2 ));
// member last demo
if( cls.set_lastdemo )
Cvar_Set( "lastdemo", demoname );
if( !FS_FileExists( filename, true ))
{
Con_Printf( S_ERROR "couldn't open %s\n", filename );
CL_DemoAborted();
return;
}
cls.demofile = FS_Open( filename, "rb", true );
Q_strncpy( cls.demoname, demoname, sizeof( cls.demoname ));
Q_strncpy( gameui.globals->demoname, demoname, sizeof( gameui.globals->demoname ));
FS_Read( cls.demofile, &ident, sizeof( int ));
FS_Seek( cls.demofile, 0, SEEK_SET ); // rewind back to start
cls.forcetrack = 0;
// check for quake demos
if( ident != IDEMOHEADER )
{
int c, neg = false;
demo.header.host_fps = host_maxfps->value;
while(( c = FS_Getc( cls.demofile )) != '\n' )
{
if( c == '-' ) neg = true;
else cls.forcetrack = cls.forcetrack * 10 + (c - '0');
}
if( neg ) cls.forcetrack = -cls.forcetrack;
CL_DemoStartPlayback( DEMO_QUAKE1 );
return; // quake demo is started
}
// read in the demo header
FS_Read( cls.demofile, &demo.header, sizeof( demoheader_t ));
if( demo.header.id != IDEMOHEADER )
{
Con_Printf( S_ERROR "%s is not a demo file\n", demoname );
CL_DemoAborted();
return;
}
if( demo.header.net_protocol != PROTOCOL_VERSION || demo.header.dem_protocol != DEMO_PROTOCOL )
{
if( demo.header.dem_protocol != DEMO_PROTOCOL )
Con_Printf( S_ERROR "playdemo: demo protocol outdated (%i should be %i)\n", demo.header.dem_protocol, DEMO_PROTOCOL );
if( demo.header.net_protocol != PROTOCOL_VERSION )
Con_Printf( S_ERROR "playdemo: net protocol outdated (%i should be %i)\n", demo.header.net_protocol, PROTOCOL_VERSION );
CL_DemoAborted();
return;
}
// now read in the directory structure.
FS_Seek( cls.demofile, demo.header.directory_offset, SEEK_SET );
FS_Read( cls.demofile, &demo.directory.numentries, sizeof( int ));
if( demo.directory.numentries < 1 || demo.directory.numentries > 1024 )
{
Con_Printf( S_ERROR "demo had bogus # of directory entries: %i\n", demo.directory.numentries );
CL_DemoAborted();
return;
}
// allocate demo entries
demo.directory.entries = Mem_Malloc( cls.mempool, sizeof( demoentry_t ) * demo.directory.numentries );
for( i = 0; i < demo.directory.numentries; i++ )
{
FS_Read( cls.demofile, &demo.directory.entries[i], sizeof( demoentry_t ));
}
demo.entryIndex = 0;
demo.entry = &demo.directory.entries[demo.entryIndex];
FS_Seek( cls.demofile, demo.entry->offset, SEEK_SET );
CL_DemoStartPlayback( DEMO_XASH3D );
// g-cont. is this need?
Q_strncpy( cls.servername, demoname, sizeof( cls.servername ));
// begin a playback demo
}
/*
====================
CL_TimeDemo_f
timedemo <demoname>
====================
*/
void CL_TimeDemo_f( void )
{
if( Cmd_Argc() != 2 )
{
Con_Printf( S_USAGE "timedemo <demoname>\n" );
return;
}
CL_PlayDemo_f ();
// cls.td_starttime will be grabbed at the second frame of the demo, so
// all the loading time doesn't get counted
cls.timedemo = true;
cls.td_starttime = host.realtime;
cls.td_startframe = host.framecount;
cls.td_lastframe = -1; // get a new message this frame
}
/*
==================
CL_StartDemos_f
==================
*/
void CL_StartDemos_f( void )
{
int i, c;
if( cls.key_dest != key_menu )
{
Con_Printf( "'startdemos' is not valid from the console\n" );
return;
}
c = Cmd_Argc() - 1;
if( c > MAX_DEMOS )
{
Con_DPrintf( S_WARN "Host_StartDemos: max %i demos in demoloop\n", MAX_DEMOS );
c = MAX_DEMOS;
}
Con_Printf( "%i demo%s in loop\n", c, (c > 1) ? "s" : "" );
for( i = 1; i < c + 1; i++ )
Q_strncpy( cls.demos[i-1], Cmd_Argv( i ), sizeof( cls.demos[0] ));
cls.demos_pending = true;
}
/*
==================
CL_Demos_f
Return to looping demos
==================
*/
void CL_Demos_f( void )
{
if( cls.key_dest != key_menu )
{
Con_Printf( "'demos' is not valid from the console\n" );
return;
}
// demos loop are not running
if( cls.olddemonum == -1 )
return;
cls.demonum = cls.olddemonum;
// run demos loop in background mode
if( !SV_Active() && !cls.demoplayback )
CL_NextDemo ();
}
/*
====================
CL_Stop_f
stop any client activity
====================
*/
void CL_Stop_f( void )
{
// stop all
CL_StopRecord();
CL_StopPlayback();
SCR_StopCinematic();
// stop background track that was runned from the console
if( !SV_Active( ))
{
S_StopBackgroundTrack();
}
}