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Diffstat (limited to 'source/cl_demo.c')
| -rw-r--r-- | source/cl_demo.c | 666 |
1 files changed, 666 insertions, 0 deletions
diff --git a/source/cl_demo.c b/source/cl_demo.c new file mode 100644 index 0000000..31acd44 --- /dev/null +++ b/source/cl_demo.c @@ -0,0 +1,666 @@ +/* +Copyright (C) 2003-2006 Andrey Nazarov + +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 2 +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. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +// +// cl_demo.c - demo recording and playback +// + +#include "cl_local.h" + +cvar_t *cl_demo_local_fov; + +static cvar_t *cl_demo_timescale; + +// ========================================================================= + +/* +==================== +CL_WriteDemoMessage + +Dumps the current demo message, prefixed by the length. +==================== +*/ +void CL_WriteDemoMessage( sizebuf_t *buf ) { + int length; + + if( buf->overflowed ) { + buf->overflowed = qfalse; + Com_WPrintf( "Demo message overflowed.\n" ); + return; + } + + length = LittleLong( buf->cursize ); + FS_Write( &length, 4, cls.demorecording ); + FS_Write( buf->data, buf->cursize, cls.demorecording ); + + SZ_Clear( buf ); +} + +/* +============= +CL_EmitPacketEntities + +Writes a delta update of an entity_state_t list to the message. +============= +*/ +void CL_EmitPacketEntities( server_frame_t *from, server_frame_t *to ) { + entity_state_t *oldent, *newent; + int oldindex, newindex; + int oldnum, newnum; + int i, from_num_entities; + + if( !from ) + from_num_entities = 0; + else + from_num_entities = from->numEntities; + + newindex = 0; + oldindex = 0; + oldent = newent = 0; + while( newindex < to->numEntities || oldindex < from_num_entities ) { + if( newindex >= to->numEntities ) { + newnum = 9999; + } else { + i = ( to->firstEntity + newindex ) & PARSE_ENTITIES_MASK; + newent = &cl.entityStates[i]; + newnum = newent->number; + } + + if( oldindex >= from_num_entities ) { + oldnum = 9999; + } else { + i = ( from->firstEntity + oldindex ) & PARSE_ENTITIES_MASK; + oldent = &cl.entityStates[i]; + oldnum = oldent->number; + } + + if( newnum == oldnum ) { + // delta update from old position + // because the force parm is false, this will not result + // in any bytes being emited if the entity has not changed at all + MSG_WriteDeltaEntity( oldent, newent, 0 ); + oldindex++; + newindex++; + continue; + } + + if( newnum < oldnum ) { + // this is a new entity, send it from the baseline + MSG_WriteDeltaEntity( &cl.baselines[newnum], newent, + MSG_ES_FORCE|MSG_ES_NEWENTITY ); + newindex++; + continue; + } + + if( newnum > oldnum ) { + // the old entity isn't present in the new message + MSG_WriteDeltaEntity( oldent, NULL, MSG_ES_FORCE ); + oldindex++; + continue; + } + } + + MSG_WriteShort( 0 ); // end of packetentities +} + +/* +==================== +CL_EmitDemoFrame + +Writes delta from the last frame we got to the current frame. +==================== +*/ +void CL_EmitDemoFrame( void ) { + server_frame_t *oldframe; + player_state_t *oldstate; + int lastframe; + + if( cl.demoframe < 0 ) { + oldframe = NULL; + oldstate = NULL; + lastframe = -1; + } else { + oldframe = &cl.frames[cl.demoframe & UPDATE_MASK]; + oldstate = &oldframe->ps; + lastframe = cl.demoframe; + if( oldframe->number != cl.demoframe || !oldframe->valid || + cl.numEntityStates - oldframe->firstEntity > MAX_PARSE_ENTITIES ) + { + oldframe = NULL; + oldstate = NULL; + lastframe = -1; + } + } + + MSG_WriteByte( svc_frame ); + MSG_WriteLong( cl.frame.number ); + MSG_WriteLong( lastframe ); // what we are delta'ing from + MSG_WriteByte( 0 ); // rate dropped packets + + // send over the areabits + MSG_WriteByte( cl.frame.areabytes ); + MSG_WriteData( cl.frame.areabits, cl.frame.areabytes ); + + // delta encode the playerstate + MSG_WriteByte( svc_playerinfo ); + MSG_WriteDeltaPlayerstate_Default( oldstate, &cl.frame.ps ); + + // delta encode the entities + MSG_WriteByte( svc_packetentities ); + CL_EmitPacketEntities( oldframe, &cl.frame ); + + if( cls.demobuff.cursize + msg_write.cursize > cls.demobuff.maxsize ) { + Com_WPrintf( "Demo frame overflowed.\n" ); + } else { + SZ_Write( &cls.demobuff, msg_write.data, msg_write.cursize ); + cl.demoframe = cl.frame.number; + } + + SZ_Clear( &msg_write ); +} + +/* +==================== +CL_Stop_f + +stop recording a demo +==================== +*/ +void CL_Stop_f( void ) { + int len; + + if( !cls.demorecording ) { + Com_Printf( "Not recording a demo.\n" ); + return; + } + + if( cls.serverProtocol == PROTOCOL_VERSION_R1Q2 || + cls.serverProtocol == PROTOCOL_VERSION_Q2PRO ) + { + // tell the server we finished recording + MSG_WriteByte( clc_setting ); + MSG_WriteShort( CLS_RECORDING ); + MSG_WriteShort( 0 ); + MSG_FlushTo( &cls.netchan->message ); + } + +// finish up + len = -1; + FS_Write( &len, 4, cls.demorecording ); + +// close demofile + FS_FCloseFile( cls.demorecording ); + cls.demorecording = 0; + + Com_Printf( "Stopped demo.\n" ); +} + +/* +==================== +CL_Record_f + +record <demoname> + +Begins recording a demo from the current position +==================== +*/ +void CL_Record_f( void ) { + char name[MAX_QPATH]; + int i, length; + entity_state_t *ent; + char *string; + fileHandle_t demofile; + qboolean compressed = qfalse; + + i = 1; + if( !strcmp( Cmd_Argv( i ), "-c" ) || !strcmp( Cmd_Argv( i ), "--compressed" ) ) { + compressed = qtrue; + i++; + } + + if( i >= Cmd_Argc() ) { + Com_Printf( "Usage: %s [-c|--compressed] [/]<filename>\n", Cmd_Argv( 0 ) ); + return; + } + + if( cls.demorecording ) { + Com_Printf( "Already recording.\n" ); + return; + } + + if( cls.state != ca_active ) { + Com_Printf( "You must be in a level to record.\n" ); + return; + } + + // + // open the demo file + // + string = Cmd_Argv( i ); + if( *string == '/' ) { + Q_strncpyz( name, string + 1, sizeof( name ) ); + } else { + Com_sprintf( name, sizeof( name ), "demos/%s", string ); + COM_DefaultExtension( name, ".dm2", sizeof( name ) ); + } + if( compressed ) { + Q_strcat( name, sizeof( name ), ".gz" ); + } + + FS_FOpenFile( name, &demofile, FS_MODE_WRITE ); + if( !demofile ) { + Com_EPrintf( "Couldn't open %s for writing.\n", name ); + return; + } + + Com_Printf( "Recording client demo to %s.\n", name ); + + cls.demorecording = demofile; + + // the first frame will be delta uncompressed + cl.demoframe = -1; + + if( cls.serverProtocol == PROTOCOL_VERSION_R1Q2 || + cls.serverProtocol == PROTOCOL_VERSION_Q2PRO ) + { + // tell the server we are recording + MSG_WriteByte( clc_setting ); + MSG_WriteShort( CLS_RECORDING ); + MSG_WriteShort( 1 ); + MSG_FlushTo( &cls.netchan->message ); + } + + // + // write out messages to hold the startup information + // + + // send the serverdata + MSG_WriteByte( svc_serverdata ); + MSG_WriteLong( PROTOCOL_VERSION_DEFAULT ); + MSG_WriteLong( 0x10000 + cl.servercount ); + MSG_WriteByte( ATR_DEMO ); // demos are always attract loops + MSG_WriteString( cl.gamedir ); + MSG_WriteShort( cl.clientNum ); + MSG_WriteString( cl.configstrings[CS_NAME] ); + + // configstrings + for( i = 0; i < MAX_CONFIGSTRINGS; i++ ) { + string = cl.configstrings[i]; + if( !string[0] ) { + continue; + } + + length = strlen( string ); + if( length > MAX_QPATH ) { + length = MAX_QPATH; + } + + if( msg_write.cursize + length + 4 > MAX_PACKETLEN ) { + CL_WriteDemoMessage( &msg_write ); + } + + MSG_WriteByte( svc_configstring ); + MSG_WriteShort( i ); + MSG_WriteData( string, length ); + MSG_WriteByte( 0 ); + } + + // baselines + for( i = 1; i < MAX_EDICTS; i++ ) { + ent = &cl.baselines[i]; + if( !ent->number ) { + continue; + } + + if( msg_write.cursize + 64 > MAX_PACKETLEN ) { + CL_WriteDemoMessage( &msg_write ); + } + + MSG_WriteByte( svc_spawnbaseline ); + MSG_WriteDeltaEntity( NULL, ent, MSG_ES_FORCE ); + } + + MSG_WriteByte( svc_stufftext ); + MSG_WriteString( "precache\n" ); + + // write it to the demo file + CL_WriteDemoMessage( &msg_write ); + + // the rest of the demo file will be individual frames +} + +/* +==================== +CL_ReadNextDemoMessage +==================== +*/ +static qboolean CL_ReadNextDemoMessage( fileHandle_t f ) { + int msglen; + + // read msglen + if( FS_Read( &msglen, 4, f ) != 4 ) { + return qfalse; + } + + if( msglen == -1 ) { + return qfalse; + } + + msglen = LittleLong( msglen ); + if( msglen < 1 || msglen >= msg_read.maxsize ) { + return qfalse; + } + + msg_read.cursize = msglen; + msg_read.readcount = 0; + + // read packet data + if( FS_Read( msg_read.data, msglen, f ) != msglen ) { + return qfalse; + } + + return qtrue; + +} + +/* +==================== +CL_ParseNextDemoMessage +==================== +*/ +static void CL_ParseNextDemoMessage( void ) { + int pos; + char *s; + + if( !CL_ReadNextDemoMessage( cls.demoplayback ) ) { + s = Cvar_VariableString( "nextserver" ); + if( !s[0] ) { + Com_Error( ERR_SILENT, "Demo finished" ); + } + Cbuf_AddText( s ); + Cbuf_AddText( "\n" ); + Cvar_Set( "nextserver", "" ); + cls.state = ca_connected; + return; + } + + CL_ParseServerMessage(); + + if( cls.demofileSize ) { + pos = FS_Tell( cls.demoplayback ) - cls.demofileFrameOffset; + if( pos < 0 ) { + pos = 0; + } + cls.demofilePercent = pos * 100 / cls.demofileSize; + } +} + +/* +==================== +CL_PlayDemo_f +==================== +*/ +static void CL_PlayDemo_f( void ) { + char name[MAX_QPATH]; + fileHandle_t demofile; + char *arg, *ext; + int length; + + if( Cmd_Argc() < 2 ) { + Com_Printf( "Usage: %s <filename>\n", Cmd_Argv( 0 ) ); + return; + } + + demofile = 0; + length = 0; + + arg = Cmd_Argv( 1 ); + + if( arg[0] == '/' ) { + // Assume full path is given + Q_strncpyz( name, arg + 1, sizeof( name ) ); + FS_FOpenFile( name, &demofile, FS_MODE_READ ); + } else { + // Search for matching extensions + Com_sprintf( name, sizeof( name ), "demos/%s", arg ); + FS_FOpenFile( name, &demofile, FS_MODE_READ ); + if( !demofile ) { + ext = COM_FileExtension( arg ); + if( strcmp( ext, ".dm2" ) ) { + length=Com_sprintf( name, sizeof( name ), "demos/%s.dm2", arg ); + Com_Printf( "%d\n",length); + FS_FOpenFile( name, &demofile, FS_MODE_READ ); + } + } + } + + if( !demofile ) { + Com_Printf( "Couldn't open %s\n", name ); + return; + } + + if( sv_running->integer ) { + // if running a local server, kill it and reissue + SV_Shutdown( "Server was killed\n", KILL_DROP ); + } + + CL_Disconnect( ERR_DISCONNECT, NULL ); + + Con_Close(); + + cls.demoplayback = demofile; + cls.state = ca_connected; + Q_strncpyz( cls.servername, COM_SkipPath( name ), sizeof( cls.servername ) ); + cls.serverAddress.type = NA_LOOPBACK; + + SCR_UpdateScreen(); + + do { + CL_ParseNextDemoMessage(); + Cbuf_Execute(); + } while( cls.state == ca_connected ); + + length = FS_GetFileLengthNoCache( demofile ); + cls.demofileFrameOffset = FS_Tell( demofile ); + cls.demofileSize = length - cls.demofileFrameOffset; + + if( com_timedemo->integer ) { + cls.timeDemoFrames = 0; + cls.timeDemoStart = Sys_Milliseconds(); + } +} + +static const char *CL_PlayDemo_g( const char *partial, int state ) { + return Com_FileNameGeneratorByFilter( "demos", "*.dm2;*.dm2.gz", + partial, qfalse, state ); +} + +/* +==================== +CL_GetDemoInfo +==================== +*/ +qboolean CL_GetDemoInfo( const char *path, demoInfo_t *info ) { + fileHandle_t hFile; + int c, protocol; + char *s, *p; + + memset( info, 0, sizeof( *info ) ); + + FS_FOpenFile( path, &hFile, FS_MODE_READ ); + if( !hFile ) { + return qfalse; + } + + if( !CL_ReadNextDemoMessage( hFile ) ) { + goto fail; + } + + if( MSG_ReadByte() != svc_serverdata ) { + goto fail; + } + + protocol = MSG_ReadLong(); + + msg_read.readcount += 5; + + Q_strncpyz( info->gamedir, MSG_ReadString(), sizeof( info->gamedir ) ); + + info->clientNum = MSG_ReadShort(); + + Q_strncpyz( info->fullLevelName, MSG_ReadString(), sizeof( info->fullLevelName ) ); + + switch( protocol ) { + case PROTOCOL_VERSION_MVD: + info->mvd = qtrue; + msg_read.readcount += 2; + break; + case PROTOCOL_VERSION_R1Q2: + msg_read.readcount += 5; + break; + case PROTOCOL_VERSION_Q2PRO: + msg_read.readcount += 5; + break; + default: + break; + } + + while( 1 ) { + c = MSG_ReadByte(); + if( c == -1 ) { + if( !CL_ReadNextDemoMessage( hFile ) ) { + break; + } + continue; // parse new message + } + if( c != svc_configstring ) { + break; + } + c = MSG_ReadShort(); + s = MSG_ReadString(); + if( c >= CS_PLAYERSKINS && c < CS_PLAYERSKINS + MAX_DEMOINFO_CLIENTS ) { + c -= CS_PLAYERSKINS; + Q_strncpyz( info->clients[c], s, sizeof( info->clients[0] ) ); + if( ( p = strchr( info->clients[c], '\\' ) ) != NULL ) { + *p = 0; + } + } else if( c == CS_MODELS + 1 ) { + if( strlen( s ) > 9 ) { + Q_strncpyz( info->mapname, s + 5, sizeof( info->mapname ) ); // skip "maps/" + info->mapname[ strlen( info->mapname ) - 4 ] = 0; // cut off ".bsp" + } + } + } + + FS_FCloseFile( hFile ); + return qtrue; + +fail: + FS_FCloseFile( hFile ); + return qfalse; + +} + +// ========================================================================= + + +/* +==================== +CL_DemoFrame +==================== +*/ +void CL_DemoFrame( int msec ) { + static float frac; + int dt; + + if( cls.state < ca_connected ) { + return; + } + + if( sv_paused->integer ) { + return; + } + + if( !cls.demoplayback ) { + cl.time += msec; + return; + } + + if( cls.state != ca_active ) { + CL_ParseNextDemoMessage(); + return; + } + + if( com_timedemo->integer ) { + CL_ParseNextDemoMessage(); + cl.time = cl.serverTime; + cls.timeDemoFrames++; + return; + } + + if( cl_demo_timescale->value < 0 ) { + Cvar_Set( "cl_demo_timescale", "0" ); + } else if( cl_demo_timescale->value > 1000 ) { + Cvar_Set( "cl_demo_timescale", "1000" ); + } + + if( cl_demo_timescale->value ) { + frac += msec * cl_demo_timescale->value; + dt = frac; + frac -= dt; + + cl.time += dt; + } + + while( cl.serverTime < cl.time ) { + CL_ParseNextDemoMessage(); + if( cls.state != ca_active ) { + break; + } + } + +} + +static void cl_demo_local_fov_changed( cvar_t *self ) { + CL_UpdateLocalFovSetting(); +} + +static const cmdreg_t c_demo[] = { + { "demo", CL_PlayDemo_f, CL_PlayDemo_g }, + { "record", CL_Record_f, CL_PlayDemo_g }, + { "stop", CL_Stop_f }, + + { NULL } +}; + +/* +==================== +CL_InitDemos +==================== +*/ +void CL_InitDemos( void ) { + cl_demo_timescale = Cvar_Get( "cl_demo_timescale", "1", 0 ); + cl_demo_local_fov = Cvar_Get( "cl_demo_local_fov", "1", 0 ); + cl_demo_local_fov->changed = cl_demo_local_fov_changed; + + Cmd_Register( c_demo ); +} + + |