ref: a1da754ee85d9f5b17f6f67a61945f4994565c9b
dir: /qw/cl_demo.c/
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
void CL_FinishTimeDemo (void);
/*
==============================================================================
DEMO CODE
When a demo is playing back, all NET_SendMessages are skipped, and
NET_GetMessages are read from the demo file.
Whenever cl.time gets past the last received message, another message is
read from the demo file.
==============================================================================
*/
/*
==============
CL_StopPlayback
Called when a demo file runs out, or the user starts a game
==============
*/
void CL_StopPlayback (void)
{
if (!cls.demoplayback)
return;
fclose (cls.demofile);
cls.demofile = NULL;
cls.state = ca_disconnected;
cls.demoplayback = 0;
if (cls.timedemo)
CL_FinishTimeDemo ();
}
#define dem_cmd 0
#define dem_read 1
#define dem_set 2
/*
====================
CL_WriteDemoCmd
Writes the current user cmd
====================
*/
void CL_WriteDemoCmd (usercmd_t *pcmd)
{
int i;
float fl;
byte c;
usercmd_t cmd;
//Con_Printf("write: %ld bytes, %4.4f\n", msg->cursize, realtime);
fl = LittleFloat((float)realtime);
fwrite (&fl, sizeof(fl), 1, cls.demofile);
c = dem_cmd;
fwrite (&c, sizeof(c), 1, cls.demofile);
// correct for byte order, bytes don't matter
cmd = *pcmd;
for (i = 0; i < 3; i++)
cmd.angles[i] = LittleFloat(cmd.angles[i]);
cmd.forwardmove = LittleShort(cmd.forwardmove);
cmd.sidemove = LittleShort(cmd.sidemove);
cmd.upmove = LittleShort(cmd.upmove);
fwrite(&cmd, sizeof(cmd), 1, cls.demofile);
for (i=0 ; i<3 ; i++)
{
fl = LittleFloat (cl.viewangles[i]);
fwrite (&fl, 4, 1, cls.demofile);
}
fflush (cls.demofile);
}
/*
====================
CL_WriteDemoMessage
Dumps the current net message, prefixed by the length and view angles
====================
*/
void CL_WriteDemoMessage (sizebuf_t *msg)
{
int len;
float fl;
byte c;
//Con_Printf("write: %ld bytes, %4.4f\n", msg->cursize, realtime);
if (!cls.demorecording)
return;
fl = LittleFloat((float)realtime);
fwrite (&fl, sizeof(fl), 1, cls.demofile);
c = dem_read;
fwrite (&c, sizeof(c), 1, cls.demofile);
len = LittleLong (msg->cursize);
fwrite (&len, 4, 1, cls.demofile);
fwrite (msg->data, msg->cursize, 1, cls.demofile);
fflush (cls.demofile);
}
/*
====================
CL_GetDemoMessage
FIXME...
====================
*/
qboolean CL_GetDemoMessage (void)
{
int r, i, j;
float f;
float demotime;
byte c;
usercmd_t *pcmd;
// read the time from the packet
fread(&demotime, sizeof(demotime), 1, cls.demofile);
demotime = LittleFloat(demotime);
// decide if it is time to grab the next message
if (cls.timedemo) {
if (cls.td_lastframe < 0)
cls.td_lastframe = demotime;
else if (demotime > cls.td_lastframe) {
cls.td_lastframe = demotime;
// rewind back to time
fseek(cls.demofile, ftell(cls.demofile) - sizeof(demotime),
SEEK_SET);
return 0; // allready read this frame's message
}
if (!cls.td_starttime && cls.state == ca_active) {
cls.td_starttime = Sys_DoubleTime();
cls.td_startframe = host_framecount;
}
realtime = demotime; // warp
} else if (!cl.paused && cls.state >= ca_onserver) { // allways grab until fully connected
if (realtime + 1.0 < demotime) {
// too far back
realtime = demotime - 1.0;
// rewind back to time
fseek(cls.demofile, ftell(cls.demofile) - sizeof(demotime),
SEEK_SET);
return 0;
} else if (realtime < demotime) {
// rewind back to time
fseek(cls.demofile, ftell(cls.demofile) - sizeof(demotime),
SEEK_SET);
return 0; // don't need another message yet
}
} else
realtime = demotime; // we're warping
if (cls.state < ca_demostart)
Host_Error ("CL_GetDemoMessage: cls.state != ca_active");
// get the msg type
fread (&c, sizeof(c), 1, cls.demofile);
switch (c) {
case dem_cmd :
// user sent input
i = cls.netchan.outgoing_sequence & UPDATE_MASK;
pcmd = &cl.frames[i].cmd;
r = fread (pcmd, sizeof(*pcmd), 1, cls.demofile);
if (r != 1)
{
CL_StopPlayback ();
return 0;
}
// byte order stuff
for (j = 0; j < 3; j++)
pcmd->angles[j] = LittleFloat(pcmd->angles[j]);
pcmd->forwardmove = LittleShort(pcmd->forwardmove);
pcmd->sidemove = LittleShort(pcmd->sidemove);
pcmd->upmove = LittleShort(pcmd->upmove);
cl.frames[i].senttime = demotime;
cl.frames[i].receivedtime = -1; // we haven't gotten a reply yet
cls.netchan.outgoing_sequence++;
for (i=0 ; i<3 ; i++)
{
fread (&f, 4, 1, cls.demofile);
cl.viewangles[i] = LittleFloat (f);
}
break;
case dem_read:
// get the next message
fread (&net_message.cursize, 4, 1, cls.demofile);
net_message.cursize = LittleLong (net_message.cursize);
//Con_Printf("read: %ld bytes\n", net_message.cursize);
if (net_message.cursize > MAX_MSGLEN)
Sys_Error ("Demo message > MAX_MSGLEN");
r = fread (net_message.data, net_message.cursize, 1, cls.demofile);
if (r != 1)
{
CL_StopPlayback ();
return 0;
}
break;
case dem_set :
fread (&i, 4, 1, cls.demofile);
cls.netchan.outgoing_sequence = LittleLong(i);
fread (&i, 4, 1, cls.demofile);
cls.netchan.incoming_sequence = LittleLong(i);
break;
default :
Con_Printf("Corrupted demo.\n");
CL_StopPlayback ();
return 0;
}
return 1;
}
/*
====================
CL_GetMessage
Handles recording and playback of demos, on top of NET_ code
====================
*/
qboolean CL_GetMessage (void)
{
if (cls.demoplayback)
return CL_GetDemoMessage ();
if (!NET_GetPacket ())
return false;
CL_WriteDemoMessage (&net_message);
return true;
}
/*
====================
CL_Stop_f
stop recording a demo
====================
*/
void CL_Stop_f (void)
{
if (!cls.demorecording)
{
Con_Printf ("Not recording a demo.\n");
return;
}
// write a disconnect message to the demo file
SZ_Clear (&net_message);
MSG_WriteLong (&net_message, -1); // -1 sequence means out of band
MSG_WriteByte (&net_message, svc_disconnect);
MSG_WriteString (&net_message, "EndOfDemo");
CL_WriteDemoMessage (&net_message);
// finish up
fclose (cls.demofile);
cls.demofile = NULL;
cls.demorecording = false;
Con_Printf ("Completed demo\n");
}
/*
====================
CL_WriteDemoMessage
Dumps the current net message, prefixed by the length and view angles
====================
*/
void CL_WriteRecordDemoMessage (sizebuf_t *msg, int seq)
{
int len;
int i;
float fl;
byte c;
//Con_Printf("write: %ld bytes, %4.4f\n", msg->cursize, realtime);
if (!cls.demorecording)
return;
fl = LittleFloat((float)realtime);
fwrite (&fl, sizeof(fl), 1, cls.demofile);
c = dem_read;
fwrite (&c, sizeof(c), 1, cls.demofile);
len = LittleLong (msg->cursize + 8);
fwrite (&len, 4, 1, cls.demofile);
i = LittleLong(seq);
fwrite (&i, 4, 1, cls.demofile);
fwrite (&i, 4, 1, cls.demofile);
fwrite (msg->data, msg->cursize, 1, cls.demofile);
fflush (cls.demofile);
}
void CL_WriteSetDemoMessage (void)
{
int len;
float fl;
byte c;
//Con_Printf("write: %ld bytes, %4.4f\n", msg->cursize, realtime);
if (!cls.demorecording)
return;
fl = LittleFloat((float)realtime);
fwrite (&fl, sizeof(fl), 1, cls.demofile);
c = dem_set;
fwrite (&c, sizeof(c), 1, cls.demofile);
len = LittleLong(cls.netchan.outgoing_sequence);
fwrite (&len, 4, 1, cls.demofile);
len = LittleLong(cls.netchan.incoming_sequence);
fwrite (&len, 4, 1, cls.demofile);
fflush (cls.demofile);
}
/*
====================
CL_Record_f
record <demoname> <server>
====================
*/
void CL_Record_f (void)
{
int c;
char name[MAX_OSPATH];
sizebuf_t buf;
uchar buf_data[MAX_MSGLEN];
int n, i, j;
char *s;
entity_t *ent;
entity_state_t *es, blankes;
player_info_t *player;
extern char gamedirfile[];
int seq = 1;
c = Cmd_Argc();
if (c != 2)
{
Con_Printf ("record <demoname>\n");
return;
}
if (cls.state != ca_active) {
Con_Printf ("You must be connected to record.\n");
return;
}
if (cls.demorecording)
CL_Stop_f();
sprintf (name, "%s/%s", com_gamedir, Cmd_Argv(1));
//
// open the demo file
//
COM_DefaultExtension (name, ".qwd");
cls.demofile = fopen (name, "wb");
if (!cls.demofile)
{
Con_Printf ("ERROR: couldn't open.\n");
return;
}
Con_Printf ("recording to %s.\n", name);
cls.demorecording = true;
/*-------------------------------------------------*/
// serverdata
// send the info about the new client to all connected clients
memset(&buf, 0, sizeof(buf));
buf.data = buf_data;
buf.maxsize = sizeof(buf_data);
// send the serverdata
MSG_WriteByte (&buf, svc_serverdata);
MSG_WriteLong (&buf, PROTOCOL_VERSION);
MSG_WriteLong (&buf, cl.servercount);
MSG_WriteString (&buf, gamedirfile);
if (cl.spectator)
MSG_WriteByte (&buf, cl.playernum | 128);
else
MSG_WriteByte (&buf, cl.playernum);
// send full levelname
MSG_WriteString (&buf, cl.levelname);
// send the movevars
MSG_WriteFloat(&buf, movevars.gravity);
MSG_WriteFloat(&buf, movevars.stopspeed);
MSG_WriteFloat(&buf, movevars.maxspeed);
MSG_WriteFloat(&buf, movevars.spectatormaxspeed);
MSG_WriteFloat(&buf, movevars.accelerate);
MSG_WriteFloat(&buf, movevars.airaccelerate);
MSG_WriteFloat(&buf, movevars.wateraccelerate);
MSG_WriteFloat(&buf, movevars.friction);
MSG_WriteFloat(&buf, movevars.waterfriction);
MSG_WriteFloat(&buf, movevars.entgravity);
// send music
MSG_WriteByte (&buf, svc_cdtrack);
MSG_WriteByte (&buf, 0); // none in demos
// send server info string
MSG_WriteByte (&buf, svc_stufftext);
MSG_WriteString (&buf, va("fullserverinfo \"%s\"\n", cl.serverinfo) );
// flush packet
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
// soundlist
MSG_WriteByte (&buf, svc_soundlist);
MSG_WriteByte (&buf, 0);
n = 0;
s = cl.sound_name[n+1];
while (*s) {
MSG_WriteString (&buf, s);
if (buf.cursize > MAX_MSGLEN/2) {
MSG_WriteByte (&buf, 0);
MSG_WriteByte (&buf, n);
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
MSG_WriteByte (&buf, svc_soundlist);
MSG_WriteByte (&buf, n + 1);
}
n++;
s = cl.sound_name[n+1];
}
if (buf.cursize) {
MSG_WriteByte (&buf, 0);
MSG_WriteByte (&buf, 0);
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
// modellist
MSG_WriteByte (&buf, svc_modellist);
MSG_WriteByte (&buf, 0);
n = 0;
s = cl.model_name[n+1];
while (*s) {
MSG_WriteString (&buf, s);
if (buf.cursize > MAX_MSGLEN/2) {
MSG_WriteByte (&buf, 0);
MSG_WriteByte (&buf, n);
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
MSG_WriteByte (&buf, svc_modellist);
MSG_WriteByte (&buf, n + 1);
}
n++;
s = cl.model_name[n+1];
}
if (buf.cursize) {
MSG_WriteByte (&buf, 0);
MSG_WriteByte (&buf, 0);
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
// spawnstatic
for (i = 0; i < cl.num_statics; i++) {
ent = cl_static_entities + i;
MSG_WriteByte (&buf, svc_spawnstatic);
for (j = 1; j < MAX_MODELS; j++)
if (ent->model == cl.model_precache[j])
break;
if (j == MAX_MODELS)
MSG_WriteByte (&buf, 0);
else
MSG_WriteByte (&buf, j);
MSG_WriteByte (&buf, ent->frame);
MSG_WriteByte (&buf, 0);
MSG_WriteByte (&buf, ent->skinnum);
for (j=0 ; j<3 ; j++)
{
MSG_WriteCoord (&buf, ent->origin[j]);
MSG_WriteAngle (&buf, ent->angles[j]);
}
if (buf.cursize > MAX_MSGLEN/2) {
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
}
// spawnstaticsound
// static sounds are skipped in demos, life is hard
// baselines
memset(&blankes, 0, sizeof(blankes));
for (i = 0; i < MAX_EDICTS; i++) {
es = cl_baselines + i;
if (memcmp(es, &blankes, sizeof(blankes))) {
MSG_WriteByte (&buf,svc_spawnbaseline);
MSG_WriteShort (&buf, i);
MSG_WriteByte (&buf, es->modelindex);
MSG_WriteByte (&buf, es->frame);
MSG_WriteByte (&buf, es->colormap);
MSG_WriteByte (&buf, es->skinnum);
for (j=0 ; j<3 ; j++)
{
MSG_WriteCoord(&buf, es->origin[j]);
MSG_WriteAngle(&buf, es->angles[j]);
}
if (buf.cursize > MAX_MSGLEN/2) {
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
}
}
MSG_WriteByte (&buf, svc_stufftext);
MSG_WriteString (&buf, va("cmd spawn %d 0\n", cl.servercount) );
if (buf.cursize) {
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
// send current status of all other players
for (i = 0; i < MAX_CLIENTS; i++) {
player = cl.players + i;
MSG_WriteByte (&buf, svc_updatefrags);
MSG_WriteByte (&buf, i);
MSG_WriteShort (&buf, player->frags);
MSG_WriteByte (&buf, svc_updateping);
MSG_WriteByte (&buf, i);
MSG_WriteShort (&buf, player->ping);
MSG_WriteByte (&buf, svc_updatepl);
MSG_WriteByte (&buf, i);
MSG_WriteByte (&buf, player->pl);
MSG_WriteByte (&buf, svc_updateentertime);
MSG_WriteByte (&buf, i);
MSG_WriteFloat (&buf, player->entertime);
MSG_WriteByte (&buf, svc_updateuserinfo);
MSG_WriteByte (&buf, i);
MSG_WriteLong (&buf, player->userid);
MSG_WriteString (&buf, player->userinfo);
if (buf.cursize > MAX_MSGLEN/2) {
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
}
// send all current light styles
for (i=0 ; i<MAX_LIGHTSTYLES ; i++)
{
MSG_WriteByte (&buf, svc_lightstyle);
MSG_WriteByte (&buf, (char)i);
MSG_WriteString (&buf, cl_lightstyle[i].map);
}
for (i = 0; i < MAX_CL_STATS; i++) {
MSG_WriteByte (&buf, svc_updatestatlong);
MSG_WriteByte (&buf, i);
MSG_WriteLong (&buf, cl.stats[i]);
if (buf.cursize > MAX_MSGLEN/2) {
CL_WriteRecordDemoMessage (&buf, seq++);
SZ_Clear (&buf);
}
}
/*
MSG_WriteByte (&buf, svc_updatestatlong);
MSG_WriteByte (&buf, STAT_TOTALMONSTERS);
MSG_WriteLong (&buf, cl.stats[STAT_TOTALMONSTERS]);
MSG_WriteByte (&buf, svc_updatestatlong);
MSG_WriteByte (&buf, STAT_SECRETS);
MSG_WriteLong (&buf, cl.stats[STAT_SECRETS]);
MSG_WriteByte (&buf, svc_updatestatlong);
MSG_WriteByte (&buf, STAT_MONSTERS);
MSG_WriteLong (&buf, cl.stats[STAT_MONSTERS]);
*/
// get the client to check and download skins
// when that is completed, a begin command will be issued
MSG_WriteByte (&buf, svc_stufftext);
MSG_WriteString (&buf, va("skins\n") );
CL_WriteRecordDemoMessage (&buf, seq);
CL_WriteSetDemoMessage();
}
/*
====================
CL_ReRecord_f
record <demoname>
====================
*/
void CL_ReRecord_f (void)
{
int c;
char name[MAX_OSPATH];
c = Cmd_Argc();
if (c != 2)
{
Con_Printf ("rerecord <demoname>\n");
return;
}
if (!*cls.servername) {
Con_Printf("No server to reconnect to...\n");
return;
}
if (cls.demorecording)
CL_Stop_f();
sprintf (name, "%s/%s", com_gamedir, Cmd_Argv(1));
//
// open the demo file
//
COM_DefaultExtension (name, ".qwd");
cls.demofile = fopen (name, "wb");
if (!cls.demofile)
{
Con_Printf ("ERROR: couldn't open.\n");
return;
}
Con_Printf ("recording to %s.\n", name);
cls.demorecording = true;
CL_Disconnect();
CL_BeginServerConnect();
}
/*
====================
CL_PlayDemo_f
play [demoname]
====================
*/
void CL_PlayDemo_f (void)
{
char name[256];
if (Cmd_Argc() != 2)
{
Con_Printf ("play <demoname> : plays a demo\n");
return;
}
//
// disconnect from server
//
CL_Disconnect ();
//
// open the demo file
//
strcpy (name, Cmd_Argv(1));
COM_DefaultExtension (name, ".qwd");
Con_Printf ("Playing demo from %s.\n", name);
COM_FOpenFile (name, &cls.demofile);
if (!cls.demofile)
{
Con_Printf ("ERROR: couldn't open.\n");
cls.demonum = -1; // stop demo loop
return;
}
cls.demoplayback = true;
cls.state = ca_demostart;
Netchan_Setup (&cls.netchan, net_from, 0);
realtime = 0;
}
/*
====================
CL_FinishTimeDemo
====================
*/
void CL_FinishTimeDemo (void)
{
int frames;
float time;
cls.timedemo = false;
// the first frame didn't count
frames = (host_framecount - cls.td_startframe) - 1;
time = Sys_DoubleTime() - cls.td_starttime;
if (!time)
time = 1;
Con_Printf ("%d frames %5.1f seconds %5.1f fps\n", frames, time, frames/time);
}
/*
====================
CL_TimeDemo_f
timedemo [demoname]
====================
*/
void CL_TimeDemo_f (void)
{
if (Cmd_Argc() != 2)
{
Con_Printf ("timedemo <demoname> : gets demo speeds\n");
return;
}
CL_PlayDemo_f ();
if (cls.state != ca_demostart)
return;
// 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 = 0;
cls.td_startframe = host_framecount;
cls.td_lastframe = -1; // get a new message this frame
}