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Mercury's solution to the speed cheat problem, test the hell out of it!

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Joseph Carter 2000-01-07 05:04:18 +00:00
parent ef8e59610a
commit 9e47ecdf16
2 changed files with 37 additions and 30 deletions
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1
qw_server/server.h
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@ -189,6 +189,7 @@ typedef struct client_s
int chokecount; int chokecount;
int delta_sequence; // -1 = no compression int delta_sequence; // -1 = no compression
netchan_t netchan; netchan_t netchan;
double frame_time_1, frame_time_2;
} client_t; } client_t;
// a client can leave the server in one of four ways: // a client can leave the server in one of four ways:

44
qw_server/sv_user.c
View file

@ -1363,37 +1363,43 @@ void SV_PreRunCmd(void)
SV_RunCmd SV_RunCmd
=========== ===========
*/ */
void SV_RunCmd (usercmd_t *ucmd) void SV_RunCmd (usercmd_t *ucmd, qboolean inside)
{ {
edict_t *ent; edict_t *ent;
int i, n; int i, n;
int oldmsec; int oldmsec;
double tmp_time;
//MBD: The id client limits msec to 100. if (!inside) {
if (ucmd->msec > 100) { oldmsec = ucmd->msec;
Con_Printf("Speed cheat detected for player %s\n", tmp_time = realtime - host_client->frame_time_2;
host_client->name); tmp_time /= 2;
// We want to punish people that tries to do this. Let us ucmd->msec = tmp_time * 1000;
// set their fps to 1000 if (ucmd->msec > oldmsec)
ucmd->msec = 1; ucmd->msec = oldmsec;
// This has the added benefit that the server eventually will
// KICK the player, calling him a timedemo cheater. if (abs(oldmsec - ucmd->msec) > 10) {
// Neat, huh? :-) printf("tmp_time: %f, realtime: %f, frame_time_1: %f\n",
tmp_time, realtime, host_client->frame_time_1);
printf("oldmsec: '%d', msec: '%d'\n", oldmsec,
ucmd->msec);
} }
host_client->frame_time_2 = host_client->frame_time_1;
host_client->frame_time_1 = realtime;
cmd = *ucmd; cmd = *ucmd;
// chop up very long commands // chop up very long commands
if (cmd.msec > 50) if (cmd.msec > 50) {
{
oldmsec = ucmd->msec; oldmsec = ucmd->msec;
cmd.msec = oldmsec/2; cmd.msec = oldmsec/2;
SV_RunCmd (&cmd); SV_RunCmd (&cmd, 1);
cmd.msec = oldmsec/2; cmd.msec = oldmsec/2;
cmd.impulse = 0; cmd.impulse = 0;
SV_RunCmd (&cmd); SV_RunCmd (&cmd, 1);
return; return;
} }
}
if (!sv_player->v.fixangle) if (!sv_player->v.fixangle)
VectorCopy (ucmd->angles, sv_player->v.v_angle); VectorCopy (ucmd->angles, sv_player->v.v_angle);
@ -1651,15 +1657,15 @@ void SV_ExecuteClientMessage (client_t *cl)
{ {
while (net_drop > 2) while (net_drop > 2)
{ {
SV_RunCmd (&cl->lastcmd); SV_RunCmd (&cl->lastcmd, 0);
net_drop--; net_drop--;
} }
if (net_drop > 1) if (net_drop > 1)
SV_RunCmd (&oldest); SV_RunCmd (&oldest, 0);
if (net_drop > 0) if (net_drop > 0)
SV_RunCmd (&oldcmd); SV_RunCmd (&oldcmd, 0);
} }
SV_RunCmd (&newcmd); SV_RunCmd (&newcmd, 0);
SV_PostRunCmd(); SV_PostRunCmd();
} }