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The real speed cheat fix!

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This commit is contained in:
Zephaniah E. Hull 2000-01-19 16:35:26 +00:00
parent 34391442c7
commit b5034f28d6
3 changed files with 28 additions and 69 deletions
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4
qw_server/server.h
View file

@ -193,8 +193,8 @@ typedef struct client_s
int delta_sequence; // -1 = no compression
int ping;
netchan_t netchan;
int msecs[MAX_MSECS], msec_count, msec_head, msec_total, msec_pool;
double frame_time;
int msecs, msec_cheating;
double last_check;
} client_t;
// a client can leave the server in one of four ways:

10
qw_server/sv_main.c
View file

@ -714,13 +714,9 @@ void SVC_DirectConnect (void)
newcl->sendinfo = true;
// QuakeForge stuff.
for (i=0; i<MAX_MSECS; i++)
newcl->msecs[i] = 0;
newcl->msec_count = 0;
newcl->msec_head = 0;
newcl->msec_total = 0;
newcl->frame_time = realtime;
newcl->msecs = 0;
newcl->msec_cheating = 0;
newcl->last_check = realtime;
}
int Rcon_Validate (void)

83
qw_server/sv_user.c
View file

@ -1368,6 +1368,7 @@ void SV_PreRunCmd(void)
/* maximum msec offset we will allow before penalizing the player */
#define POOLMAX 150
#define CHECK_TIME 10
/*
===========
SV_RunCmd
@ -1376,71 +1377,33 @@ SV_RunCmd
void SV_RunCmd (usercmd_t *ucmd, qboolean inside)
{
edict_t *ent;
int i, n, oldmsec, idealmsec;
int i, n, oldmsec;
double tmp_time;
// To prevent a infinite loop
if (!inside) {
oldmsec = ucmd->msec;
// Calculate the ideal msec.
tmp_time = realtime - host_client->frame_time;
idealmsec = tmp_time * 1000;
host_client->msecs += ucmd->msec;
if (loss)
idealmsec /= (loss + 1);
if ((tmp_time = realtime - host_client->last_check) >= CHECK_TIME) {
tmp_time *= 1000;
if (host_client->msecs > tmp_time) {
host_client->msec_cheating++;
SV_BroadcastPrintf(PRINT_HIGH,
va("Err, %s may be CHEATING! %d %f %d\n",
host_client->name, host_client->msecs, tmp_time,
host_client->msec_cheating));
// Cap it at a max of 250 msec though..
idealmsec = min(idealmsec, 250);
idealmsec = max(idealmsec, 10);
if (host_client->msec_cheating >= 2) {
SV_BroadcastPrintf(PRINT_HIGH,
va("*WHACK* %s (%s) has been caught cheating!\n",
host_client->name, NET_AdrToString(host_client->netchan.remote_address)));
SV_DropClient(host_client);
}
}
host_client->msec_total -= host_client->msecs[host_client->msec_head];
host_client->msec_total += idealmsec;
host_client->msecs[host_client->msec_head] = idealmsec;
host_client->msec_head = (host_client->msec_head + 1) % MSECSIZE;
host_client->msec_count = min(MSECSIZE, host_client->msec_count + 1);
host_client->msec_pool += idealmsec - oldmsec;
#if 0
if (abs(host_client->msec_pool) > POOLMAX)
{
printf("tmp_t: %f, realt: %f, frame_t: %f, loss: %d, total: %d\n",
tmp_time, realtime, host_client->frame_time, loss,
host_client->msec_total);
/*
printf("%3d %3d %3d %3d %3d ",
host_client->msecs[0],
host_client->msecs[1],
host_client->msecs[2],
host_client->msecs[3],
host_client->msecs[4]);
*/
if (abs(host_client->msec_pool) > POOLMAX)
printf("*** ");
else
printf(" ");
printf("oldmsec: %d, msec: %d, pool: %d\n", oldmsec,
idealmsec, host_client->msec_pool);
host_client->msecs = 0;
host_client->last_check = realtime;
}
#endif
if (abs(host_client->msec_pool) > POOLMAX)
{
/* if our pool exceeds POOLMAX msec, empty it into msec. This
should cause the client to 'jitter' back a bit as his
position is reset. */
ucmd->msec = oldmsec - host_client->msec_pool;
host_client->msec_pool = 0;
} else
{
/* trust the client - if he's cheating, his pool will overflow
anyway within a couple of packets. */
ucmd->msec = oldmsec;
}
host_client->frame_time = realtime;
}
cmd = *ucmd;
@ -1712,13 +1675,13 @@ void SV_ExecuteClientMessage (client_t *cl)
if (net_drop < 20) {
while (net_drop > 2) {
SV_RunCmd (&cl->lastcmd, 1);
SV_RunCmd (&cl->lastcmd, 0);
net_drop--;
}
if (net_drop > 1)
SV_RunCmd (&oldest, 1);
SV_RunCmd (&oldest, 0);
if (net_drop > 0)
SV_RunCmd (&oldcmd, 1);
SV_RunCmd (&oldcmd, 0);
}
SV_RunCmd (&newcmd, 0);