[Pelipoika]

Like this duder



With timestamp:

https://youtu.be/x-Oj52C8jmc?t=30

[kadet.89]

Use frequency analysis. Trajectory of a player without lags is smooth. Trajectories of lagging players contain irregularities and jumps.This leads to high frequencies in the spectrum:


https://en.wikipedia.org/wiki/Discre...rier_transform
https://en.wikipedia.org/wiki/Fast_Fourier_transform

You don't have to implement it on your own, there are a lot of examples on the internet for C++. In relation to your problem you can google "walk spectrum analysis"

[404UserNotFound]

I literally just now discovered the existence of the listed functions below whilst browsing a thread about fake clients taking up player slots. Someone's snippet contained IsClientTimingOut which I thought was a very neat function. I checked it out on the API and I happened to notice all these functions.

• GetClientLatency
• GetClientAvgLatency
• GetClientDataRate
• GetClientAvgData
• GetClientAvgPackets
• GetClientAvgChoke
• GetClientAvgLoss

How long have these been in SourceMod?! Could any of these work for what you need Peli?

[sneaK]

Without going too far off topic, I wonder if some of those functions could be used to combat Fake Lag cheats.

[blaacky]

I use this method to catch a lot of laggers. It just freezes them for the time being until they stop lagging.

PHP Code:

int g_iRunCmdsPerSecond[MAXPLAYERS + 1];
int g_iBadSeconds[MAXPLAYERS + 1];
float g_fLastCheckTime[MAXPLAYERS + 1];
MoveType g_mLastMoveType[MAXPLAYERS + 1];

public Action OnPlayerRunCmd(int client, int &buttons, int &impulse, float vel[3], float angles[3], int &weapon, int &subtype, int &cmdnum, int &tickcount, int &seed, int mouse[2])
{
    float tickRate = 1.0 / GetTickInterval();
    g_iRunCmdsPerSecond[client]++;
    if(GetEngineTime() - g_fLastCheckTime[client] >= 1.0)
    {
        if(float(g_iRunCmdsPerSecond[client]) / tickRate <= 0.95)
        {
            if(++g_iBadSeconds[client] >= 3)
            {
                SetEntityMoveType(client, MOVETYPE_NONE);
            }
        }
        else
        {
            if(GetEntityMoveType(client) == MOVETYPE_NONE)
            {
                SetEntityMoveType(client, g_mLastMoveType[client]);
            }
            g_iBadSeconds[client] = 0;
        }
        
        g_fLastCheckTime[client] = GetEngineTime();
        g_iRunCmdsPerSecond[client] = 0;
    }
} 


It could be improved by doing the lag check in a timer instead of OnPlayerRunCmd

[hmmmmm]

Whats g_mLastMoveType used for and where is it set?

[blaacky]

Forgot that, right before that code I do

PHP Code:

if(GetEntityMoveType(client) != MOVETYPE_NONE)
            {
                g_mLastMoveType[client] = GetEntityMoveType(client);
            } 


Used to unfreeze the players by setting their movetype to their last used movetype, which is almost always MOVETYPE_WALK but can be others like MOVETYPE_LADDER, or MOVETYPE_FLY, or w/e else