"system crash!" in server log

Zaggy

<div class="IPBDescription">what does it mean?</div>Part from server log:
<!--quoteo--><div class='quotetop'>QUOTE </div><div class='quotemain'><!--quotec--><nickname> connected.
system crash!
system crash!
system crash!
system crash!
system crash!
Error: Exceeded maximum number of snapshots
Client disconnected (<ip>) Quit<!--QuoteEnd--></div><!--QuoteEEnd-->

CoTTon

Have that on both my servers. Dunno it doesn't affect game play / tickrate

Vitdom

Looks very serious! xD

Did a quick search in the .lua files and found this in \ns2\lua\Skulk.lua:549 (the only occurance) called by Player.lua Player:ComputeForwardVelocity
<!--c1--><div class='codetop'>CODE</div><div class='codemain'><!--ec1-->function Skulk:ConstrainMoveVelocity(moveVelocity)

    // allow acceleration in air for skulks  
    if not self:GetIsOnSurface() then
    
        local speedFraction = Clamp(self:GetVelocity():GetLengthXZ() / self:GetMaxSpeed(), 0, 1)
        speedFraction = 1 - (speedFraction * speedFraction)
        moveVelocity:Scale(speedFraction * Skulk.kAirAccelerationFraction)
        
        if self:GetVelocity():GetLengthXZ() > 30 then
            Print("system crash!")
        end
        
    end

end<!--c2--></div><!--ec2-->
Apparently someone is either speedhacking or breaking the skulk walljumping speed barrier! :)

No, but seriously. Something seems wrong since they added this print out. There appears to be an absolute speed limiter of 15 when the skulk is on a surface(including walljump?), but none when it's in the air. But this part is commented out with /* */ so it isn't enabled! So there is no real speed limiter for the skulk and you should in theory be able to wall jump + leap up to insane velocities.
<!--c1--><div class='codetop'>CODE</div><div class='codemain'><!--ec1-->// quick fix to prevent insane velocity values for skulk
function Skulk:OnClampSpeed(input, velocity)

    PROFILE("Skulk:OnClampSpeed")
    
    /*
    if self:GetIsOnSurface() then
    
        local moveSpeed = velocity:GetLength()
        if moveSpeed > 15 then
            velocity:Scale(15 / moveSpeed)            
        end
        
    end
    */
    
end<!--c2--></div><!--ec2-->
This is confusing, but hey at least it wasn't an actual "crash"... :P

CoTTon

Interesting. I'll reread my server logs

Zaggy

Thanks for finding that!
What a worthless error message, I'll try changing this to "Velocity exceeded 30 for player xyz!".
Edit:

Changed it to:
<!--c1--><div class='codetop'>CODE</div><div class='codemain'><!--ec1-->Print("WARNING: "+self:GetName()+ " exceeded the skulk speed limit of 30!")<!--c2--></div><!--ec2-->
Now to get a speedhacker to test this :>

FuhrerDarqueSyde

May also be useful to put in parenthesis the steamid in case you're not in server when it happens.

Zaggy

I get server/client differs when I use this, oh well..

Rothgar

You'd have to make it a mod or exclude the file in the consistency checker?

Zaggy

<!--quoteo(post=2055555:date=Jan 3 2013, 10:59 PM:name=Rothgar)--><div class='quotetop'>QUOTE (Rothgar @ Jan 3 2013, 10:59 PM) <a href="index.php?act=findpost&pid=2055555"><{POST_SNAPBACK}></a></div><div class='quotemain'><!--quotec-->You'd have to make it a mod or exclude the file in the consistency checker?<!--QuoteEnd--></div><!--QuoteEEnd-->

Derp, forgot about that, thanks.

ma$$a$$ter

just add some of ob bots - they break the speed limit all the time..