[Ellie]

Hi. I'm using a L4D2 plugin that keeps reporting hundreds of the same error in the log. This:

L 03/07/2020 - 10:36:46: [SM] Exception reported: Entity 3 (3) is invalid
L 03/07/2020 - 10:36:46: [SM] Blaming: lastboss.smx
L 03/07/2020 - 10:36:46: [SM] Call stack trace:
L 03/07/2020 - 10:36:46: [SM]   [0] GetEntDataVector
L 03/07/2020 - 10:36:46: [SM]   [1] Line 903, D:\Steam\steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\scripting\lastboss.sp::AddVelocity
L 03/07/2020 - 10:36:46: [SM]   [2] Line 768, D:\Steam\steamapps\common\Left 4 Dead 2 Dedicated Server\left4dead2\addons\sourcemod\scripting\lastboss.sp::JumpingTimer

These are the sections the plugin is complaning about:

public Action:JumpingTimer(Handle:timer)
{
	if(form_prev == FORMFOUR && idBoss)
		AddVelocity(idBoss, GetConVarFloat(sm_lastboss_jumpheight_forth));
	else
		KillTimer(timer);
}

public AddVelocity(client, Float:zSpeed)
{
	if(g_iVelocity == -1) return;
	
	new Float:vecVelocity[3];
	GetEntDataVector(client, g_iVelocity, vecVelocity);
	vecVelocity[2] += zSpeed;
	
	TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, vecVelocity);
}

How can this be fixed? I would ask in the original thread, but the plugin author hasn't posted anything in the past 9 years.

[Ilusion9]

Just give us the plugin link. We need more info from the source code.

[Dragokas]

It's ztar's lastboss: https://forums.alliedmods.net/showthread.php?t=129013

Fast fix may be:

if(form_prev == FORMFOUR && idBoss)

=>

if( form_prev == FORMFOUR && idBoss && idBoss != DEAD && IsClientInGame(idBoss) && GetEntProp(idBoss, Prop_Send, "m_zombieClass") == CLASS_TANK )

BTW, what game do you use it on?

[Ellie]

Yes, that's the one. And I use it on both L4Ds. That error is making the logs unnecessarily large. I will try your suggestion now and report back. Thanks.


Edit:
Well people have been playing fo the past two days and that error hasn't appered again. That seems to have solved it. Thanks Drogakas