Hello this looks good and clean
You wanna use PostThinkPost, because player animations are updated in PostThink, when using Just think all your animation checks for l4d1 are 1tick behind.
PHP Code:
public void OnClientPutInServer(int client)
{
if (!bIsL4D1)
{
return;
}
SDKHook(client, SDKHook_PostThinkPost, OnThink);
}
Keep it up.