static bool:bHasLaser[MAXPLAYERS+1] = false;
static Float:fLastCommandUseTime[MAXPLAYERS+1]  = 0.0;

static Handle:cvarDelay = INVALID_HANDLE;

public OnPluginStart()
{
    cvarDelay = CreateConVar("lasersight_delay", "10.0", "cool down' ", FCVAR_NOTIFY);
}

public OnMapStart()
{
    AddCommandListener(CommandListener);
}

public Action:CommandListener(client, const String:command[], args)
{
    if (StrEqual(command, "impulse 201", false))
    {
        if (IsCommandCoolingDown(client))
        {
            ReplyToCommand(client, "Хехе, жди ещё %i секунд", RoundFloat(GetConVarFloat(cvarDelay)));
            return Plugin_Handled;
        }
        if (bHasLaser[client])
        {
            CheatCommand(client, "upgrade_remove", "LASER_SIGHT");
            bHasLaser[client] = false;
            fLastCommandUseTime[client] = GetEngineTime();
        }
        else
        {
            CheatCommand(client, "upgrade_add", "LASER_SIGHT");
            bHasLaser[client] = true;
            fLastCommandUseTime[client] = GetEngineTime();
        }
        fLastCommandUseTime[client] = GetEngineTime();
    }
    return Plugin_Continue;
}

static bool:IsCommandCoolingDown(any:client)
{
    if (fLastCommandUseTime[client] == 0.0)
    {
        return false;
    }
    return ((GetEngineTime() - fLastCommandUseTime[client]) < GetConVarFloat(cvarDelay));
}

stock CheatCommand(client, const String:command[], const String:arguments[])
{
    if (!client) return;
    new admindata = GetUserFlagBits(client);
    SetUserFlagBits(client, ADMFLAG_ROOT);
    new flags = GetCommandFlags(command);
    SetCommandFlags(command, flags & ~FCVAR_CHEAT);
    FakeClientCommand(client, "%s %s", command, arguments);
    SetCommandFlags(command, flags);
    SetUserFlagBits(client, admindata);
}