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

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 (IsCommandCoolingDown(client))
    {
        ReplyToCommand(client, "You cannot use the laser toggle command again so quickly, wait %i seconds", 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_Handled;
}

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);
}