public void UpgradeFirePower()
{
if (prefsControl.GetCurrentGameMoney() >= FIRE_POWER)
{
prefsControl.SetFirePower(prefsControl.GetFirePower() + 1);
prefsControl.SetCurrentGameMoney(prefsControl.GetCurrentGameMoney() - FIRE_POWER);
CalculateLevel();
}
else
{
error.gameObject.SetActive(true);
}
}