public void BuyFuel()
{
if (currentMoney >= fuelCost)
{
SoundManager.PlaySound(SoundManager.Sound.Buy);
currentMoney -= fuelCost;
moneyText.text = currentMoney.ToString();
fuelCost = fuelCost * 5;
fuelUpText.text = "$ " + fuelCost.ToString();
fuelManager.UpgradeFuel();
}
else
{
StartCoroutine(MoneyWarning(warning2Text));
}
}