//Activate a powerup if there is a powerup in the input corresponding Slot.
private void ActivatePowerUp(int aSlot)
{
if (aSlot == 0)
{
m_PowerUp01.PlayEffect();
}
else if (aSlot == 1)
{
m_PowerUp02.PlayEffect();
}
m_PlayerUI.HidePowerUp(aSlot);
}