Collide with item, get fireball & shoot fire ball

Hi folks,

One of my students is trying to accomplish the following:

  1. Health level starts at 0.
  2. Cat touches banana, and gains 1 health point. Banana also disappears.
  3. Cat can now shoot fireball using spacebar (now that the banana is gone) and loses 1 health point the first time it shoots.
  4. Cat can continue shooting fireballs for as long as it wants.

Everything works except for #3 and #4. Could someone please have a look and let me know where we’re going wrong?

Thanks very much in advance!