In this project you get to zap ghosts with a Ghost Blaster. They are invisible until they've been zapped. You can position the Ghost Blaster using the left and right arrow keys and you can produce a zap by pressing the space bar.

ASSIGNMENT:

Make the following alterations to the project:

1. Orient the Ghost Blaster so that it zaps sideways, either left to right or right to left.
2. Reduce the number of ghosts to nine and line them up vertically instead of horizontally along the edge opposite the Ghost Blaster.
3. Change the background to accommodate these changes.
4. Here's the tricky part: If a ghost is visible a zap should make the ghost disappear and if a ghost is invisible a zap should make the ghost become visible.