Scratch

I can't figure out how to tell if the space bar is pressed while the sprite is over another sprite. If it isn't I need to add to a variable, if it is I need to add to another variable, and for all presses it needs to be added to yet another variable. So two variables are raised per space bar. Either General & Hit or General & Miss.

Any methods on how to do this would be appreciated.
Thanks!
JonnyX