Powerups

 Another moment of distress with programming logic, for me. 

I have been trying to figure out how to make the keybrick appear,

all to no avail. There is a complex tier/color system in place

and my key brick doesn't change. Finally broke down and looked 

up what one clever person had done from YouTube.  He waits for a brick

to be desroyed in play and introduces the key brick in its place.

Programming, not code: I need to remind myself.

Not really the assignement, though. the brick should appear on level

spawning!! I did gain the idea that 'powerup' needs to become 'powerups'

so that the key powerup can descend like the first one. 

That kind of day...