By Thomas W•
Sometimes you jump around the code too quickly to be able to follow it. For example in the last video at 16:55 min there's a cut in the video where you say you want to draw the background. But then the video jumps to the bottom of the code and we cannot see what you actually coded. Also, it looks like you changed something in the code which you did not show. At minute 7:55, you write the updateScore() method without a parameter, but at minute 13:32 it is suddenly shown as updateScore(alive[y]).
Maybe as a result (?), the code does not work. The spaceship cannot move to the right, only the highest rows of space invaders can get hit and disappears. So there are quite a few errors in the game.
Maybe it helps if you provide the students with your code at the end.
Also, the time we have in the cloud workspace is not enough to be able to finish the entire project.
By Stacey M•
EXTREMELY difficult to follow along for a beginner. May want to consider upgrading this lesson to an "intermediate" level.