pygame: WallBouncing_YI.py

Classwork:
Continue working on the program, WallBouncing_YI.py.
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Home work: Keep on reading chapter 17.
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Visit edmodo.com to answer the following questions from your reading material:
1. If a block is moving DOWNLEFT, how is the x coordinate behaving? how is the y coordinate behaving?
2. If a block is moving DOWNRIGHT, how is the x coordinate behaving? how is the y coordinate behaving?
3. If a block is moving UPLEFT, how is the x coordinate behaving? how is the y coordinate behaving?
4. If a block is moving UPRIGHT, how is the x coordinate behaving? how is the y coordinate behaving?
5. If a block is moving UPRIGHT, when would it bounce off the top of the window?
6. If a block is moving UPRIGHT, when would it bounce off the right side of the window?
7. If a block is moving DOWNRIGHT, when would it bounce off the bottom of the window?
8. If a block is moving UPLEFT, when would it bounce off the left side of the window?
9. Why did the author pick numbers 1, 3, 7, and 9 for the constants DOWNLEFT, DOWNRIGHT, UPLEFT AND UPRIGHT?

Think about your next program. It will be related to the animation.py but with a simple maze.
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