Submission of mini project 4

[SungwooPark]

This change is

[kailevy]

Reviewed 12 of 12 files at r1.
Review status: all files reviewed at latest revision, 8 unresolved discussions.

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game_model.py, line 57 [r1] (raw file):
This control sequence could be simplified, simply select a type and map it to the filename instead of continuous if-elses

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game_model.py, line 203 [r1] (raw file):
Brick breaker?

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motherload.py, line 61 [r1] (raw file):
Very hairy.. any ways to simplify this? And collisions should be separate from view (mentioned in writeup)

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motherload.py, line 108 [r1] (raw file):
Doing a lot of string comparisons may be slow, could store colors as ints instead

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motherload.py, line 274 [r1] (raw file):
Really?

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motherload.py, line 331 [r1] (raw file):
This stuff could go into a controller instead of main()

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motherload.py, line 373 [r1] (raw file):
I encountered a bug trying to move left several times and being unable to

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writeup.pdf, line 0 [r1] (raw file):
The bit about the expanding world is interesting, would like to see your solution implemented.

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