Core: make movement behave with perceived friction

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blobs should accelerate and decelerate giving the impression of realistic
physical motion.

Original issue reported on code.google.com by morales....@gmail.com on 29 Nov 2007 at 4:29

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The game is eating so much of my CPU time I can't really fix this yet (or even
discern what's going on), but I'm going to try it in CLIC.

Original comment by zac...@gmail.com on 10 Dec 2007 at 10:15

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OK, we have the appearance of friction. Probably still some tuning is called 
for, but
it works.

Original comment by zac...@gmail.com on 12 Dec 2007 at 10:18

• Changed state: Fixed

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(Fixed @ r380)

Original comment by zac...@gmail.com on 12 Dec 2007 at 10:32