On 2014-07-30 11:54 AM, scott wrote:>> 
http://en.wikipedia.org/wiki/2048_(video_game)
 >
 > It's open source, so I can answer my own question, the value of the new
 > tile that is randomly generated is chosen thus:
 >
 > var value = Math.random() < 0.9 ? 2 : 4;
 >
 > So it's a 90% chance of a 2, 10% chance of a 4. Interesting.

Yes, interesting indeed.  My implementation makes it a 50-50 chance of 
getting either a 2 or a 4.  Perhaps I should change my game to match.

 >
 >> Looks very good - nice work!
 >> I'd be interested to see how it was written, and what the AI logic is.
 >> How does the game determine what direction to slide the tiles?
 >> Generating the
 >> highest value tile, or combining the most tiles? (I'm leaning toward
 >> the latter)
 >
 > Yes I wondered that too, it looks like the answer lies in the "move"
 > function of "game_manager.js", but I don't have time to try and
 > understand it right now.
 >

I don't believe the open source implementation above includes a solver.

My algorithm is based on the one here:

http://2048strategy.com/2048-strategy/

This web page, however, doesn't include details on how to calculate 
monotonicity and smoothness.  In my implementation, monotonicity is 
weighted by the values of the cells and the smoothness uses a different 
algorithm.  It's pretty effective, though.

David Buck

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