[freeciv-ai] (PR#9896) autosettler transformations

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=9896 >

> [per - Wed Sep 01 10:49:03 2004]:
> 
> Currently, in more advanced games, autosettlers transform every grassland
> tile into forest, including wheat into silk. While no doubt very
> environmental friendly (people were complaining the AI was a polluting
> pig), I am not sure this is a good idea, since forest only has 1 food, and
> cannot be irrigated or farmlanded.

The problem is in the AI weighting which must be giving too little
weight to food.  See city_tile_value().

There are a few other things that could be tweaked.  Ammortization of
the goodness value could happen faster.  Or we could have a minimum
improvement amount before an action is considered.

jason