[Freeciv-Dev] Re: File save format: rivers?

[Jason Short <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

Miguel Farah wrote:
> I've finally got off my lazy ass to do the modifications my map2gif
> script requires to properly handle the rivers in V2 maps. I looked into
> saved files, and I found that the rivers are designated by a '2' in the
> n0?? lines. Looking a bit more, I noticed that the possible values
> indicated:
>
> 0: regular terrain
> 1: special 2 (oil, whale, fruit, etc.)
> 2: river
> 3: special 2 + river
> 4: as 0 + farmland
> 5: as 1 + farmland
> 6: as 2 + farmland
> 7: as 3 + farmland
> 8: as 0 + airbase
> 9: as 1 + airbase
>
> So, what would '10' (river + airbase) upto '15' (all the goodies) be
> written as in the .sav? Where is special 1? What I really need is to
> know that the "bit 2" is indeed what indicates if a river is present in
> a given square. Am I right?
Short answer: you are right.  Each bit represents one flag and it 
appears "bit 2" is the river bit.
The values are in hex, so 10-15 are represented as a-f (or maybe A-F).

jason