[FreeCiv-Java] Re: question about dio_get_uint32

[Raimar Falke <rf13@xxxxxxxxxxxxxxxxx>]

On Wed, May 28, 2003 at 08:46:23AM +0000, David Chen wrote:
> hi,
>  although I've noticed that this emailing list has had very little 
> activitiy lately other than junk mails, hopefully someone will pick up this 
> message.

> I am builiding a java client for freeciv 1.14.0 (I gave up on trying
> to keeping up to date with the latest development and went for a
> stable version) My question is about ./common/dataio.dio_get_uint32.
> Does freeciv actually use unsigned 4 byte ints?  More broadly, is it
> safe to assume that I can use java int (signed, 4 bytes) to read in
> all the ints from all types of packets?

So you are asking if you have to expect values in the range 2^31 to
2^31-1? The answer is yes. At least here
  dio_put_uint32(&dout, pinfo->embassy);
  dio_put_uint32(&dout, pinfo->gives_shared_vision);
you can get a value where the highest bit is set. These are bit fields
indexed by player number. These could be converted to BV_* which may
make your work easier.

        Raimar

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