Mapview Zooming

[Andy04]

The Freeciv website is currently down, so I'll just post this here... Besides, this patch might need some testing before I submit it to rt...

Here comes an update of the zoom feature found in Teamciv. Use the numpad + or - to zoom. One zoomstep takes about one second, but will obviously take more on slower machines. The trident tileset takes less time than itsotrident.

The patch can be found here . Enjoy, and kill bugs

[Andy04]

Here's a screenshot...

[CapTVK]

That looks very interesting, how many zoomlevels does it support right now?

[Andy04]

There's currently 5 different zoom levels, ranging from 25% to 125% of the default tile-size. Zoom-out is the most useful, since the graphics get worse as they get bigger than the default.
There's no limit to the number of zoom-levels there could be, but with many zoom levels it will take a lot of time to get to the zoom-level you want. This is because the graphics are rescaled when you switch to another zoom level.

[CapTVK]

Five zoom levels sounds about right. Add to that isomap support in Freeciv (see below) and we're pretty close to reaching the Civ2 goal.

http://lists.complete.org/freeciv-dev@freeciv.org/2004/03/msg00031.html.gz

> Freeciv savegames are all text-based so there should be no bigendian
> bias. I dunno about civ2 savegames.

The script is only for map files, although I'm working on the savegames.

Civ2 maps, savegames and scenario files are all binary and, I assume, platform
dependant. I don't have a mac and a copy of civ2 to test this on. Plus I am
pulling out the terrain and river overlay by checking the high and low nybbles,
which is going to break (?) on a bigendian machine.

> Civ2 looks like it uses a "natural" coordinate system. To convert from
> natural to native coordinates you just divide the X value by 2 and round
> down (note this may break if you have a negative X value). This is what
> map_to_native_pos does (though it's optimized).

Good, cause that's what I did (and it seems to work).

> Seems like you probably want to use civ2 for the rulesetdir? And set
> other civ2 options from civ2.serv?

Since these are only maps, I was mostly interested in the terrain. I figure I
can always edit the file afterwards to use different settings.

only thing missing would be proper scenario support. The rulesets offer a lot of options already, but we're not there yet!

[Vasc]

Yes CVS has isomap support already. '/set topology 5'. Here is the help:

Topology
The map topology index
Two-dimensional maps can wrap at the north-south or
east-west edges, and use a cartesian or isometric
rectangular grid. See the manual for further explanation.

• 0 Flat Earth (unwrapped)
• 1 Earth (wraps E-W)
• 2 Uranus (wraps N-S)
• 3 Donut World (wraps N-S, E-W)
• 4 Flat Earth (isometric)
• 5 Earth (isometric)
• 6 Uranus (isometric)
• 7 Donut World (isometric)

I don't think Civ2 had the donut world maps. At least I cannot remember it. CivCTP did have something of the sort IIRC. BTW, you may see support for even more topologies soon.

[CapTVK]

Vasc,

No, Civ2 doesn't have donut maps. CtP did have it.

Could someone post some graphical representation for all
these topologies? Sometimes its difficult to comprehend the more exotic topologies.