OpenTTD

Tasklist

FS#4313 - Limit amount of desert

Attached to Project: OpenTTD
Opened by George (George) - Sunday, 19 December 2010, 00:02 GMT
Last edited by Remko Bijker (Rubidium) - Monday, 20 December 2010, 15:04 GMT
Type Feature Request
Category Core
Status New
Assigned To No-one
Operating System Windows
Severity High
Priority Normal
Reported Version trunk
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 1
Private No

Details

R21503

OTTD generates much more desert tiles in comparison to TTDP. Here is the typical sample. The percentage of desert tiles should be reduced
   OTTD.png (21.1 KiB)
   TTDP.png (22.8 KiB)
This task depends upon

Comment by George (George) - Sunday, 19 December 2010, 00:02 GMT
Also amount of cactuses in desert is lower
Comment by Zdeněk Sojka (SmatZ) - Sunday, 19 December 2010, 12:52 GMT
I tried both terrain generators, and I can't reproduce the behaviour you described. Perhaps try setting different generator parameters.
Comment by Christian Hattemer (Krille) - Sunday, 19 December 2010, 15:16 GMT
r21539

It happens with e.g. these options.
Comment by Remko Bijker (Rubidium) - Sunday, 19 December 2010, 21:42 GMT
Using different algorithms and settings makes OpenTTD behave very differently from Transport Tycoon Deluxe. That's exactly what they are meant to do.

The "rules" for when something becomes desert or rainforest is still the same:
* desert is everything not close to water or tiles at height 4 or higher
* rainforest is everything not close to desert.

So, when you generate a low map, then lots of the map will automatically become desert. Transport Tycoon Deluxe generated higher maps which gives you more places with rainforests.
Comment by George (George) - Monday, 20 December 2010, 01:40 GMT
What settings should I choose to get the map similar to TTDP's one?

Also, this
> * desert is everything not close to water or tiles at height 4 or higher
sounds strange, because there are map areas in TTDP game, that much this criteria, but are not the desert. So this rule is different to TTDP? If no - why do I get the different result?
Comment by George (George) - Monday, 20 December 2010, 01:40 GMT
My config if it would help
Comment by George (George) - Monday, 20 December 2010, 01:44 GMT
Even trying original map generating algorithm in OTTD i do not get the map, looking like TTDP.
Comment by George (George) - Monday, 20 December 2010, 01:45 GMT
Also "variety distribution" option increases areas of desert
Comment by Remko Bijker (Rubidium) - Monday, 20 December 2010, 09:22 GMT
With the "default" Transport Tycoon Deluxe settings I'm getting similar maps (roughly same amount of desert, i.e. some 40-ish% of desert) compared to your TTDPatch map. Although, TTDPatch has its own new map generator as well. That on itself means that OpenTTD might behave differently and still is working like Transport Tycoon Deluxe, just not like TTDPatch. Not working 100% like TTDPatch is not an issue at all as we never pretended to be a game based on TTDPatch, and as such don't try to implement everything from TTDPatch.
Comment by George (George) - Monday, 20 December 2010, 10:10 GMT
We are getting away from the original question. It was not why OTTD and TTDP generators are different, but why there is so much desert and how to provide less of it. "The percentage of desert tiles should be reduced" to be exact.
As you said, original map generator in OTTD generates less than 40% desert, while OTTD map generator provides much more desert. Would it be possible to reduce the amount of desert generated to the this < 40% level? May be somehow to improve the rule
> * desert is everything not close to water or tiles at height 4 or higher
May be not apply it if there is 40% desert already?
Comment by Alberth (Alberth) - Monday, 20 December 2010, 15:22 GMT
Why must there be less desert?

It makes that tropical is a more different climate, with large stretches of nothings. If you want a more filled climate, play any other climate.
Comment by George (George) - Tuesday, 21 December 2010, 00:53 GMT
> Why must there be less desert?

Because it was like that in TTDP and TTD.
The main thing, that I do not like with it, that in TTDP desert was an area, and in OTTD it is a layer between sea level and rain forest level (so a road from sea shore to forest crosses desert). This flooded style of desert annoys me :( see the TTDP.png in the first post - the desert is large there, but it is an area, not the layer.
Comment by Michael Blunck (mb) - Tuesday, 21 December 2010, 16:14 GMT
@George,

is that "TTDPatch map" generated with

experimentalfeatures.newterraingen off

?
Comment by George (George) - Wednesday, 22 December 2010, 01:29 GMT
No
Comment by George (George) - Wednesday, 22 December 2010, 01:33 GMT
Could TTDP's newterraingen code for desert generation be used in OTTD?
Comment by Sven R. Kunze (srkunze) - Friday, 12 February 2016, 10:12 GMT
I agree with George on this issue. I have beautiful memories of sub-tropical terrain type. It was the contrast that made it special and very entertaining and challenging.

When generating a map with OpenTTD 1.5, huge and mountainous rain-forests are not possible anymore. Besides the 7-tiles-wide band at the shore looks quite artificial. :(


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