Comments on: About Curve Lengths

By: Mucht

Mucht — Mon, 18 May 2009 19:41:40 +0000

Great post! Thanks for the info!

By: Hirundo

Hirundo — Thu, 14 May 2009 13:40:29 +0000

Excellent post, this information clarifies a lot. I have been digging further into the code regarding the following:

“Interesting fact is that the source code considers what we call a half diagonal tile as an entire tile.”

According to my interpretation of the code, it doesn’t use tiles as a unit in any way. Instead, it uses the number of vehicles between a curve as unit of measurement. So, trains with shorter wagons should be able to navigate corners faster. It may be worth the effort to do some testing in this regard.

By: dihedral

dihedral — Thu, 14 May 2009 10:04:46 +0000

very nice post indeed – good work Mark – also like your illustration there

By: davil

davil — Thu, 14 May 2009 06:15:47 +0000

That’s a very valuable information! So let’s forget about half the trainlength and stuff and remember to make any fast curves at least 13 tiles long (of course only if the train is that long).
For cargo trains that usually go below 160km/h the value is 5 tiles, no matter how long the train is. It also means that for slow trains in the early 1950s 1 or 2 tiles are enough. This makes building cheap money makers even easier

I think this should definitely make it into a wiki entry (both here and at openttd.org, e.g. in the game mechanics section), together with a small table stating the recommended minimum tiles for typical train types.

Thanks for your investigation!