So, I've been working on yet another feature: Skid marks that appear on landing runways after numerous planes touch down on them. I've always thought that the OTTD runways were too clean, since all of the real-world runways I've seen have some form of skid marks on them where the rubber meets the road.
Some examples: http://3.bp.blogspot.com/_q1QF69gk684/R ... runway.JPG
http://www.thehindu.com/multimedia/dyna ... 63162g.jpg
http://thumb1.shutterstock.com/display_ ... 890260.jpg
(Or go to Google Earth and view imagery of your airport of choice
Even model airports have them: http://4by8airports.com/model-airport-i ... ion-6d.jpg
http://4by8airports.com/model-airport-i ... ion-4b.jpg
And now OTTD can have them:
, this new feature relies on a patch that has yet to be committed to trunk: https://bugs.openttd.org/task/6334
You'll need to apply it if you want to test the most recent grf build for yourself.
Each time an airplane touches down, there is a 50% chance that the animation frame will be advanced by one. Once the frame is high enough, skid marks begin to appear and grow until after several hundred landings when the touchdown point is nearly entirely black.
If you don't enjoy this feature, there is a parameter to turn it off.
There is one known issue with this feature: at Intercontinental airports, there is a small chance that an airplane landing at one landing point will make skid marks appear on the other landing runway. If both sets of runways are in heavy use, however, it is likely that this will go unnoticed. All other airports have a single landing runway and do not have this issue.