How to modify vehicle values

[aaron.strandberg]

Hi everybody, I am a newbe on this forum, but I play OpenTTD from a long time.
I am wondering if it is possible to modify values of the basic vehicles such as speed, capacity and so on.
If yes, could you explain me very well how to do that?

Thanks a lot

[TinyMusic]

Hi everybody, I am a newbe on this forum, but I play OpenTTD from a long time.
I am wondering if it is possible to modify values of the basic vehicles such as speed, capacity and so on.
If yes, could you explain me very well how to do that?

Thanks a lot

It's called making NewGRFs. I've never done it (since I can't draw or code), but you start reading this:
http://www.tt-wiki.net/wiki/NMLTutorial

[aaron.strandberg]

Where can I find the basic set of Vehicles?

[TinyMusic]

That would be the base graphics set that you are using, OpenGFX. I'm no expert, but you can find the code somewhere, edit it, and compile it as a NewGRF file.

[planetmaker]

That would be the base graphics set that you are using, OpenGFX. I'm no expert, but you can find the code somewhere, edit it, and compile it as a NewGRF file.

No, you can't do that with base sets. Base sets only contain graphics for the vehicles. All their properties are hard-coded within OpenTTD. And can be overridden or disabled by NewGRF code. For a minimal NewGRF which for instance just changes speed of a vehicle you can borrow exactly 0 bits from a base set.

The properties of the default vehicles are also described in the general NewGRF documentation (NFO or NML), though. And there's an NML tutorial, too as there are many projects on the DevZone