Coding station graphics

krtaylor · Post by **krtaylor** » 17 Jul 2004 03:14

I'm assuming that's one of the issues delaying the Alpine set?

Patchman · Post by **Patchman** » 17 Jul 2004 03:51

No, he's just spending all of his spare time on his new stations set.

ChrisCF · Post by **ChrisCF** » 17 Jul 2004 13:32

I suppose he's seen all this action on the stations front here, and wants to get in there first

Saskia · Post by **Saskia** » 19 Jul 2004 08:45

Saskia wrote:
Akalamanaia wrote:it would be nice if ya could only make the passengers apperear when station got passengers waiting at it..
Planned for tonight

Didn't work

Josef, help me to be faster than MB

ChrisCF · Post by **ChrisCF** » 19 Jul 2004 11:22

In theory, getting different passenger numbers is exactly like different load states on wagons, though I've not tried it.

Patchman · Post by **Patchman** » 19 Jul 2004 14:40

Don't forget to set station prop. 10, the little/lots of cargo threshold.

Then it's as simple as this:

Code: Select all

# station ID 0 has 3 cargo amounts under 128 and one above
  136 * 13	 02 04 00 03 01 00 00 01 00 02 00 03 00

Have a look at the newstat.zip in the newgrfdemo folder at the source code site.

Bernhard · Post by **Bernhard** » 20 Jul 2004 05:43

sorry, asked for 1000 times, i guess

can you give me a link to that site Patchman?

Patchman · Post by **Patchman** » 20 Jul 2004 06:01

http://www.ttdpatch.net/src/newgrfdemo/

Not all of the files there work with recent alphas, and none of them are useful except as test/demo files.

Bernhard · Post by **Bernhard** » 20 Jul 2004 10:17

thanks Patchman.

Another Idea. Is it possible to add Signals to the Stations?
Or would it be possible to add another Signal-Ground?
In big stations it is possible, that two trains use the same track.
But then they must have a signal in the middle of the platform like this
paint:

krtaylor · Post by **krtaylor** » 20 Jul 2004 13:07

No, that's been asked before, and it can't be done, except with the debugger, and that causes other problems.

Oracle · Post by **Oracle** » 15 Aug 2004 19:28

I'll dig up this topic to avoid making another one.

Two questions about coding station graphics:

Are you allowed to leave callback 14 "unanswered", i.e. not giving it a value?
Are you not allowed to make a class and not have any of the stations in it available at any one time? I wanted to have a station available from 1970-1990 and another from 1990 onwards and that didn't work: TTD hung every time I used the upper set of arrows to move into where that class would have been.

Patchman · Post by **Patchman** » 15 Aug 2004 19:55

1. If you don't give a return value, or if it's not a valid callback result (with FF in the high byte), the default tile type from the regular layout will be used.

2. That's a bug, the class should be skipped if no stations are available. I've fixed it for alpha 32.

Jezulkim · Post by **Jezulkim** » 02 Sep 2004 16:15

Sorry for digging.

This topic contains many good graphics, but is there any progress?

krtaylor · Post by **krtaylor** » 02 Sep 2004 16:18

No. And it's annoying. The problem is, there are FAR too few coders. Would you be interested in learning how to code stations? Oracle can help you.

Jezulkim · Post by **Jezulkim** » 02 Sep 2004 17:22

Maybe...

Ok I'll try. (somebody have to tell me how to code)

Eddy · Post by **Eddy** » 02 Sep 2004 17:32

I wan't to learn how to code too

and I have loads of free time plus I would really like to see a project completed

Purno · Post by **Purno** » 02 Sep 2004 17:37

Eddy wrote:I wan't to learn how to code too

If you've learned it, I will draw a Slovenian train for you, so you can code it

Born Acorn · Post by **Born Acorn** » 02 Sep 2004 17:38

aww, i liked this project.

(hopes for coders)

krtaylor · Post by **krtaylor** » 02 Sep 2004 17:46

OK, Eddy and Jezulkim. I'll try to get you started with a little preliminary explanation.

1. All new graphics for TTD have to be manually coded. Of course the graphics themselves can be drawn with any graphics program, but once you have the files with the little sprites, you have to code them in a special way to tell the game how to use them. You do this by manually writing an NFO file. Then there's a compiler that takes the NFO file and the graphic file, and compiles them into the GRF file you can actually use with the game.

2. The Patch supports GRF encoding for trains, planes, road vehicles, stations, and buildings. Bridges are being added too. It is NOT necessary to know how to code everything, to be able to code something. So for instance, you seem to be interested in coding stations; you don't have to learn how to code trains, in order to be very useful coding stations.

3. Not many people know how to code, and it isn't well documented. Oracle knows how to code both trains and stations, very well. norfolksouthern also knows how to code stations, although I don't think he is quite as familiar with all the fancy options. Patchman knows how to code everything, obviously, since he wrote the Patch, but you don't want to bother him unless nobody else can help you.

4. At the Patch website
http://www.ttdpatch.net
there is a Wiki which includes at least some information on coding graphics. I recommend you start there. You should also PM Oracle, and he will point you at useful tools and some tutorials that are being worked on.

5. It's useful to look at existing GRF files to see how they were coded. The stations in this thread were, I think, coded by ChrisCF, and if you PM him to send you the NFO files, I think he will. Hopefully he commented them so you can see how they work.

I personally cannot code, but I know who knows everything. So if you have questions, I may not be able to answer them, but I can point you in the right direction of who to ask.

Good luck, and I'll help you all I can.

Eddy · Post by **Eddy** » 02 Sep 2004 20:13

I know some basics and actions i've read wiki manual about nfo files. But I want to learn something more complicated than basic trains ( though I would really like to see a slovenian train Purno )

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