Sprite limitations

dizcon · Post by **dizcon** » 14 Feb 2004 14:38

How large can an engine sprite be?

I'm trying to create an EMU here, so I also want to know how the DB set changes the carriages after what engine it is connected to..

SHADOW-XIII · Post by **SHADOW-XIII** » 14 Feb 2004 16:37

therre is whole tutorial how to creat GRF files:
http://wiki.ttdpatch.net/tiki-index.php ... RFTutorial

dizcon · Post by **dizcon** » 14 Feb 2004 16:42

It's kinda... not written

krtaylor · Post by **krtaylor** » 14 Feb 2004 17:29

You'd want an EMU to be the normal size, because you would expect to have more than one of them in a train. You can use long engines if you only have one of them, at the head of the train, but you can't multihead them.

dizcon · Post by **dizcon** » 14 Feb 2004 17:32

The EMU has four quite long units. Exactly how long can they be in TTD?

krtaylor · Post by **krtaylor** » 14 Feb 2004 18:02

If you look at almost all the traincars in TTD, you'll see that they are unnaturally short. The only thing that comes even close to proper length are some of the locomotives, because they've been made longer or improperly hinged in the middle so as to take up two spaces.

Which EMU are you wanting to do?

dizcon · Post by **dizcon** » 14 Feb 2004 18:13

it will probably never fit:

Killer 11 · Post by **Killer 11** » 14 Feb 2004 18:15

Holy mother of god that's a most beutiful train i ever seen

Split each unit in two sprites and it will fit

The bigboy is splited in three sprites and it looks good

krtaylor · Post by **krtaylor** » 14 Feb 2004 18:17

Umm. You're right, it will never fit, but you may be able to do a kludge that will work by slicing it into properly-short segments, with a slanted loco at each end. What is this train anyway?

dizcon · Post by **dizcon** » 14 Feb 2004 18:37

I thought about splitting it up, but then I figured the units would also be splitted when turning. Unless there is a way to prevent that?

The train set is called BM73 ("Signatur") and is used for intercity/region routes in Norway.

Killer: danke

krtaylor · Post by **krtaylor** » 14 Feb 2004 18:43

Yes, the units will be split when turning. It has to be that way, otherwise they stick way out over the edge of the corner and it looks even worse.

I think the best comparison is to look at what the ICE looks like in MB's DBset. It looks like a proper ICE, except that each of the cars is about half the length it really should be. This sort of shortening is conventional in games of this type, and unavoidable if you are going to have right-angle corners the way TTD does. It's simply impossible to have realistically long traincars because the corners are unrealistically sharp.

Killer 11 · Post by **Killer 11** » 14 Feb 2004 18:44

can you post a foto of a real thing

dizcon · Post by **dizcon** » 14 Feb 2004 20:55

OK.. Then, to my other question: Can anyone give me a hint on how the cars are converted to ICE cars when placed together with an ICE loco?

Oracle · Post by **Oracle** » 14 Feb 2004 21:13

It's called 'livery override' or 'wagon override' and is rather complicated. I've just taught myself how to do it today, actually.
To simplify it slightly, do it something like this:
Action 0 sets sprite number for engine and wagons to FD (new graphics)
Action 1 defines engine sprite block(s)
<insert actual sprites here>
Action 2 defines cargo ID for that engine
Action 1 defines wagon override sprite blocks (e.g. one each for passengers and mail)
<insert actual sprites here>
Action 2 defines cargo ID for the passenger wagon
Action 2 defines cargo ID for the mail wagon
Action 3 associates engine with engine ID
Action 3 overrides passenger wagon livery (bit 7 of n-vid set)
Action 3 overrides mail wagon livery (bit 7 of n-vid set)

Have a look at newgrf.txt or the Wiki for more information.

dizcon · Post by **dizcon** » 14 Feb 2004 22:09

Thanks. I have a new question: How does TTD line up the train sprites? Does it add space between the carriages, or do we do that ourselves?

Perhaps it's set in the NFO? I think I saw some special cars that had no space on one side, this is what I want at some point..

krtaylor · Post by **krtaylor** » 15 Feb 2004 03:07

TTD does not set the space between the sprites. You can get rid of the space by telling it that your sprite is bigger than the default 28, which will allow it to put a longer sprite in the same space, thus covering over the unduly large gaps in between. We are discussing just this issue in the thread for the US set, because I don't want those big gaps between the passenger cars. It is known to be possible, because the ICE works that way.

dizcon · Post by **dizcon** » 15 Feb 2004 19:16

Killer 11 wrote:can you post a foto of a real thing

http://mercurio.iet.unipi.it/pix/no/ele ... 73_rr1.jpg
And you probably won't see a TTD-version (at least not for a while) as I'm not skilled enough to draw all the angles.

GoneWacko · Post by **GoneWacko** » 15 Feb 2004 19:26

wow I love the Norwegian landscape!

Killer 11 · Post by **Killer 11** » 16 Feb 2004 10:37

I'm creating CD "TTD MEGAPACK"(for personal use ofcourse)
and i think it's worth to be in that cd.

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Sprite limitations

Sprite limitations

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