Transport Tycoon Forums

Posted: **10 Feb 2007 15:48**

I'm experimenting with getting tramroads (like they are in ttdpatch) into ottd (I'm able to build tramroads already). But how do I add 112 sprites without overwriting existing ones?

Just now I'm doing it like this:

In sprites.h:

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	SPR_TRAMROAD_BASE = SPR_ROADSTOP_BASE + 8, // The sprites used for drive-through road stops
	SPR_TRAMROAD_ROAD = SPR_TRAMROAD_BASE + 4,
	SPR_TRAMROAD_TRAM = SPR_TRAMROAD_BASE + 27,

In gfxinit.cpp:

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	assert(load_index == SPR_ROADSTOP_BASE);
	load_index += LoadGrfFile("roadstops.grf", load_index, i++);

	assert(load_index == SPR_TRAMROAD_BASE);
	load_index += LoadGrfFile("tramroads.grf", load_index, i++);

I thought doing it like the sprites for drive-through-roadstops were added should work, but now it seems, I've overwritten some gui sprites

Would be even better, if someone could also tell me, how to add them to the same spriteid like in ttdpatch (to be compatible to grf's changing them).

P.S.: If I'm able to get the whole tram stuff working, are I allowed to use the sprites from ttdpatch and release them as a grf for ottd (I don't want to add all the sprites from ttdpbase, just the ones for tramroads)?

Posted: **10 Feb 2007 18:28**

So you're the secret ninja doing the trams in OTTD stuff? (this is a very old/obscure joke)
Good luck!

Posted: **10 Feb 2007 19:01**

such a good news !...
I whish you good luck,
some of us are waiting for people like you for years

now, lets hope you will get help from devs or else...

Posted: **10 Feb 2007 19:09**

Valance wrote:I'm experimenting with getting tramroads (like they are in ttdpatch) into ottd (I'm able to build tramroads already). But how do I add 112 sprites without overwriting existing ones?

I’ve no idea why you're having this problem, your code looks ok.

Valance wrote:( Would be even better, if someone could also tell me, how to add them to the same spriteid like in ttdpatch (to be compatible to grf's changing them).

TTDPatch tram track graphics are changed using Action 5 feature type B. This is not currently implemented in OpenTTD so you would need to add it. Look at how Action 5 is implemented for other features (like signals or elrails) (newgrf.cpp - line 2160) You will see that OpenTTD‘s sprite ids don‘t need to match those of TTDPatch, the action 5 code does the right thing.

Valance wrote:P.S.: If I'm able to get the whole tram stuff working, are I allowed to use the sprites from ttdpatch and release them as a grf for ottd (I don't want to add all the sprites from ttdpbase, just the ones for tramroads)?

You will need to find out who the author is and ask their permission.

Anyway good luck with this and if you want to understand gamezguy’s joke look here.

Posted: **10 Feb 2007 22:13**

It's not the first time I had problems with missing sprites. Some days ago I tried to user your drive through roadstops patch with roadmarkers patch, the same problem (ottd crashed and told me it's missing sprite #5981).

Today (after source update from svn) it didn't crash anymore, just showing gfx glitches. I enabled debug messages and got this:

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dbg: [sprite] Tried to load non-existing sprite #5981. Probable cause: Wrong/missing NewGRFs
dbg: [sprite] Tried to load non-existing sprite #5981. Probable cause: Wrong/missing NewGRFs
dbg: [sprite] Tried to load non-existing sprite #5981. Probable cause: Wrong/missing NewGRFs
dbg: [sprite] Tried to load non-existing sprite #5981. Probable cause: Wrong/missing NewGRFs
dbg: [sprite] Tried to load non-existing sprite #5981. Probable cause: Wrong/missing NewGRFs

Some lines earlier ottd told me:

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dbg: [sprite] Loading sprite set 0
dbg: [sprite] Reading indexed grf-file 'TRG1R.GRF'
dbg: [sprite] Reading grf-file 'TRGIR.GRF'
dbg: [sprite] Currently 4896 sprites are loaded
dbg: [sprite] Reading grf-file 'nsignalsw.grf'
dbg: [sprite] Currently 5382 sprites are loaded
dbg: [sprite] Reading grf-file 'canalsw.grf'
dbg: [sprite] Currently 5452 sprites are loaded
dbg: [sprite] Reading indexed grf-file 'trkfoundw.grf'
dbg: [sprite] Reading grf-file 'autorail.grf'
dbg: [sprite] Currently 5585 sprites are loaded
dbg: [sprite] Reading grf-file 'elrailsw.grf'
dbg: [sprite] Currently 5638 sprites are loaded
dbg: [sprite] Reading grf-file '2ccmap.grf'
dbg: [sprite] Currently 5894 sprites are loaded
dbg: [sprite] Reading indexed grf-file 'openttd.grf'
dbg: [sprite] Reading grf-file 'airports.grf'
dbg: [sprite] Currently 6025 sprites are loaded
dbg: [sprite] Reading grf-file 'roadstops.grf'
dbg: [sprite] Currently 6033 sprites are loaded
dbg: [sprite] Reading grf-file 'tramroads.grf'
dbg: [sprite] Currently 6146 sprites are loaded

loading sprites was successful. How can loading more sprites beginning at index 6033 make the ones at 5981 - 5983 disappear?

Thanks, the info about action 5 feat. B helped a lot

Shouldn't that complicated to code it.

Hehe, I see, much to do for me

Posted: **10 Feb 2007 22:24**

Do you care to show a diff, as I can start guessing what might be wrong, but it's probably easier to fix when someone with some knowledge about the SpriteIDs takes a look at it.

Posted: **10 Feb 2007 22:45**

No problem

But be careful, there is a lot of trashcode in^^

Posted: **10 Feb 2007 23:15**

Compare lines 167-171 with 194-195 in your diff (there might be more instances of this, haven't looked in depth at it). Your editor did probably not understand that the file was UTF-8 encoded and destroyed all Unicode characters in it, making a big mess of the whole file.

Posted: **10 Feb 2007 23:33**

Hm

I really begin to hate kwrite... First german umlauts, and now this.

Thanks for finding it

Should switch to vim as editor^^

Edit: Got the trams to drive on their shiny new tramroads

Posted: **11 Feb 2007 00:16**

Kwrite can be changed to edit your file in utf8, you know. GOi to settings -> configure editor, and then in load/save switch the format to whatever you want. Easy as pie.

Anyway, for programming you should probably be using Kate at the very least, and you might want to consider getting a decent IDE. The two I use are Kdevelop and Eclipse.

Posted: **11 Feb 2007 00:30**

Hehe, it's already configured for loading/saving with utf8, but as we've seen, it didn't help

Could be another wrong configuration by me, but I haven't found the wrong setting some month ago, and I think, I won't go searching again now.

The same problem will occur in Kate and KDevelop (tried it already some month ago). But perhaps, I'll give Eclipse a try, but for now, vim / gvim seems to work fine

Posted: **11 Feb 2007 01:32**

Ooh, good work, I've been awaiting these in OpenTTD for quite a whiles.

I've never heard the term "tramroad" used before. It sounds rather strange, seeing as they are basically rail tracks and not roads.

Posted: **11 Feb 2007 02:51**

Valance,

You can get a grf with only (standard gauge) tram tracks in it here.

I don't have an up-to-date standalone grf of the original tramtracks in ttdpbase.grf, but there's no reason why I couldn't make one.

Posted: **11 Feb 2007 13:15**

Nice work Valance..

I wanted to try this in openttd for a long time

Posted: **11 Feb 2007 18:11**

It seems I stand corrected! (although it isn't 1897 anymore)

Posted: **11 Feb 2007 23:35**

I've never heard the term "tramroad" used before. It sounds rather strange, seeing as they are basically rail tracks and not roads.

Oh, I thought I invented this word

No, it happend while coding ... I began to use "tramroad" as "road for trams" (as I handle them like roads). I will change it later.

You can get a grf with only (standard gauge) tram tracks in it here.

I don't have an up-to-date standalone grf of the original tramtracks in ttdpbase.grf, but there's no reason why I couldn't make one.

I've created already a standalone grf from the ttdpbase ones to work with. (I'm no artist^^) But I like your standard gauge ones more, especially the (lightweight, I attached a screenshot to see what I mean) wires.

Today I added tram depots (aren't working yet), had some nice fights against a lot of funny bugs I coded *lol* and got drawing of wires and poles halfway-working (wasn't able yet to find a way to draw the ones for slopes, as I haven't found out how their sprites are arranged)

Posted: **12 Feb 2007 09:50**

Do we have some diff for this?

Celestar

Posted: **12 Feb 2007 11:12**

Standard gauge look snice. Now, if we could just get mainline trains running on them...

Posted: **12 Feb 2007 13:20**

Hello Valance!

Its nice work you did for the implementation of tramroads in OTTD and I like it very much. Also I think it was "höchste Eisenbahn" to enclude this stuff.
Now to the wires and poles on your to pics:
1. Picture the wires looking good, I would prefere them.
2. Picture the poles appear very often and look very shiny, so thats looks ugly IMO.
As in cities with tramroads all catanery is fixed on the buildings walls they passes, there are only a few poles when there is needet. So I think it would be better the poles would disappear when buildings are near the tramroad.

N8king

Posted: **12 Feb 2007 13:25**

Wow, that's great! (Wirklich gute Arbeit, Valance!)
I'm looking forward to that feature!

How will you prevent crashes between trams and buses? Having signals all over the track will look bad and be quite annoying... Is it possible to let busses and trams just take care on each other, like it is in reallife when busses and trams are on the same track?

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