question about variational action 2

hovering teacup · Post by **hovering teacup** » 28 Mar 2004 20:17

is there someone who'd kindly explain to me how to define the cargo ID with it? the place that normally defines it is in this case occupied by the '81'.

thanks in advance

Patchman · Post by **Patchman** » 28 Mar 2004 20:30

No, it's not. The 81 is where the <num-loadtypes> would be. The cargo ID is the byte before that.

hovering teacup · Post by **hovering teacup** » 28 Mar 2004 20:33

umm the Wiki omitted it...what a confusion in vain.
thanks again

Patchman · Post by **Patchman** » 28 Mar 2004 20:41

Whoops, sorry about that. I've added it now.

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 11:34

i recycle this thread for a next question.

is there any way to override wagon's graphic according to that of the engine, not to the engine's ID ? thanks

broodje · Post by **broodje** » 29 Mar 2004 12:27

how do you mean that? when you change the engine graphics by date you want to have the cariage sprites with it? If you want that you should set the same livery change date for the cariages.
But I probebly totaly missunderstand what you want. But graphics are always linked to ID's not to sprite sets.

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 12:43

i wanna introduce choice of livery for certain locomotives, using refit mechanism. for passenger locomos it's perfectly safe to have a nominal cargo capacity to activate the refitting if alternatives are limited to only two, attributed to the passenger and the mail respectively.

graphics are always linked to ID's not to sprite sets.

broodje · Post by **broodje** » 29 Mar 2004 13:22

sory I wasnt clear

, the wagon overide is linked to a certain ID, not to a sprite set id (hmm all those damn IDs

)
You can change the sprites for engines when you to refit them It should work in the same way cars can be refited (as demonstrated in the dbxlset).

is there any way to override wagon's graphic according to that of the engine, not to the engine's ID ? thanks

hmm you mean if the engine caries mail and looks diferend you want the cars behind it look the same?something like:
If engine uses spritesetID X -> cars use spritesetID A
If engine uses spritesetID Y -> cars use spritesetID B
If so I don't think thats posible. Like I said the wagonoveride is done by wagonID not by spritesetID
example

Code: Select all

23 * 7	 03 00 01 0E 00 00 00
24 * 7   03 00 81 1B 00 01 00

here you can see it, the engine is ID 0E, the pasenger car is 1B, as you can see it is directed by the wagonID.
(sory I'm having dificulties trying to tell what I want :/)

Hope you understand what I said

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 14:12

no no, that smiley wanted to say "aaah my..". your words were perfectly clear.

Patchman · Post by **Patchman** » 29 Mar 2004 14:55

You can make the wagon override be a variational action 2 that depends on the engine refit. As long as you use the same conditions for the engine and the wagon, you can change wagon graphics along with the engine.

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 17:31

oh great!! could you give me "variables for vehicles" to use in this case? Wiki is silent here.

Patchman · Post by **Patchman** » 29 Mar 2004 18:35

hovering teacup wrote:Wiki is silent here.

Now it isn't.

You'll need to use an engine-variational action 2, i.e. type 82 not 81. If your .grf runs in more than one climate you also need to make climate checks because that cargo type is climate-dependent.

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 19:06

thanks very much as always.

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 21:07

when the game trys to show a sprite defined thus, it crashes. what's wrong with this? the cargo IDs 13 and 14 works without problem.

273 * 14 02 00 17 82 b9 00 ff 01 13 00 00 00 14 00

Patchman · Post by **Patchman** » 29 Mar 2004 21:54

Hmm, that looks right... maybe a bug in the code. May I see the crashlog?

hovering teacup · Post by **hovering teacup** » 29 Mar 2004 21:58

here goes

Patchman · Post by **Patchman** » 30 Mar 2004 02:38

OK, your action 2 was right but there was a stupid bug in the patch. This works except in the purchase screen, where it crashes instead...

hovering teacup · Post by **hovering teacup** » 30 Mar 2004 13:31

alright i'll keep that part of the nfo.

hovering teacup · Post by **hovering teacup** » 31 Mar 2004 09:29

ok a third question.

I want to have an engine that gives all the livery-overridden wagons an additional weight, a different loading speed, and a visual effect (sparks), but no power. is there a simpler way than to use the callback ? and if i am obliged to use callback, how to do it for the loading speed and additional weight ? wiki's explanation is far from clear.

thanks

broodje · Post by **broodje** » 31 Mar 2004 10:12

hmm yes okey, I'm answering from a place where I can't answer you (I should post this, but I have to entertain myself for 15 more minutes

).
I Think you do have to use calbacks for that, at least for the loadingspeed, and especialy for the sparks. Maybe you can set poperty (and now I'm going wrong on the property numbers I cant acces the wiki, nor the newgrf.txt here) 1b and set 00 there (thus powered wagons, but the zero power) and then ad the weight in property 26. Both options should be set in the action 00 for the engine.
the calbacks are a bit more dificult, I can't tell you now, becouse I want acces to my own nfo files for that. So I might (if I got time ) answer it when I get home.

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