"Glasshouse" station as new station conversion

[krtaylor]

It doesn't matter, a workable solution has been found.

[Oracle]

Josef, I've just got around to attempting this and I am getting nowhere at all. I just have no idea what to put for the sprite layout. I understand the documentation to mean "put 00 00 00 00 to use TTD's layout" but it's really unclear and it doesn't work as I expect (so my interpretation is therefore wrong).
I also don't understand how the glass works, although I expect it needs to be drawn in "transparent mode".
Could you give me some pointers on how I can simply say "use TTD's layout and sprite except..."?

[Patchman]

OK, to use TTD's layout, you use 00 00 00 00 for the ground sprite number and leave off everything else.

So instead of

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F4 03 00 00
      00 00 00  10 05 02  2E 84 00 00
      00 0B 00  10 05 02  30 84 00 00
      80

you just put

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00 00 00 00

For transparent sprites, have a look at newstat.pre in newstat.zip on the source code site. Basically, the roof of TTD's stations is made like this:

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00 00 10  10 10 0A  37 84 00 00
00 00 80  00 00 00  3B 44 22 03

The first sprite here is the non-transparent frame of the roof. The second part is a special "linked" sprite without its own bounding box, it shares that of the previous sprite. That's done by setting the z offset to 80.

To make that second sprite transparent, you set bit 14 in the sprite number, and set the upper word to 322, so 0322443B means take sprite 43B and draw it in transparent mode. The colours of that sprite are ignored entirely, every pixel in colour 0 is fully transparent, and all other pixels are semi-transparent (essentially just causing what they are drawn over to become darker).

Hope that helps

[Korenn]

can you put that as an example in the wiki?

even I understand it now

[Patchman]

Never!

...

Oh alright I'll do it.