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station ground tiles and rail type sets

Posted: 12 Oct 2012 11:33
by michael blunck
I have a weird problem with defining station/WP ground tiles for different climates and rail type sets.

E.g. in arctic/alpine:

- When using 1012/1011 as a ground tile the arctic track ground tile is displayed in arctic plus it´s overlayed by the custom track sprite supplied by a rail type set. Problem is that there´s no snowy ground in arctic/alpine above snow line. Therefore, a second layout is needed:

- When using 1038/1037 as a ground tile, the arctic snowy ground tile is displayed in arctic above snowline, but it´s not overlayed by the custom track sprite supplied by a rail type set. Problem is that the custom rail type track sprites are missing (custom rail sprites outside stations are OK).

I.e.:

Code: Select all

f4 03 00 00 // track (gets replaced by rail type set track sprite)
00 00 80 00 00 00 2d 04 00 00 // overlay 
80

...

0e 04 00 00 // track (does not get replaced by rail type set track sprite)
00 00 80 00 00 00 2d 04 00 00 // overlay 
80
WP_arctic bug.png
WP_arctic bug.png (24.58 KiB) Viewed 1482 times
Building sprites are no problem, because they´re from a custom sprite block and used according to the terrain type. It´s only the TTD ground tiles which I can´t get to work together with rail type sprites.

Question: How are rail type overlay sprites acting with different climate track ground tiles? It seems they´re only used together with 1012/1011? I.e., no snow or desert?

regards
Michael