Polish PKP Set 2.0 - development thread

[kamnet]

I'm now trying out the Polish Set! It looks very well done, and I'm learning about Train Brakes too!

Just a note for other users. The Polish PKP Set stopped development several years ago. The project was forked and continues development as the Polish Train Set. It has it's own development forum at https://openttd-polska.pl/Thread-Kolej-Polish-Train-Set. You may want to report any issues there. As it is a Polish language forum, please be mindful and translate your posts into Polish using an online translator. Thanks!

[qamil]

Hi,
I'm replying in this old topic, because Mewa/Mevva who forked Polish Train Set and released version 3.0.2 is inactive since some time, I don't know NML, so I have to ask here for help

OpenTTD 13.0 has broken compatibility with Polish Train Set 3.0.2. Since version openttd-20230106-master-g29af0f8c7b, no matter what you set in "Disable electric rails" setting, all vehicles can run on non-electrified rails. Previous version (openttd-20230105-master-g58068883f8) was still correct. Looking into changelog (https://cdn.openttd.org/openttd-nightli ... ngelog.txt) I'm assuming, that it is probably connected with fix https://github.com/OpenTTD/OpenTTD/pull/10315 - Don't assume engclass 2 should be elrail.

On the other hand, older version of Polish Train Set still works correctly in OTTD 13.0. Looking on the changelog of Polish Train Set, there is one train that is coded differently than in PKP Set 2.0 - ET26 Dragon 2 (polish train set\src\engines\et26.pnml). Since Polish Train Set 3.0.0 it has "disel mode" - as multi track loco, it can run on electrified and not electrified track, and have different parameters. I have copied et26.pnml from PKP Set 1.2.2 (in this version it was only available in electrified rails, without diesel mode) and voila, it works correctly. So the reason of problems is in et26.pnml file, which have some additional switches like switch(FEAT_TRAINS, SELF, switch_et26_graphics_diesel, current_railtype) - but why this is affecting whole NewGRF, and making problems with all other trains too?

To sum up, combination of these two changes (one in OTTD and one in PKP Set) is causing all trains from set running on non-electric track. Could you help me with finding the reason of this, and potentially fixing? Source code of these versions of Polish Train Set are available in https://openttd-polska.pl/showthread.ph ... 7#pid25947 (no account needed for downloading).

Regards,
qamil

[Brickblock1]

Hi,
I'm replying in this old topic, because Mewa/Mevva who forked Polish Train Set and released version 3.0.2 is inactive since some time, I don't know NML, so I have to ask here for help

OpenTTD 13.0 has broken compatibility with Polish Train Set 3.0.2. Since version openttd-20230106-master-g29af0f8c7b, no matter what you set in "Disable electric rails" setting, all vehicles can run on non-electrified rails. Previous version (openttd-20230105-master-g58068883f8) was still correct. Looking into changelog (https://cdn.openttd.org/openttd-nightli ... ngelog.txt) I'm assuming, that it is probably connected with fix https://github.com/OpenTTD/OpenTTD/pull/10315 - Don't assume engclass 2 should be elrail.

You are probably correct this would be because the track_type property is set to rail and not elrl which is wrong but worked before the change in openttd.

On the other hand, older version of Polish Train Set still works correctly in OTTD 13.0. Looking on the changelog of Polish Train Set, there is one train that is coded differently than in PKP Set 2.0 - ET26 Dragon 2 (polish train set\src\engines\et26.pnml). Since Polish Train Set 3.0.0 it has "disel mode" - as multi track loco, it can run on electrified and not electrified track, and have different parameters. I have copied et26.pnml from PKP Set 1.2.2 (in this version it was only available in electrified rails, without diesel mode) and voila, it works correctly. So the reason of problems is in et26.pnml file, which have some additional switches like switch(FEAT_TRAINS, SELF, switch_et26_graphics_diesel, current_railtype) - but why this is affecting whole NewGRF, and making problems with all other trains too?

I believe it affects the entire grf becaouse the railtype table is defined there and removing it by replacing that file removes it and therefore it doesn't use the new fix in openttd. This is however just a theory and I would need to test it which I do not have time for now.

To sum up, combination of these two changes (one in OTTD and one in PKP Set) is causing all trains from set running on non-electric track. Could you help me with finding the reason of this, and potentially fixing? Source code of these versions of Polish Train Set are available in https://openttd-polska.pl/showthread.ph ... 7#pid25947 (no account needed for downloading).

Fixing this should be as easy as changing every mention of RAIL in the properties of the electric trains to ELRL, but it might be a good idea to change the code to use the standardised railtype scheme and redo the et26 to work with any trackset. I would be able to make a separate grf to fix it but redoing the et26 won't be possible that route.

Regards,
qamil

[Brickblock1]

I have managed to get it to compile now but I wouldn't be able to upload it to bananas.

[kamnet]

I have managed to get it to compile now but I wouldn't be able to upload it to bananas.

It would be best to post it to the development thread on OpenTTD Polska.

[Brickblock1]

It would be best to post it to the development thread on OpenTTD Polska.

For some reason it doesn't seam to work for me

[qamil]

Hi,

Brickblock1 helped a lot with fixing this, so today I'm releasing updated version of Polish Train Set 3.
https://github.com/qamil95/Polish-Train ... tag/v3.0.3
Changelog is not long:

Code: Select all

Fixed handling of electrified rail in OpenTTD 13 (Thanks for Brickblock1!)
Fixed EN63A (Impuls) graphics alignment
Added bulk cargo colours: ferrochrome (FIRS4), recyclables (XIS), biomass (XIS)
Fixed sources not compiling under latest NML

I hope that I would succesfully contact Mewa, or find another way to publish it as update on Bananas.

Best regards,
qamil

[koalorka]

This is a wonderful set, and I hope a solution is found for the newer versions.

[Guy from Wildesford]

A pity that the Polish Train Set seems to be dead. It's one of the most advanced vehicle sets out there.

But it doesn't play along well with FRAX, for example, with FIRS5. In the Steeltown economy, the capacity of all flat or stake cars is half of what it should be. In the other economies, the capacity of all box cars is twice as high as it should be (figures are always what they should be for goods), and only flat/stake cars can transport goods, box cars can't.

Maybe qamil can upgrade it to FRAX. It doesn't really help that OpenTTD Polska has been shut down, and the domain has been scooped up by some domain grabber.

[AkagiWhiteComet]

A pity that the Polish Train Set seems to be dead. It's one of the most advanced vehicle sets out there.

But it doesn't play along well with FRAX, for example, with FIRS5. In the Steeltown economy, the capacity of all flat or stake cars is half of what it should be. In the other economies, the capacity of all box cars is twice as high as it should be (figures are always what they should be for goods), and only flat/stake cars can transport goods, box cars can't.

Maybe qamil can upgrade it to FRAX. It doesn't really help that OpenTTD Polska has been shut down, and the domain has been scooped up by some domain grabber.

currently work on the new version is being carried out on this discord server https://discord.gg/x3mjW4rT9G

[Warhapper]

I'm working at those two at this moment:
locomotive pm 36 Export

obraz_2025-04-01_201057378.png (4.34 KiB) Viewed 4254 times

Luxtorpeda

obraz_2025-04-01_201109626.png (4.6 KiB) Viewed 4254 times

[Sekrus]

Speaking of Polish Train Set. We're currently making a fork to it that actually adds lots of new liveries, locomotives, carriages 'n stuff. I aint the main developer in there so I prolly shouldn't be the one saying it, but it is what it is.
It will be called "Polish Rolling Stock Pack" by now.