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- Wahazar
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train is lost - bug?
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Postby Wahazar »
Is it known bug/feature?
I got "train is lost" message when train (diesel) is going from non-electrified to electrified part of the network.
Train itself move without problems.
Attached save can reproduce it (for example train 39).
- Attachments
- qamil Transport, 9th Nov 2018.sav
- (2.01 MiB) Downloaded 46 times
Formerly known as: McZapkie
Projects: Reproducible Map Generation patch, NewGRFs: Manpower industries, PolTrams, Polroad, 600mm narrow gauge, wired, ECS industry extension, V4 CEE train set, HotHut.
Another favorite games: freeciv longturn, OHOL/2HOL.
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- Transportman
- Tycoon
- Posts: 2791
- Joined: 22 Feb 2011 18:34
Re: train is lost - bug?
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Postby Transportman »
Are you sure you attached the correct save?
Just something that pops to my mind, can it be that the train needs maintenance at a depot, but that it just cleared the crossing/cannot reach that depot?
Coder of the Dutch Trackset | Development support for the Dutch Trainset | Coder of the 2cc TrainsInNML
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- Wahazar
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- Joined: 18 Jan 2014 18:10
Re: train is lost - bug?
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Postby Wahazar »
Transportman wrote:Are you sure you attached the correct save?
Strange, there was many messages on server, but after save, I can reproduce only one example, with train 39.
Probably it is related with depot - there is 'service' order, but train have high reliability and order is skipped - in this moment message appears.
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- Alberth
- OpenTTD Developer
- Posts: 4763
- Joined: 09 Sep 2007 05:03
- Location: home
Re: train is lost - bug?
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Postby Alberth »
The first company also has lost trains, and eventually runs into a deadlock
At the left, a full train is waiting for a platform
- waiting_for_space.png (193.6 KiB) Viewed 1667 times
At the right the middle train is waiting for a free path
- waiting_for_input.png (101.17 KiB) Viewed 1667 times
This is however in a different company than train 39. Is there a difference in performance running on different tracks? I extended the catenary until the station, and didn't get the message any more. It's quite weird.
Being a retired OpenTTD developer does not mean I know what I am doing.
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- Transportman
- Tycoon
- Posts: 2791
- Joined: 22 Feb 2011 18:34
Re: train is lost - bug?
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Postby Transportman »
McZapkie wrote:
Transportman wrote:Are you sure you attached the correct save?
Strange, there was many messages on server, but after save, I can reproduce only one example, with train 39.
Probably it is related with depot - there is 'service' order, but train have high reliability and order is skipped - in this moment message appears.
Oops, train 39 is in the other company, my bad.
Coder of the Dutch Trackset | Development support for the Dutch Trainset | Coder of the 2cc TrainsInNML
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- frosch
- OpenTTD Developer
- Posts: 988
- Joined: 20 Dec 2006 13:31
- Location: Aschaffenburg
Re: train is lost - bug?
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Postby frosch »
This is FS#6329.
@McZapkie: In particular this also causes your desyncs. The train is lost on the server, while it is not on newly joining clients (or when loading a savegame), so the train takes different routes on server and client.
⢇⡸⢸⠢⡇⡇⢎⡁⢎⡱⢸⡱⢸⣭⠀⢸⢜⢸⢸⣀⢸⣀⢸⣭⢸⡱⠀⢰⠭⡆⣫⠰⣉⢸⢸⠀⢰⠭⡆⡯⡆⢹⠁⠀⢐⠰⡁
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- Eddi
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- Joined: 17 Jan 2007 00:14
Re: train is lost - bug?
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Postby Eddi »
in the really early days of YAPF i had a similar problem, where the cache got filled with different value depending on whether an electric or non-electric engine entered a mixed junction
Edit: dug out the bug report: https://bugs.openttd.org/task/988
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- Wahazar
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- Posts: 1452
- Joined: 18 Jan 2014 18:10
Re: train is lost - bug?
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Postby Wahazar »
I'm glad that desync source was clarified, I was worrying that some of my newgrfs are faulty.
Hope that is is feasible to localise and correct this bug, because partially electrified networks are part of the game both from economic point of view
(less maintenance costs of non-electrified tracks in contrary to cheaper running costs of electric locomotives) and from pathfinding purposes
(opportunity to force certain trains to certain platforms without using waypoints, which always occupy some precious tiles).
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