[kovarex] [0.17.52] Train path issue when deactivating stations (erronous "can't reach")

[MrBuisson]

Hi,
one of the last update seems to have changed to way station works, especially when deactivating them.
I have trains that refills outpost based on the need of each of them - and the outpost deactivate its train station when nothing is needed.
Worked quite well for some time, until I started getting heavy train jams. It came out (hope I'm not wrong) that the train goes in "station unreachable" if a station deactivate - but not always. Exact condition is not known I'm afraid ...
I have below few screenshots that explain well the issue : 3 trains trying to go to the same station, each in a different state :

map view

no access.PNG (3.56 MiB) Viewed 1223 times

Train 1 : (wall bang unreachable)

train 1.png (6.84 MiB) Viewed 1223 times

Train 2 : (Wall repair unreachable)

train 2.png (6.16 MiB) Viewed 1223 times

Train 3 : (the only one doing the rigth thing)

train 3.png (6.08 MiB) Viewed 1223 times

Needless to say, but all station on attached save are reachable.

The trains are all on the same (unchanged) path that connect further on the main bus. Issue occurs without having to remove any station, just wait long (enough). Usually one of those 3 trains get stuck after about 1 hour.

mods :

mods.PNG (123.55 KiB) Viewed 1223 times

BR,
Mr Buisson


PS : please pardon my poor naming sence.

[mmmPI]

Hi,

I was not able to see them "get stuck" but I couldn't wait 1 hour either.

The initial state of the save is suprising, trains saying "no path", while all the station having the name are disabled, they are not "unreachable" just desactivated. I don't know how this can happen. I am curious now.

Though when you open one station ( wallbang or wallrefill ) , train 1 and 2 do behave properly and go to the station, then come back, and wait in the normal state, just like train 3.

Needless to say, but all station on attached save are reachable.

That's what I ended up questionning, maybe if you wait 1 hour acid will land on the rails that are already damaged here when a train passes at the same time of an attack.

ennemy.png (1.46 MiB) Viewed 1187 times

Given the path trains uses ( complicated junction to prevent crossing and only merge from the side?) It could block even the train coming back from the northen horizontal wall.

It doesn't explain the initial state, but that makes me think about a rail path that would be removed and repaired by bots. I find it interresting and will investigate.

Sorry for poor help, but 1 hour is very long !

[kovarex]

I tried to deactivate a station that the train is headed for, and it works fine. The problem in your save seems to be, that some are disable, but some are enabled but unreachable. Make all the stations reachable and it should work fine.

Or create a small reproducible example of what exactly is wrong please.