[GS] PlayEuropeAgain, invisible rivers, possible root cause and fix

[Sigurdsson]

Taken from this post, there are invisible rivers on the PlayEuropeAgain map - this is a known issue in Civ itself, but the root cause seems to be related to river flow direction, i.e. the last tile of the river is flowing against the direction of the other river tiles, Civ doesn't know which flow animation to play, and so doesn't render the river. If that flow is fixed via something like the Cheat Map Editor, the river becomes visible again, once reloaded.

Is this something that could be fixed at the map layer for PlayEuropeAgain?

 

[Gedemon]

I've noted to check that. I'm unsure if the bad flow direction is defined at the origin (ie in my map script, in that case, yes it's easy to fix, but tedious to detect, in the past I found it simpler to redraw the whole disappearing rivers) or a bad decision of the gamecore engine when civ6 is applying GS new option like ("floodable floodplains") as reported here:
https://forums.civfanatics.com/thre...aps-after-calling-generatefloodplains.650202/

thanks for the report, as I have a precise plot to analyse now.

 

[Gedemon]

good news: easy to manually fix, it's on the mod side, at least for that example.
bad news : may takes time to fix.