[Lou]Ghost entities cannot be placed directly on Aquilo tiles which require two layers of tiles to be constructed

[hopefuldecay]

Building ghosts cannot be placed on Aquilo on top of Ammoniacal ocean tiles, Brash ice, or Smooth Ice using force-build (shift) or super-force-build(ctrl+shift). (The tiles that require ice+concrete for buildings.)

This is extra annoying since two types of tiles are required on this planet, so it would be one of the obvious use cases for the ghost-on-water functionality.


Expectation:
Ice, concrete and the building should be placed as ghosts.

Result:
No ice, concrete or building ghosts are placed, only chest ghosts (entities which don't require both concrete and ice?)
If the ice and concrete ghosts are placed manually, then the building ghost can be placed as normal.
Even if unlocked, foundation tile ghosts are also not placed.

465465654.png (162.73 KiB) Viewed 464 times

If ghost ice tiles are placed, then concrete and the building are added as expected.


How to reproduce:
Try to place any building ghost on any of the tiles mentioned without first manually placing ice platform.

[hopefuldecay]

Further information, while messing around with other things in the editor, I realized that this issue seems savefile dependant! Attached are two saves, in one of them it works as expected, but it's broken in the other. The savefiles both have the same technologies researched (from the editor)
There are other unrelated entities in the nauvis surface as I was testing other things, please ignore.

ShareX_STjRqMJZrd.png (28.96 KiB) Viewed 426 times

ShareX_UDhoscgy4P.png (90.79 KiB) Viewed 426 times

[Lou]

Thank you for the report. The behavior you observed is not a bug. Since there is multiple options of covers for ice platform (concrete, refined concrete, hazzard concrete, ...) the system cannot deduce by default which tile to autofill by default (this explaines your first observed behavior).

To mitigate this issue, the game substitutes the last used cover tile as a proxy for default tile cover for the covered tile (per surface per force). EG after you use concrete as a cover for ice platform, concrete will be treated as a default cover for ice platform (until you use different cover). This information is saved, which explains your second observation.

example video (as shown, ghosts counts as a cover)

factorio-run_rIONF8T2G3.mp4

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[Xellnix]

this cant be "not a bug" this is highly annoying for blueprints:
thats the issue:

ice natural.PNG (1.21 MiB) Viewed 194 times

blueprint.PNG (513.62 KiB) Viewed 194 times

thats my bp to build, both ice and concrete is listed

building.PNG (1.13 MiB) Viewed 194 times

but it gets stuck

ground.PNG (702.5 KiB) Viewed 194 times

this is the ground after placing down the blueprint

failed.PNG (364.55 KiB) Viewed 194 times

these tiles arnt done right

icep.PNG (395.81 KiB) Viewed 194 times

i cant place down ice platforms, so these tiles ARE ice platforms but even if i place down the bp again, the concrete isnt added

concrete.PNG (361.12 KiB) Viewed 194 times

that is the view if i wanted to place down concrete, if i do, the tiles get filled and i can build

if i try the same with a "double layered" platform+concrete blueprint it doesnt

if i remove the ice platform and concrete from the main blueprint and just force down the entitys it works like a charm

so why does the system decide which ground to put down if i just force a building down, but cant do it if i force down a building + ground tiles?