Many thanks for your reply.
What do you mean when you write “delete the asset from the file directory”? Just deleting the map with Windows File Explorer?
Because I tried that, but “Big_City_LVL.umap” is a very small file, so the overall size of the project remains the same.
The project then loaded normally.
So it seems to me that one of these two options apply:
either
- the deletion of the “Big_City_LVL.umap” file did not produce a purge of the relevant assets, which are still in the project even if they are not used; so something else would need to be done to reduce the size of the project; I tried running Tools->Validate Data but the engine crashed;
or - the big city map does not contain anything special over and above what is in the small city; it’s just a repetition of buildings, streets, etc. and deleting the map does not shrink the project.
Option 2 seems unlikely: while playing (just flying a bit around the city) I noticed skyscrapers in the big city that are not present in the small city.
BTW: if I package the game with the big city I end up with a 20Gb package.
If I package the new small city (after deleting the map), I end up with 15Gb (so something indeed has been left out).
If I package the game before deleting the map, I end up with 20Gb even if I delete the Big_City_LVL from the list of maps to include in the packaged build (via Platforms->Packaging Settings) and set Small_City_LVL as starting level for the game. It looks like the Big_City_LVL ends up being included anyway.
As you can see, I am literally just starting learning how the engine works.