[1.18.2] How to read a structure .nbt file directly into a CompoundTag?

I'm trying to read some .nbt files that I've generated in-game (and moved to my mod's resources directory) with this code:

ResourceLocation fullRl = new ResourceLocation("reignofnether", "structures/" + structureName + ".nbt");
Resource rs = manager.resourceManager.getResource(fullRl);
CompoundTag nbt = NbtIo.readCompressed(rs.getInputStream());
System.out.println(nbt);

I keep getting this error:

java.io.FileNotFoundException: reignofnether:structures/villager_house.nbt

Even though I've made ResourceLocations to all of those other resources just fine in the same way, eg:

private static final ResourceLocation TEXTURE_CURSOR = new ResourceLocation("reignofnether", "textures/cursors/customcursor.png");

EDIT: ok so I realised I was running the above code serverside because I needed access to ServerLevel.getStructureManager(), and I guess maybe resources aren't available serverside?

How can I access the .nbt files inside the world save folder instead serverside?

Edited July 8, 20223 yr by SoLegendary