FOSS gamedev and creative worlds

I am making a subgame based of the Legend of Zelda series. I'm modifying Minetest Next, and I'd really appreciate it if I could get some help with a few things. So firstly, I don't know whether it's ok to modify another subgame, I assume that it is ok since the liscence is GNU general public license v3.
Here is my big list of questions:
1. I am using the pmobs mod with the game, but for some reason throwing snow does not work, does anyone know if I can fix this? The snow is removed from my inventory, but nothing else happens.
2. I want to make a worldedit schematic appear randomly on a new world, is it possible?, and also will it work for large structures?(such as a castle).
Like I said, I'd really appreciate any help I can get.

the "biomes:biome" for the decoration registration must have the exact biome name(s) to work.
so if your biome is named "grasslands" you have to set "biomes: grasslands".

if you have just one typo in there, the engine will not place decorations because it can't find the registered biomes.
(that's what happened to me when i tried to add my first decoration)

ah ok, thanks!
I had tried using biome names from the mapgen file in the default mod, but the biome names didn't work.
Is the colon required instead of "="?

erm... no. don't change the signs.
i just didn't check how it was written.
you can use the mapgen code from default, but you must change all nametags to fit the names of your mods.

ok thanks

I like the idea and the style you currently adopted for the textures :)

thankyou, I'm considering making new textures for every mod in the game.

There is twilight... but it is empty

Won't you post it in the WIP subgames section ?

I will very soon, I have some things to fix first.

I have uploaded it: https://forum.minetest.net/viewtopic.php?f=50&t=14051