This is a Lua library you are able to add to mods in order to modify P3D files dynamically. There are a couple of benefits of doing this over doing static edits in the CustomFiles folder.

1. If you're only changing 1 or 2 chunks in a file, it takes less space in your mod to edit it dynamically in Lua.
2. If you want to change things based on a Mod Setting, you would have to create a static P3D file for every setting, whereas you can have a single file in Lua.

1. Download the latest P3D.zip from https://github.com/Hampo/LuaP3DLib/releases.
2. Extract the contents to the /Resources/lib folder of your mod.
3. Add dofile(GetModPath() .. "/Resources/lib/P3D2.lua") to the CustomFiles.lua of your mod.
4. Add P3D.LoadChunks(GetModPath() .. "/Resources/lib/P3DChunks") after the previous line in CustomFiles.lua.
5. (Optional) Make an additional file called P3DFunctions.lua in the same lib folder to contain your P3D-related functions.
   • You will also need to do dofile(GetModPath() .. "/Resources/lib/P3DFunctions.lua") in CustomFiles.lua.
6. Add the following Authors to your Meta.ini:

[Author]
Name=Proddy
Website=https://github.com/Hampo/LuaP3DLib
Notes=P3D Class System
Group=LuaP3DLib
Credits=1

[Author]
Name=EnAppelsin
Website=https://github.com/EnAppelsin
Notes=Original P3D Lua idea
Group=LuaP3DLib
Credits=1

[Author]
Name=Lucas Cardellini
Website=https://lucasstuff.com/
Notes=P3D Chunk Structures
Group=LuaP3DLib
Credits=1

You can find complete mods in the Examples folder.

local Path = GetPath()
local GamePath = "/GameData/" .. Path

local P3DFile = P3D.P3DFile(GamePath)
-- P3DFile now has `:GetChunk`, `:GetChunks`, `:GetChunkIndexed`, `:GetChunksIndexed`, `:AddChunk`, `RemoveChunk`

-- After modifications
P3DFile:Output()

for chunk in P3DFile:GetChunks(P3D.Identifiers.Locator) do -- You can find a full list of Identifiers in `P3D2.lua`
	chunk.Position.X = chunk.Position.X   20
end

for chunk in P3DFile:GetChunks(P3D.Identifiers.Locator, true) do -- You can find a full list of Identifiers in `P3D2.lua`
	P3D:RemoveChunk(chunk)
end

local Path = GetPath()
local GamePath = "/GameData/" .. Path

local P3DFile = P3D.P3DFile(GamePath)
for chunk in P3DFile:GetChunks(P3D.Identifiers.Locator, true) do -- You can find a full list of Identifiers in `P3D2.lua`
	P3D:RemoveChunk(chunk)
end

P3DFile:Output()