[Documentation] List of All Engine functions

[Rickzzs]

local DirectCFunctions = {}
local CMetatables = {}
local MetaReference = {}
local token = "[C]"
local function GetDefinition(fn)
  local from = debug.getinfo(fn, "S")
  return from.what, from.source, from.linedefined
end
local function FilterMetatable(meta)
  local ret = {}
  for k, v in pairs(meta) do
    if type(v) == "function" then
      local from, source, line = GetDefinition(v)
      if from == "C" then
        ret[k] = token
      else
        ret[k] = (source or "?") .. ":" .. (line or "?")
      end
    else
      ret[k] = v
    end
  end
  return ret
end
for k, v in pairs(_G) do
  if type(v) == "function" then
    local from = GetDefinition(v)
    if from == "C" then DirectCFunctions[k] = v end
  elseif type(v) == "userdata" then
    local meta = getmetatable(v)
    if meta then
      local t = meta.__index
      if type(t) == "table" then
        if MetaReference[t] then
          CMetatables[k] = MetaReference[t]
        else
          local name = tostring(t)
          if name then print(k, name) end
          CMetatables[k] = FilterMetatable(t)
          MetaReference[t] = k
        end
      else
        CMetatables[k] = t
      end
    end
  elseif type(v) == "table" and k ~= "_G" then
    if MetaReference[v] then
      CMetatables[k] = MetaReference[v]
    else
      local _, firstfn = next(v)
      if type(firstfn) == "function" then
        local from = GetDefinition(firstfn)
        if from == "C" then
          CMetatables[k] = FilterMetatable(v)
          MetaReference[v] = k
        end
      end
    end
  end
end
local function PrettyPrint(t)
  local strs = {}
  local function i(x)
    table.insert(strs, tostring(x))
    return i
  end
  local function escape(s)
    s = tostring(s)
    return s:gsub("\\", "\\\\"):gsub("'", "\\\"")
  end
  for k, v in pairs(t) do
    i(k)("=")
    if type(v) ~= "table" then
      i(v)
    else
      i("{\n")
      for n, f in pairs(v) do
        i(n)("=")
        if f == token then
          i("function(...)print('C')end")
        else
          i("function(...)print('" .. escape(f) .. "')end")
        end
        i(",\n")
      end
      i("}")
    end
    i("\n")
  end
  return table.concat(strs)
end
function _G.PrintFunctions()
  print(PrettyPrint({direct = DirectCFunctions}))
  print(PrettyPrint(CMetatables))
end
function _G.DumpFunctions()
  local f = io.open("engine.lua", "w")
  if not f then
    print("error: failed to open engine.lua")
    return
  end
  f:write(PrettyPrint({direct = DirectCFunctions}))
  f:write(PrettyPrint(CMetatables))
  f:close()
end

So it helps to list all the C functions for VS Code lua extension.

 

 

 

engine.lua

Edited March 5, 2023 by Rickzzs

[Lyserus]

Can you help me with an example on how to use

TheInventory:CheckClientOwnership and inst.AnimState:AssignItemSkins

in a non-player prefab lua to change its skin to DLC ones?

 

I am trying to create a follower and want it to look like wanda, I've been stuck for a long long time now