Extending a lua class doesn't work

[danielwaterworth]

./foo.lua

local Foo = {
  extends = Resource,
  class_name = "Foo",
}
return Foo

./bar.lua

local Foo = ResourceLoader:load("res://foo.lua")
local Bar  = {
  extends = Foo,
  class_name = "Bar",
}
return Bar

WARNING: src/script-language/LuaScriptMetadata.cpp:58 - Specified base class '' does not exist, using RefCounted

It doesn't work if you pass in the name as a string either.

[gilzoide]

Hey @danielwaterworth , thanks for the report.

Extending other scripts in Lua isn't implemented yet. This would be done in LuaScript with additional support from LuaScriptMetadata, if anyone is interested.

[sjl057]

i am interested, tried to do this a few days ago and realized i couldnt so i made a chain of requires

(edit: this is for lua scripts being run through luastate)

[gilzoide]

Hey @sjl057. Extending Lua classes via LuaScript (that is, using Godot's Class/Object model) is a completely different thing from doing so "manually" in a custom LuaState. Since Lua has some different of ways of doing OOP, I see little point in choosing a single one and bundling in this project.

Look for "Lua OOP" or "Lua class" or "Lua class system" and you'll find a number of articles and projects explaining how to have OOP-like "classes" in Lua, which as I understand is what you are trying to accomplish. If you need / want some assistance with that, create a new Discussion about it. This Issue is not the place for this discussion.

[sjl057]

gotcha, thank you

[illarn]

hello, @danielwaterworth, I fixed this in #225, if you want to test it or give any feedback I'd much appreciate it!