Editor code completion

[Ughuuu]

I really must say this package is one of the closest ones to completion I have seen out there for Godot. If it had support for code completion it would be way more usable in the editor, similar to how GDScript does. Not 100% sure what needs to be done for this.

My current guesses of what needs to be done is:

• LuaScriptInstance::get_script_instance_info::get_method_list: It seems like currently this is missing? It's hard to say, but it seems like in this area godot-cpp isn't using a cpp api (eg. needing a C structure, GDExtensionScriptInstanceInfo3, and having the need to manually override this).
• LuaScript::get_script_method_list - this is implemented, so idk if it would look here for that or not.
• LuaScriptLanguage::_get_public_functions - I tried adding here a basic implementation of 2 functions, similar to how GDScript does, but nothing updated on the UI.

Also, the generated code for functions and types would need to be fed into this mechanism.

[gilzoide]

Hey @Ughuuu, that would be a really nice addition, I totally agree.

Not 100% sure what needs to be done for this.

I think implementing LuaScriptLanguage::_complete_code is what's missing for code completions to start appearing when editing Lua code. Then implementing the rest would likely give other information necessary.

But this is not a trivial feature, it requires parsing and understanding Lua code, something that we don't have yet. All we have right now is loading the Lua script.

[Ughuuu]

I think for start having the base node functions would be great. Do you know how to get those? I saw there is some codegen being done specifically foe this i think.

[gilzoide]

Do you know how to get those?

My suggestion is using ClassDB reflection at runtime, because it will work for any class and not only Nodes! And it will work independently of Godot version, fork, etcetera.