Simple Plugin Example

[cowboy8625]

I am trying to wrap my brain around how to use mlua to mod a program from lua. I can easily see how you can write some Rust code and call the code from lua. However I can not see as of yet how I can use lua to mutate anything in the Rust internal code.
Is channels a solution for this or am I missing something? I am very sorry for the some what vague question and possibly really NOOB question but I have been struggling with this for a few weeks and I haven't seen much on this subject.

[cowboy8625]

I mean I see you can use tables but say I have something like

cursor = {13, 10}
-- And a lot of other variables

For every plugin do i have to iterate over every lua file to check all of them?

It seems slow I guess. I was thinking of having rust fuctions that would set or get data from the program.

Am I missing something?

[cowboy8625]

Welp I tryed that and I am getting an error that trait UserData is not impl for Rc<RefCell<Foo>>.

[khvzak]

Welp I tryed that and I am getting an error that trait UserData is not impl for Rc<RefCell<Foo>>.

This is very recent change, you need 0.6.0-beta.3

a944f4a

[cowboy8625]

What would you have done before this?

[khvzak]

You can always wrap inner parts of your struct to Arc/Rc to achieve the same:

struct FooInner {
    item: (u16, u16),
}

struct Foo(Rc<RefCell< FooInner>>);

impl UserData for Foo {}

[cowboy8625]

Thanks you explaining this to me.