Teleport player between worlds / dimensions

[vyPal]

I've searched existing issues and couldn't find a duplicate.

• I confirm this is not a duplicate.

Is your feature request related to a problem? Please describe.

I am working on a multiverse-like plugin for pumpkin to allow easy management of multiple worlds and dimensions, and I was working on implementing the logic to teleport the player to either the same world but a different dimension, or a entirely different world, but I noticed there was no functionality to do this easily. I tried to make my own implementation of such a function, but I do not have a large understanding of which packets need to be communicated during such a teleport.

Furthermore, I have found that the current structure of certain structs (like the Player and Entity structs) lack support for changing the dimension (the necessary structs are behind a non-mutable shared reference).

So in total it looks like a lot of change will have to take place to allow this, and I sadly don't have the knowledge (or time) to implement such large changes. Therefore I will leave this issue here, so that someone might get to this in the future.

Describe the solution you'd like

Add a method (or multiple methods) to allow moving a player between worlds/dimensions.
Example:

impl Player {
    pub async fn teleport_to_world(&self, destination: Arc<World>, position: Vector3<f64>, yaw: f32, pitch: f32) {}
}

[vyPal]

I guess I'm adding it myself #524

[vyPal]

or #532