How to reference components from other components?

[TwilightMage]

So, this is my use case.
I have one Terrain component on a scene. Terrain does management of chunks (Chunk) spawned across the world. At some moment I may need to get chunk by some position (if it exist), so I want to store Chunk references at dictionary. What type should I use?

[SkiFire13]

You can use a Entity to "reference" (not in the sense of holding an actual Rust reference though) another entity. To get a &Chunk out of it you'll have to take a Query<&Chunk> and call get on it passing the Entity.

[TwilightMage]

Yeah, that might work. I just add from myself that you need to pass &mut World around to construct query on a fly and also to fetch the component, but that's pretty much similar to UE world context.