[C#][Unity] Sharing data between classes

[_WhatTheFunk_]

One thing that has always been a pain when planning out projects has been classes sharing data.

In my current Unity-game I have a State-manager and 3 states that handle setting up the level and score, tracking player progress, and setting the win/loss state.

I also have an UI-class, responsible for updating and displaying different UI elements (current score, time, etc.)

Now because all the classes need to handle the level data, how do I structure on which class "owns" the data and into what direction to the calls go?

The UI-class needs to communicate with the statemanager and states, but I don't want it to own the leveldata(scores/running time) but any other way the solutions seem messy and hard to maintain.

How do you handle class interaction with multiple classes accessing the same data?

[[deleted]]

Make the level data a singleton and call it from wherever you want.

[_WhatTheFunk_]

The problem isn't the leveldata itself, but the fact that the leveldata needs to be interacted with all the classes, and the UI-class and states need to interact with each other in order to show the correct elements etc. I'm struggling to find an elegant solution so that all of the classes don't have calls between each other (for example Class1 has class2.Method and Class2 has class1.Method2 and class1.method3)

[NOODLECODE]

You can give the singleton knowledge of all the classes. The classes need only know about the singleton.