Unity Coroutine — WaitUntil Guide

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This is how you wait for an operation to complete within a coroutine. It functions similarly to an async callback.

public WaitUntil(Func<bool> predicate);

The parameter takes a Func that returns a bool type.

Because of this, the function passed to WaitUntil keeps looping until it returns true. Once it returns true, the coroutine proceeds past the yield.

Note:

In Func<T>, the last generic type parameter represents the return type.

For example, Func<int, bool> means the parameter is of type int and the return type is bool.

Unity - Scripting API: WaitUntil.WaitUntil

Unity - Scripting API: WaitUntil