Compiler asking for lifetime in struct when lifetime is given

Question

I\'m trying to write the examples in the book \"SFML Game Development\" but I\'m having a problem with the lifetimes for the struct that\'s supposed to represent the game wo

Answer 1

Why is it asking for a lifetime if I have given it one?

Because you haven't given it the lifetime where it's needed. Look closely at the error message. It's telling you that CircleShape is missing a lifetime, not the reference to CircleShape (although that's also needed).

Review the definition of CircleShape:

pub struct CircleShape<'s> { /* fields omitted */ }

It has been parameterized by a lifetime, so you need to provide one:

pub struct Game<'s> {
    mWindow: RenderWindow,
    mPlayer: &'s CircleShape<'s>,
}

Whether that's correct for your case, I can't say, but it should compile.