Chapter 45: Lifetimes and Assigning Renderable components

[Zij-IT]

While going along with the tutorial, it was mentioned that you couldn't resolve the lifetime issues at the time. I am just dropping this off as a solution with lifetimes. My Renderer component differs slightly from the tutorial one, so I have adapted my code to it for this.

I believe the reason that the lifetimes are necessary, is because EntityBuilder::with() returns Self. This means that the passed EntityBuilder must live at least as long as assign_render is running, and since we build upon the passed builder, the one that we return must also live as long as the passed EntityBuilder, hence the connection between the three.

fn assign_render<'a>(new_entity: EntityBuilder<'a>, render: &RawRender) -> EntityBuilder<'a> {
    new_entity.with(Renderable {
            glyph: render.glyph,
            fg: render.fg,
            bg: render.bg,
            colors,
    })
}