Wrong value in UI (Chapter 52)

[PierreGuyot]

rustrogueliketutorial/book/src/chapter_52.md

Line 244 in 33872fe

So we fetch the map from the ECS `World`, calculate the name's length (plus two for the wrapping characters). Then we figure out the centered position (over the map pane; so 22, half the pane width, *minus* half the length of the name). Then we draw the endcaps and the name. You can `cargo run` to see the improvement:

From what I understand, the half width is 24, and not 22 (that would be the half height of the pane).
The title doesn't seem to be centered on the matching screen.

What about extracting size constants to make the UI code easier to read? Something like this:

const STATUS_BOX_HEIGHT: i32 = 8; // Top-right panel
pub const CAMERA_WIDTH: i32 = 48;
pub const CAMERA_HEIGHT: i32 = 44;
pub const SCREEN_WIDTH: i32 = 80;
pub const SCREEN_HEIGHT: i32 = 60;

(The screen constants are already needed in main.rs for example, so it might help to have a single source of truth for these.)