Re-export EguiWantsFocus resource (#38)

src/egui.rs

@@ -1,11 +1,19 @@
 use bevy::prelude::{DetectChangesMut, Query, ResMut, Resource};
 
+/// A resource that tracks whether egui wants focus on the current and previous frames.
+///
+/// The reason the previous frame's value is saved is because when you click inside an
+/// egui window, Context::wants_pointer_input() still returns false once before returning
+/// true. If the camera stops taking input only when it returns false, there's one frame
+/// where both egui and the camera are using the input events, which is not desirable.
+///
+/// This is re-exported in case it's useful. I recommend only using input events if both
+/// `prev` and `curr` are true.
 #[derive(Resource, PartialEq, Eq, Default)]
 pub struct EguiWantsFocus {
-    // Must track previous value too, because when you click inside an egui window,
-    // Context::wants_pointer_input() returns false once before returning true again, which
-    // is undesirable.
+    /// Whether egui wanted focus on the previous frame
     pub prev: bool,
+    /// Whether egui wants focus on the current frame
     pub curr: bool,
 }
 

src/lib.rs

@@ -8,7 +8,7 @@ use bevy::window::{PrimaryWindow, WindowRef};
 #[cfg(feature = "bevy_egui")]
 use bevy_egui::EguiSet;
 #[cfg(feature = "bevy_egui")]
-use egui::EguiWantsFocus;
+pub use egui::EguiWantsFocus;
 use std::f32::consts::{PI, TAU};
 
 #[cfg(feature = "bevy_egui")]