new: initial implementation

Cargo.lock

@@ -1669,6 +1669,7 @@ version = "0.1.0"
 dependencies = [
  "bevy",
  "bevy_egui",
+ "vsort",
 ]
 
 [[package]]
@@ -3867,6 +3868,12 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "vsort"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11331a1b48f99ea6bb27faae41399d08783d055ddee131e1b1b70a854207ebf8"
+
 [[package]]
 name = "walkdir"
 version = "2.5.0"

Cargo.toml

@@ -5,4 +5,6 @@ edition = "2021"
 
 [dependencies]
 bevy = "0.14"
-bevy_egui = "0.28"
+bevy_egui = "0.28"
+# natord = "1.0"
+vsort = "0.2"

src/main.rs

@@ -1,16 +1,67 @@
-use bevy::prelude::*;
-use bevy_egui::{egui, EguiContexts, EguiPlugin};
+use bevy::{prelude::*, winit::WinitSettings};
+use bevy_egui::{
+    egui::{self},
+    EguiContexts, EguiPlugin,
+};
+
+#[cfg(windows)]
+const LINE_ENDING: &str = "\r\n";
+#[cfg(not(windows))]
+const LINE_ENDING: &str = "\n";
+
+#[derive(Resource)]
+struct InputText {
+    value: String,
+}
+
+#[derive(Resource)]
+struct OutputText {
+    value: String,
+}
 
 fn main() {
     App::new()
+        .insert_resource(WinitSettings::desktop_app())
+        .insert_resource(InputText {
+            value: "".to_string(),
+        })
+        .insert_resource(OutputText {
+            value: "".to_string(),
+        })
         .add_plugins(DefaultPlugins)
         .add_plugins(EguiPlugin)
-        .add_systems(Update, ui_example_system)
+        .add_systems(Update, ui_system)
+        .add_systems(Update, process_text)
         .run();
 }
 
-fn ui_example_system(mut contexts: EguiContexts) {
-    egui::Window::new("Hello").show(contexts.ctx_mut(), |ui| {
-        ui.label("world");
+fn process_text(input_text: Res<InputText>, mut output_text: ResMut<OutputText>) {
+    let mut arr = input_text.value.lines().collect::<Vec<_>>();
+    arr.sort_by(|&a, &b| vsort::compare(a, b));
+    output_text.value = arr.join(LINE_ENDING);
+}
+
+fn ui_system(
+    mut contexts: EguiContexts,
+    mut input_text: ResMut<InputText>,
+    mut output_text: ResMut<OutputText>,
+) {
+    egui::CentralPanel::default().show(contexts.ctx_mut(), |ui| {
+        ui.horizontal(|ui| {
+            ui.vertical(|ui| {
+                ui.label("input: ");
+                ui.add_sized(
+                    [ui.available_width() / 2.0, ui.available_height()],
+                    egui::TextEdit::multiline(&mut input_text.value),
+                );
+            });
+            ui.vertical(|ui| {
+                ui.label("output: ");
+                ui.add_sized(
+                    [ui.available_width() / 2.0, ui.available_height()],
+                    egui::TextEdit::multiline(&mut output_text.value),
+                );
+            });
+        });
     });
 }