feat: Implement timer settings in start screen

src/features/start_screen/components.rs

@@ -1,9 +1,11 @@
+use crate::features::phase::components::TimerSettings;
 use crate::prelude::*;
 
 /// Markers for main menu UI.
 #[derive(Component)]
 pub enum RootMarker {
     MainMenu,
+    Settings,
 }
 
 /// Buttons in the main menu.
@@ -13,3 +15,6 @@ pub enum ButtonType {
     NewGame,
     Settings,
 }
+
+#[derive(Resource, Default, Debug)]
+pub struct StartScreenTimerSettings(pub Option<TimerSettings>);

src/features/start_screen/mod.rs

@@ -1,17 +1,30 @@
+use crate::features::hud::components::{SettingsTimerInput, TimerType};
+use crate::features::phase::components::TimerSettings;
 use crate::features::savegame::ui::spawn_load_popup;
 use crate::prelude::*;
 use components::*;
+use ui::settings::open_settings_menu;
 
 pub mod components;
+pub mod ui;
 
 /// Plugin for the main menu screen.
 pub struct StartScreenPlugin;
 
 impl Plugin for StartScreenPlugin {
     fn build(&self, app: &mut App) {
+        app.init_resource::<StartScreenTimerSettings>();
         app.add_systems(OnEnter(AppState::StartScreen), setup);
         app.add_systems(OnExit(AppState::StartScreen), cleanup);
-        app.add_systems(Update, menu.run_if(in_state(AppState::StartScreen)));
+        app.add_systems(
+            Update,
+            (menu, handle_settings_buttons, update_timer_settings_display)
+                .run_if(in_state(AppState::StartScreen)),
+        );
+        app.add_systems(
+            PostUpdate,
+            apply_start_screen_settings.run_if(in_state(AppState::GameScreen)),
+        );
     }
 }
 
@@ -70,8 +83,7 @@ fn menu(
 ) {
     for (interaction, button_type) in &mut interaction_query {
         match *interaction {
-            Interaction::Pressed => {
-                match button_type {
+            Interaction::Pressed => match button_type {
                 ButtonType::LoadGame => {
                     spawn_load_popup(&mut commands);
                 }
@@ -79,9 +91,10 @@ fn menu(
                     commands.insert_resource(SavegamePath::next());
                     next_state.set(AppState::GameScreen);
                 }
-                    ButtonType::Settings => todo!(),
-                };
+                ButtonType::Settings => {
+                    open_settings_menu(&mut commands);
                 }
+            },
             _ => (),
         }
     }
@@ -93,3 +106,79 @@ fn cleanup(mut commands: Commands, query: Query<Entity, With<RootMarker>>) {
         commands.entity(entity).despawn();
     }
 }
+
+/// Handles button interactions within the settings menu.
+fn handle_settings_buttons(
+    mut interaction_query: Query<
+        (&Interaction, &crate::features::hud::components::ButtonType),
+        (Changed<Interaction>, With<Button>),
+    >,
+    mut timer_settings: ResMut<TimerSettings>,
+    mut ss_timer_settings: ResMut<StartScreenTimerSettings>,
+    keys: Res<ButtonInput<KeyCode>>,
+) {
+    let shift_multiplier = if keys.any_pressed([KeyCode::ShiftLeft, KeyCode::ShiftRight]) {
+        10
+    } else {
+        1
+    };
+
+    for (interaction, button_type) in &mut interaction_query {
+        if *interaction == Interaction::Pressed {
+            if let crate::features::hud::components::ButtonType::SettingsTimerChange {
+                input,
+                amount,
+            } = button_type
+            {
+                match input {
+                    SettingsTimerInput::Minutes(timer_type) => {
+                        timer_settings.change(timer_type, 60 * amount * shift_multiplier)
+                    }
+                    SettingsTimerInput::Seconds(timer_type) => {
+                        timer_settings.change(timer_type, *amount * shift_multiplier)
+                    }
+                }
+                ss_timer_settings.0 = Some(timer_settings.clone());
+            }
+        }
+    }
+}
+
+/// Updates the timer settings display in the settings menu.
+fn update_timer_settings_display(
+    timer_settings: Res<TimerSettings>,
+    mut query: Query<(&SettingsTimerInput, &mut Text)>,
+) {
+    for (input_type, mut text) in query.iter_mut() {
+        match input_type {
+            SettingsTimerInput::Minutes(timer_type) => {
+                let value = match timer_type {
+                    TimerType::Focus => timer_settings.focus_duration,
+                    TimerType::ShortBreak => timer_settings.short_break_duration,
+                    TimerType::LongBreak => timer_settings.long_break_duration,
+                } as f32;
+
+                text.0 = format!("{:0>2}", (value / 60.0).floor());
+            }
+            SettingsTimerInput::Seconds(timer_type) => {
+                let value = match timer_type {
+                    TimerType::Focus => timer_settings.focus_duration,
+                    TimerType::ShortBreak => timer_settings.short_break_duration,
+                    TimerType::LongBreak => timer_settings.long_break_duration,
+                };
+
+                text.0 = format!("{:0>2}", (value % 60));
+            }
+        }
+    }
+}
+
+/// Applies the timer settings from the start screen once the game screen is entered.
+fn apply_start_screen_settings(
+    mut settings: ResMut<TimerSettings>,
+    mut ss_settings: ResMut<StartScreenTimerSettings>,
+) {
+    if let Some(new_settings) = ss_settings.0.take() {
+        *settings = new_settings;
+    }
+}