feat: Add placeholder interact menu (#25)

src/features/input/mod.rs

@@ -19,6 +19,7 @@ impl Plugin for InputPlugin {
         app.add_systems(Update, move_click.run_if(in_state(AppState::GameScreen)));
 
         app.add_message::<InteractStartMessage>();
+        app.add_message::<TileClickMessage>();
         app.add_systems(
             Update,
             interact_click.run_if(in_state(AppState::GameScreen)),
@@ -65,7 +66,7 @@ fn move_click(
 }
 
 fn interact_click(
-    mut interact_messages: MessageWriter<InteractStartMessage>,
+    mut tile_click_messages: MessageWriter<TileClickMessage>,
     mouse_btn: Res<ButtonInput<MouseButton>>,
     keys: Res<ButtonInput<KeyCode>>,
     window: Single<&Window, With<PrimaryWindow>>,
@@ -88,7 +89,7 @@ fn interact_click(
         };
 
         println!("Interact Click: ({}, {})", x, y);
-        interact_messages.write(InteractStartMessage { x, y });
+        tile_click_messages.write(TileClickMessage { x, y });
     }
 }
 

src/features/pom/messages.rs

@@ -16,3 +16,9 @@ pub struct InteractStartMessage {
     pub x: u32,
     pub y: u32,
 }
+
+#[derive(Message)]
+pub struct TileClickMessage {
+    pub x: u32,
+    pub y: u32,
+}

src/features/pom/mod.rs

@@ -7,12 +7,14 @@ use utils::manhattan_distance;
 
 pub mod components;
 pub mod messages;
+pub mod ui;
 pub mod utils;
 
 pub struct PomPlugin;
 
 impl Plugin for PomPlugin {
     fn build(&self, app: &mut App) {
+        app.add_plugins(ui::PomUiPlugin);
         app.add_systems(OnEnter(AppState::GameScreen), setup);
         app.add_systems(OnExit(AppState::GameScreen), cleanup);
 

src/features/pom/ui/context_menu.rs

@@ -0,0 +1,122 @@
+use crate::features::ui::utils::ui_blocks;
+use crate::prelude::*;
+use bevy::window::PrimaryWindow;
+
+#[derive(Component)]
+pub enum RootMarker {
+    ContextMenu,
+}
+
+#[derive(Component)]
+pub enum ButtonType {
+    Interact { x: u32, y: u32 },
+    Cancel,
+}
+
+pub fn spawn_context_menu(
+    mut commands: Commands,
+    mut tile_click_messages: MessageReader<TileClickMessage>,
+    root_query: Query<Entity, With<RootMarker>>,
+    camera_query: Single<(&Camera, &GlobalTransform), With<Camera2d>>,
+    config: Res<GameConfig>,
+) {
+    for message in tile_click_messages.read() {
+        // Despawn existing menu
+        for entity in root_query.iter() {
+            commands.entity(entity).try_despawn();
+        }
+
+        let world_pos = grid_to_world_coords(
+            message.x,
+            message.y,
+            Some(0.0),
+            config.grid_width,
+            config.grid_height,
+        );
+
+        let (camera, camera_transform) = *camera_query;
+
+        if let Ok(screen_pos) = camera.world_to_viewport(camera_transform, world_pos) {
+            commands
+                .spawn((
+                    Node {
+                        position_type: PositionType::Absolute,
+                        left: px(screen_pos.x),
+                        top: px(screen_pos.y),
+                        padding: UiRect::all(px(5.0)),
+                        ..Node::vstack(px(5.0))
+                    },
+                    ZIndex(100),
+                    BackgroundColor(Color::srgb(0.1, 0.1, 0.1)),
+                    BorderRadius::all(px(5)),
+                    RootMarker::ContextMenu,
+                ))
+                .with_children(|parent| {
+                    parent.spawn(button(
+                        ButtonType::Interact {
+                            x: message.x,
+                            y: message.y,
+                        },
+                        ButtonVariant::Primary,
+                        Node {
+                            padding: UiRect::all(px(5)),
+                            ..default()
+                        },
+                        |c| text("<Interact>", 20.0, c),
+                    ));
+
+                    parent.spawn(button(
+                        ButtonType::Cancel,
+                        ButtonVariant::Destructive,
+                        Node {
+                            padding: UiRect::all(px(5)),
+                            ..default()
+                        },
+                        |c| text("Abbrechen", 20.0, c),
+                    ));
+                });
+        }
+    }
+}
+
+pub fn click_outside_context_menu(
+    mut commands: Commands,
+    mouse_btn: Res<ButtonInput<MouseButton>>,
+    window: Single<&Window, With<PrimaryWindow>>,
+    ui_query: Query<(&ComputedNode, &GlobalTransform), With<Node>>,
+    root_query: Query<Entity, With<RootMarker>>,
+) {
+    if mouse_btn.just_pressed(MouseButton::Left) {
+        let Some(cursor_pos) = window.cursor_position() else {
+            return;
+        };
+
+        if !ui_blocks(window, cursor_pos, ui_query) {
+            for entity in root_query.iter() {
+                commands.entity(entity).try_despawn();
+            }
+        }
+    }
+}
+
+pub fn buttons(
+    mut commands: Commands,
+    mut button_query: Query<(&Interaction, &ButtonType), (Changed<Interaction>, With<Button>)>,
+    mut interact_messages: MessageWriter<InteractStartMessage>,
+    root_query: Query<Entity, With<RootMarker>>,
+) {
+    for (interaction, button_type) in button_query.iter_mut() {
+        if *interaction == Interaction::Pressed {
+            match button_type {
+                ButtonType::Interact { x, y } => {
+                    interact_messages.write(InteractStartMessage { x: *x, y: *y });
+                }
+                ButtonType::Cancel => (),
+            }
+
+            for entity in root_query.iter() {
+                commands.entity(entity).despawn();
+            }
+        }
+    }
+}

src/features/pom/ui/mod.rs

@@ -0,0 +1,22 @@
+use crate::prelude::*;
+
+pub mod context_menu;
+
+pub struct PomUiPlugin;
+
+impl Plugin for PomUiPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(
+            Update,
+            context_menu::spawn_context_menu.run_if(in_state(AppState::GameScreen)),
+        );
+        app.add_systems(
+            Update,
+            context_menu::click_outside_context_menu.run_if(in_state(AppState::GameScreen)),
+        );
+        app.add_systems(
+            Update,
+            context_menu::buttons.run_if(in_state(AppState::GameScreen)),
+        );
+    }
+}

src/prelude.rs

@@ -11,7 +11,7 @@ pub use crate::features::{
     phase::components::{CurrentPhase, Phase},
     pom::{
         components::{GridPosition, MovingState, Pom},
-        messages::{InteractStartMessage, MoveMessage},
+        messages::{InteractStartMessage, MoveMessage, TileClickMessage},
     },
     savegame::components::SavegamePath,
     ui::{components::ButtonVariant, consts::*, ui::*, utils::*},