the alien says "Hello World" if you talk to it

src/actor.rs

@@ -1,13 +1,25 @@
 use bevy::prelude::*;
-use crate::nature;
+use crate::{nature, settings, actor, audio, hud};
+
+const MIN_INTERACT_DISTANCE: f32 = 30.0;
 
 pub struct ActorPlugin;
 impl Plugin for ActorPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(FixedUpdate, update);
+        app.add_systems(Update, (
+            handle_conversations,
+            handle_input,
+        ));
+        app.add_event::<StartConversationEvent>();
     }
 }
 
+#[derive(Event)]
+pub struct StartConversationEvent {
+    pub conv: String
+}
+
 #[derive(Component)]
 pub struct Actor {
     pub hp: f32,
@@ -26,6 +38,15 @@ impl Default for Actor {
     }
 }
 
+#[derive(Component)] pub struct Player;
+#[derive(Component)] pub struct PlayerInConversation;
+#[derive(Component)] pub struct InConversationWithPlayer;
+
+#[derive(Component)]
+pub struct Talker {
+    pub conv: String,
+}
+
 #[derive(Component)]
 pub struct LifeForm {
     pub adrenaline: f32,
@@ -71,8 +92,39 @@ pub fn update(
     }
 }
 
-#[derive(Component)]
-pub struct Player;
+pub fn handle_input(
+    keyboard_input: Res<ButtonInput<KeyCode>>,
+    settings: ResMut<settings::Settings>,
+    query: Query<(&Talker, &Transform)>,
+    player: Query<&Transform, With<actor::Player>>,
+    mut ew_conv: EventWriter<StartConversationEvent>,
+    mut ew_click: EventWriter<audio::AudioClickEvent>,
+)
+{
+    if keyboard_input.just_pressed(settings.key_interact) {
+        let mindist = MIN_INTERACT_DISTANCE * MIN_INTERACT_DISTANCE;
+        if let Ok(player) = player.get_single() {
+            for (talker, transform) in &query {
+                if transform.translation.distance_squared(player.translation) <= mindist {
+                    ew_conv.send(StartConversationEvent{conv: talker.conv.clone()});
+                    ew_click.send(audio::AudioClickEvent());
+                    break;
+                }
+            }
+        }
+    }
+}
+
+pub fn handle_conversations(
+    mut er_conv: EventReader<StartConversationEvent>,
+    mut log: ResMut<hud::Log>,
+) {
+    for my_event in er_conv.read() {
+        log.add(my_event.conv.clone());
+        break;
+    }
+}
+
 
 //pub enum SuitSystemHandler {
 //    Heat,

src/hud.rs

@@ -21,8 +21,8 @@ impl Plugin for HudPlugin {
     }
 }
 
-#[derive(Component)]
-struct GaugesText;
+#[derive(Component)] struct GaugesText;
+#[derive(Component)] struct ChatText;
 
 #[derive(Resource)]
 struct FPSUpdateTimer(Timer);
@@ -33,7 +33,7 @@ struct Message {
 }
 
 #[derive(Resource)]
-struct Log {
+pub struct Log {
     logs: VecDeque<Message>,
 }
 
@@ -192,6 +192,28 @@ fn setup(
         bundle_fps,
         GaugesText,
     ));
+
+    // Add Chat Box
+//    let bundle_chatbox = TextBundle::from_sections([
+//        TextSection::new(
+//            "Hello :D",
+//            TextStyle {
+//                font: asset_server.load(FONT),
+//                font_size: settings.font_size_hud,
+//                color: Color::GRAY,
+//                ..default()
+//            }
+//        ),
+//    ]).with_style(Style {
+//        position_type: PositionType::Absolute,
+//        bottom: Val::VMin(40.0),
+//        left: Val::VMin(30.0),
+//        ..default()
+//    });
+//    commands.spawn((
+//        bundle_chatbox,
+//        ChatText,
+//    ));
 }
 
 fn update(

src/settings.rs

@@ -21,6 +21,7 @@ pub struct Settings {
     pub key_down: KeyCode,
     pub key_run: KeyCode,
     pub key_stop: KeyCode,
+    pub key_interact: KeyCode,
 }
 
 impl Default for Settings {
@@ -45,6 +46,7 @@ impl Default for Settings {
             key_down: KeyCode::ControlLeft,
             key_run: KeyCode::KeyR,
             key_stop: KeyCode::Space,
+            key_interact: KeyCode::KeyE,
         }
     }
 }

src/world.rs

@@ -73,10 +73,7 @@ pub fn setup(
         actor::Suit {
             oxygen: nature::OXY_M,
             ..default()
-        }
-    ));
-
-    commands.spawn((
+        },
         Camera3dBundle {
             camera: Camera {
                 hdr: true, // HDR is required for bloom
@@ -193,7 +190,10 @@ pub fn setup(
     }
 
     // Add alien
-    commands.spawn(SceneBundle {
+    commands.spawn((
+        actor::Actor::default(),
+        actor::Talker { conv: "Hello World!".to_string() },
+        SceneBundle {
             transform: Transform {
                 translation: Vec3::new(
                     0.0,
@@ -205,7 +205,8 @@ pub fn setup(
             },
             scene: asset_server.load(ASSET_ASTRONAUT),
             ..default()
-        });
+        },
+    ));
 
     // Space is DARK
     ambient_light.brightness = 0.0;