enemy can drop key

src/gates.rs

@@ -1,4 +1,4 @@
-use crate::{movables::TriggerMovableEvent, npc::KeyCollected};
+use crate::{keys::KeyCollected, movables::TriggerMovableEvent};
 use bevy::{prelude::*, utils::hashbrown::HashSet};
 
 #[derive(Resource)]
@@ -26,11 +26,6 @@ fn on_key(
             AudioPlayer::new(asset_server.load("sfx/effects/gate.ogg")),
             PlaybackSettings::DESPAWN,
         ));
-        //TODO: put into actual key collect once we have that
-        commands.spawn((
-            AudioPlayer::new(asset_server.load("sfx/effects/key_collect.ogg")),
-            PlaybackSettings::DESPAWN,
-        ));
 
         let entities: HashSet<_> = vec!["fence_01", "fence_02"]
             .into_iter()

src/keys.rs

@@ -0,0 +1,80 @@
+use crate::player::Player;
+use avian3d::prelude::*;
+use bevy::prelude::*;
+use std::f32::consts::PI;
+
+#[derive(Event, Reflect)]
+pub struct KeySpawn(pub Vec3);
+
+#[derive(Component, Reflect)]
+#[reflect(Component)]
+struct Key;
+
+#[derive(Event, Reflect)]
+pub struct KeyCollected;
+
+pub fn plugin(app: &mut App) {
+    app.add_systems(Update, collect_key);
+    app.add_observer(on_spawn);
+}
+
+fn on_spawn(
+    trigger: Trigger<KeySpawn>,
+    mut commands: Commands,
+    mut meshes: ResMut<Assets<Mesh>>,
+    mut materials: ResMut<Assets<StandardMaterial>>,
+) {
+    let KeySpawn(position) = trigger.event();
+
+    let mesh = meshes.add(Cylinder::default());
+
+    //TODO: randomize
+    let spawn_dir = Quat::from_rotation_y(PI / 2.) * Vec3::new(0.5, 0.6, 0.).normalize();
+
+    commands
+        .spawn((
+            Name::new("key"),
+            Key,
+            Transform::from_translation(*position),
+            Visibility::default(),
+            Collider::sphere(1.5),
+            ExternalImpulse::new(spawn_dir * 180.).with_persistence(false),
+            LockedAxes::ROTATION_LOCKED,
+            RigidBody::Dynamic,
+            Restitution::new(0.6),
+        ))
+        .with_child((
+            Transform::from_scale(Vec3::new(2.2, 0.4, 2.2))
+                .with_rotation(Quat::from_rotation_x(PI / 2.)),
+            Mesh3d(mesh),
+            MeshMaterial3d(materials.add(Color::srgb(0., 0., 0.9))),
+        ));
+}
+
+fn collect_key(
+    mut commands: Commands,
+    mut collision_event_reader: EventReader<CollisionStarted>,
+    query_player: Query<&Player>,
+    query_collectable: Query<&Key>,
+    asset_server: Res<AssetServer>,
+) {
+    for CollisionStarted(e1, e2) in collision_event_reader.read() {
+        let collectable = if query_player.contains(*e1) && query_collectable.contains(*e2) {
+            Some(*e2)
+        } else if query_player.contains(*e2) && query_collectable.contains(*e1) {
+            Some(*e1)
+        } else {
+            None
+        };
+
+        if let Some(collectable) = collectable {
+            commands.spawn((
+                AudioPlayer::new(asset_server.load("sfx/effects/key_collect.ogg")),
+                PlaybackSettings::DESPAWN,
+            ));
+
+            commands.trigger(KeyCollected);
+            commands.entity(collectable).despawn_recursive();
+        }
+    }
+}

src/main.rs

@@ -5,6 +5,7 @@ mod camera;
 mod cash;
 mod gates;
 mod heads_ui;
+mod keys;
 mod movables;
 mod npc;
 mod platforms;
@@ -61,12 +62,14 @@ fn main() {
     //     });
 
     app.add_plugins(PhysicsPlugins::default());
-    // app.add_plugins(PhysicsDebugPlugin::default());
     app.add_plugins((
         TnuaControllerPlugin::new(FixedUpdate),
         TnuaAvian3dPlugin::new(FixedUpdate),
     ));
 
+    // app.add_plugins(PhysicsDebugPlugin::default());
+    // app.add_plugins(bevy_inspector_egui::quick::WorldInspectorPlugin::default());
+
     app.add_systems(Update, Dolly::<MainCamera>::update_active);
 
     app.add_plugins(alien::plugin);
@@ -80,12 +83,12 @@ fn main() {
     app.add_plugins(aim::plugin);
     app.add_plugins(shooting::plugin);
     app.add_plugins(npc::plugin);
+    app.add_plugins(keys::plugin);
 
     app.insert_resource(AmbientLight {
         color: Color::WHITE,
         brightness: 400.,
     });
-    app.add_plugins(bevy_inspector_egui::quick::WorldInspectorPlugin::default());
 
     app.add_plugins(TrenchBroomPlugin(TrenchBroomConfig::new("hedz")));
 

src/npc.rs

@@ -1,4 +1,4 @@
-use crate::tb_entities::EnemySpawn;
+use crate::{keys::KeySpawn, tb_entities::EnemySpawn};
 use bevy::prelude::*;
 
 #[derive(Event, Reflect)]
@@ -6,10 +6,6 @@ pub struct Hit {
     pub damage: u32,
 }
 
-// TODO: add actual keys
-#[derive(Event, Reflect)]
-pub struct KeyCollected;
-
 #[derive(Component, Reflect)]
 struct Hp(i32);
 
@@ -23,10 +19,14 @@ fn init(mut commands: Commands, query: Query<Entity, (With<EnemySpawn>, Without<
     }
 }
 
-fn on_hit(trigger: Trigger<Hit>, mut commands: Commands, mut query: Query<&mut Hp>) {
+fn on_hit(
+    trigger: Trigger<Hit>,
+    mut commands: Commands,
+    mut query: Query<(&mut Hp, &Transform, &EnemySpawn)>,
+) {
     let Hit { damage } = trigger.event();
 
-    let Ok(mut hp) = query.get_mut(trigger.entity()) else {
+    let Ok((mut hp, transform, enemy)) = query.get_mut(trigger.entity()) else {
         return;
     };
 
@@ -36,6 +36,9 @@ fn on_hit(trigger: Trigger<Hit>, mut commands: Commands, mut query: Query<&mut H
 
     if hp.0 <= 0 {
         commands.entity(trigger.entity()).despawn_recursive();
-        commands.trigger(KeyCollected);
+
+        if enemy.has_key {
+            commands.trigger(KeySpawn(transform.translation));
+        }
     }
 }

src/tb_entities.rs

@@ -85,6 +85,7 @@ pub struct MoveTarget {
 #[model({ "path": "models/alien_naked.glb" })]
 pub struct EnemySpawn {
     pub head: String,
+    pub has_key: bool,
 }
 
 impl EnemySpawn {