key mesh and squishy animation

src/keys.rs

@@ -1,4 +1,4 @@
-use crate::player::Player;
+use crate::{billboards::Billboard, player::Player, squish_animation::SquishAnimation};
 use avian3d::prelude::*;
 use bevy::prelude::*;
 use std::f32::consts::PI;
@@ -18,19 +18,14 @@ pub fn plugin(app: &mut App) {
     app.add_observer(on_spawn);
 }
 
-fn on_spawn(
-    trigger: Trigger<KeySpawn>,
-    mut commands: Commands,
-    mut meshes: ResMut<Assets<Mesh>>,
-    mut materials: ResMut<Assets<StandardMaterial>>,
-) {
+fn on_spawn(trigger: Trigger<KeySpawn>, mut commands: Commands, asset_server: Res<AssetServer>) {
     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();
 
+    let mesh = asset_server.load(GltfAssetLabel::Scene(0).from_asset("models/key.glb"));
+
     commands
         .spawn((
             Name::new("key"),
@@ -43,12 +38,7 @@ fn on_spawn(
             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))),
-        ));
+        .with_child((Billboard, SquishAnimation(2.6), SceneRoot(mesh)));
 }
 
 fn collect_key(

src/main.rs

@@ -11,6 +11,7 @@ mod npc;
 mod platforms;
 mod player;
 mod shooting;
+mod squish_animation;
 mod tb_entities;
 
 use avian3d::PhysicsPlugins;
@@ -84,6 +85,7 @@ fn main() {
     app.add_plugins(shooting::plugin);
     app.add_plugins(npc::plugin);
     app.add_plugins(keys::plugin);
+    app.add_plugins(squish_animation::plugin);
 
     app.insert_resource(AmbientLight {
         color: Color::WHITE,

src/squish_animation.rs

@@ -0,0 +1,20 @@
+use bevy::prelude::*;
+use ops::sin;
+
+#[derive(Component, Reflect)]
+#[reflect(Component)]
+pub struct SquishAnimation(pub f32);
+
+pub fn plugin(app: &mut App) {
+    app.add_systems(Update, update);
+}
+
+fn update(mut query: Query<(&mut Transform, &SquishAnimation)>, time: Res<Time>) {
+    for (mut transform, keymesh) in query.iter_mut() {
+        transform.scale = Vec3::new(
+            keymesh.0,
+            keymesh.0 + (sin(time.elapsed_secs() * 6.) * 0.2),
+            keymesh.0,
+        );
+    }
+}