simple transform animation

src/animation/mod.rs

@@ -0,0 +1,10 @@
+use bevy::{app::Update, prelude::Plugin};
+pub mod transform;
+
+pub struct AnimationPlugin;
+
+impl Plugin for AnimationPlugin {
+    fn build(&self, app: &mut bevy::app::App) {
+        app.add_systems(Update, transform::transform_animation);
+    }
+}

src/animation/transform.rs

@@ -0,0 +1,20 @@
+use bevy::prelude::*;
+
+#[derive(Component)]
+pub struct AnimatedTransform {
+    pub translation: Vec3,
+}
+
+impl AnimatedTransform {
+    pub fn from_xyz(x: f32, y: f32, z: f32) -> Self {
+        AnimatedTransform {
+            translation: Vec3 { x, y, z },
+        }
+    }
+}
+
+pub fn transform_animation(query: Query<(&mut Transform, &AnimatedTransform)>) {
+    for (mut transform, anim_transform) in query {
+        transform.translation = transform.translation.lerp(anim_transform.translation, 0.5);
+    }
+}

src/card/mod.rs

@@ -1,3 +1,4 @@
+use crate::animation::transform::AnimatedTransform;
 use bevy::prelude::*;
 
 pub mod drag;
@@ -41,7 +42,7 @@ fn hand_setup(mut commands: Commands, asset_server: Res<AssetServer>) {
 }
 
 fn card_arrange(
-    query: Query<(Entity, &mut Transform, &Sprite, &ChildOf), With<Card>>,
+    query: Query<(Entity, &mut AnimatedTransform, &Sprite, &ChildOf), With<Card>>,
     hand: Single<(Entity, &Children), With<Hand>>,
     assets: Res<Assets<Image>>,
 ) {
@@ -67,6 +68,7 @@ fn card_add(
     commands.spawn((
         Sprite::from_image(card_image.0.clone()),
         Transform::from_xyz(0., 0., 0.),
+        AnimatedTransform::from_xyz(0., 0., 0.),
         Card,
         ChildOf(hand.entity()),
     ));

src/main.rs

@@ -1,5 +1,6 @@
 use bevy::{audio::Volume, prelude::*};
 
+mod animation;
 mod buttons;
 mod card;
 mod dev_tools;
@@ -13,6 +14,7 @@ fn main() {
             card::CardPlugin,
             dev_tools::DevToolsPlugin,
             buttons::ButtonPlugin,
+            animation::AnimationPlugin,
         ))
         .add_systems(Startup, setup)
         .run();