fixed update_card_dimensions

src/lib.rs

@@ -50,12 +50,12 @@ pub fn setup(
 pub fn test_setup_hand(
     mut commands: Commands,
     asset_server: Res<AssetServer>,
-    //systems: Res<Systems>,
+    systems: Res<Systems>,
     query: Single<Entity, With<Hand>>
 ) {
     let hand_id = query.into_inner();
     for _ in 0..4 {
-        create_card(&mut commands, &asset_server, Some(hand_id));
+        create_card(&mut commands, &asset_server, Some(hand_id), &systems);
     }
 }
 
@@ -63,7 +63,7 @@ pub fn create_card(
     commands: &mut Commands,
     asset_server: &Res<AssetServer>,
     hand_entity: Option<Entity>,
-    //systems: &Res<Systems>
+    systems: &Res<Systems>
 ) {
     let mut card = commands.spawn((
         Card,
@@ -74,29 +74,32 @@ pub fn create_card(
     if let Some(hand) = hand_entity {
         card.set_parent(hand);
         commands.entity(hand).insert(JustUpdated);
-        //commands.run_system(systems.update_hand_dimensions);
+        commands.run_system(systems.update_hand_dimensions);
     }
 }
 
+// TODO: replace this const with getting asset dimensions from Assets<Image>
+const CARD_SPRITE_SIZE: Vec2 = Vec2::new(128., 192.);
+
 pub fn update_hand_dimensions(
     mut commands: Commands,
     p_query: Single<(Entity, &mut Sprite, &Children), (Added<JustUpdated>, With<Hand>)>,
     mut c_query: Query<(&mut Transform, &Sprite), (With<Card>, Without<Hand>)>,
-    assets: Res<Assets<Image>>
 ) {
     let mut hand = p_query.into_inner();
-    let mut counter = 0.;
-    let mut hand_total_width = 0.;
-    let mut hand_height = 0.;
-    for &child_id in hand.2.iter() {
+    let size = hand.2.iter().count();
+    let hor_margin = 8.;
+    let ver_margin = 8.;
+    let sprite_size = CARD_SPRITE_SIZE;
+    let hand_total_width = (sprite_size.x + hor_margin) * (size as f32);
+    let hand_height = ver_margin * 2. + sprite_size.y;
+    let hand_offset = (hand_total_width - sprite_size.x - hor_margin) / 2.; 
+
+    for (index, &child_id) in hand.2.iter().enumerate() {
         let Ok(mut child) = c_query.get_mut(child_id) else { continue; };
-        let sprite_size = assets.get(child.1.image.id()).unwrap().size_f32();
-        let hor_margin = Vec2::new(4., 0.);
-        let ver_margin = Vec2::new(0., 4.);
-        hand_total_width += sprite_size.x + hor_margin.x;
-        hand_height = sprite_size.y + ver_margin.y * 2.;
-        child.0.translation = Vec3::from((ver_margin + (sprite_size + hor_margin) * counter, 0.));
-        counter += 1.;
+        let offset_x = (sprite_size.x + hor_margin) * (index as f32) - hand_offset;
+        let offset_y = 0.;
+        child.0.translation = Vec3::from((Vec2::new(offset_x, offset_y), 1.));
     }
     hand.1.custom_size = Some(Vec2::new(hand_total_width, hand_height));
     commands.entity(hand.0).remove::<JustUpdated>();

src/main.rs

@@ -2,7 +2,7 @@ use bevy::prelude::*;
 
 use evolution_rs::{
     plugins::*,
-    setup, test_setup_hand, update_hand_dimensions
+    setup, test_setup_hand
 };
 
 
@@ -17,6 +17,6 @@ use evolution_rs::{
 fn main() {
     App::new()
         .add_plugins((DefaultPlugins,BasePropertiesPlugin))
-        .add_systems(Startup, (setup, test_setup_hand, update_hand_dimensions).chain())
+        .add_systems(Startup, (setup, test_setup_hand).chain())
         .run();
 }