Migration works

src/plate_automation.rs

@@ -3,7 +3,7 @@ use crate::basic::{IntoImage, Table};
 use bevy::asset::{Assets, RenderAssetUsages};
 use bevy::image::{BevyDefault, Image};
 use bevy::input::ButtonInput;
-use bevy::prelude::{Component, KeyCode, Query, ResMut, Sprite};
+use bevy::prelude::{Component, KeyCode, Query, Res, ResMut, Sprite};
 use bevy::render::render_resource::{Extent3d, TextureDimension, TextureFormat};
 use rand::RngExt;
 use rand_chacha::ChaCha8Rng;
@@ -12,6 +12,9 @@ pub fn update_automation_view_plate(
     query: Query<(&Sprite, &PlateAutomation)>,
     mut images: ResMut<Assets<Image>>,
 ) {
+    if query.is_empty() {
+        return;
+    }
     let (sprite, automation) = query.iter().next().unwrap();
     let size = automation.world.side as u32;
     let data = automation.world.get_image_data();
@@ -34,8 +37,12 @@ pub fn update_automation_view_plate(
 pub fn update_automation_plate(
     mut query: Query<&mut PlateAutomation>,
     mut seeded_rng: ResMut<SeededRng>,
-    keys: ResMut<ButtonInput<KeyCode>>,
+    keys: Res<ButtonInput<KeyCode>>,
 ) {
+    if query.is_empty() {
+        return;
+    }
+    
     let mut automation = query.iter_mut().next().unwrap();
     if keys.just_pressed(KeyCode::Space) {
         let random = &mut seeded_rng.0;
@@ -55,14 +62,6 @@ pub struct PlateAutomation {
 
 impl PlateAutomation {
     fn next(&mut self, rng: &mut ChaCha8Rng) {
-        let len = (self.world.side * self.world.side) as f32;
-        loop {
-            let index = (rng.random::<f32>() * len) as usize;
-            if *self.world.get(index) {
-                continue;
-            }
-            self.world.set(index, true);
-            break;
-        }
+        println!("Next for plate automation");
     }
 }