use gamestates and assetloader

src/npc.rs

@@ -1,10 +1,9 @@
-use std::collections::HashMap;
-
 use crate::{
-    heads_ui::HEAD_COUNT, keys::KeySpawn, player::head_id_to_str, sounds::PlaySound,
+    GameState, heads_ui::HEAD_COUNT, keys::KeySpawn, player::head_id_to_str, sounds::PlaySound,
     tb_entities::EnemySpawn,
 };
 use bevy::prelude::*;
+use std::collections::HashMap;
 
 #[derive(Event, Reflect)]
 pub struct Hit {
@@ -31,10 +30,9 @@ impl Hitpoints {
 pub struct NpcHead(pub usize);
 
 pub fn plugin(app: &mut App) {
-    app.add_systems(Update, init);
+    app.add_systems(OnEnter(GameState::Playing), init);
 }
 
-// TODO: use game state to initialize only once
 fn init(mut commands: Commands, query: Query<(Entity, &EnemySpawn), Without<Hitpoints>>) {
     let mut names: HashMap<String, usize> = HashMap::default();
     for i in 0..HEAD_COUNT {