Input replication (#62)

crates/shared/src/backpack/mod.rs

@@ -5,11 +5,12 @@ use crate::{
     cash::CashCollectEvent, global_observer, head_drop::HeadCollected, heads::HeadState,
     heads_database::HeadsDatabase,
 };
-pub use backpack_ui::BackpackAction;
 use bevy::prelude::*;
+use serde::{Deserialize, Serialize};
 pub use ui_head_state::UiHeadState;
 
-#[derive(Resource, Default)]
+#[derive(Component, Default, Reflect, Serialize, Deserialize, PartialEq)]
+#[reflect(Component)]
 pub struct Backpack {
     pub heads: Vec<HeadState>,
 }
@@ -38,7 +39,7 @@ impl Backpack {
 pub struct BackbackSwapEvent(pub usize);
 
 pub fn plugin(app: &mut App) {
-    app.init_resource::<Backpack>();
+    app.register_type::<Backpack>();
 
     app.add_plugins(backpack_ui::plugin);
 
@@ -48,14 +49,18 @@ pub fn plugin(app: &mut App) {
 fn on_head_collect(
     trigger: Trigger<HeadCollected>,
     mut cmds: Commands,
-    mut backpack: ResMut<Backpack>,
+    mut backpack: Query<&mut Backpack>,
     heads_db: Res<HeadsDatabase>,
-) {
+) -> Result {
     let HeadCollected(head) = *trigger.event();
 
+    let mut backpack = backpack.get_mut(trigger.target())?;
+
     if backpack.contains(head) {
         cmds.trigger(CashCollectEvent);
     } else {
         backpack.insert(head, heads_db.as_ref());
     }
+
+    Ok(())
 }