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src/counter.rs

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+use bevy::prelude::*;
+use derive_more::{Deref, DerefMut};
+
+#[derive(Resource, Default)]
+pub struct Counter {
+    pub count: u32,
+}
+
+impl Counter {
+    pub fn new() -> Self {
+        Counter { count: 0 }
+    }
+
+    pub fn increase(&mut self, delta: u32) {
+        self.count += delta;
+    }
+
+    pub fn reset(&mut self) {
+        self.count = 0;
+    }
+}
+
+#[derive(Resource, Default, Deref, DerefMut)]
+pub struct BubbleExplodedCountThisFrame(pub Counter);
+
+#[derive(Resource, Default, Deref, DerefMut)]
+pub struct BubbleSuckedCountThisFrame(pub Counter);
+
+#[derive(Resource, Default, Deref, DerefMut)]
+pub struct KirbyHitCountThisFrame(pub Counter);
+
+fn reset_frame_counters(
+    mut bubble_sucked: ResMut<BubbleSuckedCountThisFrame>,
+    mut bubble_exploded: ResMut<BubbleExplodedCountThisFrame>,
+    mut kirby_hit: ResMut<KirbyHitCountThisFrame>,
+) {
+    bubble_sucked.reset();
+    bubble_exploded.reset();
+    kirby_hit.reset();
+}
+
+pub struct CounterPlugin;
+
+impl Plugin for CounterPlugin {
+    fn build(&self, app: &mut App) {
+        app.insert_resource(BubbleSuckedCountThisFrame::default())
+            .insert_resource(BubbleExplodedCountThisFrame::default())
+            .insert_resource(KirbyHitCountThisFrame::default())
+            .add_systems(FixedPostUpdate, reset_frame_counters);
+    }
+}