simple hitpoint mechanic

src/shooting.rs

@@ -0,0 +1,31 @@
+use bevy::prelude::*;
+
+use crate::{aim::AimState, npc::Hit};
+
+#[derive(Event, Reflect)]
+pub enum TriggerState {
+    Active,
+    Inactive,
+}
+
+pub fn plugin(app: &mut App) {
+    app.add_observer(on_trigger_state);
+}
+
+fn on_trigger_state(
+    trigger: Trigger<TriggerState>,
+    mut commands: Commands,
+    asset_server: Res<AssetServer>,
+    aim: Res<AimState>,
+) {
+    if matches!(trigger.event(), TriggerState::Active) {
+        commands.spawn((
+            AudioPlayer::new(asset_server.load("sfx/abilities/gun.ogg")),
+            PlaybackSettings::DESPAWN,
+        ));
+
+        if let Some(target) = aim.target {
+            commands.entity(target).trigger(Hit { damage: 20 });
+        }
+    }
+}