Simple ai shooting PoC (#23)

src/npc.rs

@@ -1,6 +1,7 @@
 use crate::{
     GameState,
-    heads::HEAD_COUNT,
+    ai::Ai,
+    heads::{HEAD_COUNT, HeadState},
     hitpoints::{Hitpoints, Kill},
     keys::KeySpawn,
     player::head_id_to_str,
@@ -9,8 +10,9 @@ use crate::{
 use bevy::prelude::*;
 use std::collections::HashMap;
 
-#[derive(Component)]
-pub struct NpcHead(pub usize);
+#[derive(Component, Reflect, Deref, DerefMut)]
+#[reflect(Component)]
+pub struct Npc(HeadState);
 
 pub fn plugin(app: &mut App) {
     app.add_systems(OnEnter(GameState::Playing), init);
@@ -25,7 +27,11 @@ fn init(mut commands: Commands, query: Query<(Entity, &EnemySpawn)>) {
         let id = names[&spawn.head];
         commands
             .entity(e)
-            .insert((Hitpoints::new(100), NpcHead(id)))
+            .insert((
+                Hitpoints::new(100),
+                Npc(HeadState::new(id, 10).with_ability(crate::abilities::HeadAbility::Thrown)),
+                Ai,
+            ))
             .observe(on_kill);
     }
 }