Don't remove player using combat system

src/systems/combat.rs

@@ -12,6 +12,12 @@ pub fn combat(ecs: &mut SubWorld, commands: &mut CommandBuffer) {
         .collect();
 
     victims.iter().for_each(|(message, victim)| {
+        let is_player = ecs
+            .entry_ref(*victim)
+            .unwrap()
+            .get_component::<Player>()
+            .is_ok();
+
         if let Ok(mut health) = ecs
             .entry_mut(*victim)
             .unwrap()
@@ -19,7 +25,7 @@ pub fn combat(ecs: &mut SubWorld, commands: &mut CommandBuffer) {
         {
             println!("Health before attack: {}", health.current);
             health.current -= 1;
-            if health.current < 1 {
+            if health.current < 1 && !is_player {
                 commands.remove(*victim);
             }
             println!("Health after attack: {}", health.current);