--- a/src/th06/enemy.rs
+++ b/src/th06/enemy.rs
@@ -280,6 +280,8 @@ pub struct Enemy {
     pub(crate) boss: bool,
     pub(crate) automatic_orientation: bool,
     pub(crate) delay_attack: bool,
+    // Actually part of type_ atm.
+    pub(crate) mirror: bool,
 
     // Tuples.
     pub(crate) difficulty_coeffs: DifficultyCoeffs,
@@ -315,19 +317,21 @@ pub struct Enemy {
 
 impl Enemy {
     /// Create a new enemy.
-    pub fn new(pos: Position, life: i32, bonus_dropped: u32, die_score: u32, anm0: Weak<RefCell<Anm0>>, game: Weak<RefCell<Game>>) -> Rc<RefCell<Enemy>> {
+    pub fn new(pos: Position, life: i16, bonus_dropped: i16, die_score: u32, mirror: bool, anm0: Weak<RefCell<Anm0>>, game: Weak<RefCell<Game>>) -> Rc<RefCell<Enemy>> {
         let game_rc = game.upgrade().unwrap();
         let mut enemy = Enemy {
             pos,
             anm0,
             game,
             visible: true,
-            bonus_dropped,
+            // XXX: shouldn’t be u32, since that can be -1.
+            bonus_dropped: bonus_dropped as u32,
             die_score,
             life: if life < 0 { 1 } else { life as u32 },
             touchable: true,
             collidable: true,
             damageable: true,
+            mirror,
             ..Default::default()
         };
         let mut game = game_rc.borrow_mut();
@@ -457,7 +461,7 @@ impl Enemy {
 
         let dx = self.angle.cos() * speed;
         let dy = self.angle.sin() * speed;
-        if self.type_ & 2 != 0 {
+        if self.mirror {
             x -= dx;
         } else {
             x += dx;