Monsters can attack player now

src/player.rs

@@ -28,9 +28,11 @@ impl Player {
     pub fn change_life(&mut self, by: i16) {
         self.life = max(0, min(self.max_life, self.life + by));
     }
+    /// returns true if the player is dead (life <= 0)
     pub fn get_life(&self) -> i16 {
         self.life
     }
+    pub fn is_dead(&self) -> bool { self.life <= 0 }
     pub fn get_max_life(&self) -> i16 {
         self.max_life
     }