step to xp

src/game.rs

@@ -168,6 +168,10 @@ impl Game {
                 // TODO fight the monster
                 self.player.change_life(-1);
                 m.decrease_life(1);
+                // monster died, player gains experience
+                if m.is_dead() {
+                    self.player.gain_experience(m.get_experience_gain());
+                }
                 return m.is_dead();
             }
         };