Use a try/catch to check for the presence of actor/target.fighter in MeleeAction

erynrl/actions.py

@@ -199,12 +199,7 @@ class MeleeAction(MoveAction):
         self.target = target
 
     def perform(self, engine: 'Engine') -> ActionResult:
-        if not self.target:
-            return self.failure()
-
-        if not self.actor.fighter or not self.target.fighter:
-            return self.failure()
-
+        try:
             damage = self.actor.fighter.attack_power - self.target.fighter.defense
             if damage > 0 and self.target:
                 log.ACTIONS.debug('%s attacks %s for %d damage!', self.actor, self.target, damage)
@@ -220,7 +215,9 @@ class MeleeAction(MoveAction):
             if self.target.fighter.is_dead:
                 log.ACTIONS.info('%s is dead!', self.target)
                 return ActionResult(self, alternate=DieAction(self.target))
-
+        except AttributeError:
+            return self.failure()
+        else:
             return self.success()
 
 class WaitAction(Action):