Fixing GH-11 by adding a humans defeated check which ends the game if…

… there are no human players left.

project/game/gui.py

@@ -61,7 +61,11 @@ def __init__(self, control, display, model):
     def run(self):
         while self.state == "game":
 
-            if self.model_link.game_ended():
+            # Check for human defeat before game over as human defeat also means game over.
+            if self.model_link.humans_are_defeated():
+                if HumansDefeatedMessage not in [type(obj) for obj in self.persistent_guis]:
+                    self.humans_defeated_message()
+            elif self.model_link.game_ended():
                 # game ended at deletion of game over message (called in GameOverMessage on its "ok")
                 if GameOverMessage not in [type(obj) for obj in self.persistent_guis]:  # stops recalling when active
                     self.game_over_message()
@@ -193,6 +197,16 @@ def game_over_message(self):
 
         self.persistent_guis.insert(0, GameOverMessage(self, title, message))
 
+    def humans_defeated_message(self):
+        self.persistent_guis.clear()
+
+        title = "All humans have been destroyed!"
+        message = ["The computer players have defeated ",
+                   "all humans so the game is now over.",
+                   "Better luck next time!"]
+
+        self.persistent_guis.insert(0, HumansDefeatedMessage(self, title, message))
+
     def quit_message(self):
         self.save()
         self.persistent_guis.append(QuitMessage(self, "Are you sure you want to quit?",
@@ -742,6 +756,10 @@ def handle_click(self):
             self.GUI.end_game()
 
 
+class HumansDefeatedMessage(GameOverMessage):
+    pass
+
+
 class NextTurnMessage(Message):
     def handle_click(self):
         if self.ok_button.check_clicked():

project/game/model.py

@@ -55,7 +55,7 @@ def next_turn(self):
         self.get_current_player().end_turn()
 
         # Getting new human player turn
-        if not self.is_winner():  # if more than 1 player alive
+        if not self.is_winner() and not self.humans_are_defeated():  # if more than 1 player alive
             self.cycle_player()
         else:
             self.game_end = True
@@ -131,7 +131,7 @@ def handle_death(self):
             if self.check_death(player):
                 player.kill()
 
-                if self.is_winner():  # here, as otherwise must wait for next_turn call
+                if self.is_winner() or self.humans_are_defeated():  # here, as otherwise must wait for next_turn call
                     self.game_end = True
 
                 return player.get_name()  # assuming only one player died, return first found.
@@ -143,6 +143,9 @@ def check_death(self, player):
     def game_ended(self):
         return self.game_end
 
+    def humans_are_defeated(self):
+        return len([player for player in self.players if player.get_control() == "human" and not player.is_dead()]) == 0
+
     def is_winner(self):
         return len([player for player in self.players if not player.is_dead()]) == 1