Update arcade_game.py

Author: Surja11

exercises/concept/ghost-gobble-arcade-game/arcade_game.py

@@ -9,7 +9,7 @@ def eat_ghost(power_pellet_active, touching_ghost):
     :return: bool - can a ghost be eaten?
     """
 
-    pass
+    return power_pellet_active and touching_ghost
 
 
 def score(touching_power_pellet, touching_dot):
@@ -19,8 +19,8 @@ def score(touching_power_pellet, touching_dot):
     :param touching_dot: bool - is the player touching a dot?
     :return: bool - has the player scored or not?
     """
-
-    pass
+    return touching_power_pellet or touching_dot
+    
 
 
 def lose(power_pellet_active, touching_ghost):
@@ -30,8 +30,8 @@ def lose(power_pellet_active, touching_ghost):
     :param touching_ghost: bool - is the player touching a ghost?
     :return: bool - has the player lost the game?
     """
-
-    pass
+    return touching_ghost and not power_pellet_active
+    
 
 
 def win(has_eaten_all_dots, power_pellet_active, touching_ghost):
@@ -43,4 +43,4 @@ def win(has_eaten_all_dots, power_pellet_active, touching_ghost):
     :return: bool - has the player won the game?
     """
 
-    pass
+    return has_eaten_all_dots and touching_ghost and not power_pellet_active