Cleanup the avocado generation

avocado.py

@@ -7,15 +7,6 @@ class Avocado:
 
     def __init__(self, screen, color, size, target, filename='img/AvoCado_0.png'):
 
-        # HELP please!!
-        # We randomly decide whether we should instanciate or not
-        # I'd rather just not return an instance,
-        # but I don't know how to do that :(
-        if random.randint(0,40) != 1:
-            self.is_still_falling = False
-            self.has_been_pinned = False
-            return None
-
         # Set up our instance variables
         self.screen = screen
         self.color = color

game.py

@@ -168,7 +168,8 @@ class TheGame:
                 avocados_in_game = len(avocados)
                 avocadosWanted = level * multiplier
                 if avocados_in_game < avocadosWanted:
-                    for i in range(avocados_in_game, avocadosWanted):
+                    blah = int(1.0/(avocadosWanted - avocados_in_game) * 100)
+                    if random.randint(0, blah) == 1:
                         avocolor = self.chooseRandomColor()
                         avosize = (50, 50)   # should we randomize this?
                         a = avocado.Avocado(self.screen, avocolor, avosize, color)