Ok, now that we have got our bird working, let’s add more!
First, let’s create a new variable for keeping a list of birds.
Add the following to Game.py:
# Game.py
class Game:
def __init__(self):
self.screen = turtle.Screen()
self.bird = None
##
+ self.birds = []
self.world = 0
self.current_world = WORLDS[self.world]
self.score = 0
self.score_display = turtle.Turtle()
##
Then everytime we create a bird we’ll add it to that list.
Add the following to Game.py:
# Game.py
def create_robot_bird(self):
##
bird = RobotBird(
colour='#000000',
shape='classic',
speed=3,
game=self,
start_position=self.current_world.bird_start_position
)
self.bird = bird
+ self.birds.append(bird)
##
pass
Let’s test it out! Make a bunch of birds and make them all move.
Add the following to Game.py:
# Game.py
turtle.listen()
game = Game()
game.create_base_world()
game.draw_world()
##
game.create_user_turtle((0, 0))
game.create_robot_bird()
+game.create_robot_bird()
+game.create_robot_bird()
while True:
+ for bird in game.birds:
+ bird.move()
- game.bird.move()
##
turtle.mainloop()
Run the game and make sure you can see multiple birds moving around.