The end goal of the game is to have multiple sections of a beach that Myrtle moves through. Right now we have one section of beach, or “world”, but eventually we are going to want many. Each world will have obstacles in different places, as well as an umbrella for shelter, which acts as the portal to next part of the beach (aka the next world). Eventually we’ll also have food that Myrtle can eat to collect extra points.
We’re going to put all of these worlds in a list together.
We’ve designed the first one for you, you’ll make your own shortly.
Add the following to worlds.py:
# worlds.py
from World import World
WORLDS = [
##
World(
obstacle_positions=[
(0, 7), (1, 7), (2, 1), (2, 2), (3, 2), (3, 6), (4, 6),
(4, 9), (5, 0), (5, 1), (5, 2), (5, 3), (5, 4), (5, 9),
(5, 10), (6, 9), (7, 3), (7, 4), (7, 5), (7, 6), (7, 9),
(8, 6), (9, 0), (9, 1), (9, 4), (9, 6), (10, 6)
],
portal_position=(10, 0),
bird_start_position=(10, 10),
food_position=(1, 10)
)
##
]
Since we have now saved a world in our worlds.py file, we can remove the starter world from Game.py, and use our new world instead:
# Game.py
class Game:
def __init__(self):
self.screen = turtle.Screen()
- self.current_world = World(
- obstacle_positions=[],
- portal_position=(0, 1),
- bird_start_position=(0, 2),
- food_position=(0, 3)
- )
self.bird = None
##
+ self.world = 0
+ self.current_world = WORLDS[self.world]
##
Previously, we manually defined each obstacle, but now we want to create an obstacle for every coordinate given in the list in worlds.py.
Let’s remove our code from earlier and replace it with a for loop:
# World.py
def draw_obstacles(self):
##
- position = convert_coord_to_grid_pos((0, 7))
- Obstacle(ROCK, position)
- position = convert_coord_to_grid_pos((1, 7))
- Obstacle(ROCK, position)
- position = convert_coord_to_grid_pos((2, 1))
- Obstacle(ROCK, position)
- position = convert_coord_to_grid_pos((2, 2))
- Obstacle(ROCK, position)
- position = convert_coord_to_grid_pos((3, 2))
- Obstacle(ROCK, position)
- position = convert_coord_to_grid_pos((3, 6))
- Obstacle(ROCK, position)
+ for position in self.obstacle_positions:
+ position = convert_coord_to_grid_pos(position)
+ Obstacle(ROCK, position)
##
pass
Not only does this make our code neater, but it also means that if you change the coordinates in worlds.py, the obstacles will still be created in the correct place.
Run the code and make sure you can see all the obstacles!