# author: Lisa Dion
# import the random number generator library module
import random
# set a list of speeds that we will choose from
speeds = [-4, -3, 3, 4]
# create the ball and set initial values
ball = codesters.Circle(0, 0, 50, "green")
ball.set_size(0.5)
ball.set_x_speed(speeds[random.randint(0, len(speeds)-1)])
ball.set_y_speed(speeds[random.randint(0, len(speeds)-1)])
# create rectangles for the paddles
# sprite = codesters.Rectangle(x, y, width, height, "color")
player1 = codesters.Rectangle(-230, 0, 10, 50, "yellow")
player2 = codesters.Rectangle(230, 0, 10, 50, "gray")
# create rectangles against the left and right walls
left_wall = codesters.Rectangle(-250, 0, 10, 500, "red")
right_wall = codesters.Rectangle(250, 0, 10, 500, "red")
# create a function for when 'w' is pressed
def w_key():
# make sure there is room to move up
if player1.get_y() < 220:
player1.move_up(20)
# create a function for when 's' is pressed
def s_key():
# make sure there is room to move down
if player1.get_y() > -220:
player1.move_down(20)
# create a function for when up is pressed
def up_key():
# make sure there is room to move up
if player2.get_y() < 220:
player2.move_up(20)
# create a function for when down is pressed
def down_key():
# make sure there is room to move down
if player2.get_y() > -220:
player2.move_down(20)
# make the program listen for the keys
stage.event_key("s", s_key)
stage.event_key("w", w_key)
stage.event_key("up", up_key)
stage.event_key("down", down_key)
# create a function to detect collision
def collision(sprite, hit_sprite):
# make ball bounce off paddles by changing its x-direction
ball.set_x_speed(-ball.get_x_speed())
# check if the ball hit the left or right wall
if hit_sprite.get_color() == "red":
# stop the ball
ball.set_x_speed(0)
ball.set_y_speed(0)
if hit_sprite.get_x() < 0:
# ball hit left wall.
message = codesters.Text("Player 2 wins!", 0, 0, "red")
else:
# ball hit right wall.
message = codesters.Text("Player 1 wins!", 0, 0, "red")
# make the program listen for collisions
ball.event_collision(collision)
