juggling_balls.py

# juggling_balls.py

import random
import turtle

class Ball(turtle.Turtle):
    MAX_VELOCITY = 5
    GRAVITY = 0.07
    BAT_VELOCITY_CHANGE = 8

    def __init__(self, width, height):
        super().__init__()
        self.width = width
        self.height = height
        self.shape("circle")
        self.color(
            random.random(),
            random.random(),
            random.random(),
        )
        self.penup()
        self.setposition(
            random.randint(-self.width // 2, self.width // 2),
            random.randint(-self.height // 2, self.height // 2),
        )
        self.setheading(90)
        self.velocity = random.randint(1, self.MAX_VELOCITY)

    def move(self):
        self.forward(self.velocity)
        self.fall()

    def fall(self):
        self.velocity -= self.GRAVITY

    def is_out_of_bounds(self):
        if self.ycor() < -self.height // 2:
            self.hideturtle()
            return True
        return False

    def bat_up(self):
        self.velocity += self.BAT_VELOCITY_CHANGE