Python小游戏29乒乓球

import pygame

import sys

# 初始化pygame

pygame.init()

# 屏幕大小

screen_width = 800

screen_height = 600

screen = pygame.display.set_mode((screen_width, screen_height))

pygame.display.set_caption("打乒乓球")

 

# 颜色定义

WHITE = (255, 255, 255)

BLACK = (0, 0, 0)

 

# 球类

class Ball:

    def __init__(self, x, y, radius, color, x_vel, y_vel):

        self.x = x

        self.y = y

        self.radius = radius

        self.color = color

        self.x_vel = x_vel

        self.y_vel = y_vel

 

    def draw(self, screen):

        pygame.draw.circle(screen, self.color, (int(self.x), int(self.y)), self.radius)

 

    def move(self):