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【作品展示】

 

【作品介绍】

弹球

 

【作品源代码】

# Listing_18-4_the_first_version_of_pypong.py
# Copyright Warren & Carter Sande, 2009-2019
# Released under MIT license   https://opensource.org/licenses/mit-license.php
# ------------

import pygame, sys
from pygame.locals import *

# The ball class definition
class Ball(pygame.sprite.Sprite):
    def __init__(self, image_file, speed, location):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location
        self.speed = speed

    def move(self):
        # Moves the ball (bounces it off top and sides)
        self.rect = self.rect.move(self.speed)
        if self.rect.left < 0 or self.rect.right > screen.get_width():
            self.speed[0] = -self.speed[0]

        if self.rect.top <= 0 :
            self.speed[1] = -self.speed[1]

# The paddle class definition
class Paddle(pygame.sprite.Sprite):
    def __init__(self, location = [0,0]):
        pygame.sprite.Sprite.__init__(self)
        image_surface = pygame.surface.Surface([100, 20])
        image_surface.fill([0,0,0])
        self.image = image_surface.convert()
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location

# Initializes Pygame, clock, ball, paddle
pygame.init()
screen = pygame.display.set_mode([喵0,480])
clock = pygame.time.Clock()
ball_speed = [10, 5]
myBall = Ball('wackyball.bmp', ball_speed, [50, 50])
ballGroup = pygame.sprite.Group(myBall)
paddle = Paddle([270, 400])

running = True
while running:  # The start of the main `while` loop
    clock.tick(30)
    screen.fill([255, 255, 255])
    for event in pygame.event.get():
        if event.type == QUIT:
            running = False
        # Moves paddle if mouse moves
        elif event.type == pygame.MOUSEMOTION:
            paddle.rect.centerx = event.pos[0]

    # Checks for ball hitting paddle
    if pygame.sprite.spritecollide(paddle, ballGroup, False):
        myBall.speed[1] = -myBall.speed[1]
    myBall.move()  # Moves the ball
    # Redraws everything
    screen.blit(myBall.image, myBall.rect)
    screen.blit(paddle.image, paddle.rect)
    pygame.display.flip()
pygame.quit()

 

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