How to think like a Computer Scientist: 課後習題第十七章3

#-------------------------------------------------------------------------------
# Name:        module1
# Purpose:
#
# Author:      penglaixy
#
# Created:     08/09/2013
# Copyright:   (c) penglaixy 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------
import pygame
import random

card_image = pygame.image.load("cards.png")

cards_width = card_image.get_width()//13
cards_height = card_image.get_height()//4

class CardSprite:

    def __init__(self, img, num, target_pos):
        self.image = img
        self.card_in_row = num // 13
        self.card_in_col = num % 13
        self.pos = target_pos

    def draw(self, target_surface):
        patch_rect = (cards_width * self.card_in_col, cards_height * self.card_in_row, cards_width, cards_height)
        target_surface.blit(self.image, self.pos, patch_rect)
        return

def draw_board():
    '''
    Draw a chess board with queens, from the borad.
    '''
    pygame.init()

    surface_wz = cards_width * 5
    surface_ht = cards_height

    surface = pygame.display.set_mode((surface_wz, surface_ht))

    card_list =list(range(52))

    my_clock = pygame.time.Clock()
    print "Hello world!"

    while True:
        ev = pygame.event.poll()
        if ev.type == pygame.QUIT:
            break

        random.shuffle(card_list)

        card_queen = []
        for (col, card_num) in enumerate(card_list):
            if col == 5:
                break
            card_instance = CardSprite(card_image, card_num, (col*cards_width, 0))
            card_queen.append(card_instance)

        for sprite in card_queen:
            sprite.draw(surface)

        pygame.display.flip()
        my_clock.tick(4)

    pygame.quit()

def main():
    '''
    set up the game and run the main game loop
    '''
    draw_board()

if __name__ == '__main__':
    main()