游戏说明：（macOS平台下开发调试）游戏视频
点击屏幕中间的Play按钮。屏幕顶部产生下落的随机字母，敲击键盘上响应的键对应字母消失。字母生成和坠落的速度随着时间由慢变快，难度逐渐增大。坠落到屏幕最下方的字母超过十个，游戏结束。
游戏设置了记分系统，敲对一个键记50分，敲错扣50分。游戏最高分和当前得分分别显示在顶端中间和右边。
另外还添加了背景音乐，敲对、敲错以及字母下落到底部的时候有不同的音效。
由于时间仓促，没有添加注释，这是程序的缺陷。如果以后有时间，会补充完善。
程序用到的字母图案和声音文件无法上传展示。
东抄西问的成果，感谢提供帮助的人。
1. alphabet_zoo.py
import pygame
import time
from pygame.locals import *
from settings import Settings
import game_functions as gf
from game_stats import GameStats
from button import Button
from scoreboard import Scoreboard
def run_game():
pygame.init()
az_settings = Settings()
screen = pygame.display.set_mode((1600, 900))
pygame.display.set_caption("Alphabet Zoo")
play_button = Button(screen, "Play")
stats = GameStats(az_settings)
sb = Scoreboard(az_settings, screen, stats)
letters = pygame.sprite.Group()
start = time.time()
sleeptime = az_settings.letter_generating_factor
pygame.mixer.init()
while True:
with open('high_score.txt') as file_object:
stats.high_score = int(file_object.read())
sb.prep_high_score()
now = time.time()
gf.check_events(az_settings, letters, stats, sb, play_button, screen)
if stats.game_active:
gf.update_screen(az_settings, stats, screen, letters, sb, play_button)
if now - start > sleeptime:
gf.letter_generator(stats, az_settings, screen, letters)
start = now
else:
gf.update_screen(az_settings, stats, screen, letters, sb, play_button)
pygame.mixer.music.stop()
run_game()
2. game_functions.py
import sys
import pygame
from letter import Letter
def letter_generator(stats, az_settings, screen, letters):
if stats.lives_left > 1:
new_letter = Letter(az_settings, screen)
letters.add(new_letter)
else:
letters.empty()
stats.game_active = False
pygame.mouse.set_visible(True)
def check_events(az_settings, letters, stats, sb, play_button, screen):
screen_rect = screen.get_rect()
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_x, mouse_y = pygame.mouse.get_pos()
check_play_button(az_settings, stats, play_button, mouse_x, mouse_y, sb)
elif event.type == pygame.KEYDOWN:
for ltr in letters:
if ltr.ascii == event.key and ltr.rect.bottom < screen_rect.bottom:
s1 = pygame.mixer.Sound("hit.wav")
s1.play()
stats.score += az_settings.letter_points
sb.prep_score()
check_high_score(stats, sb)
letters.remove(ltr)
elif ltr.ascii != event.key and ltr.rect.bottom < screen_rect.bottom and stats.score > 0:
s2 = pygame.mixer.Sound("wrong_hit.wav")
s2.play()
stats.score -= az_settings.letter_points
sb.prep_score()
def check_play_button(az_settings, stats, play_button, mouse_x, mouse_y, sb):
button_clicked = play_button.rect.collidepoint(mouse_x, mouse_y)
if button_clicked and not stats.game_active:
stats.reset_stats()
sb.prep_score()
az_settings.initialize_dynamic_settings()
pygame.mouse.set_visible(False)
stats.game_active = True
pygame.mixer.music.load("bg_music.mp3")
pygame.mixer.music.play(-1)
def letter_fallen(stats):
if stats.lives_left > 0:
stats.lives_left -= 1
print(stats.lives_left)
def check_letter_bottom(screen, letters, stats):
screen_rect = screen.get_rect()
for ltr in letters.sprites():
if ltr.rect.bottom > screen_rect.bottom:
s3 = pygame.mixer.Sound("oops.wav")
s3.play()
ltr.rect.bottom = screen_rect.bottom
letter_fallen(stats)
def update_screen(az_settings, stats, screen, letters, sb, play_button):
screen.fill(az_settings.bg_color)
check_letter_bottom(screen, letters, stats)
letters.draw(screen)
letters.update()
sb.show_score()
if not stats.game_active:
play_button.draw_button()
az_settings.increase_speed()
pygame.display.flip()
def check_high_score(stats, sb):
if stats.score > stats.high_score:
stats.high_score = stats.score
with open('high_score.txt', 'w') as file_object:
file_object.write(str(stats.high_score))
sb.prep_high_score()
3. button.py
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import pygame.font
class Button:
def __init__(self, screen, msg):
self.screen = screen
self.screen_rect = screen.get_rect()
self.width, self.height = 200, 50
self.button_color = (0, 0, 255)
self.text_color = (255, 255, 255)
self.font = pygame.font.SysFont(None, 48)
self.rect = pygame.Rect(0, 0, self.width, self.height)
self.rect.center = self.screen_rect.center
self.prep_msg(msg)
def prep_msg(self, msg):
self.msg_image = self.font.render(msg, True, self.text_color,
self.button_color)
self.msg_image_rect = self.msg_image.get_rect()
self.msg_image_rect.center = self.rect.center
def draw_button(self):
self.screen.fill(self.button_color, self.rect)
self.screen.blit(self.msg_image, self.msg_image_rect)
4. game_stats.py
class GameStats:
def __init__(self, az_settings):
self.az_settings = az_settings
self.reset_stats()
self.game_active = False
self.high_score = 0
def reset_stats(self):
self.lives_left = self.az_settings.lives_limit
self.score = 0
5. scoreboard.py
import pygame.font
class Scoreboard:
def __init__(self, az_settings, screen, stats):
self.screen = screen
self.screen_rect = screen.get_rect()
self.az_settings = az_settings
self.stats = stats
self.text_color = (255, 255, 255)
self.font = pygame.font.SysFont(None, 48)
self.prep_score()
self.prep_high_score()
def prep_score(self):
score_str = "{:,}".format(self.stats.score)
self.score_image = self.font.render(score_str, True, self.text_color,
self.az_settings.bg_color)
self.score_rect = self.score_image.get_rect()
self.score_rect.right = self.screen_rect.right - 20
self.score_rect.top = 20
def show_score(self):
self.screen.blit(self.score_image, self.score_rect)
self.screen.blit(self.high_score_image, self.high_score_rect)
def prep_high_score(self):
high_score_str = "{:,}".format(self.stats.high_score)
self.high_score_image = self.font.render(high_score_str, True,
self.text_color, self.az_settings.bg_color)
self.high_score_rect = self.high_score_image.get_rect()
self.high_score_rect.centerx = self.screen_rect.centerx
self.high_score_rect.top = self.score_rect.top
6. letter.py
import pygame
import random
from pygame.sprite import Sprite
class Letter(Sprite):
def __init__(self, az_settings, screen):
super().__init__()
self.screen = screen
self.az_settings = az_settings
a = random.randint(97, 122)
c = chr(a)
self.image = pygame.image.load('images/' + c.upper() + '.png')
self.ascii = a
self.rect = self.image.get_rect()
self.screen_rect = screen.get_rect()
self.rect.centerx = random.randint(100, self.screen_rect.right - 100)
self.rect.top = self.screen_rect.top
self.center = float(self.rect.centerx)
def update(self):
if self.rect.bottom < self.screen_rect.bottom:
self.rect.centery += self.az_settings.letter_speed_factor
7. settings.py
class Settings:
def __init__(self):
self.bg_color = (0, 0, 0)
self.falling_speed_increment = 0.01
self.letter_generating_increment = 0.1
self.lives_limit = 10
self.initialize_dynamic_settings()
def initialize_dynamic_settings(self):
self.letter_speed_factor = 5
self.letter_generating_factor = 3
self.letter_points = 50
def increase_speed(self):
self.letter_speed_factor += self.falling_speed_increment
self.letter_generating_factor -= self.letter_generating_increment