为什么我在执行代码 import pgzero import pgzrun def on_key_down(key): if key == keys.SPACE: sound.play('sound.wav') pgzrun.go() 时会报错：“sound.play('sound.wav')”中的sound变量/对象未定义

对不起，我之前给出的代码有误。在pgzero模块中，你需要使用`pgzrun`模块中的`pgzero`对象来访问`sound`对象。下面是修改后的代码：

import pgzero
import pgzrun

def on_key_down(key):
    if key == keys.SPACE:
        pgzero.sound.play('sound.wav')

pgzrun.go()

请注意，我修改了`sound.play('sound.wav')`为`pgzero.sound.play('sound.wav')`，以确保正确访问`sound`对象。现在你应该可以正常播放音频文件了。

相关问题

python 写一个 雷电游戏的代码

好的，下面是一个简单的 Python 雷电游戏代码，希望能帮到你：

import pygame
import random

# 定义常量
SCREEN_WIDTH = 480
SCREEN_HEIGHT = 800
BULLET_WIDTH = 8
BULLET_HEIGHT = 20
ENEMY_WIDTH = 50
ENEMY_HEIGHT = 50

# 初始化 Pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("雷电游戏")

# 加载背景图片
bg_img = pygame.image.load("bg.jpg").convert_alpha()

# 加载玩家飞机图片
player_img = pygame.image.load("player.png").convert_alpha()
player_rect = player_img.get_rect()
player_rect.centerx = SCREEN_WIDTH // 2
player_rect.bottom = SCREEN_HEIGHT - 20

# 加载子弹图片
bullet_img = pygame.image.load("bullet.png").convert_alpha()

# 加载敌机图片
enemy_img = pygame.image.load("enemy.png").convert_alpha()

# 加载游戏音效
bullet_sound = pygame.mixer.Sound("bullet.wav")
enemy_down_sound = pygame.mixer.Sound("enemy_down.wav")

# 定义子弹类
class Bullet(pygame.sprite.Sprite):
    def __init__(self, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = bullet_img
        self.rect = self.image.get_rect()
        self.rect.centerx = x
        self.rect.bottom = y
        self.speed = -10

    def update(self):
        self.rect.top += self.speed
        if self.rect.bottom < 0:
            self.kill()

# 定义敌机类
class Enemy(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = enemy_img
        self.rect = self.image.get_rect()
        self.rect.centerx = random.randint(ENEMY_WIDTH // 2, SCREEN_WIDTH - ENEMY_WIDTH // 2)
        self.rect.bottom = 0
        self.speed = random.randint(3, 5)

    def update(self):
        self.rect.top += self.speed
        if self.rect.top > SCREEN_HEIGHT:
            self.kill()

# 创建玩家飞机精灵组
player_group = pygame.sprite.Group()
player_group.add(pygame.sprite.Sprite())

# 创建子弹精灵组
bullet_group = pygame.sprite.Group()

# 创建敌机精灵组
enemy_group = pygame.sprite.Group()

# 设置游戏时钟
clock = pygame.time.Clock()

# 定义游戏结束函数
def game_over():
    font = pygame.font.SysFont(None, 48)
    text = font.render("Game Over", True, (255, 0, 0))
    text_rect = text.get_rect()
    text_rect.centerx = SCREEN_WIDTH // 2
    text_rect.centery = SCREEN_HEIGHT // 2
    screen.blit(text, text_rect)
    pygame.display.update()
    pygame.time.wait(2000)
    pygame.quit()
    exit()

# 游戏循环
while True:
    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                pygame.quit()
                exit()
            elif event.key == pygame.K_SPACE:
                bullet_sound.play()
                bullet = Bullet(player_rect.centerx, player_rect.top)
                bullet_group.add(bullet)

    # 处理键盘输入
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player_rect.left -= 5
        if player_rect.left < 0:
            player_rect.left = 0
    elif keys[pygame.K_RIGHT]:
        player_rect.right += 5
        if player_rect.right > SCREEN_WIDTH:
            player_rect.right = SCREEN_WIDTH
    elif keys[pygame.K_UP]:
        player_rect.top -= 5
        if player_rect.top < 0:
            player_rect.top = 0
    elif keys[pygame.K_DOWN]:
        player_rect.bottom += 5
        if player_rect.bottom > SCREEN_HEIGHT:
            player_rect.bottom = SCREEN_HEIGHT

    # 更新玩家飞机位置
    player_group.sprites()[0].rect = player_rect

    # 更新子弹位置
    bullet_group.update()

    # 更新敌机位置
    enemy_group.update()

    # 检测子弹是否击中敌机
    hits = pygame.sprite.groupcollide(bullet_group, enemy_group, True, True)
    for hit in hits:
        enemy_down_sound.play()
        enemy = Enemy()
        enemy_group.add(enemy)

    # 检测敌机是否撞到玩家飞机
    hits = pygame.sprite.spritecollide(player_group.sprites()[0], enemy_group, True)
    if hits:
        game_over()

    # 绘制游戏元素
    screen.blit(bg_img, (0, 0))
    player_group.draw(screen)
    bullet_group.draw(screen)
    enemy_group.draw(screen)
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(60)

python飞机大战代码

以下是基于Pygame库实现的简单飞机大战游戏的代码，希望能帮助到你：

import pygame
import random

# 初始化pygame
pygame.init()

# 游戏窗口大小
screen_width = 480
screen_height = 700

# 创建游戏窗口
screen = pygame.display.set_mode((screen_width, screen_height))

# 游戏标题
pygame.display.set_caption("飞机大战")

# 加载背景图片
bg_img = pygame.image.load("images/background.png").convert()

# 加载飞机图片
player_img = pygame.image.load("images/me1.png").convert_alpha()

# 加载子弹图片
bullet_img = pygame.image.load("images/bullet1.png").convert_alpha()

# 加载敌机图片
enemy_img = pygame.image.load("images/enemy1.png").convert_alpha()

# 加载爆炸图片
explosion_imgs = [
    pygame.image.load("images/enemy0_down1.png").convert_alpha(),
    pygame.image.load("images/enemy0_down2.png").convert_alpha(),
    pygame.image.load("images/enemy0_down3.png").convert_alpha(),
    pygame.image.load("images/enemy0_down4.png").convert_alpha()
]

# 加载游戏音效
bullet_sound = pygame.mixer.Sound("sounds/bullet.wav")
bullet_sound.set_volume(0.2)

explosion_sound = pygame.mixer.Sound("sounds/explosion.wav")
explosion_sound.set_volume(0.2)

bg_music = pygame.mixer.music.load("sounds/game_music.mp3")
pygame.mixer.music.play(-1)

# 定义游戏对象类
class GameObject:

    def __init__(self, img, x, y, speed):
        self.img = img
        self.rect = self.img.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed = speed

    def move(self):
        self.rect.y += self.speed

# 定义玩家飞机类
class Player(GameObject):

    def __init__(self, img, x, y, speed):
        super().__init__(img, x, y, speed)
        self.bullets = []
        self.is_hit = False

    def move_up(self):
        self.rect.y -= self.speed

    def move_down(self):
        self.rect.y += self.speed

    def move_left(self):
        self.rect.x -= self.speed

    def move_right(self):
        self.rect.x += self.speed

    def fire(self):
        bullet = Bullet(bullet_img, self.rect.centerx, self.rect.y, -10)
        self.bullets.append(bullet)
        bullet_sound.play()

# 定义子弹类
class Bullet(GameObject):

    def __init__(self, img, x, y, speed):
        super().__init__(img, x, y, speed)

    def move(self):
        self.rect.y += self.speed

# 定义敌机类
class Enemy(GameObject):

    def __init__(self, img, x, y, speed, hp):
        super().__init__(img, x, y, speed)
        self.hp = hp

    def move(self):
        self.rect.y += self.speed

    def hit(self):
        self.hp -= 1
        if self.hp == 0:
            explosion = Explosion(explosion_imgs, self.rect.centerx, self.rect.centery)
            explosions.append(explosion)
            explosion_sound.play()
            return True
        else:
            return False

# 定义爆炸类
class Explosion:

    def __init__(self, imgs, x, y):
        self.imgs = imgs
        self.img_index = 0
        self.image = self.imgs[self.img_index]
        self.rect = self.image.get_rect()
        self.rect.centerx = x
        self.rect.centery = y
        self.counter = 0

    def update(self):
        self.counter += 1
        if self.counter % 3 == 0:
            self.img_index += 1
            if self.img_index == len(self.imgs):
                return True
            else:
                self.image = self.imgs[self.img_index]
        return False

# 创建玩家飞机
player = Player(player_img, screen_width / 2 - player_img.get_width() / 2, screen_height - player_img.get_height() - 50, 5)

# 创建敌机列表和爆炸列表
enemies = []
explosions = []

# 游戏主循环
while True:

    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()

    # 处理玩家输入
    keys = pygame.key.get_pressed()
    if keys[pygame.K_UP]:
        player.move_up()
    if keys[pygame.K_DOWN]:
        player.move_down()
    if keys[pygame.K_LEFT]:
        player.move_left()
    if keys[pygame.K_RIGHT]:
        player.move_right()
    if keys[pygame.K_SPACE]:
        player.fire()

    # 创建敌机
    if random.randint(1, 100) == 1:
        enemy = Enemy(enemy_img, random.randint(0, screen_width - enemy_img.get_width()), -enemy_img.get_height(), random.randint(1, 3), 1)
        enemies.append(enemy)

    # 移动玩家飞机和子弹
    player.move()
    for bullet in player.bullets:
        bullet.move()

    # 移动敌机和判断是否被击中
    for enemy in enemies:
        enemy.move()
        for bullet in player.bullets:
            if enemy.rect.colliderect(bullet.rect):
                if enemy.hit():
                    enemies.remove(enemy)
                player.bullets.remove(bullet)
                break
        if enemy.rect.colliderect(player.rect):
            player.is_hit = True
            enemies.remove(enemy)
            break

    # 更新爆炸动画
    for explosion in explosions:
        if explosion.update():
            explosions.remove(explosion)

    # 绘制游戏界面
    screen.blit(bg_img, (0, 0))
    screen.blit(player.img, player.rect)
    for bullet in player.bullets:
        screen.blit(bullet.img, bullet.rect)
    for enemy in enemies:
        screen.blit(enemy.img, enemy.rect)
    for explosion in explosions:
        screen.blit(explosion.image, explosion.rect)

    # 更新游戏画面
    pygame.display.update()

    # 判断玩家是否死亡
    if player.is_hit:
        pygame.quit()
        exit()

注意：上述代码中的图片和音效资源需要自行下载并放置在正确的路径下。