用Python写一个飞机大战的游戏

好的，下面是用Python实现的简单飞机大战游戏。

首先，我们需要引入pygame库，它可以帮助我们创建游戏窗口、加载图片、播放音乐等。

import pygame
from pygame.locals import *
import sys
import random

接下来，定义一些常量，如窗口大小、背景音乐等。

WINDOW_WIDTH = 512
WINDOW_HEIGHT = 768
FPS = 60

BACKGROUND_IMAGE = 'images/background.png'
GAME_MUSIC = 'sounds/game_music.ogg'
BULLET_SOUND = 'sounds/bullet.wav'
ENEMY_DOWN_SOUND = 'sounds/enemy_down.wav'
GAME_OVER_SOUND = 'sounds/game_over.wav'

然后，创建游戏窗口，加载背景图片和音乐。

pygame.init()
pygame.mixer.init()
pygame.mixer.music.load(GAME_MUSIC)
pygame.mixer.music.play(-1)

window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption('Plane Game')

background = pygame.image.load(BACKGROUND_IMAGE)

接下来，定义一个函数，用于加载并返回图片。

def load_image(image_file):
    image = pygame.image.load(image_file)
    return image

然后，定义飞机和子弹的类。

class Plane(pygame.sprite.Sprite):
    def __init__(self, image_file, x, y):
        super().__init__()
        self.image = load_image(image_file)
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed = 5
        self.bullets = pygame.sprite.Group()

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

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

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

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

    def fire(self):
        bullet = Bullet('images/bullet.png', self.rect.centerx, self.rect.top)
        self.bullets.add(bullet)

    def update(self):
        self.bullets.update()

        for bullet in self.bullets.sprites():
            if bullet.rect.bottom < 0:
                self.bullets.remove(bullet)

    def draw(self, surface):
        surface.blit(self.image, self.rect)
        self.bullets.draw(surface)


class Bullet(pygame.sprite.Sprite):
    def __init__(self, image_file, x, y):
        super().__init__()
        self.image = load_image(image_file)
        self.rect = self.image.get_rect()
        self.rect.centerx = x
        self.rect.bottom = y
        self.speed = 10

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

接下来，定义敌机的类。

class Enemy(pygame.sprite.Sprite):
    def __init__(self, image_file, x, y):
        super().__init__()
        self.image = load_image(image_file)
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed = random.randint(2, 5)

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

        if self.rect.top > WINDOW_HEIGHT:
            self.kill()

然后，定义游戏结束的函数。

def game_over():
    pygame.mixer.music.stop()
    game_over_sound = pygame.mixer.Sound(GAME_OVER_SOUND)
    game_over_sound.play()
    game_over_font = pygame.font.SysFont(None, 48)
    game_over_text = game_over_font.render('Game Over', True, (255, 255, 255))
    game_over_rect = game_over_text.get_rect()
    game_over_rect.centerx = window.get_rect().centerx
    game_over_rect.centery = window.get_rect().centery
    window.blit(game_over_text, game_over_rect)
    pygame.display.update()
    pygame.time.delay(2000)
    sys.exit()

最后，我们可以在游戏主循环中实现游戏的逻辑。

def main():
    pygame.time.set_timer(USEREVENT + 1, 1000)
    pygame.time.set_timer(USEREVENT + 2, 1000)
    pygame.time.set_timer(USEREVENT + 3, 100)

    player = Plane('images/player.png', WINDOW_WIDTH // 2, WINDOW_HEIGHT - 120)
    player_group = pygame.sprite.Group(player)

    enemy_group = pygame.sprite.Group()

    score = 0
    score_font = pygame.font.SysFont(None, 32)

    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                sys.exit()
            elif event.type == USEREVENT + 1:
                enemy = Enemy('images/enemy.png', random.randint(0, WINDOW_WIDTH - 50), -50)
                enemy_group.add(enemy)
            elif event.type == USEREVENT + 2:
                enemy = Enemy('images/enemy2.png', random.randint(0, WINDOW_WIDTH - 80), -80)
                enemy_group.add(enemy)
            elif event.type == USEREVENT + 3:
                pygame.sprite.groupcollide(enemy_group, player.bullets, True, True)
                enemies = pygame.sprite.spritecollide(player, enemy_group, False)
                if enemies:
                    game_over()

        window.blit(background, (0, 0))

        player_group.update()
        player_group.draw(window)

        enemy_group.update()
        enemy_group.draw(window)

        score_text = score_font.render('Score: {}'.format(score), True, (255, 255, 255))
        window.blit(score_text, (10, 10))

        pygame.display.update()

        pressed_keys = pygame.key.get_pressed()

        if pressed_keys[K_LEFT]:
            player.move_left()
        elif pressed_keys[K_RIGHT]:
            player.move_right()
        elif pressed_keys[K_UP]:
            player.move_up()
        elif pressed_keys[K_DOWN]:
            player.move_down()
        elif pressed_keys[K_SPACE]:
            player.fire()

        score += len(pygame.sprite.groupcollide(player.bullets, enemy_group, True, True))

        if len(enemy_group) > 5:
            game_over()

        pygame.time.Clock().tick(FPS)


if __name__ == '__main__':
    main()

这样，一个简单的飞机大战游戏就完成了。你可以根据自己的喜好和需求对其进行修改和扩展。