使用python写一个飞机小游戏实例

好的，以下是一个简单的飞机小游戏实例的 Python 代码：

import pygame
import random

pygame.init()

# Set up the display
screen_width = 480
screen_height = 700
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption('Aircraft War')

# Load images
background_img = pygame.image.load('images/background.png')
aircraft_img = pygame.image.load('images/aircraft.png')
bullet_img = pygame.image.load('images/bullet.png')
enemy_small_img = pygame.image.load('images/enemy_small.png')
enemy_middle_img = pygame.image.load('images/enemy_middle.png')
enemy_big_img = pygame.image.load('images/enemy_big.png')

# Load sounds
bullet_sound = pygame.mixer.Sound('sounds/bullet.wav')
enemy_destroyed_sound = pygame.mixer.Sound('sounds/enemy_destroyed.wav')

# Define colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)

# Define the aircraft
class Aircraft(pygame.sprite.Sprite):
    def __init__(self):
        super(Aircraft, self).__init__()
        self.image = aircraft_img
        self.rect = self.image.get_rect()
        self.rect.centerx = screen_width/2
        self.rect.bottom = screen_height - 10
        self.speed = 5

    def move_left(self):
        self.rect.x -= self.speed
        if self.rect.x < 0:
            self.rect.x = 0

    def move_right(self):
        self.rect.x += self.speed
        if self.rect.right > screen_width:
            self.rect.right = screen_width

    def move_up(self):
        self.rect.y -= self.speed
        if self.rect.y < 0:
            self.rect.y = 0

    def move_down(self):
        self.rect.y += self.speed
        if self.rect.bottom > screen_height:
            self.rect.bottom = screen_height

    def fire_bullet(self):
        bullet = Bullet(self.rect.centerx, self.rect.top)
        all_sprites_list.add(bullet)
        bullet_list.add(bullet)
        bullet_sound.play()

# Define the bullet
class Bullet(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super(Bullet, self).__init__()
        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.y += self.speed
        if self.rect.bottom < 0:
            self.kill()

# Define the enemy
class Enemy(pygame.sprite.Sprite):
    def __init__(self, img, speed):
        super(Enemy, self).__init__()
        self.image = img
        self.rect = self.image.get_rect()
        self.rect.x = random.randrange(0, screen_width - self.rect.width)
        self.rect.y = random.randrange(-100, -40)
        self.speed = speed

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

# Set up groups
all_sprites_list = pygame.sprite.Group()
enemy_list = pygame.sprite.Group()
bullet_list = pygame.sprite.Group()

# Set up the aircraft
aircraft = Aircraft()
all_sprites_list.add(aircraft)

# Set up the enemies
for i in range(8):
    enemy = Enemy(enemy_small_img, random.randrange(1, 4))
    all_sprites_list.add(enemy)
    enemy_list.add(enemy)

# Set up the clock
clock = pygame.time.Clock()

# Set up the score
font = pygame.font.SysFont(None, 25)
score = 0

# Game loop
game_over = False
while not game_over:
    # Handle events
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                aircraft.move_left()
            elif event.key == pygame.K_RIGHT:
                aircraft.move_right()
            elif event.key == pygame.K_UP:
                aircraft.move_up()
            elif event.key == pygame.K_DOWN:
                aircraft.move_down()
            elif event.key == pygame.K_SPACE:
                aircraft.fire_bullet()

    # Update the game
    all_sprites_list.update()

    # Check for collisions between the aircraft and enemies
    enemy_hit_list = pygame.sprite.spritecollide(aircraft, enemy_list, True)
    for enemy in enemy_hit_list:
        enemy_destroyed_sound.play()

    # Check for collisions between the bullets and enemies
    for bullet in bullet_list:
        enemy_hit_list = pygame.sprite.spritecollide(bullet, enemy_list, True)
        for enemy in enemy_hit_list:
            enemy_destroyed_sound.play()
            score += 1
            bullet.kill()

    # Add new enemies
    while len(enemy_list) < 8:
        enemy = Enemy(random.choice([enemy_small_img, enemy_middle_img, enemy_big_img]), random.randrange(1, 4))
        all_sprites_list.add(enemy)
        enemy_list.add(enemy)

    # Draw the game
    screen.blit(background_img, (0, 0))
    all_sprites_list.draw(screen)
    score_text = font.render('Score: {}'.format(score), True, WHITE)
    screen.blit(score_text, (10, 10))

    # Update the display
    pygame.display.update()

    # Set the frame rate
    clock.tick(60)

# Quit the game
pygame.quit()

请注意，此程序的图像和声音文件必须存在于程序目录中。