Python贪吃蛇游戏代码示例 - 从零实现经典游戏

想学习如何使用Python编写游戏吗？这篇文章提供了一个简单的贪吃蛇游戏代码示例，带你体验用代码实现经典游戏的乐趣。

代码实现

本示例使用 pygame 库来处理图形界面和用户输入。如果你还没有安装 pygame，可以使用 pip install pygame 命令进行安装。pythonimport pygameimport random

游戏窗口的宽度和高度WINDOW_WIDTH = 400WINDOW_HEIGHT = 400

蛇身方块的大小和初始长度BLOCK_SIZE = 20INITIAL_LENGTH = 4

颜色定义BLACK = (0, 0, 0)WHITE = (255, 255, 255)GREEN = (0, 255, 0)RED = (255, 0, 0)

初始化pygamepygame.init()

创建游戏窗口window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))pygame.display.set_caption('贪吃蛇游戏')

clock = pygame.time.Clock()

class Snake: def init(self): self.length = INITIAL_LENGTH self.positions = [] self.direction = 'right'

    # 初始化蛇身位置        for i in range(self.length, 0, -1):            self.positions.append((i * BLOCK_SIZE, 0))

def move(self):        head_x, head_y = self.positions[0]        if self.direction == 'up':            new_head = (head_x, head_y - BLOCK_SIZE)        elif self.direction == 'down':            new_head = (head_x, head_y + BLOCK_SIZE)        elif self.direction == 'left':            new_head = (head_x - BLOCK_SIZE, head_y)        else:            new_head = (head_x + BLOCK_SIZE, head_y)

    self.positions.insert(0, new_head)        if len(self.positions) > self.length:            self.positions.pop()

def change_direction(self, new_direction):        if new_direction == 'up' and self.direction != 'down':            self.direction = new_direction        elif new_direction == 'down' and self.direction != 'up':            self.direction = new_direction        elif new_direction == 'left' and self.direction != 'right':            self.direction = new_direction        elif new_direction == 'right' and self.direction != 'left':            self.direction = new_direction

def draw(self):        for position in self.positions:            pygame.draw.rect(window, GREEN, (position[0], position[1], BLOCK_SIZE, BLOCK_SIZE))

class Food: def init(self): self.position = (0, 0) self.spawn_food()

def spawn_food(self):        x = random.randint(0, WINDOW_WIDTH // BLOCK_SIZE - 1) * BLOCK_SIZE        y = random.randint(0, WINDOW_HEIGHT // BLOCK_SIZE - 1) * BLOCK_SIZE        self.position = (x, y)

def draw(self):        pygame.draw.rect(window, RED, (self.position[0], self.position[1], BLOCK_SIZE, BLOCK_SIZE))

snake = Snake()food = Food()

running = Truewhile running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False elif event.type == pygame.KEYDOWN: if event.key == pygame.K_UP: snake.change_direction('up') elif event.key == pygame.K_DOWN: snake.change_direction('down') elif event.key == pygame.K_LEFT: snake.change_direction('left') elif event.key == pygame.K_RIGHT: snake.change_direction('right')

snake.move()

if snake.positions[0] == food.position:        snake.length += 1        food.spawn_food()

if (snake.positions[0][0] < 0 or snake.positions[0][0] >= WINDOW_WIDTH or            snake.positions[0][1] < 0 or snake.positions[0][1] >= WINDOW_HEIGHT or            snake.positions[0] in snake.positions[1:]):        running = False

window.fill(BLACK)    snake.draw()    food.draw()    pygame.display.update()

clock.tick(10)

pygame.quit()

代码说明

初始化: 设置游戏窗口大小、颜色、蛇的初始状态以及食物的生成。2. 游戏循环: 不断监听用户输入，控制蛇的移动，判断是否吃到食物，以及判断游戏是否结束。3. 蛇的移动: 根据用户输入的方向更新蛇头的位置，并判断是否撞到边界或自身。4. 食物: 随机生成食物的位置，并在蛇吃到食物后重新生成。5. 游戏结束: 当蛇撞到边界或自身时游戏结束。

总结

这只是一个简单的贪吃蛇游戏示例，你可以尝试添加更多功能，例如计分、难度等级、游戏音效等，让游戏更加有趣。