贪吃蛇

import pygame
import random

初始化 Pygame

pygame.init()

游戏窗口设置

WIDTH, HEIGHT = 600, 400
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("贪吃蛇游戏")
clock = pygame.time.Clock()

颜色定义

BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)

基础参数

CELL_SIZE = 20 # 蛇身、食物的尺寸
snake = [(WIDTH//2, HEIGHT//2)] # 蛇初始位置（列表存坐标，首元素为蛇头）
direction = (0, 0) # 初始静止，(dx, dy) 控制移动方向
food = (
random.randint(0, (WIDTH - CELL_SIZE) // CELL_SIZE) * CELL_SIZE,
random.randint(0, (HEIGHT - CELL_SIZE) // CELL_SIZE) * CELL_SIZE
) # 随机生成食物位置
score = 0
game_over = False

游戏主循环

while not game_over:
# 1. 事件处理（退出、按键控制）
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = True
elif event.type == pygame.KEYDOWN:
# 防止 180° 调头（比如向上时不能直接向下）
if event.key == pygame.K_UP and direction != (0, CELL_SIZE):
direction = (0, -CELL_SIZE)
elif event.key == pygame.K_DOWN and direction != (0, -CELL_SIZE):
direction = (0, CELL_SIZE)
elif event.key == pygame.K_LEFT and direction != (CELL_SIZE, 0):
direction = (-CELL_SIZE, 0)
elif event.key == pygame.K_RIGHT and direction != (-CELL_SIZE, 0):
direction = (CELL_SIZE, 0)

# 2. 蛇移动逻辑（方向非静止时更新）
if direction != (0, 0):
    head_x, head_y = snake[0]
    new_head = (head_x + direction[0], head_y + direction[1])
    snake.insert(0, new_head)  # 头部新增位置

    # 3. 碰撞检测（边界、自身）
    if (
        new_head[0] < 0
        or new_head[0] >= WIDTH
        or new_head[1] < 0
        or new_head[1] >= HEIGHT
        or new_head in snake[1:]  # 蛇头与身体其他部分碰撞
    ):
        game_over = True
    else:
        # 4. 吃食物判断
        if new_head == food:
            score += 10  # 加分
            # 生成新食物（避开蛇身）
            while True:
                food = (
                    random.randint(0, (WIDTH - CELL_SIZE) // CELL_SIZE) * CELL_SIZE,
                    random.randint(0, (HEIGHT - CELL_SIZE) // CELL_SIZE) * CELL_SIZE
                )
                if food not in snake:
                    break
        else:
            snake.pop()  # 没吃到食物，尾部移除（保持长度）

# 5. 画面渲染
screen.fill(BLACK)  # 填充背景

# 绘制食物
pygame.draw.rect(screen, RED, (*food, CELL_SIZE, CELL_SIZE))
# 绘制蛇身
for segment in snake:
    pygame.draw.rect(screen, GREEN, (*segment, CELL_SIZE, CELL_SIZE))

# 显示分数
font = pygame.font.SysFont("simhei", 24)
score_text = font.render(f"分数: {score}", True, WHITE)
screen.blit(score_text, (10, 10))

pygame.display.update()  # 更新画面
clock.tick(10)  # 控制帧率（数值越大速度越快）

游戏结束，退出 Pygame

pygame.quit()