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面是一份基础版的贪吃蛇代码,主要展示了游戏的基本逻辑,如界面绘制、蛇的移动、食物的产生等。
- import pygame
- import random
-
- # 初始化游戏
- pygame.init()
- width, height = 500, 500
- screen = pygame.display.set_mode((width, height))
- pygame.display.set_caption('贪吃蛇')
- clock = pygame.time.Clock()
-
- # 定义颜色
- white = (255, 255, 255)
- black = (0, 0, 0)
- green = (0, 255, 0)
- red = (255, 0, 0)
-
- # 定义蛇和食物
- block_size = 10
- snake_speed = 15
- font_style = pygame.font.SysFont(None, 30)
-
- def draw_snake(snake_list):
- for x,y in snake_list:
- pygame.draw.rect(screen, green, [x, y, block_size, block_size])
-
- def message(msg, color):
- message = font_style.render(msg, True, color)
- screen.blit(message, [width/6, height/3])
-
- def gameLoop():
- game_over = False
- game_close = False
-
- x1 = width / 2
- y1 = height / 2
-
- x1_change = 0
- y1_change = 0
-
- snake_List = []
- Length_of_snake = 1
-
- foodx = round(random.randrange(0, width - block_size) / 10.0) * 10.0
- foody = round(random.randrange(0, height - block_size) / 10.0) * 10.0
-
- # 游戏主循环
- while not game_over:
-
- while game_close == True:
- screen.fill(white)
- message("你输了!再玩一次按Q,退出按C", red)
- pygame.display.update()
-
- for event in pygame.event.get():
- if event.type == pygame.KEYDOWN:
- if event.key == pygame.K_q:
- gameLoop()
- elif event.key == pygame.K_c:
- game_over = True
- game_close = False
-
- # 监听事件
- for event in pygame.event.get():
- if event.type == pygame.QUIT:
- game_over = True
- if event.type == pygame.KEYDOWN:
- if event.key == pygame.K_LEFT:
- x1_change = -block_size
- y1_change = 0
- elif event.key == pygame.K_RIGHT:
- x1_change = block_size
- y1_change = 0
- elif event.key == pygame.K_UP:
- y1_change = -block_size
- x1_change = 0
- elif event.key == pygame.K_DOWN:
- y1_change = block_size
- x1_change = 0
-
- # 判断是否出界
- if x1 >= width or x1 < 0 or y1 >= height or y1 < 0:
- game_close = True
-
- # 更新蛇的坐标
- x1 += x1_change
- y1 += y1_change
-
- # 清空屏幕
- screen.fill(white)
-
- # 绘制食物和蛇
- pygame.draw.rect(screen, red, [foodx, foody, block_size, block_size])
- snake_Head = []
- snake_Head.append(x1)
- snake_Head.append(y1)
- snake_List.append(snake_Head)
-
- if len(snake_List) > Length_of_snake:
- del snake_List[0]
-
- for x in snake_List[:-1]:
- if x == snake_Head:
- game_close = True
-
- draw_snake(snake_List)
- pygame.display.update()
-
- # 判断蛇是否吃到食物
- if x1 == foodx and y1 == foody:
- foodx = round(random.randrange(0, width - block_size) / 10.0) * 10.0
- foody = round(random.randrange(0, height - block_size) / 10.0) * 10.0
- Length_of_snake += 1
-
- clock.tick(snake_speed)
-
- pygame.quit()
- quit()
-
- gameLoop()

代码主要分为三部分:初
始化游戏、游戏主循环和游戏结束处理。在游戏主循环中,首先检测用户的输入以改变蛇的运动方向,并根据蛇的坐标更新游戏界面。然后判断蛇是否撞墙或咬到自己以及是否吃到食物,以决定游戏是否结束或者蛇是否增长。最后,游戏结束时提供继续游戏和退出游戏的选项。
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