150行python代码实现贪吃蛇游戏

上篇博文我们实现了两百行代码实现贪吃蛇游戏,这次我们来实现一个代码量更加少,功能却更加完整的

python代码实现贪吃蛇游戏,具体代码与文件可以访问我的GitHub地址获取

游戏截图

动图

贪吃蛇python代码

"""贪吃蛇"""

import random

import sys

import time

import pygame

from pygame.locals import *

from collections import deque

SCREEN_WIDTH = 600 # 屏幕宽度

SCREEN_HEIGHT = 480 # 屏幕高度

SIZE = 20 # 小方格大小

LINE_WIDTH = 1 # 网格线宽度

# 游戏区域的坐标范围

SCOPE_X = (0, SCREEN_WIDTH // SIZE - 1)

SCOPE_Y = (2, SCREEN_HEIGHT // SIZE - 1)

# 食物的分值及颜色

FOOD_STYLE_LIST = [(10, (255, 100, 100)), (20, (100, 255, 100)), (30, (100, 100, 255))]

LIGHT = (100, 100, 100)

DARK = (200, 200, 200) # 蛇的颜色

BLACK = (0, 0, 0) # 网格线颜色

RED = (200, 30, 30) # 红色,GAME OVER 的字体颜色

BGCOLOR = (40, 40, 60) # 背景色

def print_text(screen, font, x, y, text, fcolor=(255, 255, 255)):

imgText = font.render(text, True, fcolor)

screen.blit(imgText, (x, y))

# 初始化蛇

def init_snake():

snake = deque()

snake.append((2, SCOPE_Y[0]))

snake.append((1, SCOPE_Y[0]))

snake.append((0, SCOPE_Y[0]))

return snake

def create_food(snake):

food_x = random.randint(SCOPE_X[0], SCOPE_X[1])

food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])

while (food_x, food_y) in snake:

# 如果食物出现在蛇身上,则重来

food_x = random.randint(SCOPE_X[0], SCOPE_X[1])

food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])

return food_x, food_y

def get_food_style():

return FOOD_STYLE_LIST[random.randint(0, 2)]

def main():

pygame.init()

screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

pygame.display.set_caption('贪吃蛇')

font1 = pygame.font.SysFont('SimHei', 24) # 得分的字体

font2 = pygame.font.Font(None, 72) # GAME OVER 的字体

fwidth, fheight = font2.size('GAME OVER')

# 如果蛇正在向右移动,那么快速点击向下向左,由于程序刷新没那么快,向下事件会被向左覆盖掉,导致蛇后退,直接GAME OVER

# b 变量就是用于防止这种情况的发生

b = True

# 蛇

snake = init_snake()

# 食物

food = create_food(snake)

food_style = get_food_style()

# 方向

pos = (1, 0)

game_over = True

start = False # 是否开始,当start = True,game_over = True 时,才显示 GAME OVER

score = 0 # 得分

orispeed = 0.5 # 原始速度

speed = orispeed

last_move_time = None

pause = False # 暂停

while True:

for event in pygame.event.get():

if event.type == QUIT:

sys.exit()

elif event.type == KEYDOWN:

if event.key == K_RETURN:

if game_over:

start = True

game_over = False

b = True

snake = init_snake()

food = create_food(snake)

food_style = get_food_style()

pos = (1, 0)

# 得分

score = 0

last_move_time = time.time()

elif event.key == K_SPACE:

if not game_over:

pause = not pause

elif event.key in (K_w, K_UP):

# 这个判断是为了防止蛇向上移时按了向下键,导致直接 GAME OVER

if b and not pos[1]:

pos = (0, -1)

b = False

elif event.key in (K_s, K_DOWN):

if b and not pos[1]:

pos = (0, 1)

b = False

elif event.key in (K_a, K_LEFT):

if b and not pos[0]:

pos = (-1, 0)

b = False

elif event.key in (K_d, K_RIGHT):

if b and not pos[0]:

pos = (1, 0)

b = False

# 填充背景色

screen.fill(BGCOLOR)

# 画网格线 竖线

for x in range(SIZE, SCREEN_WIDTH, SIZE):

pygame.draw.line(screen, BLACK, (x, SCOPE_Y[0] * SIZE), (x, SCREEN_HEIGHT), LINE_WIDTH)

# 画网格线 横线

for y in range(SCOPE_Y[0] * SIZE, SCREEN_HEIGHT, SIZE):

pygame.draw.line(screen, BLACK, (0, y), (SCREEN_WIDTH, y), LINE_WIDTH)

if not game_over:

curTime = time.time()

if curTime - last_move_time > speed:

if not pause:

b = True

last_move_time = curTime

next_s = (snake[0][0] + pos[0], snake[0][1] + pos[1])

if next_s == food:

# 吃到了食物

snake.appendleft(next_s)

score += food_style[0]

speed = orispeed - 0.03 * (score // 100)

food = create_food(snake)

food_style = get_food_style()

else:

if SCOPE_X[0] <= next_s[0] <= SCOPE_X[1] and SCOPE_Y[0] <= next_s[1] <= SCOPE_Y[1] \

and next_s not in snake:

snake.appendleft(next_s)

snake.pop()

else:

game_over = True

# 画食物

if not game_over:

# 避免 GAME OVER 的时候把 GAME OVER 的字给遮住了

pygame.draw.rect(screen, food_style[1], (food[0] * SIZE, food[1] * SIZE, SIZE, SIZE), 0)

# 画蛇

for s in snake:

pygame.draw.rect(screen, DARK, (s[0] * SIZE + LINE_WIDTH, s[1] * SIZE + LINE_WIDTH,

SIZE - LINE_WIDTH * 2, SIZE - LINE_WIDTH * 2), 0)

print_text(screen, font1, 30, 7, f'速度: {score//100}')

print_text(screen, font1, 450, 7, f'得分: {score}')

if game_over:

if start:

print_text(screen, font2, (SCREEN_WIDTH - fwidth) // 2, (SCREEN_HEIGHT - fheight) // 2, 'GAME OVER', RED)

pygame.display.update()

if __name__ == '__main__':

main()

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