import sys
import time
import pygame
from random import *
# Position 类，通过其构造函数，设置 x 和 y
class Position(object):
def __init__(self, x, y):
self.x = x
self.y = y
# 生成随机的食物
def new_food(head):
while True:
new_food = Position(randint(0, 48) * 20, randint(0, 29) * 20)
# 判断新生成的事物是否和贪吃蛇蛇头重合，重合则不创键
if new_food.x != head.x and new_food.y != head.y:
break
else:
continue
return new_food
# 绘制，在窗体中绘制贪吃蛇、食物
# color: 颜色， position: 坐标
def rect(color, position):
pygame.draw.circle(window, color, (position.x, position.y), 10)
# 初始界面和游戏中点差退出游戏时
def exit_end():
pygame.quit()
quit()
# 游戏结束时，显示得分的窗体的设置
def show_end():
# 设计窗口
# 定义窗口大小
small_window = pygame.display.set_mode((960, 600))
init_background = pygame.image.load("image/init_bgimg.jpg")
small_window.blit(init_background, (0, 0))
# 定义标题
pygame.display.set_caption(" 贪吃蛇大冒险 ")
# 定义背景图片
font = pygame.font.SysFont("simHei", 40)
fontsurf = font.render(' 游戏结束 ! 你的得分为 : %s' % score, False, black)
small_window.blit(fontsurf, (250, 200))
pygame.display.update()
time.sleep(2)
pygame.quit()
sys.exit()
# 正常模式死亡设置
# head: 蛇头， snake_body: 蛇身
def die_snake(head, snake_body):
# 定义标志物，默认为 false ， true 时判定贪吃蛇碰到自己，死亡
die_flag = False
# 遍历存放贪吃蛇位姿的列表，从第 1 个开始， ( 第 0 个位蛇头 )
for body in snake_body[1:]:
# 如果蛇头的 xy 和蛇身 xy 相等，则判定相撞，设置 flag 为 ture
if head.x == body.x and head.y == body.y:
die_flag = True
# 若蛇头的 xy 在显示窗体外，或 flag 为 true ，则显示结束界面，并退出游戏
if head.x < 0 or head.x > 960 or head.y < 0 or head.y > 600 or die_flag:
pygame.mixer.music.stop()
show_end()
# 正常模式主体设置
def start_game():
# 定义存分数的全局变量
global score
global color
color = (randint(10, 255), randint(10, 255), randint(10, 255))
# 定义存放玩家键盘输入运动方向的变量，初始为向右
run_direction = "right"
# 定义贪吃蛇运动方向的变量，初始为玩家键入方向
run = run_direction
# 实例化蛇头、蛇身、食物对象
head = Position(160, 160)
# 初始化蛇身长度为 3 个单位
snake_body = [Position(head.x, head.y + 20), Position(head.x, head.y + 40), Position(head.x, head.y + 60)]
# 初始化食物位置
food = Position(300, 300)
# 死循环
while True:
window.blit(background, (0,0))
# 监听玩家键盘输入的运动方向值，并根据输入转为 up 、 down 、 right 或 left ，方便程序中调用
for event in pygame.event.get():
if event.type == pygame.QUIT:
show_end()
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP:
run_direction = "up"
elif event.key == pygame.K_RIGHT:
run_direction = "right"
elif event.key == pygame.K_LEFT:
run_direction = "left"
elif event.key == pygame.K_DOWN:
run_direction = "down"
# 食物
rect(color, food)
# 蛇头
rect(black, head)
# 蛇身
for pos in snake_body:
rect(white, pos)
# 判断贪吃蛇原运动方向与玩家键盘输入的运动方向是否违反正常运动情况
if run == "up" and not run_direction == "down":
run = run_direction
elif run == "down" and not run_direction == "up":
run = run_direction
elif run == "left" and not run_direction == "right":
run = run_direction
elif run == "right" and not run_direction == "left":
run = run_direction
# 插入蛇头位置到蛇身列表中
snake_body.insert(0, Position(head.x, head.y))
# 根据玩家键入方向进行蛇头 xy 的更新
if run == "up":
head.y -= 20
elif run == "down":
head.y += 20
elif run == "left":
head.x -= 20
elif run == "right":
head.x += 20
# 判断是否死亡
die_snake(head, snake_body)
# 判断蛇头和食物坐标，若相等，则加分，并生成新的食物
if head.x == food.x and head.y == food.y:
score += 1
food = new_food(head)
color = (randint(10, 255), randint(10, 255), randint(10, 255))
else:
snake_body.pop()
font = pygame.font.SysFont("simHei", 25)
mode_title = font.render(' 正常模式 ', False, grey)
socre_title = font.render(' 得分 : %s' % score, False, grey)
window.blit(mode_title, (50, 30))
window.blit(socre_title, (50, 65))
# 绘制更新
pygame.display.update()
# 通过帧率设置贪吃蛇速度
clock.tick(8)
# 可穿墙模式死亡设置
# head: 蛇头， snake_body: 蛇身
def through_snake(head, snake_body):
# 定义标志位
die_flag = False
# 遍历，蛇头碰到蛇身时， flag 为 true 退出游戏
for body in snake_body[1:]:
if head.x == body.x and head.y == body.y:
die_flag = True
if die_flag:
pygame.mixer.music.stop()
show_end()
else: # 当蛇头的 xy 出窗体时
# 四种穿墙情况，分别设置
if head.x < 0:
head.x = 960
if head.x > 960:
head.x = 0
if head.y < 0:
head.y = 600
if head.y > 600:
head.y = 0
# 穿墙模式主体设置
def start_kgame():
global score
global color
color = (randint(10, 255), randint(10, 255), randint(10, 255))
# 定义蛇初始方向
run_direction = "up"
run = run_direction
# 实例化蛇头、蛇身、食物对象
head = Position(160, 160)
# 三格
snake_body = [Position(head.x, head.y + 20), Position(head.x, head.y + 40), Position(head.x, head.y + 60)]
# 初始化事物位置
food = Position(300, 300)
# 死循环，监听键盘键值
while True:
window.blit(background, (0, 0))
for event in pygame.event.get():
if event.type == pygame.QUIT:
show_end()
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP:
run_direction = "up"
elif event.key == pygame.K_RIGHT:
run_direction = "right"
elif event.key == pygame.K_LEFT:
run_direction = "left"
elif event.key == pygame.K_DOWN:
run_direction = "down"
# 食物
rect(color, food)
# 蛇头
rect(black, head)
# 蛇身
for pos in snake_body:
rect(white, pos)
# 判断贪吃蛇原运动方向与玩家键盘输入的运动方向是否违反正常运动情况
if run == "up" and not run_direction == "down": # 若运动方向为向上，玩家输入运动方向向下，则违背贪吃蛇正常运动情况
run = 外汇跟单gendan5.comrun_direction
elif run == "down" and not run_direction == "up":
run = run_direction
elif run == "left" and not run_direction == "right":
run = run_direction
elif run == "right" and not run_direction == "left":
run = run_direction
# 插入蛇头位置到蛇身列表中
snake_body.insert(0, Position(head.x, head.y))
# 根据玩家键入方向进行蛇头 xy 的更新
if run == "up":
head.y -= 20
elif run == "down":
head.y += 20
elif run == "left":
head.x -= 20
elif run == "right":
head.x += 20
# 穿墙实现
through_snake(head, snake_body)
# 判断是否加分和随机生成新的食物
if head.x == food.x and head.y == food.y:
score += 1
food = new_food(head)
color = (randint(10, 255), randint(10, 255), randint(10, 255))
else:
snake_body.pop()
font = pygame.font.SysFont("simHei", 25)
mode_title = font.render(' 穿墙模式 ', False, grey)
socre_title = font.render(' 得分 : %s' % score, False, grey)
window.blit(mode_title, (50, 30))
window.blit(socre_title, (50, 65))
# 绘制更新
pygame.display.update()
# 通过帧率设置贪吃蛇速度
clock.tick(8)
# 监听函数，监听键盘输入
# msg: 按钮信息， x: 按钮的 x 轴， y: 按钮的 y 轴， w: 按钮的宽， h: 按钮的高， ic: 按钮初始颜色， ac: 按钮按下颜色， action: 按钮按下的动作
def button(msg, x, y, w, h, ic, ac, action=None):
# 获取鼠标位置
mouse = pygame.mouse.get_pos()
# 获取键盘输入
click = pygame.mouse.get_pressed()
if x + w > mouse[0] > x and y + h > mouse[1] > y:
pygame.draw.rect(window, ac, (x, y, w, h))
if click[0] == 1 and action != None:
action()
else:
pygame.draw.rect(window, ic, (x, y, w, h))
# 设置按钮中的文字样式和居中对齐
font = pygame.font.SysFont('simHei', 20)
smallfont = font.render(msg, True, white)
smallrect = smallfont.get_rect()
smallrect.center = ((x + (w / 2)), (y + (h / 2)))
window.blit(smallfont, smallrect)
# 游戏初始界面，选择模式
def into_game():
into = True
while into:
window.blit(init_background, (0, 0))
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_end()
# 设置字体
font = pygame.font.SysFont("simHei", 50)
# 初始界面显示文字
fontsurf = font.render(' 欢迎来到贪吃蛇大冒险 !', True, black) # 文字
fontrect = fontsurf.get_rect()
fontrect.center = ((width / 2), 200)
window.blit(fontsurf, fontrect)
button(" 正常模式 ", 370, 370, 200, 40, blue, brightred, start_game)
button(" 可穿墙模式 ", 370, 420, 200, 40, violte, brightred, start_kgame)
button(" 退出 ", 370, 470, 200, 40, red,brightred, exit_end)
pygame.display.update()
clock.tick(15)