猫史档案馆

【作品展示】

 

【作品介绍】

贪吃蛇

 

【作品源代码】

import pygame
import random
import sys

from pygame.locals import *


snake_speed = 10
windows_width = 1000
windows_height = 1000
cell_size = 20

#初始化区

map_width = int(windows_width/cell_size)
map_height = int(windows_height/cell_size)

#颜色定义
white = (255, 255, 255)
black = (0, 0, 0)
gray = (230, 230, 230)
dark_grey = (40, 40, 40)
DARKGreen = (0, 155, 0)
Green = (0, 255, 0)
Red = (255, 0, 0)
blue = (0, 0, 255)
dark_blue = (0, 0, 139)


BG_COLOR = black

#定义方向
UP = 1
DOWN = 2
LEFT = 3
RIGHT = 4

HEAD = 0  # 贪吃蛇头部下标


def main():
    pygame.init()  # 初始化模块
    snake_speed_clock = pygame.time.Clock()  # 创建python的时钟对象
    screen = pygame.display.set_mode((windows_width, windows_height))  #
    screen.fill(white)

    pygame.display.set_caption("贪吃蛇")  # 设置标题
    show_start_info(screen)
    while True:
        running_game(screen, snake_speed_clock)
        show_gameover_info(screen)


#运行游戏主题
def running_game(screen, snake_speed_clock):
    startx = random.randint(3, map_width-8)  # 开始位置
    starty = random.randint(3, map_height - 8)
    snake_coords = [{'x': startx, 'y': starty},  # 初始位置
                    {'x': startx-1, 'y': starty},
                    {'x': startx-2, 'y': starty}]

    direction = RIGHT  # 开始时向右移动

    food = get_random_location()  # 食物随机位置

    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                terminate()
            elif event.type == KEYDOWN:
                if(event.key == K_LEFT or event.key == K_a) and direction != RIGHT:
                    direction = LEFT
                elif(event.key == K_RIGHT or event.key == K_d) and direction != LEFT:
                    direction = RIGHT
                elif(event.key == K_UP or event.key == K_w) and direction != DOWN:
                    direction = UP
                elif(event.key == K_DOWN or event.key == K_s) and direction != UP:
                    direction = DOWN
                elif event.key == K_ESCAPE:
                    terminate()
        move_snake(direction, snake_coords)  # 移动蛇

        ret = snake_is_alive(snake_coords)
        if not ret:
            break  # 游戏结束
        snake_is_eat_food(snake_coords, food)  # 判断蛇是否吃到食物

        screen.fill(BG_COLOR)
        draw_grid(screen)
        draw_snake(screen, snake_coords)
        draw_food(screen, food)
        draw_score(screen, len(snake_coords)-3)
        pygame.display.update()
        snake_speed_clock.tick(snake_speed)  # 控制fps

#将食物画出来


def draw_food(screen, food):
    x = food['x']*cell_size
    y = food['y']*cell_size
    appleRect = pygame.Rect(x, y, cell_size, cell_size)
    pygame.draw.rect(screen, Red, appleRect)
    return
#将贪吃蛇画出来


def draw_snake(screen, snake_coords):
    for coord in snake_coords:
        x = coord['x']*cell_size
        y = coord['y']*cell_size
        wormSegmentRect = pygame.Rect(x, y, cell_size, cell_size)
        pygame.draw.rect(screen, dark_blue, wormSegmentRect)
        wormInnerSegmentRect = pygame.Rect(
            x+4, y+4, cell_size-8, cell_size-8)
        pygame.draw.rect(screen, blue, wormInnerSegmentRect)
    return
#画网格


def draw_grid(screen):
    for x in range(0, windows_width, cell_size):
        pygame.draw.line(screen, dark_grey, (x, 0), (x, windows_height))
    for y in range(0, windows_height, cell_size):
        pygame.draw.line(screen, dark_grey, (0, y), (windows_width, y))
#移动贪吃蛇


def move_snake(direction, snake_coords):
    if direction == UP:
        newHead = {'x': snake_coords[HEAD]['x'],
                   'y': snake_coords[HEAD]['y']-1}
    elif direction == DOWN:
        newHead = {'x': snake_coords[HEAD]['x'],
                   'y': snake_coords[HEAD]['y']+1}
    elif direction == LEFT:
        newHead = {'x': snake_coords[HEAD]['x'] -
                   1, 'y': snake_coords[HEAD]['y']}
    elif direction == RIGHT:
        newHead = {'x': snake_coords[HEAD]['x'] +
                   1, 'y': snake_coords[HEAD]['y']}

    snake_coords.insert(0, newHead)
    return
#判断蛇喵了没


def snake_is_alive(snake_coords):
    tag = True
    if snake_coords[HEAD]['x'] == -1 or snake_coords[HEAD]['x'] == map_width or snake_coords[HEAD]['y'] == -1 or \
            snake_coords[HEAD]['y'] == map_height:
        tag = False
    for snake_body in snake_coords[1:]:
        if snake_body['x'] == snake_coords[HEAD]['x'] and snake_body['y'] == snake_coords[HEAD]['y']:
            tag = False
    return tag

#判断蛇是否吃到食物


def snake_is_eat_food(snake_coords, food):
    if snake_coords[HEAD]['x'] == food['x'] and snake_coords[HEAD]['y'] == food['y']:
        food['x'] = random.randint(0, map_width-1)
        food['y'] = random.randint(0, map_height-1)  # 食物重新设置
    else:
        del snake_coords[-1]  # 如果没有吃到食物，就向前移动，尾部的一个删掉

#食物随机生成


def get_random_location():
    return{'x': random.randint(0, map_width-1), 'y': random.randint(0, map_height-1)}
#开始信息显示


def show_start_info(screen):
    font = pygame.font.Font('C:/Users/kim/Desktop/timesbd.ttf', 40)
    tip = font.render('按任意键开始游戏~~~', True, (65, 105, 225))
    gamestart = pygame.image.load('gamestart.png')
    screen.blit(gamestart, (140, 30))
    screen.blit(tip, (240, 550))
    pygame.display.update()
    return
    while True:  # 键盘监听时间
        for event in pygame.event.get():
            if event.type == QUIT:
                terminate()  # 终止程序
            elif event.type == KEYDOWN:
                if(event.key == K_ESCAPE):  # 终止程序
                    terminate()
                else:
                    return


#游戏结束信息显示
def show_gameover_info(screen):
    font = pygame.font.Font('C:/Users/kim/Desktop/timesbd.ttf', 40)
    tip = font.render('按Q或ESC退出游戏，按任意键重新开始游戏~', True, (65, 105, 225))
    gamestart = pygame.image.load('1.png')
    screen.blit(gamestart, (60, 0))
    screen.blit(tip, (80, 300))
    pygame.display.update()

    while True:  # 键盘监听时间
        for event in pygame.event.get():
            if event.type == QUIT:
                terminate()  # 终止程序
            elif event.type == KEYDOWN:
                if event.key == K_ESCAPE or event.key == K_q:  # 终止程序
                    terminate()
                else:
                    return  # 结束此函数，开始游戏
#画成绩


def draw_score(screen, score):
    font = pygame.font.Font('C:/Users/kim/Desktop/timesbd.ttf', 30)
    scoresSurf = font.render('得分：%s' % score, True, Green)
    socreRect = scoresSurf.get_rect()
    socreRect.topleft = (windows_width-120, 10)
    screen.blit(scoresSurf, socreRect)
#程序终止


def terminate():
    pygame.quit()
    sys.exit()


main()

 

【提示】

部分含有Python第三方库相关内容的作品，在海龟编辑器网页端无法运行哦！如遇到这种情况，可以打开下面的链接，下载海龟编辑器客户端：

https://python.codemao.cn