python-pygame-贪吃蛇小游戏

#导入相关模块 import random import pygame import sys from pygame.locals import * snake_speed = 10 #贪吃蛇的速度 windows_width = 800 windows_height = 600 #游戏窗口的大小 cell_size = 20 #贪吃蛇身体方块大小,注意身体大小必须能被窗口长宽整除 #定义地图大小 map_width = int(windows_width / cell_size) map_height = int(windows_height / cell_size) # 颜色定义 c = (0x87,0x64,0xB8) white = (255, 255, 255) black = (0, 0, 0) gray = (230, 230, 230) dark_gray = (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 = c #游戏背景颜色 # 定义方向 UP = 1 DOWN = 2 LEFT = 3 RIGHT = 4 HEAD = 0 #贪吃蛇头部下标 file=r'bgm.mp3' # 音乐的路径 pygame.mixer.init() # 初始化 track = pygame.mixer.music.load(file)# 加载音乐文件 pygame.mixer.music.play(-1) #主函数 def main(): pygame.init() # 模块初始化 snake_speed_clock = pygame.time.Clock() # 创建Pygame时钟对象 screen = pygame.display.set_mode((windows_width, windows_height)) # screen.fill(white) pygame.display.set_caption("Python 贪吃蛇小游戏") #设置标题 show_start_info(screen) #欢迎信息 while True: running_game(screen, snake_speed_clock) show_gameover_info(screen) #游戏运行主体 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}, #初始贪吃蛇 {'x': startx - 1, 'y': starty}, {'x': startx - 2, 'y': starty}] direction = RIGHT # 开始时向右移动 food = get_random_location() #实物随机位置 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 #蛇跪了. 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) #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( #蛇身子里面的第二层亮绿色 x + 4, y + 4, cell_size - 8, cell_size - 8) pygame.draw.rect(screen, blue, wormInnerSegmentRect) #画网格(可选) def draw_grid(screen): for x in range(0, windows_width, cell_size): # draw 水平 lines pygame.draw.line(screen, dark_gray, (x, 0), (x, windows_height)) for y in range(0, windows_height, cell_size): # draw 垂直 lines pygame.draw.line(screen, dark_gray, (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) #判断蛇死了没 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 # 蛇碰壁啦 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 # 蛇碰到自己身体啦 return tag #判断贪吃蛇是否吃到食物 def snake_is_eat_food(snake_coords, food): #如果是列表或字典，那么函数内修改参数内容，就会影响到函数体外的对象。 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) # 实物位置重新设置 else: del snake_coords[-1] # 如果没有吃到实物, 就向前移动, 那么尾部一格删掉 #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('myfont.ttf', 40) tip = font.render('按任意键开始游戏~~~', True, (65, 105, 225)) gamestart = pygame.image.load('OIP.jpg') screen.blit(gamestart, (140, 100)) screen.blit(tip, (240, 550)) pygame.display.update() while True: #键盘监听事件 for event in pygame.event.get(): # event handling loop if event.type == QUIT: terminate() #终止程序 elif event.type == KEYDOWN: if (event.key == K_ESCAPE): #终止程序 terminate() #终止程序 else: return #结束此函数, 开始游戏 #游戏结束信息显示 def show_gameover_info(screen): font = pygame.font.Font('myfont.ttf', 40) tip = font.render('按Q或者ESC退出游戏, 按任意键重新开始游戏~', True, (65, 105, 225)) gamestart = pygame.image.load('gameover.png') screen.blit(gamestart, (60, 0)) screen.blit(tip, (80, 300)) pygame.display.update() while True: #键盘监听事件 for event in pygame.event.get(): # event handling loop 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() #终止程序 else: return #结束此函数, 重新开始游戏 #画成绩 def draw_score(screen,score): font = pygame.font.Font('myfont.ttf', 30) scoreSurf = font.render('得分: %s' % score, True, Green) scoreRect = scoreSurf.get_rect() scoreRect.topleft = (windows_width - 120, 10) screen.blit(scoreSurf, scoreRect) #程序终止 def terminate(): pygame.quit() sys.exit() main()