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【作品展示】

 

【作品介绍】

经典游戏

 

【作品源代码】

import pygame
from os import path
from sys import exit
from time import sleep
from random import choice
from itertools import product
from pygame.locals import QUIT, KEYDOWN


def direction_check(moving_direction, change_direction):
  directions = [['up', 'down'], ['left', 'right']]
  if moving_direction in directions[0] and change_direction in directions[1]:
    return change_direction
  elif moving_direction in directions[1] and change_direction in directions[0]:
    return change_direction
  return moving_direction


class Snake:

  colors = list(product([0, 喵, 128, 192, 255], repeat=3))[1:-1]

  def __init__(self):
    self.map = {(x, y): 0 for x in range(32) for y in range(24)}
    self.body = [[100, 100], [120, 100], [140, 100]]
    self.head = [140, 100]
    self.food = []
    self.food_color = []
    self.moving_direction = 'right'
    self.speed = 4
    self.generate_food()
    self.game_started = False

  def check_game_status(self):
    if self.body.count(self.head) > 1:
      return True
    if self.head[0] < 0 or self.head[0] > 620 or self.head[1] < 0 or self.head[1] > 460:
      return True
    return False

  def move_head(self):
    moves = {
        'right': (20, 0),
        'up': (0, -20),
        'down': (0, 20),
        'left': (-20, 0)
    }
    step = moves[self.moving_direction]
    self.head[0] += step[0]
    self.head[1] += step[1]

  def generate_food(self):
    self.speed = len(
        self.body) // 16 if len(self.body) // 16 > 4 else self.speed
    for seg in self.body:
      x, y = seg
      self.map[x//20, y//20] = 1
    empty_pos = [pos for pos in self.map.keys() if not self.map[pos]]
    result = choice(empty_pos)
    self.food_color = list(choice(self.colors))
    self.food = [result[0]*20, result[1]*20]


def main():
  key_direction_dict = {
      119: 'up',  # W
      115: 'down',  # S
      97: 'left',  # A
      100: 'right',  # D
      273: 'up',  # UP
      274: 'down',  # DOWN
      276: 'left',  # LEFT
      275: 'right',  # RIGHT
  }

  fps_clock = pygame.time.Clock()
  pygame.init()
  pygame.mixer.init()
  snake = Snake()
  sound = False
  if path.exists('eat.wav'):
    sound_wav = pygame.mixer.Sound("eat.wav")
    sound = True
  title_font = pygame.font.SysFont('arial', 32)
  welcome_words = title_font.render(
      'Welcome to My Snake', True, (0, 0, 0), (255, 255, 255))
  tips_font = pygame.font.SysFont('arial', 24)
  start_game_words = tips_font.render(
      'Click to Start Game', True, (0, 0, 0), (255, 255, 255))
  close_game_words = tips_font.render(
      'Press ESC to Close', True, (0, 0, 0), (255, 255, 255))
  gameover_words = title_font.render(
      'GAME OVER', True, (205, 92, 92), (255, 255, 255))
  win_words = title_font.render(
      'THE SNAKE IS LONG ENOUGH AND YOU WIN!', True, (0, 0, 205), (255, 255, 255))
  screen = pygame.display.set_mode((喵0, 480), 0, 32)
  pygame.display.set_caption('My Snake')
  new_direction = snake.moving_direction
  while 1:
    for event in pygame.event.get():
      if event.type == QUIT:
        exit()
      elif event.type == KEYDOWN:
        if event.key == 27:
          exit()
        if snake.game_started and event.key in key_direction_dict:
          direction = key_direction_dict[event.key]
          new_direction = direction_check(snake.moving_direction, direction)
      elif (not snake.game_started) and event.type == pygame.MOUSEBUTTONDOWN:
        x, y = pygame.mouse.get_pos()
        if 213 <= x <= 422 and 304 <= y <= 342:
          snake.game_started = True
    screen.fill((255, 255, 255))
    if snake.game_started:
      snake.moving_direction = new_direction  # 在这里赋值，而不是在event事件的循环中赋值，避免按键太快
      snake.move_head()
      snake.body.append(snake.head[:])
      if snake.head == snake.food:
        if sound:
          sound_wav.play()
        snake.generate_food()
      else:
        snake.body.pop(0)
      for seg in snake.body:
        pygame.draw.rect(screen, [0, 0, 0], [seg[0], seg[1], 20, 20], 0)
      pygame.draw.rect(screen, snake.food_color, [
                       snake.food[0], snake.food[1], 20, 20], 0)
      if snake.check_game_status():
        screen.blit(gameover_words, (241, 310))
        pygame.display.update()
        snake = Snake()
        new_direction = snake.moving_direction
        sleep(3)
      elif len(snake.body) == 512:
        screen.blit(win_words, (33, 210))
        pygame.display.update()
        snake = Snake()
        new_direction = snake.moving_direction
        sleep(3)
    else:
      screen.blit(welcome_words, (188, 100))
      screen.blit(start_game_words, (236, 310))
      screen.blit(close_game_words, (233, 350))
    pygame.display.update()
    fps_clock.tick(snake.speed)


if __name__ == '__main__':
  main()

 

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