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How to make games in python

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(*-*)浩Original
2019-07-20 10:48:4715557browse

PyGame is a Python library that makes it easier for you to write a game. It provides functions such as image processing and sound playback, and they can be easily integrated into your game.

How to make games in python

The following is the code for backgammon, and my understanding is written in the comments(recommended learning: Python Video tutorial)

import pygame
# 导入pygame模块
print(pygame.ver)
# 检查pygame的版本,检查pygame有没有导入成功

EMPTY = 0
BLACK = 1
WHITE = 2
# 定义三个常量函数,用来表示白棋,黑棋,以及 空

black_color = [0, 0, 0]
# 定义黑色(黑棋用,画棋盘)
white_color = [255, 255, 255]
# 定义白色(白棋用)

# 定义棋盘这个类
class RenjuBoard(object):

  def __init__(self):
    # self._board = board = [[EMPTY] * 15 for _ in range(15)]
    # 将棋盘每一个交叉点都看作列表的一个元素位,一共有15*15共225个元素
    self._board = [[]] * 15
    self.reset()
  #重置棋盘
  def reset(self):
    for row in range(len(self._board)):
      self._board[row] = [EMPTY] * 15
  #定义棋盘上的下棋函数,row表示行,col表示列,is_black表示判断当前点位该下黑棋,还是白棋
  def move(self, row, col, is_black):
    if self._board[row][col] == EMPTY:
      self._board[row][col] = BLACK if is_black else WHITE
      return True
    return False
  # 给棋盘定义一个函数将自己在screen上面画出来,使用pygame.draw()函数。并且顺便将下了的棋子也画出来
  def draw(self, screen):
    for h in range(1, 16):
      pygame.draw.line(screen, black_color,
               [40, h * 40], [600, h * 40], 1)
      pygame.draw.line(screen, black_color,
    # 给棋盘加一个外框,使美观
    pygame.draw.rect(screen, black_color, [36, 36, 568, 568], 3)
    # 在棋盘上标出,天元以及另外4个特殊点位
    pygame.draw.circle(screen, black_color, [320, 320], 5, 0)
    pygame.draw.circle(screen, black_color, [160, 160], 3, 0)
    pygame.draw.circle(screen, black_color, [160, 480], 3, 0)
    pygame.draw.circle(screen, black_color, [480, 160], 3, 0)
    pygame.draw.circle(screen, black_color, [480, 480], 3, 0)
    #做2次for循环取得棋盘上所有交叉点的坐标
    for row in range(len(self._board)):
      for col in range(len(self._board[row])):
        # 将下在棋盘上的棋子画出来
        if self._board[row][col] != EMPTY:
          ccolor = black_color \
            if self._board[row][col] == BLACK else white_color
          # 取得这个交叉点下的棋子的颜色,并将棋子画出来
          pos = [40 * (col + 1), 40 * (row + 1)]
          # 画出棋子
          pygame.draw.circle(screen, ccolor, pos, 18, 0)

# 定义函数,传入当前棋盘上的棋子列表,输出结果,不管黑棋白棋胜,都是传回False,未出结果则为True
def is_win(board):
  for n in range(15):
    # 判断垂直方向胜利
    flag = 0
    # flag是一个标签,表示是否有连续以上五个相同颜色的棋子
    for b in board._board:
      if b[n] == 1:
        flag += 1
        if flag == 5:
          print('黑棋胜')
          return False
      else:
      # else表示此时没有连续相同的棋子,标签flag重置为0
        flag = 0

    flag = 0
    for b in board._board:
      if b[n] == 2:
        flag += 1
        if flag == 5:
          print('白棋胜')
          return False
      else:
        flag = 0

    # 判断水平方向胜利
    flag = 0
    for b in board._board[n]:
      if b == 1:
        flag += 1
        if flag == 5:
          print('黑棋胜')
          return False
      else:
        flag = 0

    flag = 0
    for b in board._board[n]:
      if b == 2:
        flag += 1
        if flag == 5:
          print('白棋胜')
          return False
      else:
        flag = 0

    # 判断正斜方向胜利

    for x in range(4, 25):
      flag = 0
      for i,b in enumerate(board._board):
        if 14 >= x - i >= 0 and b[x - i] == 1:
          flag += 1
          if flag == 5:
            print('黑棋胜')
            return False
        else:
          flag = 0

    for x in range(4, 25):
      flag = 0
      for i,b in enumerate(board._board):
        if 14 >= x - i >= 0 and b[x - i] == 2:
          flag += 1
          if flag == 5:
            print('白棋胜')
            return False
        else:
          flag = 0

    #判断反斜方向胜利
    for x in range(11, -11, -1):
      flag = 0
      for i,b in enumerate(board._board):
        if 0 <= x + i <= 14 and b[x + i] == 1:
          flag += 1
          if flag == 5:
            print('黑棋胜')
            return False
        else:
          flag = 0

    for x in range(11, -11, -1):
      flag = 0
      for i,b in enumerate(board._board):
        if 0 <= x + i <= 14 and b[x + i] == 2:
          flag += 1
          if flag == 5:
            print('白棋胜')
            return False
        else:
          flag = 0

  return True


def main():
  # 创建棋盘对象
  board = RenjuBoard()
  # 用于判断是下黑棋还是白棋
  is_black = True
  # pygame初始化函数,固定写法
  pygame.init()
  pygame.display.set_caption('五子棋') # 改标题
  # pygame.display.set_mode()表示建立个窗口,左上角为坐标原点,往右为x正向,往下为y轴正向
  screen = pygame.display.set_mode((640,640))
  # 给窗口填充颜色,颜色用三原色数字列表表示
  screen.fill([125,95,24])
  board.draw(screen) # 给棋盘类发命令,调用draw()函数将棋盘画出来
  pygame.display.flip() # 刷新窗口显示

  running = True
  # while 主循环的标签,以便跳出循环
  while running:
    # 遍历建立窗口后发生的所有事件,固定写法
    for event in pygame.event.get():
      # 根据事件的类型,进行判断
      if event.type == pygame.QUIT:
        running = False

      elif event.type == pygame.KEYUP:
        pass
      # pygame.MOUSEBUTTONDOWN表示鼠标的键被按下
      elif event.type == pygame.MOUSEBUTTONDOWN and \
          event.button == 1:# button表示鼠标左键
        x, y = event.pos # 拿到鼠标当前在窗口上的位置坐标
        # 将鼠标的(x, y)窗口坐标,转化换为棋盘上的坐标
        row = round((y - 40) / 40)   
        col = round((x - 40) / 40)
        if board.move(row, col, is_black):
          is_black = not is_black
          screen.fill([125, 95, 24])
          board.draw(screen)
          pygame.display.flip()
          # 调用判断胜负函数
          if not is_win(board):
            #break
          running = False
# 这里我有个bug没找到解决办法,就是判断出胜负后,使用break跳出事件遍历的for循环,但是老是不能跳出来,导致胜负分出来了
#还可以继续下,这里我采用判断胜负后就将running标签赋值为False,跳出主循环,但是这样棋盘的窗口也没了。明天再找找bug在哪

  pygame.quit()

if __name__ == '__main__':
  main()

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