2048遊戲python代碼

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#-*- coding:utf-8 -*-import cursesfrom random import randrange, choice # generate and place new tilefrom collections import defaultdictletter_codes = [ord(ch) for ch in WASDRQwasdrq]actions = [Up, Left, Down, Right, Restart, Exit]actions_dict = dict(zip(letter_codes, actions * 2))def get_user_action(keyboard): char = "N" while char not in actions_dict: char = keyboard.getch() return actions_dict[char]def transpose(field): return [list(row) for row in zip(*field)]def invert(field): return [row[::-1] for row in field]class GameField(object): def __init__(self, height=4, width_=4, win=2048): self.height = height self.width = width self.win_value = win self.score = 0 self.highscore = 0 self.reset() def reset(self): if self.score > self.highscore: self.highscore = self.score self.score = 0 self.field = [[0 for i in range(self.width)] for j in range(self.height)] self.spawn() self.spawn() def move(self, direction): def move_row_left(row): def tighten(row): # squeese non-zero elements together new_row = [i for i in row if i != 0] new_row += [0 for i in range(len(row) - len(new_row))] return new_row def merge(row): pair = False new_row = [] for i in range(len(row)): if pair: new_row.append(2 * row[i]) self.score += 2 * row[i] pair = False else: if i + 1 < len(row) and row[i] == row[i + 1]: pair = True new_row.append(0) else: new_row.append(row[i]) assert len(new_row) == len(row) return new_row return tighten(merge(tighten(row))) moves = {} moves[Left] = lambda field: [move_row_left(row) for row in field] moves[Right] = lambda field: invert(moves[Left](invert(field))) moves[Up] = lambda field: transpose(moves[Left](transpose(field))) moves[Down] = lambda field: transpose(moves[Right](transpose(field))) if direction in moves: if self.move_is_possible(direction): self.field = moves[direction](self.field) self.spawn() return True else: return False def is_win(self): return any(any(i >= self.win_value for i in row) for row in self.field) def is_gameover(self): return not any(self.move_is_possible(move) for move in actions) def draw(self, screen): help_string1 = (W)Up (S)Down (A)Left (D)Right help_string2 = (R)Restart (Q)Exit gameover_string = GAME OVER win_string = YOU WIN! def cast(string): screen.addstr(string +
) def draw_hor_separator(): line = + + (+------ * self.width + +)[1:] separator = defaultdict(lambda: line) if not hasattr(draw_hor_separator, "counter"): draw_hor_separator.counter = 0 cast(separator[draw_hor_separator.counter]) draw_hor_separator.counter += 1 def draw_row(row): cast(.join(|{: ^5} .format(num) if num > 0 else | for num in row) + |) screen.clear() cast(SCORE: + str(self.score)) if 0 != self.highscore: cast(HIGHSCORE: + str(self.highscore)) for row in self.field: draw_hor_separator() draw_row(row) draw_hor_separator() if self.is_win(): cast(win_string) else: if self.is_gameover(): cast(gameover_string) else: cast(help_string1) cast(help_string2) def spawn(self): new_element = 4 if randrange(100) > 89 else 2 (i,j) = choice([(i,j) for i in range(self.width) for j in range(self.height) if self.field[i][j] == 0]) self.field[i][j] = new_element def move_is_possible(self, direction): def row_is_left_movable(row): def change(i): # true if therell be change in i-th tile if row[i] == 0 and row[i + 1] != 0: # Move return True if row[i] != 0 and row[i + 1] == row[i]: # Merge return True return False return any(change(i) for i in range(len(row) - 1)) check = {} check[Left] = lambda field: any(row_is_left_movable(row) for row in field) check[Right] = lambda field: check[Left](invert(field)) check[Up] = lambda field: check[Left](transpose(field)) check[Down] = lambda field: check[Right](transpose(field)) if direction in check: return check[direction](self.field) else: return Falsedef main(stdscr): def init(): #重置遊戲棋盤 game_field.reset() return Game def not_game(state): #畫出 GameOver 或者 Win 的界面 game_field.draw(stdscr) #讀取用戶輸入得到action，判斷是重啟遊戲還是結束遊戲 action = get_user_action(stdscr) responses = defaultdict(lambda: state) #默認是當前狀態，沒有行為就會一直在當前界面循環 responses[Restart], responses[Exit] = Init, Exit #對應不同的行為轉換到不同的狀態 return responses[action] def game(): #畫出當前棋盤狀態 game_field.draw(stdscr) #讀取用戶輸入得到action action = get_user_action(stdscr) if action == Restart: return Init if action == Exit: return Exit if game_field.move(action): # move successful if game_field.is_win(): return Win if game_field.is_gameover(): return Gameover return Game state_actions = { Init: init, Win: lambda: not_game(Win), Gameover: lambda: not_game(Gameover), Game: game } curses.use_default_colors() # 設置終結狀態最大數值為 32 game_field = GameField(win=32) state = Init #狀態機開始循環 while state != Exit: state = state_actions[state]()curses.wrapper(main)

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