解释代码:elif direction == 'up': for j in range(4): col = [board[i][j] for i in range(4)] col = [x for x in col if x != 0] + [0] * col.count(0) for i in range(4): board[i][j] = col[i]
时间: 2023-05-24 21:06:49 浏览: 54
这是Python的一个if-elif语句块中的elif分支,它检查变量direction的值是否等于'up'。
如果条件为真,它将对4列分别执行以下操作:
1. 从board中选择每一列,将该列中所有非零的元素存储在col列表中。
2. 通过将0与col.count(0)相乘,将与0相等的元素替换为0。
3. 将剩下的元素按原始顺序重新分配到board中的同一列中。
这些步骤模拟了向上移动时,从底部开始按顺序将元素移动到最靠近顶部的位置,这是2048游戏中一种常见的移动策略。
相关问题
python代码1024游戏
以下是一个简单的Python代码实现的1024游戏的例子:
```python
import random
# 初始化游戏面板
def init_board():
board = [[0] * 4 for _ in range(4)]
return board
# 在空白位置随机生成一个数字
def generate_number(board):
empty_cells = []
for i in range(4):
for j in range(4):
if board[i][j] == 0:
empty_cells.append((i, j))
if empty_cells:
row, col = random.choice(empty_cells)
board[row][col] = random.choice([2, 4])
# 打印游戏面板
def print_board(board):
for row in board:
print('\t'.join(str(num) for num in row))
print()
# 移动数字
def move(board, direction):
if direction == 'up':
for col in range(4):
for row in range(1, 4):
if board[row][col] != 0:
i = row
while i > 0 and board[i-1][col] == 0:
board[i-1][col] = board[i][col]
board[i][col] = 0
i -= 1
if i > 0 and board[i-1][col] == board[i][col]:
board[i-1][col] *= 2
board[i][col] = 0
elif direction == 'down':
for col in range(4):
for row in range(2, -1, -1):
if board[row][col] != 0:
i = row
while i < 3 and board[i+1][col] == 0:
board[i+1][col] = board[i][col]
board[i][col] = 0
i += 1
if i < 3 and board[i+1][col] == board[i][col]:
board[i+1][col] *= 2
board[i][col] = 0
elif direction == 'left':
for row in range(4):
for col in range(1, 4):
if board[row][col] != 0:
j = col
while j > 0 and board[row][j-1] == 0:
board[row][j-1] = board[row][j]
board[row][j] = 0
j -= 1
if j > 0 and board[row][j-1] == board[row][j]:
board[row][j-1] *= 2
board[row][j] = 0
elif direction == 'right':
for row in range(4):
for col in range(2, -1, -1):
if board[row][col] != 0:
j = col
while j < 3 and board[row][j+1] == 0:
board[row][j+1] = board[row][j]
board[row][j] = 0
j += 1
if j < 3 and board[row][j+1] == board[row][j]:
board[row][j+1] *= 2
board[row][j] = 0
# 判断游戏是否结束
def is_game_over(board):
for row in board:
if 0 in row:
return False
for i in range(4):
for j in range(3):
if board[i][j] == board[i][j+1] or board[j][i] == board[j+1][i]:
return False
return True
# 主函数
def main():
board = init_board()
generate_number(board)
generate_number(board)
print_board(board)
while not is_game_over(board):
direction = input("请输入移动方向(上:up,下:down,左:left,右:right):")
move(board, direction)
generate_number(board)
print_board(board)
print("游戏结束!")
if __name__ == '__main__':
main()
```
写一篇基于python语言的2048游戏的代码
好的,以下是基于Python语言的2048游戏代码:
```python
import random
# 初始化游戏面板
def init_board():
board = [[0] * 4 for i in range(4)]
return board
# 在游戏面板中随机生成一个新的数字方块
def new_block(board):
empty_cells = []
for i in range(4):
for j in range(4):
if board[i][j] == 0:
empty_cells.append((i, j))
if len(empty_cells) > 0:
row, col = random.choice(empty_cells)
board[row][col] = random.choice([2, 4])
# 在游戏面板中移动数字方块
def move(board, direction):
if direction == "left":
for i in range(4):
board[i] = merge(board[i])
elif direction == "right":
for i in range(4):
board[i] = merge(board[i][::-1])[::-1]
elif direction == "up":
for i in range(4):
col = [board[j][i] for j in range(4)]
merged_col = merge(col)
for j in range(4):
board[j][i] = merged_col[j]
elif direction == "down":
for i in range(4):
col = [board[j][i] for j in range(4)][::-1]
merged_col = merge(col)[::-1]
for j in range(4):
board[j][i] = merged_col[j]
# 合并数字方块
def merge(cells):
merged_cells = [0] * 4
j = 0
for i in range(4):
if cells[i] != 0:
if merged_cells[j] == 0:
merged_cells[j] = cells[i]
elif merged_cells[j] == cells[i]:
merged_cells[j] *= 2
j += 1
else:
j += 1
merged_cells[j] = cells[i]
return merged_cells
# 判断游戏是否结束
def is_over(board):
for i in range(4):
for j in range(4):
if board[i][j] == 0:
return False
if i < 3 and board[i][j] == board[i+1][j]:
return False
if j < 3 and board[i][j] == board[i][j+1]:
return False
return True
# 打印游戏面板
def print_board(board):
for i in range(4):
for j in range(4):
print(board[i][j], end="\t")
print()
# 主函数
def main():
board = init_board()
new_block(board)
new_block(board)
print_board(board)
while not is_over(board):
direction = input("Enter direction: ")
move(board, direction)
new_block(board)
print_board(board)
print("Game over")
if __name__ == "__main__":
main()
```
这个代码实现了一个基本的2048游戏,可以通过输入left、right、up、down来移动数字方块,每移动一次会随机生成一个新的数字方块,直到游戏结束。