[英]Print part of a 2D list
我必須創建一個迷宮游戲,它接收來自用戶的命令以便玩游戲。 我已經為迷宮游戲編寫了代碼。 我想要修改的是僅在將迷宮打印給用戶時顯示部分迷宮(移動完成后)。 這是我的迷宮:
level = [
["1"," ","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1"],
["1"," "," ","1","1","1","1","1","1","1"," "," "," "," "," "," "," "," "," "," ","1","1","1","1","1"],
["1"," "," ","1","1","1","1","1","1","1"," "," ","1","1","1","1","1","1"," "," ","1","1","1","1","1"],
["1"," "," "," "," "," "," "," ","1","1"," "," ","1","1","1","1","1","1"," "," ","1","1","1","1","1"],
["1"," "," "," "," "," "," "," ","1","1"," "," ","1","1","1"," "," "," "," "," "," "," "," ","1","1"],
["1"," ","1","1","1","1"," "," ","1","1"," "," ","1","1","1"," "," "," "," "," "," "," "," ","1","1"],
["1"," ","1","1","1","1"," "," ","1","1"," "," ","1","1","1","1","1","1"," "," ","1","1","1","1","1"],
["1"," ","1","1","1","1"," "," ","1","1"," "," "," "," ","1","1","1","1"," "," ","1","1","1","1","1"],
["1"," "," ","1","1","1"," "," "," "," "," "," "," "," ","1","1","1","1"," "," "," "," "," "," ","1"],
["1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1"," ","1"]
]
start_maze = level[0][1] #start of maze
end_maze = level[9][23] #end of maze
輸出如下:
The initial configuration of the maze is:
1 X 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
如何制作它以便玩家只能在移動時看到迷宮的一部分,而不是能夠看到結束(這使得它很容易)?
所以例如要有這樣的視圖:
1 1 1 1
1 1 1
1 X 1 1
1
1
也就是說他只能在每個方向看到2個其他細胞。
我希望我明白這個問題。 如果需要,下面是主要游戲的代碼部分:
player = {'y': 0, 'x': 1}
level[player['y']][player['x']] = 'X'
# Translate keywords into coordinate changes
move_modifications = {'UP': {'y': -1, 'x': 0},
'DOWN': {'y': 1, 'x': 0},
'LEFT': {'y':0, 'x': -1},
'RIGHT': {'y': 0, 'x': 1}}
def player_move(maze):
# Main game loop
play = True
while play:
move = input("Please enter a command (LEFT/RIGHT/UP/DOWN): ")
move = move.upper()
coords = move_modifications[move]
new_y = player['y'] + coords['y']
new_x = player['x'] + coords['x']
#Catch them if they try to leave the map
try:
maze_position = maze[new_y][new_x]
except IndexError:
print("Not on map")
continue
if maze_position != '1':
# Move on the map
maze[player['y']][player['x']] = ' '
maze[new_y][new_x] = 'X'
# Update player coords
player['y'] = new_y
player['x'] = new_x
# Print result
print_level(maze)
其余的代碼只是移動,它不包括任何迷宮的打印。
NumPy數組可以方便地切割二維列表。 考慮下面的代碼和切片。
# load numpy from its module
import numpy as np
# create a numpy array
np_level = np.array(level)
# slice the map
slice = np_level[max(new_y-2,0) : new_y+3, \ # y slice
max(new_x-2,0) : new_x+3] # x slice
# print the slice
print(slice)
# or print_level(slice), whichever one suits your case
這將獲取您的2D數組level
,生成NumPy數組np_level
,然后從[y-2, y+3)
和[x-2, x+3)
范圍打印一個切片(使用區間符號)。 這意味着它將數組從y-2
切換到y+2
並從x-2
切換到x+2
包括兩者)。
在y-2
低於0(即為負)的情況下max(y-2, 0)
存在max(y-2, 0)
)。 使用負開頭 -index和正結束索引進行切片將返回一個空列表(例如some_array[-1:1] ==> []
)。 max(x-2, 0)
。 我們還可以為最終指示添加min(y+3, <height-of-level>)
和min(x+3, <width-of-level>)
,但是數組切片已經處理了這些邊緣情況 - 所以這一切都很好。
注意這需要安裝NumPy模塊。 如果還沒有,請通過在命令行/終端輸入python -m pip install numpy
安裝它。
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