Wie kann ich mein Monster bewegen?

Question

Er sagt, diese

Traceback (most recent call last): 
File "dungeon2.py", line 93, in <module> 
move_monster(monster, steps) 
NameError: name 'steps' is not defined 

Wenn das Spiel beginnt, bleibt das Monster in ihm Position, aber ich bin mir nicht sicher, warum.

import random 

BOARD = [(0, 0), (0, 1), (0, 2), 
     (1, 0), (1, 1), (1, 2), 
     (2, 0), (2, 1), (2, 2)] 

def get_locations(): 
    monster = random.choice(BOARD) 
    start = random.choice(BOARD) 
    door = random.choice(BOARD) 

    #If player, door or monster are random, do it all over again. 
    if monster == door or monster == start or door == start: 
    return get_locations() 

    return monster, door, start 

def move_player(player, move): 
    x, y = player 
    if move == 'LEFT': 
    y -= 1 
    elif move == 'RIGHT': 
    y += 1 
    elif move == 'UP': 
    x -= 1 
    elif move == 'DOWN': 
    x +=1 
    else: 
    print("That move doesn't exist PLEASE.") 
    return x, y 

def move_monster(monster, steps): 
    x, y = monster 
    moves = ['LEFT', 'RIGHT', 'UP', 'DOWN'] 
    steps = random.choice(moves) 
    if steps == 'LEFT': 
    y -= 1 
    elif steps == 'RIGHT': 
    y += 1 
    elif steps == 'UP': 
    x -= 1 
    elif steps == 'DOWN': 
    x +=1 


def get_moves(player): 
    moves = ['LEFT', 'RIGHT', 'UP', 'DOWN'] 
    if player[1] == 0: 
    moves.remove('LEFT') 
    if player[1] == 2: 
    moves.remove('RIGHT') 
    if player[0] == 0: 
    moves.remove('UP') 
    if player[0] == 2: 
    moves.remove('DOWN') 
    return moves 


def draw_map(player, monster): 
    print('_ _ _') 
    tile = '|{}' 
    for idx, cell in enumerate(BOARD): 
    if idx in [0, 1, 3, 4, 6, 7]: 
     if cell == player: 
     print(tile.format("X"), end ='') 
     elif cell == monster: 
     print(tile.format("M"), end = '') 
     else: 
     print(tile.format("_"), end ='') 
    else: 
     if cell == player: 
     print(tile.format("X|")) 
     elif cell == monster: 
     print(tile.format("M|")) 
     else: 
     print(tile.format("_|"))  


monster, player, door = get_locations() 

print("Welcome to the dungeon! *evil laugh*") 

while True: 
    moves = get_moves(player) 

    draw_map(player, monster)    
    print("You are currently in room {}".format(player)) #fill in with player position 
    print("You can move {}".format(moves)) # fill in with available positions 
    print("Enter 'GIVEUP' to quit") 

    move = input("> ") 
    move = move.upper() 
    move_monster(monster, steps)          LINE 93 

    if move == "GIVEUP": 
     print("Giving up, you wait sadly for the Beast to find you. It does, and makes a tasty meal of you...") 
     print("You lose.") 
     break 

    if move in moves: 
     player = move_player(player, move) 
    else: 
     print("Walls are hard, stop walking into them!") 
     continue 
    if player == door: 
    print("You narrowly escaped the beast and escaped") 
    print("You win!") 
    break 
    elif player == monster: 
    print("The beast found you!") 
    print("You lose!") 
    print("Game over") 
    break 
    # If it's a good move, change the player's position 
    # If it's a bad move, don't change anything 
    # If the new position is the door, they win! 
    # If the new positon is the Beast's, they lose!  
    # Otherwise, continue 

und es sieht aus wie diese

|X|_|_|                              
|_|_|_|                              
|_|_|M| where M is player and X is monster 

Answer 1

Es gibt keinen Grund steps-move_monster nebenbei, wie Sie es in der dritten Zeile zu überschreiben, und nie den ursprünglichen Wert verwenden. legen Sie es einfach aus der Definition der Funktion:

def move_monster(monster): 
    # here ---------------^ 
    x, y = monster 
    moves = ['LEFT', 'RIGHT', 'UP', 'DOWN'] 
    steps = random.choice(moves) # steps is now a local variable 
    if steps == 'LEFT': 
    y -= 1 
    elif steps == 'RIGHT': 
    y += 1 
    elif steps == 'UP': 
    x -= 1 
    elif steps == 'DOWN': 
    x +=1 

Und aufhören zu versuchen, es zu passieren, wenn Sie die Funktion aufrufen:

move_monster(monster) 
# here -------------^ 

Answer 2

>>> monster = (2,3) 
>>> x,y=monster 
>>> x+=1 
>>> x, y 
(3, 3) 
>>> monster 
(2, 3) 

Wie man hier sehen kann, das Monster Position zu neuen Variablen zuweisen und das Ändern der neuen Variablen ändert nicht die Position des ursprünglichen Monsters.

def move_monster(monster): 
    x, y = monster 
    moves = ['LEFT', 'RIGHT', 'UP', 'DOWN'] 
    steps = random.choice(moves) 
    if steps == 'LEFT': 
    y -= 1 
    elif steps == 'RIGHT': 
    y += 1 
    elif steps == 'UP': 
    x -= 1 
    elif steps == 'DOWN': 
    x +=1 
    return x,y 

und: Nach Aufruf der Funktion Ändern Schritte als Parameter nicht nehmen (wie in Mureinik Antwort erklärt), würden Sie die Monster, wie Sie mit dem Spieler tat, indem Sie den Code der folgenden bewegen müssen

monster = move_monster(monster)