Question

我正在使用pygame创建一个连接四游戏。我创建了一个名为playerOne的函数，其中包含该播放器的所有代码。我有一个名为playerTwo的第二个函数，其中包含第二个玩家的所有代码。在我的游戏循环中，我想调用第一个函数，让该玩家移动，然后让第二个玩家移动。这应该循环直到游戏结束。问题在于，无论我尝试多少，它都只运行一个功能，永远不会进入下一个功能。在下面的代码中，我删除了大部分功能代码，因为它只是重复自己。感谢先进的任何查看此代码的人！

import pygame as pg 

#window Size, Sprites, Colors, etc.
display = pg.display.set_mode((500, 500))
white = (255, 255 , 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
board = pg.image.load('board.png')
chipRed = pg.Rect(10, 10, 10, 10)
chipBlack = pg.Rect(10, 10, 10, 10)
display.fill(white)
display.blit(board, (100, 100)) # draws the blank board
playerOneOver = False # Defaults to having player one's turn be NOT over


#board in list form, so the game can later store were chips are located 
boardRowOne = ['b', 'b', 'b', 'b', 'b', 'b', 'b']
boardRowTwo = ['b', 'b', 'b', 'b', 'b', 'b', 'b']
boardRowThree = ['b', 'b', 'b', 'b', 'b', 'b', 'b']
boardRowFour = ['b', 'b', 'b', 'b', 'b', 'b', 'b']
boardRowFive = ['b', 'b', 'b', 'b', 'b', 'b', 'b']
boardRowSix = ['b', 'b', 'b', 'b', 'b', 'b', 'b']

#Player ones move
def playerOne():
    #player settings
    chipColor = red

    #display player one is up
    pg.draw.rect(display, chipColor, (230, 5, 20, 20))

    #Colum selection
    mousePressed = pg.mouse.get_pressed()
    mousePos = pg.mouse.get_pos()   
    for event in pg.event.get():
        if event.type == pg.QUIT: #Exit Out
            pg.quit()
            exit()
        if columOne.collidepoint(mousePos) and mousePressed[0]: # if colum one was selected
            if 'b' in boardRowSix[0]: # if nothing is in row 6 colum one
                del(boardRowSix[0])
                boardRowSix.insert(0, 'r')
                pg.draw.rect(display, chipColor, (110, 320, 20, 20))
                playerOneOver = True
            elif 'b' in boardRowFive[0]: # if nothing is in row 5 colum one
                del(boardRowFive[0])
                boardRowFive.insert(0, 'r')
                pg.draw.rect(display, chipColor, (110, 280, 20, 20))
                playerOneOver = True
            #The above elif is repated for every other colum and row, but I cut it out for my post

#player two move
def playerTwo():
    #player settings
    chipColor = black

    #display player one is up
    pg.draw.rect(display, chipColor, (230, 5, 20, 20))

    #Colum selection
    mousePressed = pg.mouse.get_pressed()
    mousePos = pg.mouse.get_pos()   
    for event in pg.event.get():
        if event.type == pg.QUIT: #Exit Out
            pg.quit()
            exit()
        if columOne.collidepoint(mousePos) and mousePressed[0]: # if colum one was selected
            if 'b' in boardRowSix[0]: # if nothing is in row 6 colum one
                del(boardRowSix[0])
                boardRowSix.insert(0, 'B')
                pg.draw.rect(display, chipColor, (110, 320, 20, 20))
            elif 'b' in boardRowFive[0]: # if nothing is in row 5 colum one
                del(boardRowFive[0])
                boardRowFive.insert(0, 'B')
                pg.draw.rect(display, chipColor, (110, 280, 20, 20))
            #The above elif is repated for every other colum and row, but I cut it out for my post

#game loop
while True:

    #Draw the colum selection
    columOne = pg.Rect(105, 70, 30, 30)
    columTwo = pg.Rect(150, 70, 30, 30)
    columThree = pg.Rect(190, 70, 30, 30)
    columFour = pg.Rect(235, 70, 30, 30)
    columFive = pg.Rect(280, 70, 30, 30)
    columSix = pg.Rect(320, 70, 30, 30)
    columSeven = pg.Rect(365, 70, 30, 30)
    pg.draw.rect(display, blue, (105, 70, 30, 30))
    pg.draw.rect(display, blue, (150, 70, 30, 30))
    pg.draw.rect(display, blue, (190, 70, 30, 30))
    pg.draw.rect(display, blue, (235, 70, 30, 30))
    pg.draw.rect(display, blue, (280, 70, 30, 30))
    pg.draw.rect(display, blue, (320, 70, 30, 30))
    pg.draw.rect(display, blue, (365, 70, 30, 30))

    if playerOneOver == False: # only run if player ones move is over
        playerOne()
    if playerOneOver == True: # run when player ones move is over
        playerTwo() 
    pg.display.flip() # updates the drawings

    #print the board list
    print(boardRowOne)
    print(boardRowTwo)
    print(boardRowThree)
    print(boardRowFour)
    print(boardRowFive)
    print(boardRowSix)

Answer 1

尝试在while循环中打印playerOneOver。您会发现它总是False。

这是一个范围问题。您正在尝试更新playerOneOver函数内的playerOne()变量，但由于范围实际发生的是您的函数中正在创建新的playerOneOver，它不会更新你在开始时定义的那个。

这是理想的行为。您可以阅读很多关于范围的内容，例如here。

更新变量的更pythonic方法是存储函数的返回值。请考虑以下代码来解决您的问题。

a = 'woo'

def update_bad():
    a = 'wee'

def update_good():
    return 'wee'

print 'Before bad update:',a
update_bad()
print 'After bad update:',a

print 'Before good update:',a
a = update_good()
print 'After good update:',a

尝试在游戏循环中运行一个函数，然后退出该函数并运行一个单独的函数

1 个答案: