【问题标题】:Logic Error in a matrix roll dice program in PythonPython中矩阵掷骰子程序中的逻辑错误
【发布时间】:2017-02-03 18:08:24
【问题描述】:

我有一个简单游戏的以下代码,让 player1 和 player2 轮流掷两个六面骰子(骰子)。达到 49(矩阵中的最后一个数字)时,玩家将获胜。玩家从 1 开始,然后将滚动的数字向上移动(两个骰子的总和)。

我的代码中有三个错误(逻辑错误),我需要一些帮助。

1)获胜者功能不起作用。如果玩家达到 49 或接近(见最后的输出),从逻辑上讲,他们不会获胜。 (只需按住 Enter 键运行测试并查看下面粘贴的特殊输出)。玩家 1 和玩家 2 可以达到 49,但不会将他们带到“winner()”模块。为什么?我是否正确使用了“>=”?

话虽如此,在一次测试中:玩家 2 达到了 49,但它没有进入 winner() 模块:

    Press Enter to continue
Player 2, it's your turn to roll the dice: Press r to roll:>>>
Player2: You rolled a: 4 and a 6 which gives you a: 10
You have moved 10 spaces to position:....... 49

2)在完全退出程序并重新启动时,player1position和player2position的值被重置为0并且可以工作。但如果我只是去 main() 重玩游戏,这些值不会重置。我不完全理解全局变量和初始化的使用和声明。任何人都可以阐明一些解释/建议会有所帮助

3)未正确处理负数。如果玩家在任何回合中掷出两个相同的数字,则他们应该返回滚动的数字。例如如果掷出 2 和 2,则玩家返回 4。但是,如果玩家在 5、10 个空格到 -5 时返回,则下一回合不会将 player1position 或 player2position 和计数搞砸了。我尝试了各种修复方法,并且对任何 cmets、建议和改进感兴趣。

错误输出如下:

首先,这是矩阵:

*************LOADING GAME******************
Welcome: player1 and player2
[43, 44, 45, 46, 47, 48, 49]
[42, 41, 40, 39, 38, 37, 36]
[29, 30, 31, 32, 33, 34, 35]
[28, 27, 26, 25, 24, 23, 22]
[15, 16, 17, 18, 19, 20, 21]
[14, 13, 12, 11, 10, 9, 8]
[1, 2, 3, 4, 5, 6, 7]

相关代码如下:

import sys
import csv
import random 
def main():
    startscreen()

def loadstartgame(player1,player2):
    with open("messages.txt","r") as f:
        idnumber="1"
        fReader=csv.reader(f)
        for row in fReader:
            for field in row:
                if field==idnumber:
                                       print(row[2])


        start=input("Start?:>>")

        if start=="s" or "S":

            callmatrix(player1,player2,7)

def startscreen():
    print("******************************Welcome to CONQUER THE MATRIX****************************")
    print("You can take on a friend in this game")
    player1=input("Enter name of Player 1: ")
    player2=input("Enter name of Player 2: ")
    print("Welcome ...", player1,"and, ", player2, "...Are you ready?")
    response=input("Yes or No? Player 1 - perhaps you could confirm please: ")
    if response=="yes" or "Yes" or "yEs" or "YeS":
        loadstartgame(player1, player2)
    else:
        sys.exit()



def matrix(n): 
    grid = [[1 + i + n * j for i in range(n)] for j in range(n)] 
    for row in grid[1::2]:
        row.reverse()    
    return grid[::-1][:]

def callmatrix(player1,player2, n):
    print("*************LOADING GAME******************")
    print("Welcome:", player1,"and", player2)
    for i in matrix(n):
            print(i)
    playing = True
    playerturns(player1,player2,playing)


def playerturns(player1,player2,playing):

    print(" - - - - - - - - - - ")
    print("Press Enter to continue")

    while(playing):     
        roll=input()
        if roll=="":
            RollTwoDiceP1(player1,player2)

        else:
            break
    RollTwoDiceP2(player1,player2)


global player1position #declare a local variable called player1position
player1position=0 #set the global variable before the start of this sub to 0
def RollTwoDiceP1(player1,player2):
    global player1position

    print("player1position in PLAYER1ROLL", player1position)
    #print("player1position at stat of RollTwoDicep1", player1position) #a test that prints the current value of player 1 position
    turn=input("Player 1, it's your turn to roll the dice: Press r to roll:>>>")
    die1=random.randint(1,6)
    die2=random.randint(1,6)
    #die1=5 #for testing purposes
    #die2=5 #for testing purposes
    roll=die1+die2    
    print("Player1: You rolled a:", die1, "and a", die2, "which gives you a:", roll)
    playing = False

    matrixlist=matrix(7)

    if die1==die2:
        gobackspacesP1(roll,player1,player2)
    else:
        print("You have moved", roll, "spaces to position:.......",matrixlist[6][0]+(roll+player1position))
    #print("playerposition plus roll:", player1position+roll) #a test that prints the playerposition+roll - this always comes up to 1 more than it should do on the location, so below substract 1, to make it produce an accurate location on the matrix for a particular roll
    player1position=matrixlist[6][0]+(roll+player1position)
    if player1position>=49:
                winner()
    else:
                playerturns(player1,player2,playing)

#global player1position
#global player2position
def gobackspacesP1(roll,player1,player2):
    global player1position
    if player1position<=1:
        player1position=0
        print("Oh dear - sorry you are now back to square 1 - literally!")
    else:
        print("Oh dear -you are now back on the matrix to position:", (1+player1position)-roll)
        matrixlist=matrix(7)
        #new player1position=the first playerposition minus the roll (rather than add it) and + 1 (as the initial position is always 1)
        player1position=1+(player1position-roll)
        #player1position=matrixlist[6][0]+(roll+player1position)-roll
    playing=False
    print("player1position in goback", player1position)
    playerturns(player1,player2,playing)



def gobackspacesP2(roll,player1,player2):
    global player2position
    if player2position<=1:
        player2position=0
        print("Oh dear - sorry you are now back to square 1 - literally!")
    else:
        print("Oh dear -you are now back on the matrix to position:", (1+player2position)-roll)
        matrixlist=matrix(7)
        #new player1position=the first playerposition minus the roll (rather than add it) and + 1 (as the initial position is always 1)
        player2position=1+(player2position-roll)
        #player1position=matrixlist[6][0]+(roll+player1position)-roll
    playing=True
    print("player2position in goback", player2position)
    playerturns(player1,player2,playing)


global player2position
player2position=0
def RollTwoDiceP2(player1,player2):
    global player2position
#Remember you need to add the functioanlity for a double identical dice roll to this subroutine for Player2 as well. 
    turn=input("Player 2, it's your turn to roll the dice: Press r to roll:>>>")
    die1=random.randint(1,6)
    die2=random.randint(1,6)
    roll=die1+die2    
    print("Player2: You rolled a:", die1, "and a", die2, "which gives you a:", roll)
    playing = True
    matrixlist=matrix(7)

    if die1==die2:
        gobackspacesP2(roll,player1,player2)
    else:
        print("You have moved", roll, "spaces to position:.......",matrixlist[6][0]+(roll+player2position))
    #print("playerposition plus roll:", player1position+roll) #a test that prints the playerposition+roll - this always comes up to 1 more than it should do on the location, so below substract 1, to make it produce an accurate location on the matrix for a particular roll
    player2position=matrixlist[6][0]+(roll+player2position)
    if player2position>=49:
                winner()
    else:
                playerturns(player1,player2,playing)

def winner():
    print("Ahh, it appears you have won! Congratulations!")
    sys.exit()

def easygrid():
    grid=[[43,44,45,46,47,48,49],[42,41,40,39,38,37,36],[29,30,31,32,33,34,35],[28, 27, 26, 25,24,23,22], [15,16,17, 18, 19, 20, 21], [14, 13, 12, 11, 10, 9, 8], [1, 2, 3,4,5,6,7]]
    for i in grid:
        print(i)
main()

我也对任何关于我使用全局变量以及如何在这种情况下最好地使用/不使用它们的 cmets 感兴趣。

我不想要基于类的解决方案,所以答案必须是解决这个问题。

错误的输出 1(只有玩家 2 获胜,即使玩家 1 应该获胜) 获胜前的最后几轮:

player1position in PLAYER1ROLL 38
Player 1, it's your turn to roll the dice: Press r to roll:>>>
Player1: You rolled a: 3 and a 5 which gives you a: 8
You have moved 8 spaces to position:....... 47
- - - - - - - - - - 
Press Enter to continue
Player 2, it's your turn to roll the dice: Press r to roll:>>>
Player2: You rolled a: 6 and a 5 which gives you a: 11
You have moved 11 spaces to position:....... 43
- - - - - - - - - - 
Press Enter to continue

player1position in PLAYER1ROLL 46
Player 1, it's your turn to roll the dice: Press r to roll:>>>
Player1: You rolled a: 3 and a 5 which gives you a: 8
You have moved 8 spaces to position:....... 55
- - - - - - - - - - 
Press Enter to continue
Player 2, it's your turn to roll the dice: Press r to roll:>>> 
Player2: You rolled a: 6 and a 1 which gives you a: 7
You have moved 7 spaces to position:....... 50
You've won! Congratulations!

【问题讨论】:

  • 我没有使用矩阵来存储玩家的位置?它们都存储为全局变量 player1position 和 player2position .....你是什么意思使用矩阵??
  • @PythonFish 这个问题太宽泛了,你没有给我们足够的信息来解决所有问题(值重置)。您是否使用过传递给每个函数的player1, player2
  • 我强烈建议使用包含您的方法的类,并将玩家位置作为属性而不是全局变量。
  • 我在帖子中提到我不想使用类....但是是的,请注意。
  • 如果我不得不猜测这个问题,你不会在第一次声明时声明全局变量,只有在那之后,所以你第一次声明你的 player1position...,它不应该有一个global 标签。 @PythonFish 您可以突出显示所有代码并点击{} 按钮

标签: python matrix logic dice


【解决方案1】:

错误出现在这一行:(在 RollTwoDice1 和 RollTwoDice2 子中)

player1position=matrixlist[6][0]+(roll+player1position)

matrixlist[6][0] 被添加了一个错误的 +1,当删除它时,逻辑错误排序。

另外:(在 gobacktospaces 子中)

 player2position=1+(player2position-roll)

它有一个额外的 -1,它不断地扭曲获胜者功能和加起来的结果。

【讨论】:

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