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我的代码绘制网格并设置 Xs 和 Os。我的问题是它在屏幕的右上角完成了所有操作。我想找到一种方法来做这一切，但要居中。问题是我希望它尽可能美观。一切正常，我对此完全没有问题，除了职位。我找不到将我的板设置在屏幕中央的命令。

from turtle import*

def tttDrawLineFromMidpoint(pen, orientation, lineLength):
    pen.setheading(orientation)
    pen.down()
    pen.fd(lineLength/2)
    pen.bk(lineLength)
    pen.fd(lineLength/2)

def tttDrawXFromMidpoint(pen, cellSize):
        lineLength = 1.41 * cellSize
        tttDrawLineFromMidpoint(pen, 45, lineLength)
        tttDrawLineFromMidpoint(pen, 135, lineLength)

def tttDrawX(pen, cellsize, row, col):

        x=col*cellsize
        y=row*cellsize

        x+=cellsize/2
        y+=cellsize/2

        pen.up()
        pen.goto(x,y)

        xSize = cellsize/2
        tttDrawXFromMidpoint(pen, xSize)

def tttDrawCircleFromPoint(pen, orientation,lineLength):
        pen.setheading(orientation)
        pen.down()
        pen.up()
        pen.fd(lineLength/1.5)
        pen.lt(45)
        pen.bk(25)
        pen.down()
        pen.circle(lineLength/2)

def tttDrawOFromPoint(pen, cellSize):
        lineLength = cellSize
        tttDrawCircleFromPoint(pen,90, lineLength)

def tttDrawO(pen, cellsize, row, col):

        x=col*cellsize
        y=row*cellsize

        x+=cellsize/2
        y+=cellsize/2

        pen.up()
        pen.goto(x,y)

        oSize = cellsize/2
        tttDrawOFromPoint(pen, oSize)

def tttDrawLineFromEnd(pen, orientation, lineLength):
        pen.setheading(orientation)
        pen.down()
        pen.fd(lineLength)
        pen.bk(lineLength)

def tttDrawGrid(pen,cellSize):
    pen.ht()

    for i in range (2):
                pen.up()
                pen.goto(0, cellSize * (i+1))
                tttDrawLineFromEnd(pen,0,3*cellSize)
    for i in range(2):
                pen.up()
                pen.goto(cellSize*(i+1),0)
                tttDrawLineFromEnd(pen,90,3*cellSize)

def ttt(cellSize):
        marker = Turtle()
        marker.width(3)
        marker.color('purple')
        tttDrawGrid(marker,cellSize)

def tttDrawXOTest(cellSize):
        marker = Turtle()
        marker.width(3)
        marker.color('purple')
        tttDrawGrid(marker,cellSize)
        xTurtle = Turtle()
        xTurtle.width(3)
        xTurtle.color('orange')
        for row in range(3):
            for col in range(3):
                    tttDrawX(xTurtle, cellSize, row, col)

        xTurtle = Turtle()
        xTurtle.width(3)
        xTurtle.color('pink')
        for row in range(3):
            for col in range(3):
                    tttDrawO(xTurtle, cellSize, row, col)


t=Turtle()
t.ht()
ttt(100)
print("Let's Play Tic Tac Toe >:D")
print("X goes first!")
x = input("Choose a row between 0-2: ")
x = int(x)
x = x
y = input("Choose a coluumn between 0-2: ")
y = int(y)
tttDrawX(t,100,x,y)

print("O goes next!")
x = input("Choose a row between 0-2: ")
x = int(x)
x = x
y = input("Choose a coluumn between 0-2: ")
y = int(y)
tttDrawO(t,100,x,y)

exitonclick()
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1 回答 1

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由于这个问题是关于使板居中的，因此我在下面的示例代码中删除了除板图之外的所有内容。关键是围绕零点进行数学运算，因此井字棋棋盘中线对的位置仅因符号而异：

from turtle import Turtle, Screen

def tttDrawLineFromEnd(pen, orientation, lineLength):
    pen.setheading(orientation)
    pen.down()
    pen.forward(lineLength)

def tttDrawGrid(pen, cellSize):
    for sign in (-1, 1):
        pen.up()
        pen.goto(-3 * cellSize / 2, sign * cellSize / 2)
        tttDrawLineFromEnd(pen, 0, 3 * cellSize)

    for sign in (-1, 1):
        pen.up()
        pen.goto(sign * cellSize / 2, -3 * cellSize / 2)
        tttDrawLineFromEnd(pen, 90, 3 * cellSize)

def ttt(cellSize):
    marker = Turtle(visible=False)
    marker.width(3)
    marker.color('purple')
    tttDrawGrid(marker, cellSize)

ttt(100)

screen = Screen()

screen.exitonclick()

我在使用海龟编程时使用的一个技巧是在创建海龟之后，我调用turtle.dot()以在屏幕的正中心制作一个可见点，这样我就知道我是否在我期望的地方绘图。然后我在我的最终代码中删除了这个调试辅助。

于 2016-12-18T18:32:32.917 回答