问巨蟒乌龟棋盘
EN

Stack Overflow用户

提问于 2019-10-14 05:03:41

回答 1查看 277关注 0票数 0

我应该用python画一个棋盘游戏。但是，一旦我输入要求输入开始位置、宽度和高度的输入，它就会在主要棋盘矩形之外绘制黑色矩形。8 x 8矩形的网格必须用交替的黑/白矩形正确绘制。我做错了什么？我的第一个模块是这个：

from chessboard import *

def main():
    startX, startY = eval(input("Enter at start position (x, y): "))
    width = input("Enter the width: ")
    height = input("Enter the height: ")
    spaceX = eval(width) / 8
    spaceY = eval(height) / 8

    def variables():
        global startX, startY, width, height, spaceX, spaceY, xLocation, yLocation

    if width == "" and height == "":
        drawChessboard(startX, startY)
    elif height == "":
        drawChessboard(startX, startY, width=eval(width))
    elif width == "":
        drawChessboard(startX, startY, height=eval(height))
    else:
        drawChessboard(startX, startY, eval(width), eval(height))
main()

这是我的第二个模块chessboard.py

import turtle

def drawRectangle(xLocation, yLocation, spaceX, spaceY):

    turtle.penup()
    turtle.goto(xLocation, yLocation)
    turtle.pendown()

    turtle.begin_fill()

    for _ in range(2):
        turtle.forward(spaceX)
        turtle.left(90)
        turtle.forward(spaceY)
        turtle.left(90)

    turtle.end_fill()

def drawAllRectangles(startX, startY, width, height):

    spaceX = width / 8
    spaceY = height / 8

    yLocation = startY

    while yLocation <= (height - 2 * spaceY): 
        xLocation = startX
        while xLocation <= (width - 2 * spaceX):
            drawRectangle(xLocation, yLocation, spaceX, spaceY)
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

    turtle.penup()
    turtle.goto(startX + spaceX, startY + spaceY)
    turtle.pendown()

    yLocation = startY + spaceY

    while yLocation <= (height - spaceY): 
        xLocation = startX + spaceX
        while xLocation <= (width - spaceX):
            drawRectangle(xLocation, yLocation, spaceX, spaceY)
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

def drawChessboard(startX, startY, width=250, height=250):


    turtle.penup()
    turtle.goto(startX, startY)
    turtle.pendown()

    for _ in range(2):
        turtle.forward(width)
        turtle.left(90)
        turtle.forward(height)
        turtle.left(90)

    drawAllRectangles(startX, startY, width, height)

def main():

    startX, startY = eval(input("Enter at start position (x, y): "))
    width = input("Enter the width: ")
    height = input("Enter the height: ")

    turtle.speed('fastest')

    if width == "" and height == "":
        drawChessboard(startX, startY)
    elif height == "":
        drawChessboard(startX, startY, width=int(width))
    elif width == "":
        drawChessboard(startX, startY, height=int(height))
    else:
        drawChessboard(startX, startY, int(width), int(height))

    turtle.done()

main()

我不知道问题是什么，也不知道为什么它会在主要棋盘矩形之外绘制矩形。

python

turtle-graphics

回答 1

Stack Overflow用户

发布于 2019-10-14 10:12:57

具体地说，我认为你的循环终止逻辑是不正确的；一般来说，我认为你把事情搞得太复杂了。而不是让drawAllRectanges()在两个不同的起点上做同一件事两次，我们可以让它做一次，但用不同的起点调用它两次(即下面新命名的drawRectangles() )。我对你的代码进行了修改：

import turtle

def drawRectangle(xLocation, yLocation, spaceX, spaceY):

    turtle.goto(xLocation, yLocation)

    turtle.begin_fill()

    for _ in range(2):
        turtle.forward(spaceX)
        turtle.left(90)
        turtle.forward(spaceY)
        turtle.left(90)

    turtle.end_fill()

def drawRectangles(startX, startY, width, height):

    endX, endY = startX + width - 1, startY + height - 1

    spaceX, spaceY = width / 8, height / 8

    yLocation = startY

    while yLocation < endY:
        xLocation = startX

        while xLocation < endX:
            drawRectangle(xLocation, yLocation, spaceX, spaceY)
            xLocation += 2 * spaceX

        yLocation += 2 * spaceY

def drawChessboard(startX, startY, width=250, height=250):

    turtle.penup()
    turtle.goto(startX, startY)
    turtle.pendown()

    for _ in range(2):
        turtle.forward(width)
        turtle.left(90)
        turtle.forward(height)
        turtle.left(90)

    turtle.penup()

    drawRectangles(startX, startY, width, height)

    drawRectangles(startX + width / 8, startY + height / 8, width, height)

def main():
    startX, startY = eval(input("Enter at start position (x, y): "))
    width = input("Enter the width: ")
    height = input("Enter the height: ")

    turtle.speed('fastest')

    if width == "" and height == "":
        drawChessboard(startX, startY)
    elif height == "":
        drawChessboard(startX, startY, width=float(width))
    elif width == "":
        drawChessboard(startX, startY, height=float(height))
    else:
        drawChessboard(startX, startY, float(width), float(height))

    turtle.hideturtle()
    turtle.mainloop()

main()

仍然存在的主要问题是您对eval()的使用--寻找另一种方法！( variables()函数是关于什么的？)

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/58367763

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