Question

我正在尝试在python中创建Connect 4，但我无法弄清楚如何获取屏幕的坐标点击以便我可以使用它们。现在，我想画板，然后有人点击，画一个点，然后回到while循环的顶部，擦拭屏幕再试一次。我尝试了几种不同的选择，但似乎没有一种方法适合我。

def play_game():
"""
When this function runs, allows the user to play a game of Connect 4
against another person
"""
turn = 1
is_winner = False
while is_winner == False:
    # Clears screen
    clear()
    # Draws empty board
    centers = draw_board()
    # Decides whose turn it is, change color appropriately
    if turn % 2 == 0:
        color = RED
    else:
        color = BLACK
    # Gets coordinates of click
    penup()
    onscreenclick(goto)
    dot(HOLE_SIZE, color)
    turn += 1

Answer 1

与其他答案一样善意，我也不相信解决实际问题。您通过在代码中引入无限循环来锁定事件：

is_winner = False
while is_winner == False:

您无法使用乌龟图形执行此操作 - 您设置了事件处理程序和初始化代码，但将控制权交给主循环事件处理程序。我的以下返工显示了您可能会这样做：

import turtle

colors = ["red", "black"]
HOLE_SIZE = 2

turn = 0
is_winner = False

def draw_board():
    pass
    return (0, 0)

def dot(color):
    turtle.color(color, color)
    turtle.stamp()

def goto(x, y):
    global turn, is_winner

    # add code to determine if we have a winner

    if not is_winner:
        # Clears screen
        turtle.clear()
        turtle.penup()

        # Draws empty board
        centers = draw_board()

        turtle.goto(x, y)

        # Decides whose turn it is, change color appropriately
        color = colors[turn % 2 == 0]
        dot(color)

        turn += 1
    else:
        pass

def start_game():
    """
    When this function runs, sets up a new
    game of Connect 4 against another person
    """

    global turn, is_winner

    turn = 1
    is_winner = False

    turtle.shape("circle")
    turtle.shapesize(HOLE_SIZE)

    # Gets coordinates of click
    turtle.onscreenclick(goto)

start_game()

turtle.mainloop()

运行它，您将看到所描述的所需行为。

Answer 2

我假设您在python中使用 Turtle （因此名称。）如果是这种情况，请点击以下链接：Turtle in python- Trying to get the turtle to move to the mouse click position and print its coordinates 我知道我知道。我讨厌只是链接答案和下一个人一样多。但是我发布链接的帖子可能会比我能更好地回答你的问题。

〜Mr.Python

Answer 3

假设您正在使用标题中提到的turtle：

>>> import turtle
>>> help(turtle.onscreenclick)

Help on function onscreenclick in module turtle:

onscreenclick(fun, btn=1, add=None)
    Bind fun to mouse-click event on canvas.

    Arguments:
    fun -- a function with two arguments, the coordinates of the
           clicked point on the canvas.
    num -- the number of the mouse-button, defaults to 1

    Example (for a TurtleScreen instance named screen)

    >>> onclick(goto)
    >>> # Subsequently clicking into the TurtleScreen will
    >>> # make the turtle move to the clicked point.
    >>> onclick(None)

这意味着您的回调函数（显然名为goto）将采用两个参数，即X和Y位置。

import turtle

def goto(x, y):
    print('Moving to {}, {}'.format(x,y))
    turtle.goto(x, y)

turtle.onscreenclick(goto)
turtle.goto(0,0)

您所做的每次点击都会将乌龟移动到其他位置。请注意turtle已经有一个事件循环 - 您不需要自己的一个。只需回复点击次数。

在Python中获取Turtle以识别点击事件

3 个答案: