python – 移动椭圆形的棋盘代码

发布时间：2020-12-20 13:05:40 所属栏目：Python 来源：网络整理

导读：我正在为大学做一个 python跳棋游戏.我使用tk绘制了电路板,但我似乎无法为这些部件实现移动功能.如果有人在我的代码中看到任何错误,或者可以提供帮助,我将不胜感激.这是完整的来源.提前致谢. 我知道这会吸引棋子.我不知道如何重新绘制碎片,而不删除其他碎片.

我正在为大学做一个 python跳棋游戏.我使用tk绘制了电路板,但我似乎无法为这些部件实现移动功能.如果有人在我的代码中看到任何错误,或者可以提供帮助,我将不胜感激.这是完整的来源.提前致谢.

我知道这会吸引棋子.我不知道如何重新绘制碎片,而不删除其他碎片.我已经在线查看了移动功能,并尝试了简单的测试,但我无法在我的代码中使用它.

我知道递归,但是,在实现更多功能之前,我需要基本功能才能工作,即实际在屏幕上移动一块.

lst2 = []

#counter variable
i=0

#board variable is what stores the X/O/- values.
# It's a 2D list. We iterate over it,looking to see
# if there is a value that is X or O. If so,we draw
# text to the screen in the appropriate spot (based on
# i and j.
while i < len(board):
  j=0
  while j < len(board[i]):

    if board[i][j] == 2:
      lst2.append(canvas.create_oval((i+1)*width + width/2 + 15,(j+1)*height + height/2 +15,(i+1)*width + width/2 - 15,(j+1)*width + width/2 - 15,fill="Red",outline='Black'))
    elif board[i][j] == 4:
      lst2.append(canvas.create_oval((i+1)*width + width/2 + 15,outline='Black'))
    elif board[i][j] == 1:
      lst2.append(canvas.create_oval((i+1)*width + width/2 + 15,fill="Black",outline='Black'))
    elif board[i][j] == 3:
      lst2.append(canvas.create_oval((i+1)*width + width/2 + 15,outline='Black'))

    j+=1

  i+=1

解决方法

您可以使用 coords和/或 move方法在画布上移动项目,以将坐标从它们更改为您希望的坐标.

这是一个简单的示例,展示如何在画布上创建和移动项目：

import Tkinter as tk

class Example(tk.Frame):
    '''Illustrate how to drag items on a Tkinter canvas'''

    def __init__(self,parent):
        tk.Frame.__init__(self,parent)

        # create a canvas
        self.canvas = tk.Canvas(width=400,height=400)
        self.canvas.pack(fill="both",expand=True)

        # this data is used to keep track of an 
        # item being dragged
        self._drag_data = {"x": 0,"y": 0,"item": None}

        # create a couple of movable objects
        self._create_token((100,100),"white")
        self._create_token((200,"black")

        # add bindings for clicking,dragging and releasing over
        # any object with the "token" tag
        self.canvas.tag_bind("token","<ButtonPress-1>",self.on_token_press)
        self.canvas.tag_bind("token","<ButtonRelease-1>",self.on_token_release)
        self.canvas.tag_bind("token","<B1-Motion>",self.on_token_motion)

    def _create_token(self,coord,color):
        '''Create a token at the given coordinate in the given color'''
        (x,y) = coord
        self.canvas.create_oval(x-25,y-25,x+25,y+25,outline=color,fill=color,tags="token")

    def on_token_press(self,event):
        '''Begining drag of an object'''
        # record the item and its location
        self._drag_data["item"] = self.canvas.find_closest(event.x,event.y)[0]
        self._drag_data["x"] = event.x
        self._drag_data["y"] = event.y

    def on_token_release(self,event):
        '''End drag of an object'''
        # reset the drag information
        self._drag_data["item"] = None
        self._drag_data["x"] = 0
        self._drag_data["y"] = 0

    def on_token_motion(self,event):
        '''Handle dragging of an object'''
        # compute how much the mouse has moved
        delta_x = event.x - self._drag_data["x"]
        delta_y = event.y - self._drag_data["y"]
        # move the object the appropriate amount
        self.canvas.move(self._drag_data["item"],delta_x,delta_y)
        # record the new position
        self._drag_data["x"] = event.x
        self._drag_data["y"] = event.y

if __name__ == "__main__":
    root = tk.Tk()
    Example(root).pack(fill="both",expand=True)
    root.mainloop()

（编辑：李大同）

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