python - 当按下键盘上的按钮时，如何使方 block 移动？ Tkinter， python

Question

如何在按下键盘上的“d”按钮(例如)时让方 block 移动？

from tkinter import *
root = Tk()
root.title('Snake')
root["width"] = 400
root["height"] = 400

field = Canvas(root)

x = 0
y = 0

def snake(x, y):
    field.create_rectangle(10, 20, 30, 40)
    field.grid(row=x, column=y)
    x += 1
    y += 1
    return(x, y)


root.bind("<KeyPress>", snake(x=x, y=y))

root.mainloop()

Answer 1

一个简单的方法是使用 event.char。它返回按下的按钮的字符。然后检查它是哪个按钮，如果是 w,a,s,d -

则移动它

from tkinter import *
root = Tk()
root.title('Snake')
root["width"] = 400
root["height"] = 400

field = Canvas(root)
rect = field.create_rectangle(10, 20, 30, 40)
field.grid(row=0, column=0)

def snake(event):
    x = 0 # Default
    y = 0
    if event.char == 'w':
        y = -10

    if event.char == 'a':
        x = -10

    if event.char == 's':
        y = 10
    
    if event.char == 'd':
        x = 10

    field.move(rect,x,y)


root.bind("<Key>", snake)
root.mainloop()