按钮不显示计时器

如何解决按钮不显示计时器

我正在为我 4 岁的侄子制作一个小游戏。你将两个鼠标插入电脑并尝试按下你的按钮，我需要开始按钮变成一个计时器。问题是按钮没有显示时间。它停止响应，直到时间到，然后显示“1”。 （请记住这是未完成的）

import tkinter
from tkinter import ttk
import time
score = 0
window = tkinter.Tk()
window.geometry("300x200")

def button1():
    score = score - 1

def button2():
    score = score + 1

def Start():
    t = 30
    while t > 0: 
        mins,secs = divmod(t,60) 
        timer = '{:02d}:{:02d}'.format(mins,secs)
        start.config(text=t)
        print(timer,end="\r")
        time.sleep(1)  
        t -= 1 

            

start = ttk.Button( window,text = "Start",command = Start)
start.pack(padx= 2,pady = 1)


one = ttk.Button( window,text = "Player 1",command = button1)
one.pack(padx= 2,pady = 1)



two = ttk.Button( window,text = "Player 2",command = button2)
two.pack(padx= 2,pady = 1)

window.mainloop()

解决方法

Here 是关于 tkinter 主循环的 while 循环不可消化性的答案。

您也可以通过在自己的线程中运行 start() 函数来解决此问题：

import threading

def start():
    t = 30
    while t > 0:
        mins,secs = divmod(t,60)
        timer = '{:02d}:{:02d}'.format(mins,secs)
        start_button.config(text=t)
        print(timer,end="\r")
        time.sleep(1)
        t -= 1


def start_in_thread():
    thread = threading.Thread(target=start)
    thread.daemon = True # forces thread to close when the tkinter mainloop is closed
    thread.start()


start_button = ttk.Button(window,text="Start",command=start_in_thread)

另一个问题是您的 buttonX() 函数在没有 global 关键字的情况下更改了全局变量 score：

def button1():
    global score
    score = score - 1

,

您只需删除 while 并将其替换为对 after 的调用。我还稍微清理了您的脚本，并解决了您将来会遇到的问题。像其他答案状态一样使用 threading 是矫枉过正。您只需要停止使用 mainloop 阻止 while。

import tkinter as tk

window = tk.Tk()
window.geometry("300x200")

_PLAYTIME = 10

t,score = _PLAYTIME,0

def tally(i):
    global score
    score += i

start = tk.Button(window,text="Start")
start.pack(padx= 2,pady = 1)

tk.Button(window,text="Player 1",command=lambda: tally(1)).pack(padx=2,pady=1)
tk.Button(window,text="Player 2",command=lambda: tally(-1)).pack(padx=2,pady=1)

def game():
    global t,score
    if t > 0: 
        timer = '{:02d}:{:02d}'.format(*divmod(t,60))
        start.config(text=f'Time: {timer} | Score: {score}')
        t -= 1
        start.after(1000,game)
    else:
        start.config(text=f'Score: {score} | Start')
        t,0
        
start.configure(command=game)

window.mainloop()

这是完全相同的游戏，但我认为 4 岁的孩子喜欢东西...... ;）。我还添加了一个 3-2-1-Go！按开始后倒计时这样，按开始的人不会失去优势。红色和绿色矩形是您的点击区域。红色减，绿色加。

我不确定您是否为此做好了准备，但是，将 2 个鼠标插入同一台计算机不会给您 2 个指示。也许那是你游戏的一部分~为了鼠标控制而与一个 4 岁的孩子战斗：D。如果不是，您将需要 TeamPlayer 或类似的东西。或者您可以简单地使用 bind 键盘键而不是鼠标。

import tkinter as tk

root = tk.Tk()
root.geometry("800x640")
root.title('CLICKFIGHT')

#seconds to play and player handicaps 
_PLAYTIME  = 10
_HANDICAP1 = 0
_HANDICAP2 = 0

#time,score,countdown
t,s,cd = _PLAYTIME,3

#gameboard
board = tk.Canvas(root,highlightthickness=0,width=800,height=640)
board.pack()

#score adjuster
def tally(i):
    global s
    s += i

#gameboard elements    
player1 = board.create_rectangle(0,400,600,fill="#ff0000")
player2 = board.create_rectangle(400,800,fill="#00ff00")
timer   = board.create_text(200,50,font='Helvetica 40 bold',fill='#ffffff')
score   = board.create_text(600,fill='#ffffff')
button  = board.create_rectangle(0,640,fill="#0000ff",tag="button")
start   = board.create_text(400,620,font='Helvetica 20 bold',fill='#ffffff',text="START",tag="button")
cdown   = board.create_text(400,300,font='Helvetica 80 bold',fill='#ffffff')

#game countdown
def countdown():
    global cd,p
    #so you can't click start again
    board.tag_unbind("button",'<1>')
    if cd > 0:
        board.itemconfig(cdown,text=cd)
        cd-=1
        root.after(800,countdown)
    else:
        board.itemconfig(cdown,text='GO!')
        root.after(200,game)
        cd = 3

#actual game
def game():
    global t,s
    #game stats
    board.itemconfig(timer,text='Time:\t{:02d}:{:02d}'.format(*divmod(t,60)))
    board.itemconfig(score,text=f'Score:\t{s}')
    board.itemconfig(start,text='PLAYING...')
    if t > 0: 
        #game looping
        t -= 1
        root.after(1000,game)
        board.itemconfig(cdown,text='')
    else:
        #reset everything
        t,s = _PLAYTIME,0
        board.itemconfig(start,text='START')
        board.itemconfig(cdown,text='GAME OVER')
        board.tag_bind("button",'<1>',lambda e: countdown())

#mouse events
board.tag_bind(player1,lambda e: tally(-(1+_HANDICAP1)))
board.tag_bind(player2,lambda e: tally(1+_HANDICAP2))
board.tag_bind("button",lambda e: countdown())

root.mainloop()