如何更改定义中的变量?我在网上搜索过,但找不到对我有帮助的东西。我发现全局变量可能有帮助,但我不知道如何使用它们,我还有一个问题,我的代码甚至对我的“空格键”没有反应。这是我的完整代码,我知道他们不会写你所有的代码,但也许这会帮助你,因为我甚至不明白什么是重要的,什么不是。(我知道我不应该一起使用tkinter和pygame,但我懒得代码,我只是一个noob,只知道tkinter)。你知道吗
from pygame import *
import pygame as pygame
from tkinter import *
import tkinter as tk
from time import sleep
#---------------------------------------
HEIGHT = 500
WIDTH = 500
window = Tk()
window.title("Test")
canvas = Canvas(window, width=WIDTH, height=HEIGHT, bg="grey")
canvas.pack(expand=False)
#---------------------------------------
a = (5, 5)
b = (85, 85)
c = (415, 415)
d = (495, 495)
e = (5, 415)
f = (85, 495)
player = canvas.create_rectangle([a, b], tags="obj1Tag", fill = "red4")
finish = canvas.create_rectangle([c, d], tags="obj2Tag", fill = "green4")
arrow = canvas.create_rectangle([e, f], tags="obj3Tag", fill = "blue4")
#---------------------------------------
mainloopon = True
start = False
start2 = False
startwindow = True
pms = 0.015625
arrow_direction = ("None")
#---------------------------------------
def start(event):
start = True
print ("start")
canvas.bind('<space>', start)
#---------------------------------------
colors = {"red":"blue4",
"blue4":"yellow",
"yellow":"green",
"green":"red"}
def onObjectClick(event):
current_color = canvas.itemcget(arrow, "fill")
print (canvas.itemconfig(arrow, "fill"))
canvas.itemconfig(arrow, fill=colors[current_color])
canvas.tag_bind(arrow, '<ButtonPress-1>', onObjectClick)
#---------------------------------------
while mainloopon == True:
if startwindow == True:
window.update()
if start2 == True:
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'blue4'):
arrow_direction = ("right")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'red'):
arrow_direction = ("left")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'yellow'):
arrow_direction = ("up")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'green'):
arrow_direction = ("down")
if start == True:
canvas.move(player, 0, [pms])
window.update()
#sleep(0.0001)
playerc = canvas.coords(player)
arrowc = canvas.coords(arrow)
if playerc == arrowc:
start = False
start2 = True
if arrow_direction == ("right"):
canvas.move(player, [pms], 0)
window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("left"):
canvas.move(player, [-pms], 0)
window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("up"):
canvas.move(player, 0, [-pms])
window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("down"):
canvas.move(player, 0, [pms])
window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
window.mainloop()
编辑:
WIDTH = 500
window = Tk()
window.title("Test")
canvas = Canvas(window, width=WIDTH, height=HEIGHT, bg="grey")
canvas.pack(expand=False)
#---------------------------------------
a = (5, 5)
b = (85, 85)
c = (415, 415)
d = (495, 495)
e = (5, 415)
f = (85, 495)
player = canvas.create_rectangle([a, b], tags="obj1Tag", fill = "red4")
finish = canvas.create_rectangle([c, d], tags="obj2Tag", fill = "green4")
arrow = canvas.create_rectangle([e, f], tags="obj3Tag", fill = "blue4")
#---------------------------------------
mainloopon = True
start = False
start2 = False
startwindow = True
pms = 0.015625
arrow_direction = ("None")
#---------------------------------------
def change_start(event):
global start
start = True
print (start)
canvas.bind('<space>', change_start)
#---------------------------------------
colors = {"red":"blue4",
"blue4":"yellow",
"yellow":"green",
"green":"red"}
def onObjectClick(event):
current_color = canvas.itemcget(arrow, "fill")
print (canvas.itemconfig(arrow, "fill"))
canvas.itemconfig(arrow, fill=colors[current_color])
canvas.tag_bind(arrow, '<ButtonPress-1>', onObjectClick)
#---------------------------------------
while mainloopon == True:
if startwindow == True:
window.update()
if start2 == True:
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'blue4'):
arrow_direction = ("right")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'red'):
arrow_direction = ("left")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'yellow'):
arrow_direction = ("up")
if canvas.itemconfig(arrow, "fill") == ('fill', '', '', '', 'green'):
arrow_direction = ("down")
if start == True:
canvas.move(player, 0, [pms])
#window.update()
#sleep(0.0001)
playerc = canvas.coords(player)
arrowc = canvas.coords(arrow)
if playerc == arrowc:
start = False
start2 = True
if arrow_direction == ("right"):
canvas.move(player, [pms], 0)
#window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("left"):
canvas.move(player, [-pms], 0)
#window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("up"):
canvas.move(player, 0, [-pms])
#window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
if arrow_direction == ("down"):
canvas.move(player, 0, [pms])
#window.update()
#sleep(0.01)
playerc = canvas.coords(player)
finishc = canvas.coords(finish)
if playerc == finishc:
print ("Finished")
break
window.mainloop()
为您的陈述提供一些信息:
下面是一个简单的示例,说明如何从函数内部处理全局名称空间中的变量。你知道吗
我们需要在每个需要处理全局变量的函数中使用
global
标识符。你知道吗下一期:
这个问题与您有一个名为start的函数和一个变量有关。这不是个好主意。如果变量
start
不是函数的局部变量,那么还需要告诉函数在哪里查找它。您应该改为更改函数:收件人:
更新:
binds和canvas的一个问题是bind不能在绘制的对象上工作,除非绑定用于鼠标单击。它与
focus
在绘制对象上不可能有关。因此需要将空格键绑定到根窗口。或者画布所在的框架将在使用框架时起作用。你知道吗更改:
收件人:
这将解决你的问题与空格键。你知道吗
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