汇智学堂-python小游戏（井字游戏之十）

2.12处理边界提示
最后我们处理一下，单击在棋盘外时，给用户一个提示。下面是我们要做的事情。
1、正确理解边界的坐标值。
2、超出边界给出提示：请选择正确的落子位置。

实现代码如下：

if event.x<=100 or event.x>=700 or event.y<=100 or event.y>=700:
tkinter.messagebox.showinfo(‘提示’,“请选择正确的落子位置！”)
return

将代码整合起来，整合后完整代码如下：

#-- coding:GBK --

from tkinter import *
import time

import tkinter.messagebox #messagebox

tk = Tk()
tk.title(“雷雷的井字游戏”)
tk.resizable(0, 0)
tk.wm_attributes("-topmost", 1)
canvas = Canvas(tk, width=800, height=800, bd=0, highlightthickness=0)
canvas.pack()
tk.update()

redorgreen=0
colorx=“green”

overornot=0

position=[0,0,0,0,0,0,0,0,0]

#画棋盘
canvas.create_line(100,100,700,100)
canvas.create_line(100,300,700,300)
canvas.create_line(100,500,700,500)
canvas.create_line(100,700,700,700)

canvas.create_line(100,100,100,700)
canvas.create_line(300,100,300,700)
canvas.create_line(500,100,500,700)
canvas.create_line(700,100,700,700)

def action(event):
global redorgreen
global colorx
global overornot

if overornot==1:
   tkinter.messagebox.showinfo('提示',"游戏已结束！")
   return
if event.x<=100 or event.x>=700 or event.y<=100 or event.y>=700:
   tkinter.messagebox.showinfo('提示',"请选择正确的落子位置！")
   return      

#if redorgreen0 and event.x>100 and event.x<300 and event.y<300 and event.y>100:
# canvas.create_oval(100, 100, 300, 300, fill =colorx )
if redorgreen2:
return
if redorgreen==0:
redorgreen=1
colorx=“red”
else :
redorgreen=0
colorx=“green”
#tkinter.messagebox.showinfo(‘提示’,redorgreen)

if event.x>100 and event.x<300 and event.y<300 and event.y>100:
    if position[0]==0:
        canvas.create_oval(100, 100, 300, 300, fill =colorx )
        if colorx=="red":
           position[0]=1
        else:
           position[0]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
    #winyesorno()
if event.x>300 and event.x<500 and event.y<300 and event.y>100:
    if position[1]==0:
        canvas.create_oval(300, 100, 500, 300, fill =colorx )
        if colorx=="red":
           position[1]=1
        else:
           position[1]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
if event.x>500 and event.x<700 and event.y<300 and event.y>100:
    if position[2]==0:
        canvas.create_oval(500, 100, 700, 300, fill =colorx )
        if colorx=="red":
           position[2]=1
        else:
           position[2]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return  

if event.x>100 and event.x<300 and event.y<500 and event.y>300:
    if position[3]==0:
        canvas.create_oval(100, 300, 300, 500, fill =colorx )
        if colorx=="red":
           position[3]=1
        else:
           position[3]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return  
    

if event.x>300 and event.x<500 and event.y<500 and event.y>300:
    if position[4]==0:
        canvas.create_oval(300, 300, 500, 500, fill =colorx )
        if colorx=="red":
           position[4]=1
        else:
           position[4]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return

if event.x>500 and event.x<700 and event.y<500 and event.y>300:
    if position[5]==0:
        canvas.create_oval(500, 300, 700, 500, fill =colorx )
        if colorx=="red":
           position[5]=1
        else:
           position[5]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
    
if event.x>100 and event.x<300 and event.y<700 and event.y>500:
    if position[6]==0:
        canvas.create_oval(100, 500, 300, 700, fill =colorx )
        if colorx=="red":
           position[6]=1
        else:
           position[6]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
    
if event.x>300 and event.x<500 and event.y<700 and event.y>500:
    if position[7]==0:
        canvas.create_oval(300, 500, 500, 700, fill =colorx )
        if colorx=="red":
           position[7]=1
        else:
           position[7]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
    
if event.x>500 and event.x<700 and event.y<700 and event.y>500:
    if position[8]==0:
        canvas.create_oval(500, 500, 700, 700, fill =colorx )
        if colorx=="red":
           position[8]=1
        else:
           position[8]=2
    else:
        tkinter.messagebox.showinfo('提示',"已有棋子了")
        if redorgreen==1:
           redorgreen=0
        else:
           redorgreen=1
           return
       
if position[0]==position[1] and position[1]==position[2]:
    if position[0]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[0]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1
if position[0]==position[3] and position[3]==position[6]:
    if position[0]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[0]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1
if position[0]==position[4] and position[4]==position[8]:
    if position[0]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[0]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1

if position[8]==position[7] and position[7]==position[6]:
    if position[8]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[8]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1
if position[8]==position[5] and position[5]==position[2]:
    if position[8]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[8]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1

if position[6]==position[4] and position[4]==position[2]:
    if position[4]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[4]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1

if position[3]==position[4] and position[4]==position[5]:
    if position[3]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[3]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1

if position[1]==position[4] and position[4]==position[7]:
    if position[1]==1:
        tkinter.messagebox.showinfo('提示',"红方获胜")
        overornot=1
    if position[1]==2:
        tkinter.messagebox.showinfo('提示',"绿方获胜")
        overornot=1

def action2(event):
global redorgreen
redorgreen=2
canvas.clear()
#action(event)

canvas.bind(’’, action)
#canvas.bind(’’, action2)

#提示
#tkinter.messagebox.showinfo(‘提示’,‘红方获胜’)

while 1:
#tk.update_idletasks()
tk.update()
time.sleep(0.01)

运行这段代码，当我们点击棋盘外时，出现提示：请选择正确的落子位置。见图2-18

图2-18