【汇智学堂】-python系列小游戏（井字游戏之七）

2.9判断同一颜色的棋子三子成线
现在我们要在棋盘上同一方向上完成同一颜色三子成一线的判断。我们从一个方向开始。下面是我们要做的事情。
1、清楚三子成一线的本质，是位置状态相同。
2、位置状态相同，判断后提示：赢了

实现代码如下：

if event.x>100 and event.x<300 and event.y<500 and event.y>300:
    canvas.create_oval(100, 300, 300, 500, fill =colorx )
 if event.x>300 and event.x<500 and event.y<500 and event.y>300:
    canvas.create_oval(300, 300, 500, 500, fill =colorx )
if event.x>500 and event.x<700 and event.y<500 and event.y>300:
    canvas.create_oval(500, 300, 700, 500, fill =colorx )
if event.x>100 and event.x<300 and event.y<700 and event.y>500:
    canvas.create_oval(100, 500, 300, 700, fill =colorx )
if event.x>300 and event.x<500 and event.y<700 and event.y>500:
    canvas.create_oval(300, 500, 500, 700, fill =colorx )
if event.x>500 and event.x<700 and event.y<700 and event.y>500:
    canvas.create_oval(500, 500, 700, 700, fill =colorx )
    
if position[0]==position[1] and position[1]==position[2] and position[0]==1:
    tkinter.messagebox.showinfo('提示',"赢了")

    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

结合上面这段代码，理解position[0]=0、position[0]=1、position[0]=2三者的含义。position[0]=0代表当前位置无棋子，position[0]=1代表当前位置有红色棋子，position[0]=2代表当前位置有绿色棋子

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"

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

#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 yesorno():
    tkinter.messagebox.showinfo('提示',"提示1")
    if redorgreen==1:
       redorgreen=0
    else:
       redorgreen=1
    return

def action(event):
    global redorgreen
    global colorx

   #if redorgreen==0 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 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")
            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")
            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")
            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:
        canvas.create_oval(100, 300, 300, 500, fill =colorx )
    if event.x>300 and event.x<500 and event.y<500 and event.y>300:
        canvas.create_oval(300, 300, 500, 500, fill =colorx )
    if event.x>500 and event.x<700 and event.y<500 and event.y>300:
        canvas.create_oval(500, 300, 700, 500, fill =colorx )

    if event.x>100 and event.x<300 and event.y<700 and event.y>500:
        canvas.create_oval(100, 500, 300, 700, fill =colorx )
    if event.x>300 and event.x<500 and event.y<700 and event.y>500:
        canvas.create_oval(300, 500, 500, 700, fill =colorx )
    if event.x>500 and event.x<700 and event.y<700 and event.y>500:
        canvas.create_oval(500, 500, 700, 700, fill =colorx )
    
    if position[0]==position[1] and position[1]==position[2] and position[0]==1:
        tkinter.messagebox.showinfo('提示',"赢了")
        
canvas.bind('', action)

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

运行这段代码，3*3方格的第一行，如果都落下红色棋子时，就会提示：赢了。见图2-15

图2-15