Question

Need help with Intro to Comp Sci 2 (Python) problem:

Write a GUI class called Craps that implements the die game craps. This question asks you to write an event handler that deals with a single round of the game. To understand how to write the handler, you need to remember how the game works. It begins with the player throwing a pair of standard, six-sided dice. If the player rolls a 7 or 11 in the first round, the player wins. If the player rolls a 2, 3, or 12 in the first round, the player loses. For any other roll the player must roll again to determine whether he/she won. During subsequent rounds, the player wins if he/she rolls point, that is, rolls the same total as he/she did during the first round. During subsequent rounds, the player loses if he/she rolls a 7 In the template file find has all the methods completed except for the event handler play. The following is a description of the methods that are already written. None of these methods should be modified as you complete this question: a. init The constructor creates the main window, sets the title, calls the new game() method, and calls the make widgets0 method. b. new game: This method resets the first roll variable in the object. When the first roll is set to 0 it means that the player has just begun a new game. Once the player

This is what is provided:
(Copy/Paste version):

from tkinter import Tk, Label, Entry, Button
from random import *

class Craps(Tk):

#set up the main window
def __init__(self, parent=None):
Tk.__init__(self, parent)
self.title('Play Craps')
self.new_game()
self.make_widgets()

#when a new game is started, the firstRoll will start at 0
def new_game(self):
self.firstRoll = 0
  
#create and place the widgets in the window
def make_widgets(self):
Label(self, text="Die 1").grid(row=0, column=0, columnspan=1)
Label(self, text="Die 2").grid(row=0, column=1, columnspan=1)

self.die1Ent = Entry(self) #entry field for die 1
self.die2Ent = Entry(self) #entry field for die 2
self.die1Ent.grid(row=1, column=0, columnspan=1)
self.die2Ent.grid(row=1, column=1, columnspan=1)

Label(self, text="First roll").grid(row=2, column=0, columnspan=1)
Label(self, text="Result").grid(row=2, column=1, columnspan=1)

self.firstRollEnt = Entry(self) #entry field for the first roll
self.resultEnt = Entry(self) #entry field the result of the current roll
self.firstRollEnt.grid(row=3, column=0, columnspan=1)
self.resultEnt.grid(row=3, column=1, columnspan=1)

Button(self, text="Roll the dice!", command=self.play).grid(row=4, column=0)

#complete the implementation of play()
def play(self):
#replace pass with your solution

  

Craps().mainloop()

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(Screenshot version):

Answer 1

class Craps(Tk):
    'a GUI that plays craps'

    def __init__(self, parent=None):
        'constructor'
        Tk.__init__(self, parent)
        self.title("Play craps")
        self.new_game()
        self.make_widgets()

    def new_game(self):
        'reset the game'
        self.firstroll = 0
        
    def make_widgets(self):
        'define the Craps widgets'
        Label(self, text="Die 1").grid(row=0, column=0)
        Label(self, text="Die 2").grid(row = 0, column = 1)
        self.ent1 = Entry(self, justify = CENTER)
        self.ent1.grid(row = 1, column = 0)
        self.ent2 = Entry(self, justify = CENTER)
        self.ent2.grid(row = 1, column = 1)
        Label(self, text = "First roll").grid(row = 2, column = 0)
        self.first = Entry(self, justify = CENTER)
        self.first.grid(row = 3, column = 0)
        Label(self, text = "Result").grid(row = 2, column = 1)
        self.result = Entry(self, justify = CENTER)
        self.result.grid(row = 3, column = 1)
        Button(self, text="Roll the dice!", command = self.play).grid(row = 4, column = 0, columnspan = 2)

   
    def play(self):
        'the event handler'
        self.result.delete(0,END)
        roll1, roll2 = randrange(1,7), randrange(1,7)
        self.ent1.delete(0,END)
        self.ent2.delete(0,END)
        self.ent1.insert(END, roll1)
        self.ent2.insert(END, roll2)
        if self.firstroll == 0:
            self.first.delete(0,END)
            self.firstroll = roll1 + roll2
            self.first.insert(END, self.firstroll)
            if self.firstroll == 7:
                self.result.insert(END, 'You won! Play Again?')
                self.new_game()
            elif self.firstroll == 2 or self.firstroll == 3 or self.firstroll == 12:
                self.result.insert(END, 'You lost. Play Again?')
                self.new_game()
            else:
                self.result.insert(END, 'Roll Again')
    
        else:
            total = roll1 + roll2
            if total == 7:
                self.result.insert(END, 'You lost! Play Again?')
                self.new_game()
            elif total == self.firstroll:
                self.result.insert(END, 'You won! Play Again?')
                self.new_game()
            else:
                self.result.insert(END, 'Roll Again')