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Added CrapsGame class.

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Implemented playing the game but it doesn't work properly yet.
This commit is contained in:
rbamforth
2021-04-12 23:17:37 +01:00
parent 815dc4ae72
commit 25f8f3bb3f
4 changed files with 179 additions and 71 deletions
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72
29 Craps/csharp/Craps/Craps/CrapsGame.cs Normal file
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@@ -0,0 +1,72 @@
namespace Craps
{
public enum Result
{
// It's not used in this program but it's often a good idea to include a "none"
// value in an enum so that you can set an instance of the enum to "invalid" or
// initialise it to "none of the valid values".
noResult,
naturalWin,
snakeEyesLoss,
naturalLoss,
pointLoss,
pointWin,
};
class CrapsGame
{
private readonly UserInterface ui;
public CrapsGame(ref UserInterface ui)
{
this.ui = ui;
}
public Result Play(out int diceRoll)
{
var dice1 = new Dice();
var dice2 = new Dice();
diceRoll = dice1.Roll() + dice2.Roll();
if (Win(diceRoll))
{
return Result.naturalWin;
}
else if (Lose(diceRoll))
{
return (diceRoll == 2) ? Result.snakeEyesLoss : Result.naturalLoss;
}
else
{
var point = diceRoll;
ui.Point(point);
while (true)
{
var newRoll = dice1.Roll() + dice2.Roll();
if (newRoll == point)
{
return Result.pointWin;
}
else if (newRoll == 7)
{
return Result.pointLoss;
}
ui.NoPoint(diceRoll);
}
}
}
private bool Lose(int diceRoll)
{
return diceRoll == 2 || diceRoll == 3 || diceRoll == 12;
}
private bool Win(int diceRoll)
{
return diceRoll == 7 || diceRoll == 11;
}
}
}

78
29 Craps/csharp/Craps/Craps/Program.cs
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@@ -1,4 +1,4 @@
using System;
using System.Diagnostics;
@@ -6,21 +6,10 @@ namespace Craps
{
class Program
{
enum Result
{
naturalWin,
snakeEyesLoss,
loss,
pointLoss,
pointWin,
};
static void Main(string[] args)
{
var dice1 = new Dice();
var dice2 = new Dice();
var ui = new UserInterface();
var game = new CrapsGame(ref ui);
int winnings = 0;
ui.Intro();
@@ -28,56 +17,33 @@ namespace Craps
do
{
var bet = ui.PlaceBet();
var diceRoll = dice1.Roll() + dice2.Roll();
bool isWinner = false;
var result = game.Play(out int diceRoll);
if (Win(diceRoll))
switch (result)
{
winnings += bet;
isWinner = true;
}
else if (Lose(diceRoll))
{
winnings -= bet;
isWinner = false;
}
else
{
var point = diceRoll;
ui.Point(point);
case Result.naturalWin:
winnings += bet;
break;
while (true)
{
var newRoll = dice1.Roll() + dice2.Roll();
if (newRoll == point)
{
winnings += bet;
isWinner = true;
break;
}
else if (newRoll == 7)
{
winnings -= bet;
isWinner = false;
break;
}
case Result.naturalLoss:
case Result.snakeEyesLoss:
case Result.pointLoss:
winnings -= bet;
break;
ui.RollAgain();
}
case Result.pointWin:
winnings += (2 * bet);
break;
// Include a default so that we will be warned if the values of the enum
// ever change and we forget to add code to handle the new value.
default:
Debug.Assert(false); // We should never get here.
break;
}
ui.ShowResult(isWinner, bet);
ui.ShowResult(result, diceRoll, bet);
} while (ui.PlayAgain(winnings));
}
private static bool Lose(int diceRoll)
{
throw new NotImplementedException();
}
private static bool Win(int diceRoll)
{
throw new NotImplementedException();
}
}
}

98
29 Craps/csharp/Craps/Craps/UserInterface.cs
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@@ -1,40 +1,110 @@
using System;
using System.Diagnostics;
namespace Craps
{
public class UserInterface
public class UserInterface
{
public UserInterface()
{
}
public void Intro()
{
Console.WriteLine(" CRAPS");
Console.WriteLine(" CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n\n\n");
Console.WriteLine("2,3,12 ARE LOSERS; 4,5,6,8,9,10 ARE POINTS; 7,11 ARE NATURAL WINNERS.");
// In the original game a random number would be generated and then thrown away for as many
// times as the number the user entered. This is presumably something to do with ensuring
// that different random numbers will be generated each time the program is run.
//
// This is not necessary in C#; the random number generator uses the time as a seed so the
// results will always be different every time it is run.
//
// So that the game exactly matches the original game we ask the question but then ignore the
// answer.
Console.WriteLine("PICK A NUMBER AND INPUT TO ROLL DICE");
GetInt();
}
public int PlaceBet()
public int PlaceBet()
{
return 0;
Console.WriteLine("INPUT THE AMOUNT OF YOUR WAGER.");
int n = GetInt();
Console.WriteLine("I WILL NOW THROW THE DICE");
return n;
}
public bool PlayAgain(int bet)
{
throw new NotImplementedException();
// Goodness knows why we have to enter 5 to play
// again but that's what the original game asked.
Console.WriteLine("IF YOU WANT TO PLAY AGAIN PRINT 5 IF NOT PRINT 2");
return GetInt() == 5;
}
internal void ShowResult(bool isWinner, int winnings)
public void NoPoint(int diceRoll)
{
throw new NotImplementedException();
Console.WriteLine($"{diceRoll} - NO POINT. I WILL ROLL AGAIN ");
}
internal void RollAgain()
public void Point(int point)
{
throw new NotImplementedException();
Console.WriteLine($"{point} IS THE POINT. I WILL ROLL AGAIN");
}
internal void Point(int point)
public void ShowResult(Result result, int diceRoll, int bet)
{
throw new NotImplementedException();
switch (result)
{
case Result.naturalWin:
Console.WriteLine($"{diceRoll} - NATURAL....A WINNER!!!!");
Console.WriteLine($"{diceRoll} PAYS EVEN MONEY, YOU WIN {bet} DOLLARS");
break;
case Result.naturalLoss:
Console.WriteLine($"{diceRoll} - CRAPS...YOU LOSE.");
Console.WriteLine($"YOU LOSE {bet} DOLLARS.");
break;
case Result.snakeEyesLoss:
Console.WriteLine($"{diceRoll} - SNAKE EYES....YOU LOSE.");
Console.WriteLine($"YOU LOSE {bet} DOLLARS.");
break;
case Result.pointLoss:
Console.WriteLine($"{diceRoll} - CRAPS. YOU LOSE.");
Console.WriteLine($"YOU LOSE ${bet}");
break;
case Result.pointWin:
Console.WriteLine($"{diceRoll} - A WINNER.........CONGRATS!!!!!!!!");
Console.WriteLine($"AT 2 TO 1 ODDS PAYS YOU...LET ME SEE... {2 * bet} DOLLARS");
break;
// Include a default so that we will be warned if the values of the enum
// ever change and we forget to add code to handle the new value.
default:
Debug.Assert(false); // We should never get here.
break;
}
}
private int GetInt()
{
while (true)
{
string input = Console.ReadLine();
if (int.TryParse(input, out int n))
{
return n;
}
else
{
Console.WriteLine("ENTER AN INTEGER");
}
}
}
}
}

2
29 Craps/csharp/Craps/CrapsTester/CrapsTests.cs
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@@ -1,5 +1,5 @@
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Craps;
using Microsoft.VisualStudio.TestTools.UnitTesting;