Merge pull request #205 from Tanjecterly/main

C# port of MathDice

61 Math Dice/csharp/GameState.cs

@@ -0,0 +1,8 @@
+namespace MathDice
+{
+    public enum GameState
+    {
+        FirstAttempt = 0,
+        SecondAttempt = 1,
+    }
+}

61 Math Dice/csharp/MathDice.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>MathDice</RootNamespace>
+  </PropertyGroup>
+
+</Project>

61 Math Dice/csharp/MathDice.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31025.194
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MathDice", "MathDice.csproj", "{4F28D7EB-3CD6-434F-B643-0CEA5F09F96D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4F28D7EB-3CD6-434F-B643-0CEA5F09F96D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4F28D7EB-3CD6-434F-B643-0CEA5F09F96D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4F28D7EB-3CD6-434F-B643-0CEA5F09F96D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4F28D7EB-3CD6-434F-B643-0CEA5F09F96D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A1337DCA-4EFA-45EE-A1A9-22E37E74F362}
+	EndGlobalSection
+EndGlobal

61 Math Dice/csharp/Program.cs

@@ -0,0 +1,121 @@
+using System;
+
+namespace MathDice
+{
+    public static class Program
+    {
+        readonly static Random random = new Random();
+
+        static int DieOne = 0;
+        static int DieTwo = 0;
+
+        private const string NoPips = "I     I";
+        private const string LeftPip = "I *   I";
+        private const string CentrePip = "I  *  I";
+        private const string RightPip = "I   * I";
+        private const string TwoPips = "I * * I";
+        private const string Edge = " ----- ";
+
+        static void Main(string[] args)
+        {
+            int answer;
+
+            GameState gameState = GameState.FirstAttempt;
+
+            Console.WriteLine("MATH DICE".CentreAlign());
+            Console.WriteLine("CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY".CentreAlign());
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine("THIS PROGRAM GENERATES SUCCESSIVE PICTURES OF TWO DICE.");
+            Console.WriteLine("WHEN TWO DICE AND AN EQUAL SIGN FOLLOWED BY A QUESTION");
+            Console.WriteLine("MARK HAVE BEEN PRINTED, TYPE YOUR ANSWER AND THE RETURN KEY.");
+            Console.WriteLine("TO CONCLUDE THE LESSON, TYPE CONTROL-C AS YOUR ANSWER.");
+            Console.WriteLine();
+            Console.WriteLine();
+
+            while (true)
+            {
+                if (gameState == GameState.FirstAttempt)
+                {
+                    Roll(ref DieOne);
+                    Roll(ref DieTwo);
+
+                    DrawDie(DieOne);
+                    Console.WriteLine("   +");
+                    DrawDie(DieTwo);
+                }
+
+                answer = GetAnswer();
+
+                if (answer == DieOne + DieTwo)
+                {
+                    Console.WriteLine("RIGHT!");
+                    Console.WriteLine();
+                    Console.WriteLine("THE DICE ROLL AGAIN...");
+
+                    gameState = GameState.FirstAttempt;
+                }
+                else
+                {
+                    if (gameState == GameState.FirstAttempt)
+                    {
+                        Console.WriteLine("NO, COUNT THE SPOTS AND GIVE ANOTHER ANSWER.");
+                        gameState = GameState.SecondAttempt;
+                    }
+                    else
+                    {
+                        Console.WriteLine($"NO, THE ANSWER IS{DieOne + DieTwo}");
+                        Console.WriteLine();
+                        Console.WriteLine("THE DICE ROLL AGAIN...");
+                        gameState = GameState.FirstAttempt;
+                    }
+                }
+            }
+        }
+
+        private static int GetAnswer()
+        {
+            int answer;
+
+            Console.Write("      =?");
+            var input = Console.ReadLine();
+
+            int.TryParse(input, out answer);
+
+            return answer;
+        }
+
+        private static void DrawDie(int pips)
+        {
+            Console.WriteLine(Edge);
+            Console.WriteLine(OuterRow(pips, true));
+            Console.WriteLine(CentreRow(pips));
+            Console.WriteLine(OuterRow(pips, false));
+            Console.WriteLine(Edge);
+            Console.WriteLine();
+        }
+
+        private static void Roll(ref int die) => die = random.Next(1, 7);
+
+        private static string OuterRow(int pips, bool top)
+        {
+            return pips switch
+            {
+                1 => NoPips,
+                var x when x == 2 || x == 3 => top ? LeftPip : RightPip,
+                _ => TwoPips
+            };
+        }
+
+        private static string CentreRow(int pips)
+        {
+            return pips switch
+            {
+                var x when x == 2 || x == 4 => NoPips,
+                6 => TwoPips,
+                _ => CentrePip
+            };
+        }
+    }
+}

61 Math Dice/csharp/README.md

@@ -1,3 +1,10 @@
 Original source downloaded [from Vintage Basic](http://www.vintage-basic.net/games.html)
 
 Conversion to [Microsoft C#](https://docs.microsoft.com/en-us/dotnet/csharp/)
+
+Conversion Notes
+
+- There are minor spacing issues which have been preserved in this port.
+- This implementation uses switch expressions to concisely place the dice pips in the right place.
+- Random() is only pseudo-random but perfectly adequate for the purposes of simulating dice rolls.
+- Console width is assumed to be 120 chars for the purposes of centrally aligned the intro text.

61 Math Dice/csharp/StringExtensions.cs

@@ -0,0 +1,15 @@
+namespace MathDice
+{
+    public static class StringExtensions
+    {
+        private const int ConsoleWidth = 120; // default console width
+
+        public static string CentreAlign(this string value)
+        {
+            int spaces = ConsoleWidth - value.Length;
+            int leftPadding = spaces / 2 + value.Length;
+
+            return value.PadLeft(leftPadding).PadRight(ConsoleWidth);
+        }
+    }
+}