Merge pull request #58 from jessemcdowell/feature/74-csharp

Implement Rock Scissors Paper (Game 74) in C#

74 Rock Scissors Paper/csharp/Choice.cs

@@ -0,0 +1,19 @@
+namespace RockScissorsPaper
+{
+    public class Choice
+    {
+        public string Selector {get; private set; }
+        public string Name { get; private set; }
+        internal Choice CanBeat { get; set; }
+
+        public Choice(string selector, string name) {
+            Selector = selector;
+            Name = name;
+        }
+
+        public bool Beats(Choice choice)
+        {
+            return choice == CanBeat;
+        }
+    }
+}

74 Rock Scissors Paper/csharp/Choices.cs

@@ -0,0 +1,42 @@
+using System;
+
+namespace RockScissorsPaper
+{
+    public class Choices
+    {
+        public static readonly Choice Rock = new Choice("3", "Rock");
+        public static readonly Choice Scissors = new Choice("2", "Scissors");
+        public static readonly Choice Paper = new Choice("1", "Paper");
+
+        private static readonly Choice[] _allChoices;
+        private static readonly Random _random = new Random();
+
+        static Choices()
+        {
+            Rock.CanBeat = Scissors;
+            Scissors.CanBeat = Paper;
+            Paper.CanBeat = Rock;
+
+            _allChoices = new[] { Rock, Scissors, Paper };
+        }
+
+        public static Choice GetRandom()
+        {
+            return _allChoices[_random.Next(_allChoices.GetLength(0))];
+        }
+
+        public static bool TryGetBySelector(string selector, out Choice choice)
+        {
+            foreach (var possibleChoice in _allChoices)
+            {
+                if (string.Equals(possibleChoice.Selector, selector))
+                {
+                    choice = possibleChoice;
+                    return true;
+                }
+            }
+            choice = null;
+            return false;
+        }
+    }
+}

74 Rock Scissors Paper/csharp/Game.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Linq;
+
+namespace RockScissorsPaper
+{
+    public class Game
+    {
+        public int ComputerWins { get; private set; }
+        public int HumanWins { get; private set; }
+        public int TieGames { get; private set; }
+
+        public void PlayGame()
+        {
+            var computerChoice = Choices.GetRandom();
+            var humanChoice = GetHumanChoice();
+
+            Console.WriteLine("This is my choice...");
+            Console.WriteLine("...{0}", computerChoice.Name);
+
+            if (humanChoice.Beats(computerChoice))
+            {
+                Console.WriteLine("You win!!!");
+                HumanWins++;
+            }
+            else if (computerChoice.Beats(humanChoice))
+            {
+                Console.WriteLine("Wow!  I win!!!");
+                ComputerWins++;
+            }
+            else
+            {
+                Console.WriteLine("Tie game.  No winner.");
+                TieGames++;
+            }
+        }
+
+        public void WriteFinalScore()
+        {
+            Console.WriteLine();
+            Console.WriteLine("Here is the final game score:");
+            Console.WriteLine("I have won {0} game(s).", ComputerWins);
+            Console.WriteLine("You have one {0} game(s).", HumanWins);
+            Console.WriteLine("And {0} game(s) ended in a tie.", TieGames);
+        }
+
+        public Choice GetHumanChoice()
+        {
+            while (true)
+            {
+                Console.WriteLine("3=Rock...2=Scissors...1=Paper");
+                Console.WriteLine("1...2...3...What's your choice");
+                if (Choices.TryGetBySelector(Console.ReadLine(), out var choice))
+                    return choice;
+                Console.WriteLine("Invalid.");
+            }
+        }
+    }
+}

74 Rock Scissors Paper/csharp/Program.cs

@@ -0,0 +1,48 @@
+using System;
+
+namespace RockScissorsPaper
+{
+    static class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("GAME OF ROCK, SCISSORS, PAPER");
+            Console.WriteLine("CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY");
+            Console.WriteLine();
+            Console.WriteLine();
+            Console.WriteLine();
+
+            var numberOfGames = GetNumberOfGames();
+
+            var game = new Game();
+            for (var gameNumber = 1; gameNumber <= numberOfGames; gameNumber++) {
+                Console.WriteLine();
+                Console.WriteLine("Game number {0}", gameNumber);
+
+                game.PlayGame();
+            }
+
+            game.WriteFinalScore();
+
+            Console.WriteLine();
+            Console.WriteLine("Thanks for playing!!");
+        }
+
+        static int GetNumberOfGames()
+        {
+            while (true) {
+                Console.WriteLine("How many games");
+                if (int.TryParse(Console.ReadLine(), out var number))
+                {
+                    if (number < 11 && number > 0)
+                        return number;
+                    Console.WriteLine("Sorry, but we aren't allowed to play that many.");
+                }
+                else
+                {
+                    Console.WriteLine("Sorry, I didn't understand.");
+                }
+            }
+        }
+    }
+}

74 Rock Scissors Paper/csharp/RockScissorsPaper.csproj

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