json, slides

demos/Demo01/ConsoleApp/Program.cs

 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using System.Runtime.CompilerServices;
 using GameBrain;
 using GameConsoleUI;
@@ -13,18 +14,9 @@ namespace ConsoleApp
         static void Main(string[] args)
         {
             Console.WriteLine("=========> TIC-TAC-TOE AKAVER <================");
-            var menuB = new Menu(MenuLevel.Level2Plus);
-            menuB.AddMenuItem(new MenuItem("Sub 2.", "1", DefaultMenuAction));
-
-            var menuA = new Menu(MenuLevel.Level1);
-            menuA.AddMenuItem(new MenuItem("Go to submenu 2", "1", menuB.RunMenu));
-            menuA.AddMenuItem(new MenuItem("testing", "2", DefaultMenuAction));
 
             var menu = new Menu(MenuLevel.Level0);
-            menu.AddMenuItem(new MenuItem("Go to submenu 1", "s", menuA.RunMenu));
             menu.AddMenuItem(new MenuItem("New game human vs human. Pointless.", "1", TicTacToe));
-            menu.AddMenuItem(new MenuItem("New game puny human vs mighty AI", "2", DefaultMenuAction));
-            menu.AddMenuItem(new MenuItem("New game mighty AI vs superior AI", "3", DefaultMenuAction));
 
             menu.RunMenu();
         }
@@ -55,6 +47,17 @@ namespace ConsoleApp
                     return "";
                 })
             );
+            menu.AddMenuItem(new MenuItem(
+                $"Save game",
+                userChoice: "s",
+                () => { return SaveGameAction(game); })
+            );
+
+            menu.AddMenuItem(new MenuItem(
+                $"Load game",
+                userChoice: "l",
+                () => { return LoadGameAction(game); })
+            );
             menu.AddMenuItem(new MenuItem(
                 $"Exit game",
                 userChoice: "e",
@@ -78,34 +81,46 @@ namespace ConsoleApp
 
             return (x, y);
         }
-    }
 
-    public class Person
-    {
-        [AllowNull]
-        public string ScreenName
-        {
-            get => _screenName;
-            set => _screenName = value ?? GenerateRandomScreenName();
-        }
-        private string _screenName = GenerateRandomScreenName();
-        
-        [DisallowNull]
-        public string? ReviewComment
+        static string LoadGameAction(TicTacToe game)
         {
-            get => _comment;
-            set => _comment = value ?? throw new ArgumentNullException(nameof(value), "Cannot set to null");
-        }
-        string? _comment;
+            var files = System.IO.Directory.EnumerateFiles(".", "*.json").ToList();
+            for (int i = 0; i < files.Count; i++)
+            {
+                Console.WriteLine($"{i} - {files[i]}");
+            }
 
-        [return: MaybeNull]
-        public T Find<T>(IEnumerable<T> sequence, Func<T, bool> predicate)
-        {
+            var fileNo = Console.ReadLine();
+            var fileName = files[int.Parse(fileNo!.Trim())];
+
+            var jsonString = System.IO.File.ReadAllText(fileName);
+
+            game.SetGameStateFromJsonString(jsonString);
+            
+            TicTacToeConsoleUI.DrawBoard(game.GetBoard());
+            
+            return "";
         }
 
-        public void EnsureCapacity<T>([NotNull] ref T[]? storage, int size)
+        static string SaveGameAction(TicTacToe game)
         {
+            // 2020-10-12
+            var defaultName = "save_" + DateTime.Now.ToString("yyyy-MM-dd") + ".json";
+            Console.Write($"File name ({defaultName}):");
+            var fileName = Console.ReadLine();
+            if (string.IsNullOrWhiteSpace(fileName))
+            {
+                fileName = defaultName;
+            }
+
+            
+            var serializedGame = game.GetSerializedGameState();
+            
+            // Console.WriteLine(serializedGame);
+            System.IO.File.WriteAllText(fileName, serializedGame);
+            
+            return "";
         }
     }
-    
+
 }
\ No newline at end of file

demos/Demo01/GameBrain/CellState.cs

@@ -2,8 +2,8 @@ namespace GameBrain
 {
     public enum CellState
     {
-        Empty,
-        X,
-        O,
+        Empty, // = 0
+        X, // = 1
+        O, // = 2
     }
 }
\ No newline at end of file

demos/Demo01/GameBrain/GameBrain.csproj

@@ -4,4 +4,8 @@
         <TargetFramework>netstandard2.1</TargetFramework>
     </PropertyGroup>
 
+    <ItemGroup>
+      <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    </ItemGroup>
+
 </Project>

demos/Demo01/GameBrain/GameState.cs

+using System;
+
+namespace GameBrain
+{
+    public class GameState
+    {
+        public bool NextMoveByX { get; set; }
+        public CellState[][] Board { get; set; } = null!;
+        public int Width { get; set; }
+        public int Height { get; set; }
+    }
+}
\ No newline at end of file

demos/Demo01/GameBrain/TicTacToe.cs

 using System;
+using System.Text.Json;
 
 namespace GameBrain
 {
     // _, X, O, /X, /O
     public class TicTacToe
     {
-        private readonly CellState[,] _board = new CellState[3,3];
+        private CellState[,] _board = new CellState[3,3];
         private bool _nextMoveByX = true;
         
         public CellState[,] GetBoard()
@@ -28,8 +29,60 @@ namespace GameBrain
 
             return false;
         }
-        
+
+
+        public string GetSerializedGameState()
+        {
+            var state = new GameState
+            {
+                NextMoveByX = _nextMoveByX, 
+                Width = _board.GetLength(0), 
+                Height = _board.GetLength(1)
+            };
+            
+            state.Board = new CellState[state.Width ][];
+            
+            for (var i = 0; i < state.Board.Length; i++)
+            {
+                state.Board[i] = new CellState[state.Height];
+            }
+
+            for (var x = 0; x < state.Width; x++)
+            {
+                for (var y = 0; y < state.Height; y++)
+                {
+                    state.Board[x][y] = _board[x, y];
+                }
+            }
+
+            var jsonOptions = new JsonSerializerOptions()
+            {
+                 WriteIndented = true
+            };
+            return JsonSerializer.Serialize(state, jsonOptions);
+            
+        }
+
+        public void SetGameStateFromJsonString(string jsonString)
+        {
+            var state = JsonSerializer.Deserialize<GameState>(jsonString);
+            
+            // restore actual state from deserialized state
+            _nextMoveByX = state.NextMoveByX;
+            _board =  new CellState[state.Width, state.Height];
+            
+            for (var x = 0; x < state.Width; x++)
+            {
+                for (var y = 0; y < state.Height; y++)
+                {
+                    _board[x, y] = state.Board[x][y];
+                }
+            }
+            
+        }
     }
     
     
+    
+    
 }
\ No newline at end of file