68 lines
2.1 KiB
C#
68 lines
2.1 KiB
C#
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using OECS;
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namespace TicTacToe;
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/// <summary>
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/// Prints the board to the console.
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/// </summary>
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public class RenderSystem : ISystem
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{
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public QueryDescriptor Query { get; }
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public RenderSystem(World world)
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{
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Query = world.Query().With<Cell>().Build();
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}
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public void Run(World world)
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{
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ref var state = ref world.GetSingleton<GameState>();
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// Build a 3×3 grid.
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var grid = new char[3, 3];
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for (int r = 0; r < 3; r++)
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for (int c = 0; c < 3; c++)
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grid[r, c] = '.';
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// Fill in placed marks.
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var markQuery = world.Query().With<Cell>().With<Mark>().Build();
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world.ForEach(markQuery, (Entity entity, ref Cell cell, ref Mark mark) =>
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{
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grid[cell.Row, cell.Col] = mark.Player == Player.X ? 'X' : 'O';
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});
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Console.WriteLine();
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Console.WriteLine(" Tic-Tac-Toe");
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Console.WriteLine(" ═══════════");
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Console.WriteLine();
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Console.WriteLine(" 0 1 2");
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Console.WriteLine(" ┌───┬───┬───┐");
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for (int r = 0; r < 3; r++)
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{
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Console.Write($"{r} │");
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for (int c = 0; c < 3; c++)
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{
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Console.Write($" {grid[r, c]} ");
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if (c < 2) Console.Write("│");
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}
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Console.WriteLine("│");
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if (r < 2) Console.WriteLine(" ├───┼───┼───┤");
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}
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Console.WriteLine(" └───┴───┴───┘");
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Console.WriteLine();
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// Status line.
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var statusText = state.Status switch
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{
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GameStatus.Playing => $"{(state.CurrentPlayer == Player.X ? 'X' : 'O')}'s turn (move {state.MoveCount + 1})",
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GameStatus.XWon => "X wins!",
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GameStatus.OWon => "O wins!",
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GameStatus.Draw => "It's a draw!",
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_ => ""
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};
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Console.WriteLine($" {statusText}");
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Console.WriteLine();
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Console.Write(" Enter row col (e.g. \"1 2\"): ");
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}
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}
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