init

2026-10-23 19:23:03 +02:00
parent 8c8240de63
commit 19428550ca
90 changed files with 6912 additions and 0 deletions
@@ -0,0 +1,63 @@
+namespace ActionBlocks.Game.Core;
+
+public interface IRotationSystem
+{
+    /// <summary>
+    /// Tries to rotate <paramref name="piece"/> by <paramref name="direction"/> (+1 = clockwise, -1 = counter-clockwise).
+    /// Returns the rotated piece and the index of the kick that was used, or null if no kick fits.
+    /// </summary>
+    (ActivePiece Piece, int KickIndex)? TryRotate(Board board, ActivePiece piece, int direction);
+}
+
+/// <summary>Standard rotation system with wall and floor kicks.</summary>
+public sealed class SuperRotationSystem : IRotationSystem
+{
+    // Kick tables use the conventional y-up notation and are flipped when applied.
+    private static readonly Dictionary<(int From, int To), Point[]> JlstzKicks = new()
+    {
+        [(0, 1)] = [new(0, 0), new(-1, 0), new(-1, 1), new(0, -2), new(-1, -2)],
+        [(1, 0)] = [new(0, 0), new(1, 0), new(1, -1), new(0, 2), new(1, 2)],
+        [(1, 2)] = [new(0, 0), new(1, 0), new(1, -1), new(0, 2), new(1, 2)],
+        [(2, 1)] = [new(0, 0), new(-1, 0), new(-1, 1), new(0, -2), new(-1, -2)],
+        [(2, 3)] = [new(0, 0), new(1, 0), new(1, 1), new(0, -2), new(1, -2)],
+        [(3, 2)] = [new(0, 0), new(-1, 0), new(-1, -1), new(0, 2), new(-1, 2)],
+        [(3, 0)] = [new(0, 0), new(-1, 0), new(-1, -1), new(0, 2), new(-1, 2)],
+        [(0, 3)] = [new(0, 0), new(1, 0), new(1, 1), new(0, -2), new(1, -2)],
+    };
+
+    private static readonly Dictionary<(int From, int To), Point[]> IKicks = new()
+    {
+        [(0, 1)] = [new(0, 0), new(-2, 0), new(1, 0), new(-2, -1), new(1, 2)],
+        [(1, 0)] = [new(0, 0), new(2, 0), new(-1, 0), new(2, 1), new(-1, -2)],
+        [(1, 2)] = [new(0, 0), new(-1, 0), new(2, 0), new(-1, 2), new(2, -1)],
+        [(2, 1)] = [new(0, 0), new(1, 0), new(-2, 0), new(1, -2), new(-2, 1)],
+        [(2, 3)] = [new(0, 0), new(2, 0), new(-1, 0), new(2, 1), new(-1, -2)],
+        [(3, 2)] = [new(0, 0), new(-2, 0), new(1, 0), new(-2, -1), new(1, 2)],
+        [(3, 0)] = [new(0, 0), new(1, 0), new(-2, 0), new(1, -2), new(-2, 1)],
+        [(0, 3)] = [new(0, 0), new(-1, 0), new(2, 0), new(-1, 2), new(2, -1)],
+    };
+
+    private static readonly Point[] NoKicks = [new(0, 0)];
+
+    public (ActivePiece Piece, int KickIndex)? TryRotate(Board board, ActivePiece piece, int direction)
+    {
+        var from = PieceDefinitions.Mod(piece.Rotation);
+        var to = PieceDefinitions.Mod(piece.Rotation + direction);
+        var kicks = piece.Type switch
+        {
+            PieceType.O => NoKicks,
+            PieceType.I => IKicks[(from, to)],
+            _ => JlstzKicks[(from, to)],
+        };
+
+        for (var i = 0; i < kicks.Length; i++)
+        {
+            var candidate = piece with { Rotation = to, X = piece.X + kicks[i].X, Y = piece.Y - kicks[i].Y };
+            if (board.Fits(candidate))
+            {
+                return (candidate, i);
+            }
+        }
+        return null;
+    }
+}