connect4

commit 9aaee4de53df1a61d74042639d695bda578b3496
parent 599029950fec9bc8f199875cd9d2d701639144f6
Author: sej <sej@sejdt.localhost>
Date:   Fri,  4 Oct 2024 23:21:51 +0200

Added another constructor used in Minimax + empty list is now returned for LegalMoves() on finished board.

Diffstat:
M
Board.cs
 | 
33
+++++++++++++++++++++++++++------

1 file changed, 27 insertions(+), 6 deletions(-)
diff --git a/Board.cs b/Board.cs
@@ -24,7 +24,7 @@ public class Board {
     }
 
     /*
-     * Constructs a board with m rows and n columns.
+     * Constructs a new board with m rows and n columns.
      */
     public Board( int n, int m ) {
         _m = m;
@@ -36,6 +36,25 @@ public class Board {
     }
 
     /*
+     * Constructs a new board with the given board
+     */
+    public Board( Board board ) {
+        _m = board._m;
+        _n = board._n;
+        _board = new Cell[ _m, _n ];
+        _height = new int[ _n ];
+        // why does it have to be so difficult to deep copy a 2d array?
+        for ( int j = 0; j < _m; j ++ ) {
+            for ( int i = 0; i < _n; i ++ ) {
+                _board[ j, i ] = board._board[ j, i ];
+            }
+        }
+        board._height.CopyTo( _height, 0 );
+        _next = board._next;
+        _status = board._status;
+    }
+
+    /*
      * Determines if it is legal to play a piece in the given column
      */
     public bool IsLegal( int column ) {
@@ -64,13 +83,13 @@ public class Board {
      */
     public void PrettyPrint() {
         char[] prettyChar = { '.', 'X', 'O' };
+        Console.WriteLine( $"{ _status }:" );
         for ( int j = 0; j < _m; j++ ) {
             for ( int i = 0; i < _n; i++ ) {
-                Console.Write( prettyChar[ (int) _board[ j, i ] ] );
+                Console.Write( $" { prettyChar[ (int) _board[ j, i ] ] } " );
             }
             Console.Write( "\n" );
         }
-        Console.WriteLine( _status );
     }
 
     /*
@@ -78,9 +97,11 @@ public class Board {
      */
     public List< int > LegalMoves() {
         List< int > legalMoves = new List< int >();
-        for ( int i = 0; i < _m; i ++ ) {
-            if ( IsLegal( i ) ) {
-                legalMoves.Add( i );
+        if ( _status == Status.InProgress ) {
+            for ( int i = 0; i < _n; i ++ ) {
+                if ( IsLegal( i ) ) {
+                    legalMoves.Add( i );
+                }
             }
         }
         return legalMoves;