X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=public%2Fjavascripts%2Fvariants%2FMagnetic.js;h=e126f1cee175f9aafe0691cb70a34802a8a175d6;hb=3c09dc498791ac478679bf2f42f441342c4fa22c;hp=4c286e1dea5b2fe1270600ebe607040bdf027ad9;hpb=5bfb09560aa346d132e829a7c63558407bcc8091;p=vchess.git

diff --git a/public/javascripts/variants/Magnetic.js b/public/javascripts/variants/Magnetic.js
index 4c286e1d..e126f1ce 100644
--- a/public/javascripts/variants/Magnetic.js
+++ b/public/javascripts/variants/Magnetic.js
@@ -14,7 +14,7 @@ class MagneticRules extends ChessRules
 			if (newMove_s.length == 1)
 				moves.push(newMove_s[0]);
 			else //promotion
-				moves = moves.concat(moves, newMove_s);
+				moves = moves.concat(newMove_s);
 		});
 		return moves;
 	}
@@ -112,7 +112,7 @@ class MagneticRules extends ChessRules
 		// Scan move for pawn (max 1) on 8th rank
 		for (let i=1; i<move.appear.length; i++)
 		{
-			if (move.appear[i].p==V.PAWN && move.appear[i].x==lastRank)
+			if (move.appear[i].p==V.PAWN && move.appear[i].c==color && move.appear[i].x==lastRank)
 			{
 				move.appear[i].p = V.ROOK;
 				moves.push(move);
@@ -212,4 +212,23 @@ class MagneticRules extends ChessRules
 		// No valid move: our king disappeared
 		return this.turn == "w" ? "0-1" : "1-0";
 	}
+
+	static get THRESHOLD_MATE() {
+		return 500; //checkmates evals may be slightly below 1000
+	}
+
+	getComputerMove()
+	{
+		let moves1 = this.getAllValidMoves();
+		// Can I mate in 1 ?
+		for (let i of _.shuffle(_.range(moves1.length)))
+		{
+			this.play(moves1[i]);
+			const finish = (Math.abs(this.evalPosition()) >= VariantRules.THRESHOLD_MATE);
+			this.undo(moves1[i]);
+			if (finish)
+				return moves1[i];
+		}
+		return super.getComputerMove(moves1);
+	}
 }