X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=public%2Fjavascripts%2Fvariants%2FMagnetic.js;h=8480d7994a39312b8d9ecbf8a0ae33013a396b1e;hb=375ecdd1387e729f85ed114e82253469e4849869;hp=ec2c975207d176d2edbff4e98ac8442f136b778c;hpb=9d218497ab97bc0e94ec4c1f0a40cf02df3ea0d4;p=vchess.git

diff --git a/public/javascripts/variants/Magnetic.js b/public/javascripts/variants/Magnetic.js
index ec2c9752..8480d799 100644
--- a/public/javascripts/variants/Magnetic.js
+++ b/public/javascripts/variants/Magnetic.js
@@ -1,9 +1,6 @@
 class MagneticRules extends ChessRules
 {
-	getEpSquare(move)
-	{
-		return undefined; //no en-passant
-	}
+	static get HasEnpassant() { return false; }
 
 	getPotentialMovesFrom([x,y])
 	{
@@ -23,7 +20,6 @@ class MagneticRules extends ChessRules
 	// TODO: job is done multiple times for (normal) promotions.
 	applyMagneticLaws(move)
 	{
-		const V = VariantRules;
 		if (move.appear[0].p == V.KING && move.appear.length==1)
 			return [move]; //kings are not charged
 		const aIdx = (move.appear[0].p != V.KING ? 0 : 1); //if castling, rook is charged
@@ -32,11 +28,10 @@ class MagneticRules extends ChessRules
 		const lastRank = (color=="w" ? 0 : 7);
 		const standardMove = JSON.parse(JSON.stringify(move));
 		this.play(standardMove);
-		const [sizeX,sizeY] = V.size;
 		for (let step of [[-1,0],[1,0],[0,-1],[0,1]])
 		{
 			let [i,j] = [x+step[0],y+step[1]];
-			while (i>=0 && i<sizeX && j>=0 && j<sizeY)
+			while (V.OnBoard(i,j))
 			{
 				if (this.board[i][j] != V.EMPTY)
 				{
@@ -71,7 +66,7 @@ class MagneticRules extends ChessRules
 						{
 							// Push it until we meet an obstacle or edge of the board
 							let [ii,jj] = [i+step[0],j+step[1]];
-							while (ii>=0 && ii<sizeX && jj>=0 && jj<sizeY)
+							while (V.OnBoard(ii,jj))
 							{
 								if (this.board[ii][jj] != V.EMPTY)
 									break;
@@ -156,8 +151,8 @@ class MagneticRules extends ChessRules
 		this.play(move);
 		// The only way to be "under check" is to have lost the king (thus game over)
 		let res = this.kingPos[c][0] < 0
-			? [ JSON.parse(JSON.stringify(saveKingPos)) ]
-			: [ ];
+			? [JSON.parse(JSON.stringify(saveKingPos))]
+			: [];
 		this.undo(move);
 		return res;
 	}
@@ -166,9 +161,9 @@ class MagneticRules extends ChessRules
 	{
 		super.updateVariables(move);
 		const c = this.getColor(move.start.x,move.start.y);
-		if (this.board[move.end.x][move.end.y] != VariantRules.EMPTY
+		if (this.board[move.end.x][move.end.y] != V.EMPTY
 			&& c != this.getColor(move.end.x,move.end.y)
-			&& this.getPiece(move.end.x,move.end.y) == VariantRules.KING)
+			&& this.getPiece(move.end.x,move.end.y) == V.KING)
 		{
 			// We took opponent king !
 			const oppCol = this.getOppCol(c);
@@ -212,7 +207,10 @@ class MagneticRules extends ChessRules
 		return this.turn == "w" ? "0-1" : "1-0";
 	}
 
-	static get THRESHOLD_MATE() {
+	static get THRESHOLD_MATE()
+	{
 		return 500; //checkmates evals may be slightly below 1000
 	}
 }
+
+const VariantRules = MagneticRules;