X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=public%2Fjavascripts%2Fvariants%2FGrand.js;h=276acbc37bee17194c47f3353026284829851506;hb=c794dbb87592782913af0a09784ed25e019e4d10;hp=844d62c740c7c203729fb7dadd251792fa5506b8;hpb=a6abf094c35a26019e47fea21302c4be32ff030b;p=vchess.git

diff --git a/public/javascripts/variants/Grand.js b/public/javascripts/variants/Grand.js
index 844d62c7..276acbc3 100644
--- a/public/javascripts/variants/Grand.js
+++ b/public/javascripts/variants/Grand.js
@@ -1,9 +1,9 @@
-//https://www.chessvariants.com/large.dir/freeling.html
+// NOTE: initial setup differs from the original; see
+// https://www.chessvariants.com/large.dir/freeling.html
 class GrandRules extends ChessRules
 {
 	static getPpath(b)
 	{
-		const V = VariantRules;
 		return ([V.MARSHALL,V.CARDINAL].includes(b[1]) ? "Grand/" : "") + b;
 	}
 
@@ -13,16 +13,20 @@ class GrandRules extends ChessRules
 		this.captures = { "w": {}, "b": {} }; //for promotions
 	}
 
-	static get size() { return [10,10]; }
+	static get size() { return {x:10,y:10}; }
 
 	static get MARSHALL() { return 'm'; } //rook+knight
 	static get CARDINAL() { return 'c'; } //bishop+knight
 
+	static get PIECES() {
+		return ChessRules.PIECES.concat([V.MARSHALL,V.CARDINAL]);
+	}
+
 	// En-passant after 2-sq or 3-sq jumps
 	getEpSquare(move)
 	{
 		const [sx,sy,ex] = [move.start.x,move.start.y,move.end.x];
-		if (this.getPiece(sx,sy) == VariantRules.PAWN && Math.abs(sx - ex) >= 2)
+		if (this.getPiece(sx,sy) == V.PAWN && Math.abs(sx - ex) >= 2)
 		{
 			const step = (ex-sx) / Math.abs(ex-sx);
 			let res = [{
@@ -45,9 +49,9 @@ class GrandRules extends ChessRules
 	{
 		switch (this.getPiece(x,y))
 		{
-			case VariantRules.MARSHALL:
+			case V.MARSHALL:
 				return this.getPotentialMarshallMoves([x,y]);
-			case VariantRules.CARDINAL:
+			case V.CARDINAL:
 				return this.getPotentialCardinalMoves([x,y]);
 			default:
 				return super.getPotentialMovesFrom([x,y])
@@ -60,8 +64,7 @@ class GrandRules extends ChessRules
 	{
 		const color = this.turn;
 		let moves = [];
-		const V = VariantRules;
-		const [sizeX,sizeY] = VariantRules.size;
+		const [sizeX,sizeY] = [V.size.x,V.size.y];
 		const shift = (color == "w" ? -1 : 1);
 		const startRanks = (color == "w" ? [sizeX-2,sizeX-3] : [1,2]);
 		const lastRanks = (color == "w" ? [0,1,2] : [sizeX-1,sizeX-2,sizeX-3]);
@@ -84,10 +87,16 @@ class GrandRules extends ChessRules
 				}
 			}
 			// Captures
-			if (y>0 && this.canTake([x,y], [x+shift,y-1]) && this.board[x+shift][y-1] != V.EMPTY)
+			if (y>0 && this.canTake([x,y], [x+shift,y-1])
+				&& this.board[x+shift][y-1] != V.EMPTY)
+			{
 				moves.push(this.getBasicMove([x,y], [x+shift,y-1]));
-			if (y<sizeY-1 && this.canTake([x,y], [x+shift,y+1]) && this.board[x+shift][y+1] != V.EMPTY)
+			}
+			if (y<sizeY-1 && this.canTake([x,y], [x+shift,y+1])
+				&& this.board[x+shift][y+1] != V.EMPTY)
+			{
 				moves.push(this.getBasicMove([x,y], [x+shift,y+1]));
+			}
 		}
 
 		if (lastRanks.includes(x+shift))
@@ -101,10 +110,16 @@ class GrandRules extends ChessRules
 				if (this.board[x+shift][y] == V.EMPTY)
 					moves.push(this.getBasicMove([x,y], [x+shift,y], {c:color,p:p}));
 				// Captures
-				if (y>0 && this.canTake([x,y], [x+shift,y-1]) && this.board[x+shift][y-1] != V.EMPTY)
+				if (y>0 && this.canTake([x,y], [x+shift,y-1])
+					&& this.board[x+shift][y-1] != V.EMPTY)
+				{
 					moves.push(this.getBasicMove([x,y], [x+shift,y-1], {c:color,p:p}));
-				if (y<sizeY-1 && this.canTake([x,y], [x+shift,y+1]) && this.board[x+shift][y+1] != V.EMPTY)
+				}
+				if (y<sizeY-1 && this.canTake([x,y], [x+shift,y+1])
+					&& this.board[x+shift][y+1] != V.EMPTY)
+				{
 					moves.push(this.getBasicMove([x,y], [x+shift,y+1], {c:color,p:p}));
+				}
 			});
 		}
 
@@ -138,14 +153,12 @@ class GrandRules extends ChessRules
 
 	getPotentialMarshallMoves(sq)
 	{
-		const V = VariantRules;
 		return this.getSlideNJumpMoves(sq, V.steps[V.ROOK]).concat(
 			this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep"));
 	}
 
 	getPotentialCardinalMoves(sq)
 	{
-		const V = VariantRules;
 		return this.getSlideNJumpMoves(sq, V.steps[V.BISHOP]).concat(
 			this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep"));
 	}
@@ -159,23 +172,22 @@ class GrandRules extends ChessRules
 
 	isAttackedByMarshall(sq, colors)
 	{
-		const V = VariantRules;
 		return this.isAttackedBySlideNJump(sq, colors, V.MARSHALL, V.steps[V.ROOK])
-			|| this.isAttackedBySlideNJump(sq, colors, V.MARSHALL, V.steps[V.KNIGHT], "oneStep");
+			|| this.isAttackedBySlideNJump(
+				sq, colors, V.MARSHALL, V.steps[V.KNIGHT], "oneStep");
 	}
 
 	isAttackedByCardinal(sq, colors)
 	{
-		const V = VariantRules;
 		return this.isAttackedBySlideNJump(sq, colors, V.CARDINAL, V.steps[V.BISHOP])
-			|| this.isAttackedBySlideNJump(sq, colors, V.CARDINAL, V.steps[V.KNIGHT], "oneStep");
+			|| this.isAttackedBySlideNJump(
+				sq, colors, V.CARDINAL, V.steps[V.KNIGHT], "oneStep");
 	}
 
 	updateVariables(move)
 	{
 		super.updateVariables(move);
-		if (move.vanish.length==2 && move.appear.length==1
-			&& move.vanish[1].p != VariantRules.PAWN)
+		if (move.vanish.length==2 && move.appear.length==1 && move.vanish[1].p != V.PAWN)
 		{
 			// Capture: update this.captures
 			if (!this.captures[move.vanish[1].c][move.vanish[1].p])
@@ -188,8 +200,7 @@ class GrandRules extends ChessRules
 	unupdateVariables(move)
 	{
 		super.unupdateVariables(move);
-		if (move.vanish.length==2 && move.appear.length==1
-			&& move.vanish[1].p != VariantRules.PAWN)
+		if (move.vanish.length==2 && move.appear.length==1 && move.vanish[1].p != V.PAWN)
 		{
 			this.captures[move.vanish[1].c][move.vanish[1].p] =
 				Math.max(0, this.captures[move.vanish[1].c][move.vanish[1].p]-1);
@@ -208,9 +219,9 @@ class GrandRules extends ChessRules
 	// TODO: this function could be generalized and shared better
 	static GenRandInitFen()
 	{
-		let pieces = [new Array(10), new Array(10)];
+		let pieces = { "w": new Array(10), "b": new Array(10) };
 		// Shuffle pieces on first and last rank
-		for (let c = 0; c <= 1; c++)
+		for (let c of ["w","b"])
 		{
 			let positions = _.range(10);
 
@@ -264,10 +275,9 @@ class GrandRules extends ChessRules
 			pieces[c][knight2Pos] = 'n';
 			pieces[c][rook2Pos] = 'r';
 		}
-		let fen = pieces[0].join("") +
+		return pieces["b"].join("") +
 			"/pppppppppp/10/10/10/10/10/10/PPPPPPPPPP/" +
-			pieces[1].join("").toUpperCase() +
-			" 1111";
-		return fen;
+			pieces["w"].join("").toUpperCase() +
+			" 1111 w";
 	}
 }