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| "use strict";
Object.defineProperties(exports, {
Position: {get: function() {
return Position;
}},
__esModule: {value: true}
});
var $__0 = require('./brands'),
WHITE = $__0.WHITE,
BLACK = $__0.BLACK,
KING = $__0.KING,
PAWN = $__0.PAWN;
var Board = require('./board').Board;
var Mobility = require('./mobility').Mobility;
var Castling = require('./castling').Castling;
var EnPassantTarget = require('./eptarget').EnPassantTarget;
var Point = require('./point').Point;
var Promotion = require('./promotion').Promotion;
var Algebraic = require('./algebraic').Algebraic;
var HalfmoveClock = require('./halfmoveclock').HalfmoveClock;
var $__9 = require('./util'),
entries = $__9.entries,
identity = $__9.identity,
squareName = $__9.squareName,
squareCoords = $__9.squareCoords,
oppositeColor = $__9.oppositeColor,
bounded = $__9.bounded;
var $__10 = require('./error'),
ChessError = $__10.ChessError,
MobilityError = $__10.MobilityError,
CheckError = $__10.CheckError,
PromotionError = $__10.PromotionError;
var assign = require('lodash.assign');
var Position = function Position() {
var $__18,
$__19,
$__20,
$__21,
$__22,
$__23,
$__24,
$__25;
var $__17 = $traceurRuntime.assertObject(arguments[0] !== (void 0) ? arguments[0] : {}),
ranks = ($__18 = $__17.ranks) === void 0 ? 8 : $__18,
files = ($__19 = $__17.files) === void 0 ? 8 : $__19,
activeColor = ($__20 = $__17.activeColor) === void 0 ? WHITE : $__20,
castling = ($__21 = $__17.castling) === void 0 ? null : $__21,
enPassantTarget = ($__22 = $__17.enPassantTarget) === void 0 ? null : $__22,
halfmoveClock = ($__23 = $__17.halfmoveClock) === void 0 ? null : $__23,
fullmoveCounter = ($__24 = $__17.fullmoveCounter) === void 0 ? 0 : $__24,
board = ($__25 = $__17.board) === void 0 ? new Board(ranks, files) : $__25;
this.board = board;
this.activeColor = activeColor;
this.castling = castling;
this.enPassantTarget = enPassantTarget;
this.halfmoveClock = halfmoveClock;
this.fullmoveCounter = fullmoveCounter;
this.promotionSquare = Promotion.square(this);
};
var $Position = Position;
($traceurRuntime.createClass)(Position, {
beget: function(overrides) {
return new $Position(assign({}, this, overrides));
},
get files() {
return this.board.files;
},
get ranks() {
return this.board.ranks;
},
pieces: function(brand) {
return this.board.getPieces(brand);
},
piece: function(squareName) {
return this.pieceByCoords(squareCoords(squareName));
},
pieceCoords: function(piece) {
return this.board.getPieceCoords(piece);
},
pieceByCoords: function(point) {
var rotated = arguments[1] !== (void 0) ? arguments[1] : false;
return this.board.getPieceByCoords(point, rotated);
},
query: $traceurRuntime.initGeneratorFunction(function $__26() {
var selector,
$__15,
$__16,
piece,
$__13,
$__14,
$__18,
val,
key;
var $arguments = arguments;
return $traceurRuntime.createGeneratorInstance(function($ctx) {
while (true)
switch ($ctx.state) {
case 0:
selector = $arguments[0] !== (void 0) ? $arguments[0] : {};
$ctx.state = 20;
break;
case 20:
$__15 = this.pieces(selector.brand)[$traceurRuntime.toProperty(Symbol.iterator)]();
$ctx.state = 2;
break;
case 2:
$ctx.state = (!($__16 = $__15.next()).done) ? 15 : -2;
break;
case 15:
piece = $__16.value;
$ctx.state = 16;
break;
case 16:
$__13 = entries(selector)[$traceurRuntime.toProperty(Symbol.iterator)]();
$ctx.state = 5;
break;
case 5:
$ctx.state = (!($__14 = $__13.next()).done) ? 7 : 9;
break;
case 7:
$__18 = $traceurRuntime.assertObject($__14.value), val = $__18[0], key = $__18[1];
$ctx.state = 8;
break;
case 8:
$ctx.state = (piece[$traceurRuntime.toProperty(key)] !== val) ? 2 : 5;
break;
case 9:
$ctx.state = 12;
return piece;
case 12:
$ctx.maybeThrow();
$ctx.state = 2;
break;
default:
return $ctx.end();
}
}, $__26, this);
}),
all: function(selector) {
return $traceurRuntime.spread(this.query(selector));
},
one: function(selector) {
for (var $__13 = this.query(selector)[$traceurRuntime.toProperty(Symbol.iterator)](),
$__14; !($__14 = $__13.next()).done; ) {
var i = $__14.value;
{
return i;
}
}
return null;
},
checks: $traceurRuntime.initGeneratorFunction(function $__27() {
var color,
loc,
$__13,
$__14,
enemy;
var $arguments = arguments;
return $traceurRuntime.createGeneratorInstance(function($ctx) {
while (true)
switch ($ctx.state) {
case 0:
color = $arguments[0] !== (void 0) ? $arguments[0] : this.activeColor;
loc = $arguments[1] !== (void 0) ? $arguments[1] : this.pieceCoords(this.one({
brand: KING,
color: color
}));
$ctx.state = 11;
break;
case 11:
$__13 = this.query({color: oppositeColor(color)})[$traceurRuntime.toProperty(Symbol.iterator)]();
$ctx.state = 4;
break;
case 4:
$ctx.state = (!($__14 = $__13.next()).done) ? 6 : -2;
break;
case 6:
enemy = $__14.value;
$ctx.state = 7;
break;
case 7:
$ctx.state = (enemy.canCapture(this, this.pieceCoords(enemy), loc)) ? 1 : 4;
break;
case 1:
$ctx.state = 2;
return enemy;
case 2:
$ctx.maybeThrow();
$ctx.state = 4;
break;
default:
return $ctx.end();
}
}, $__27, this);
}),
isCheck: function(color, loc) {
for (var $__13 = this.checks(color, loc)[$traceurRuntime.toProperty(Symbol.iterator)](),
$__14; !($__14 = $__13.next()).done; ) {
var _ = $__14.value;
{
return true;
}
}
return false;
},
isCheckmate: function() {
var color = arguments[0] !== (void 0) ? arguments[0] : this.activeColor;
if (!this.isCheck(color)) {
return false;
}
for (var $__15 = this.query({color: color})[$traceurRuntime.toProperty(Symbol.iterator)](),
$__16; !($__16 = $__15.next()).done; ) {
var ally = $__16.value;
{
for (var $__13 = bounded(this.board, ally.moves(this))[$traceurRuntime.toProperty(Symbol.iterator)](),
$__14; !($__14 = $__13.next()).done; ) {
var move = $__14.value;
{
try {
Eif (!this.movePiece(ally, move).isCheck(color)) {
return false;
}
} catch (err) {
Eif (err instanceof ChessError) {
continue;
}
throw err;
}
}
}
}
}
return true;
},
tryMovePiece: function(piece, target) {
try {
return this.movePiece(piece, target);
} catch (err) {
Eif (err instanceof ChessError) {
return this;
}
throw err;
}
},
movePiece: function(piece, target) {
if (target == null || piece == null) {
throw new Error("Argument error");
}
var $__18 = $traceurRuntime.assertObject(EnPassantTarget.capturablePiece(this, piece, target)),
capturePiece = $__18.capturePiece,
captureTarget = $__18.captureTarget,
isEnPassant = $__18.isEnPassant;
if (!Mobility.isLegal({
position: this,
piece: piece,
target: target,
capturePiece: capturePiece
})) {
throw new MobilityError();
}
var castling = Castling.analyze(this, piece, target);
var position = this.beget({
activeColor: oppositeColor(this.activeColor),
castling: castling,
enPassantTarget: EnPassantTarget.analyze(this, piece, target),
halfmoveClock: HalfmoveClock.analyze(this, piece, target),
fullmoveCounter: (this.activeColor === BLACK ? this.fullmoveCounter + 1 : this.fullmoveCounter),
board: this.board.map((function(p, square) {
if ((p === piece) || (isEnPassant && square.equal(captureTarget)) || (p && p === castling.rook)) {
return null;
}
if (castling.square && square.equal(castling.square)) {
return castling.rook;
}
if (square.equal(target)) {
return piece;
}
return p;
}))
});
if (position.isCheck(this.activeColor)) {
throw new CheckError();
}
return position;
},
promote: function(prize) {
var $__11 = this;
if (this.promotionSquare == null) {
throw new PromotionError();
}
return this.beget({
board: this.board.map((function(p, square) {
return square.equal($__11.promotionSquare) ? prize : p;
})),
promotionSquare: null
});
},
move: function(notation) {
var $__18 = $traceurRuntime.assertObject(Algebraic.parse(notation, this)),
piece = $__18.piece,
target = $__18.target;
return this.movePiece(piece, target);
}
}, {});
|