deepcrayon/lila
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restrict premoves to potentially valid moves

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This commit is contained in:
Thibault Duplessis 2013-10-09 19:49:10 +02:00
parent 23e630f2cd
commit cd5c7a6d5a
2 changed files with 43 additions and 4 deletions
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46
public/javascripts/big.js
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@ -1118,6 +1118,29 @@ var storage = {
possibleMovesContain: function(from, to) {
return this.options.possible_moves != null && typeof this.options.possible_moves[from] !== 'undefined' && this.options.possible_moves[from].indexOf(to) != -1;
},
validMove: function(from, to, piece) {
if (from == to) return false;
var self = this, f = self.getSquareCoords(from), t = self.getSquareCoords(to);
var color = self.getPieceColor(piece), role = self.getPieceRole(piece);
switch(role) {
case 'pawn':
if (Math.abs(t.x - f.x) > 1) return false;
if (color == 'white') return (t.y == f.y + 1) || (f.y == 2 && t.y == 4 && f.x == t.x)
else return (t.y == f.y - 1) || (f.y == 7 && t.y == 5 && f.x == t.x)
case 'knight':
var xd = Math.abs(t.x - f.x)
var yd = Math.abs(t.y - f.y)
return (xd == 1 && yd == 2) || (xd == 2 && yd == 1);
case 'bishop':
return Math.abs(t.x - f.x) == Math.abs(t.y - f.y);
case 'rook':
return t.x == f.x || t.y == f.y;
case 'king':
return Math.abs(t.x - f.x) <= 1 && Math.abs(t.y - f.y) <=1;
case 'queen':
return Math.abs(t.x - f.x) == Math.abs(t.y - f.y) || t.x == f.x || t.y == f.y;
}
},
applyPremove: function() {
var self = this;
if (self.premove && self.isMyTurn()) {
@ -1137,7 +1160,7 @@ var storage = {
var self = this;
if (self.isMyTurn()) return;
self.unsetPremove();
if (move.from == move.to) return;
if (!self.validMove(move.from, move.to, move.piece)) return;
self.premove = move;
$("#" + move.from + ",#" + move.to).addClass("premoved");
self.unselect();
@ -1161,9 +1184,11 @@ var storage = {
to: squareId,
b: self.blur
};
if (moveData.from == moveData.to) return;
if (!self.isMyTurn()) {
return self.setPremove({
piece: $piece,
from: moveData.from,
to: moveData.to
});
@ -1223,7 +1248,8 @@ var storage = {
$(this).droppable({
accept: function(draggable) {
if (!self.isMyTurn()) {
return draggingKey != squareId;
var $piece = $('#' + draggingKey).find('>.lichess_piece');
if ($piece.length) return self.validMove(draggingKey, squareId, $piece);
} else {
return draggingKey && self.possibleMovesContain(draggingKey, squareId);
}
@ -1279,7 +1305,9 @@ var storage = {
var $this = $(this);
$this.hover(function() {
if ($selected = self.$board.find('div.lcs.selected').orNot()) {
if (!self.isMyTurn() || self.possibleMovesContain($selected.attr('id'), $this.attr('id'))) {
var $piece = $selected.find('>.lichess_piece');
var validPremove = !self.isMyTurn() && $piece.length && self.validMove($selected.attr('id'), $this.attr('id'), $piece);
if (validPremove || self.possibleMovesContain($selected.attr('id'), $this.attr('id'))) {
$this.addClass('selectable');
}
}
@ -1381,6 +1409,18 @@ var storage = {
getPieceColor: function($piece) {
return $piece.hasClass('white') ? 'white' : 'black';
},
getPieceRole: function($piece) {
var klass = $piece[0].className;
return _.find(['pawn', 'knight', 'bishop', 'rook', 'queen', 'king'], function(r) {
return klass.indexOf(r) != -1;
});
},
getSquareCoords: function(square) {
return {
x: 'abcdefgh'.indexOf(square[0]) +1,
y: parseInt(square[1])
};
},
isPlayerColor: function(color) {
return !this.options.player.spectator && this.options.player.color == color;
},

1
todo
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@ -77,5 +77,4 @@ analysis = branch analysisContinuation
analysis always show best move
analysis infer ! and !! from evaluation at depth
no challenge when playing http://en.lichess.org/forum/lichess-feedback/defis#2
prune nonsensical premoves (efaust on #chess) (use bitboard)
user option for auto-promotion (requested by NM :P) (http://en.lichess.org/@/Matetricks)