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board.js
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class Board{
constructor(){
this.whitePieces = [];
this.blackPieces = [];
this.setupPieces();
this.show();
this.updateLegalMoves();
this.isWhiteKingInCheck = false;
this.isBlackKingInCheck = false;
this.whiteKingCheckmated = false;
this.blackKingCheckmated = false;
this.piecePosition = {
"row1":{
"0":"0",
"1":"0",
"2":"0",
"3":"0",
"4":"0",
"5":"0",
"6":"0",
"7":"0"
}
}
this.positionInString = [["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"]];
this.score = 0;
}
extractStringFromPosition(){
this.positionInString = [["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"],
["_", "_", "_", "_", "_", "_", "_", "_"]];
for(let i=0; i<this.whitePieces.length; ++i){
this.positionInString[this.whitePieces[i].matrixPosition.x][this.whitePieces[i].matrixPosition.y]
= (this.whitePieces[i].letter+"W");
}
for(let i=0; i<this.blackPieces.length; ++i){
this.positionInString[this.blackPieces[i].matrixPosition.x][this.blackPieces[i].matrixPosition.y]
= (this.blackPieces[i].letter+"B");
}
}
extractPositionFromPositionString(actualPosString){
var posString = [];
for(let i=0; i<actualPosString.length; ++i){
posString.push(actualPosString[i].slice());
}
// console.log(posString);
this.whitePieces = [];
this.blackPieces = [];
for(let i=0; i<posString.length; ++i){
for(let j=0; j<posString[i].length; ++j){
if(posString[i][j]!="_"){
var isWhiteTempVariable = (posString[i][j].slice(-1)==='W')?true:false;
posString[i][j] = posString[i][j].slice(0,-1);
if(posString[i][j]=="K"){
if(isWhiteTempVariable){
this.whitePieces.push(new King(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new King(i,j,isWhiteTempVariable));
}
}
if(posString[i][j]=="Q"){
if(isWhiteTempVariable){
this.whitePieces.push(new Queen(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new Queen(i,j,isWhiteTempVariable));
}
}
if(posString[i][j]=="B"){
if(isWhiteTempVariable){
this.whitePieces.push(new Bishop(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new Bishop(i,j,isWhiteTempVariable));
}
}
if(posString[i][j]=="Kn"){
if(isWhiteTempVariable){
this.whitePieces.push(new Knight(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new Knight(i,j,isWhiteTempVariable));
}
}
if(posString[i][j]=="R"){
if(isWhiteTempVariable){
this.whitePieces.push(new Rook(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new Rook(i,j,isWhiteTempVariable));
}
}
if(posString[i][j]=="P"){
if(isWhiteTempVariable){
this.whitePieces.push(new Pawn(i,j,isWhiteTempVariable));
}
else{
this.blackPieces.push(new Pawn(i,j,isWhiteTempVariable));
}
}
}
}
}
}
pieceValueScore(){
var valPieces = 0;
for(let i=0; i<this.whitePieces.length; ++i){
if(this.whitePieces[i].letter=="Q"){
valPieces+=9;
}
else if(this.whitePieces[i].letter=="R"){
valPieces+=5;
}
else if(this.whitePieces[i].letter=="B"){
valPieces+=3;
}
else if(this.whitePieces[i].letter=="Kn"){
valPieces+=3;
}
else if(this.whitePieces[i].letter=="P"){
valPieces+=1;
}
}
if(this.whiteKingCheckmated){
valPieces-=10000;
}
for(let i =0; i<this.blackPieces.length; ++i){
if(this.blackPieces[i].letter=="Q"){
valPieces-=9;
}
else if(this.blackPieces[i].letter=="R"){
valPieces-=5;
}
else if(this.blackPieces[i].letter=="B"){
valPieces-=3;
}
else if(this.blackPieces[i].letter=="Kn"){
valPieces-=3;
}
else if(this.blackPieces[i].letter=="P"){
valPieces-=1;
}
}
if(this.blackKingCheckmated){
valPieces+=10000;
}
this.score = valPieces;
}
addWhitePiece(pc){
this.whitePieces.push(pc);
}
addBlackPiece(pc){
this.blackPieces.push(pc);
}
setupPieces(){
this.whitePieces.push(new King(4,7,true));
this.whitePieces.push(new Bishop(2,7,true));
this.whitePieces.push(new Bishop(5,7,true));
this.whitePieces.push(new Rook(0,7,true));
this.whitePieces.push(new Rook(7,7,true));
this.whitePieces.push(new Queen(3,7,true));
this.whitePieces.push(new Knight(1,7,true));
this.whitePieces.push(new Knight(6,7,true));
this.whitePieces.push(new Pawn(0,6,true));
this.whitePieces.push(new Pawn(1,6,true));
this.whitePieces.push(new Pawn(2,6,true));
this.whitePieces.push(new Pawn(3,6,true));
this.whitePieces.push(new Pawn(4,6,true));
this.whitePieces.push(new Pawn(5,6,true));
this.whitePieces.push(new Pawn(6,6,true));
this.whitePieces.push(new Pawn(7,6,true));
this.blackPieces.push(new King(4,0,false));
this.blackPieces.push(new Bishop(2,0,false));
this.blackPieces.push(new Bishop(5,0,false));
this.blackPieces.push(new Rook(0,0,false));
this.blackPieces.push(new Rook(7,0,false));
this.blackPieces.push(new Queen(3,0,false));
this.blackPieces.push(new Knight(1,0,false));
this.blackPieces.push(new Knight(6,0,false));
this.blackPieces.push(new Pawn(0,1,false));
this.blackPieces.push(new Pawn(1,1,false));
this.blackPieces.push(new Pawn(2,1,false));
this.blackPieces.push(new Pawn(3,1,false));
this.blackPieces.push(new Pawn(4,1,false));
this.blackPieces.push(new Pawn(5,1,false));
this.blackPieces.push(new Pawn(6,1,false));
this.blackPieces.push(new Pawn(7,1,false));
}
pieceAt(xpos,ypos){
for(let i=0; i<this.whitePieces.length; ++i){
if(this.whitePieces[i].matrixPosition.x==xpos &
this.whitePieces[i].matrixPosition.y==ypos){
return true;
}
}
for(let i=0; i<this.blackPieces.length; ++i){
if(this.blackPieces[i].matrixPosition.x==xpos &
this.blackPieces[i].matrixPosition.y==ypos){
return true;
}
}
return false;
}
getPiece(x,y){
var whitePieceLen = this.whitePieces.length;
for(let i=0; i<whitePieceLen; ++i){
if(this.whitePieces[i].matrixPosition.x==x &
this.whitePieces[i].matrixPosition.y==y){
return this.whitePieces[i];
}
}
var blackPieceLen = this.blackPieces.length;
for(let i=0; i<blackPieceLen; ++i){
if(this.blackPieces[i].matrixPosition.x==x &
this.blackPieces[i].matrixPosition.y==y){
return this.blackPieces[i];
}
}
}
getPieceIndex(){
var whitePieceLen = this.whitePieces.length;
for(let i=0; i<whitePieceLen; ++i){
if(this.whitePieces[i].matrixPosition.x==x &
this.whitePieces[i].matrixPosition.y==y){
return i;
}
}
var blackPieceLen = this.blackPieces.length;
for(let i=0; i<blackPieceLen; ++i){
if(this.blackPieces[i].matrixPosition.x==x &
this.blackPieces[i].matrixPosition.y==y){
i;
}
}
}
updateIfWhiteKingInCheck(){
this.isWhiteKingInCheck = false;
var KingX, KingY;
for(let i=0; i<this.whitePieces.length; ++i){
if(this.whitePieces[i].letter == "K"){
KingX = this.whitePieces[i].matrixPosition.x;
KingY = this.whitePieces[i].matrixPosition.y;
}
}
for(let i=0; i<this.blackPieces.length; ++i){
for(let j=0; j<this.blackPieces[i].legalMoves.length; ++j){
if(this.blackPieces[i].legalMoves[j][0] == KingX &
this.blackPieces[i].legalMoves[j][1] == KingY){
this.isWhiteKingInCheck = true;
break;
}
}
}
}
updateIfBlackKingInCheck(){
this.isBlackKingInCheck = false;
var KingX, KingY;
for(let i=0; i<this.blackPieces.length; ++i){
if(this.blackPieces[i].letter == "K"){
KingX = this.blackPieces[i].matrixPosition.x;
KingY = this.blackPieces[i].matrixPosition.y;
}
}
for(let i=0; i<this.whitePieces.length; ++i){
for(let j=0; j<this.whitePieces[i].legalMoves.length; ++j){
if(this.whitePieces[i].legalMoves[j][0] == KingX &
this.whitePieces[i].legalMoves[j][1] == KingY){
this.isBlackKingInCheck = true;
break;
}
}
}
}
removePieceAt(x,y){
for(let i=0; i<this.whitePieces.length; ++i){
if(this.whitePieces[i].matrixPosition.x==x &
this.whitePieces[i].matrixPosition.y==y){
this.whitePieces.splice(i,1);
break;
}
}
for(let i=0; i<this.blackPieces.length; ++i){
if(this.blackPieces[i].matrixPosition.x==x &
this.blackPieces[i].matrixPosition.y==y){
this.blackPieces.splice(i,1);
break;
}
}
}
addPieceAt(x,y, piece){
if(piece.isWhite){
this.whitePieces.push(piece);
}
else{
this.blackPieces.push(piece);
}
}
movePieceFromTo(x1,y1,x2,y2, pieceMovedIs){
const originalPiece = this.getPiece(x1,y1);
var letterOfPieceToBeRemoved = originalPiece.letter;
var pc;
if(letterOfPieceToBeRemoved=="K"){
pc = new King(x2, y2 , pieceMovedIs);
}
if(letterOfPieceToBeRemoved=="Q"){
pc = new Queen(x2, y2,pieceMovedIs);
}
if(letterOfPieceToBeRemoved=="P"){
pc = new Pawn(x2, y2, pieceMovedIs);
}
if(letterOfPieceToBeRemoved=="R"){
pc = new Rook(x2, y2, pieceMovedIs);
}
if(letterOfPieceToBeRemoved=="Kn"){
pc = new Knight(x2, y2,pieceMovedIs);
}
if(letterOfPieceToBeRemoved=="B"){
pc = new Bishop(x2, y2, pieceMovedIs);
}
this.removePieceAt(x1,y1);
if(this.pieceAt(x2,y2)){
this.removePieceAt(x2,y2);
}
if(pieceMovedIs){
this.whitePieces.push(pc);
}
else{
this.blackPieces.push(pc);
}
}
boundryCheck(x,y){
if(x>=0 & x<=7 & y>=0 & y<=7){
return true;
}
return false;
}
didBlackWin(){
this.whiteKingCheckmated = false;
var mvCNT = 0;
for(let i=0; i<this.whitePieces.length; ++i){
mvCNT+=this.whitePieces[i].legalMoves.length;
}
if(mvCNT==0 & this.isWhiteKingInCheck){
// console.log('Black Won');
this.whiteKingCheckmated = true;
}
}
didWhiteWin(){
this.blackKingCheckmated = false;
var mvCNT = 0;
for(let i=0; i<this.blackPieces.length; ++i){
mvCNT+=this.blackPieces[i].legalMoves.length;
}
if(mvCNT==0 & this.isBlackKingInCheck){
this.blackKingCheckmated = true;
// console.log('White Won');
}
}
isWhiteKingCheckMated(){
var tmpofpieces = [];
this.extractStringFromPosition();
for(let i=0; i<this.positionInString.length; ++i){
tmpofpieces.push(this.positionInString[i].slice());
}
var brd = new Board();
brd.extractPositionFromPositionString(tmpofpieces);
brd.extractStringFromPosition();
brd.updateLegalMoves();
brd.updateIfWhiteKingInCheck();
brd.updateIfBlackKingInCheck();
for(let i=brd.whitePieces.length-1; i>=0; --i){
for(let j=brd.whitePieces[i].legalMoves.length-1; j>=0; --j){
brd.extractPositionFromPositionString(tmpofpieces);
brd.extractStringFromPosition();
brd.updateLegalMoves();
brd.updateIfWhiteKingInCheck();
brd.movePieceFromTo(brd.whitePieces[i].matrixPosition.x,
brd.whitePieces[i].matrixPosition.y,
brd.whitePieces[i].legalMoves[j][0],
brd.whitePieces[i].legalMoves[j][1], true);
brd.updateLegalMoves();
var isThisLegalMove = brd.isWhiteKingInCheck;
if(isThisLegalMove){
this.whitePieces[i].legalMoves.splice(j,1);
}
brd.extractPositionFromPositionString(tmpofpieces);
brd.extractStringFromPosition();
brd.updateLegalMoves();
}
}
}
isBlackKingCheckMated(){
var tmpofpieces = [];
this.extractStringFromPosition();
for(let i=0; i<this.positionInString.length; ++i){
tmpofpieces.push(this.positionInString[i].slice());
}
var brd = new Board();
brd.extractPositionFromPositionString(tmpofpieces);
brd.extractStringFromPosition();
brd.updateLegalMoves();
brd.updateIfWhiteKingInCheck();
brd.updateIfBlackKingInCheck();
for(let i=brd.blackPieces.length-1; i>=0; --i){
for(let j=brd.blackPieces[i].legalMoves.length-1; j>=0; --j){
brd.extractPositionFromPositionString(tmpofpieces);
brd.updateLegalMoves();
brd.updateIfBlackKingInCheck();
brd.movePieceFromTo(brd.blackPieces[i].matrixPosition.x,
brd.blackPieces[i].matrixPosition.y,
brd.blackPieces[i].legalMoves[j][0],
brd.blackPieces[i].legalMoves[j][1], true);
brd.updateLegalMoves();
brd.updateIfBlackKingInCheck();
brd.updateIfWhiteKingInCheck();
var isThisLegalMove = brd.isBlackKingInCheck;
if(isThisLegalMove){
this.blackPieces[i].legalMoves.splice(j,1);
}
brd.extractPositionFromPositionString(tmpofpieces);
brd.updateLegalMoves();
}
}
}
// isBlackKingCheckMated(){
// for(let i=this.blackPieces.length-1; i>=0; --i){
// for(let j=this.blackPieces[i].legalMoves.length-1; j>=0; --j){
// var isThisLegalMove = updateLegalMovesAfterBlackKingInCheck(this,i,j);
// if(!isThisLegalMove){
// this.blackPieces[i].legalMoves.splice(j,1);
// }
// }
// }
// }
updateLegalMoves(){
for(let i=0; i<this.whitePieces.length; ++i){
if(this.whitePieces[i].letter == "K"){
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
this.whitePieces[i].legalMoves = [];
if(this.pieceAt(posX-1,posY-1) & this.boundryCheck(posX-1, posY-1)){
if(!this.getPiece(posX-1, posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY-1]);
}
}
else{
if(this.boundryCheck(posX-1, posY-1)){
this.whitePieces[i].legalMoves.push([posX-1, posY-1]);
}
}
if(this.pieceAt(posX-1,posY) & this.boundryCheck(posX-1, posY)){
if(!this.getPiece(posX-1, posY).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY]);
}
}
else{
if(this.boundryCheck(posX-1, posY)){
this.whitePieces[i].legalMoves.push([posX-1, posY]);
}
}
if(this.pieceAt(posX-1,posY+1) & this.boundryCheck(posX-1, posY+1)){
if(!this.getPiece(posX-1, posY+1).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY+1]);
}
}
else{
if(this.boundryCheck(posX-1, posY+1)){
this.whitePieces[i].legalMoves.push([posX-1, posY+1]);
}
}
if(this.pieceAt(posX,posY-1) & this.boundryCheck(posX, posY-1)){
if(!this.getPiece(posX, posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX, posY-1]);
}
}
else{
if(this.boundryCheck(posX, posY-1)){
this.whitePieces[i].legalMoves.push([posX, posY-1]);
}
}
if(this.pieceAt(posX,posY+1) & this.boundryCheck(posX, posY+1)){
if(!this.getPiece(posX, posY+1).isWhite){
this.whitePieces[i].legalMoves.push([posX, posY+1]);
}
}
else{
if(this.boundryCheck(posX, posY+1)){
this.whitePieces[i].legalMoves.push([posX, posY+1]);
}
}
if(this.pieceAt(posX+1,posY-1) & this.boundryCheck(posX+1, posY-1)){
if(!this.getPiece(posX+1, posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX+1, posY-1]);
}
}
else{
if(this.boundryCheck(posX+1, posY-1)){
this.whitePieces[i].legalMoves.push([posX+1, posY-1]);
}
}
if(this.pieceAt(posX+1,posY) & this.boundryCheck(posX+1, posY)){
if(!this.getPiece(posX+1, posY).isWhite){
this.whitePieces[i].legalMoves.push([posX+1, posY]);
}
}
else{
if(this.boundryCheck(posX+1, posY)){
this.whitePieces[i].legalMoves.push([posX+1, posY]);
}
}
if(this.pieceAt(posX+1,posY+1) & this.boundryCheck(posX+1, posY+1)){
if(!this.getPiece(posX+1, posY+1).isWhite){
this.whitePieces[i].legalMoves.push([posX+1, posY+1]);
}
}
else{
if(this.boundryCheck(posX+1, posY+1)){
this.whitePieces[i].legalMoves.push([posX+1, posY+1]);
}
}
}
if(this.whitePieces[i].letter == "P"){
this.whitePieces[i].legalMoves = [];
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
if(this.whitePieces[i].matrixPosition.y == 6 ){
if(posX>=0 & posX<=7 & posY-1>=0 & posY-1<=7 &
!this.pieceAt(posX,posY-1)){
this.whitePieces[i].legalMoves.push([posX,posY-1]);
if(posX>=0 & posX<=7 & posY-2>=0 & posY-2<=7 &
!this.pieceAt(posX,posY-2)){
this.whitePieces[i].legalMoves.push([posX,posY-2]);
}
}
if(posX+1>=0 & posX+1<=7 & posY-1>=0 & posY-1<=7 &
this.pieceAt(posX+1,posY-1)){
if(!this.getPiece(posX+1,posY-1).isWhite)
{
this.whitePieces[i].legalMoves.push([posX+1, posY-1]);
}
}
if(posX-1>=0 & posX-1<=7 & posY-1>=0 & posY-1<=7 &
this.pieceAt(posX-1,posY-1)){
if(!this.getPiece(posX-1,posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY-1]);
}
}
}
else{
if(posX>=0 & posX<=7 & posY-1>=0 & posY-1<=7 &
!this.pieceAt(posX,posY-1)){
this.whitePieces[i].legalMoves.push([posX,posY-1]);
}
if(posX+1>=0 & posX+1<=7 & posY-1>=0 & posY-1<=7 &
this.pieceAt(posX+1,posY-1)){
if(!this.getPiece(posX+1,posY-1).isWhite)
{
this.whitePieces[i].legalMoves.push([posX+1, posY-1]);
}
}
if(posX-1>=0 & posX-1<=7 & posY-1>=0 & posY-1<=7 &
this.pieceAt(posX-1,posY-1)){
if(!this.getPiece(posX-1,posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY-1]);
}
}
}
}
if(this.whitePieces[i].letter == "Q"){
this.whitePieces[i].legalMoves = [];
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
var tmpX = posX-1;
var tmpY = posY-1;
while(tmpX>=0 && tmpY>=0){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
--tmpX; --tmpY;
}
tmpX = posX+1;
tmpY = posY-1;
while(tmpX<=7 && tmpY>=0){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
++tmpX; --tmpY;
}
tmpX = posX-1;
tmpY = posY+1;
while(tmpX>=0 && tmpY<=7){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
--tmpX; ++tmpY;
}
tmpX = posX+1;
tmpY = posY+1;
while(tmpX<=7 && tmpY<=7){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
++tmpX; ++tmpY;
}
var tmp = posX-1;
while(tmp>=0){
if(this.pieceAt(tmp, posY)){
if(this.getPiece(tmp,posY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmp,posY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmp,posY]);
}
--tmp;
}
tmp = posX+1;
while(tmp<=7){
if(this.pieceAt(tmp, posY)){
if(this.getPiece(tmp,posY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmp,posY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmp,posY]);
}
++tmp;
}
tmp = posY-1;
while(tmp>=0){
if(this.pieceAt(posX, tmp)){
if(this.getPiece(posX,tmp).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([posX,tmp]);
break;
}
else{
this.whitePieces[i].legalMoves.push([posX,tmp]);
}
--tmp;
}
tmp = posY+1;
while(tmp<=7){
if(this.pieceAt(posX, tmp)){
if(this.getPiece(posX,tmp).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([posX,tmp]);
break;
}
else{
this.whitePieces[i].legalMoves.push([posX,tmp]);
}
++tmp;
}
}
if(this.whitePieces[i].letter == "B"){
this.whitePieces[i].legalMoves = [];
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
var tmpX = posX-1;
var tmpY = posY-1;
while(tmpX>=0 && tmpY>=0){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
--tmpX; --tmpY;
}
tmpX = posX+1;
tmpY = posY-1;
while(tmpX<=7 && tmpY>=0){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
++tmpX; --tmpY;
}
tmpX = posX-1;
tmpY = posY+1;
while(tmpX>=0 && tmpY<=7){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
--tmpX; ++tmpY;
}
tmpX = posX+1;
tmpY = posY+1;
while(tmpX<=7 && tmpY<=7){
if(this.pieceAt(tmpX,tmpY)){
if(this.getPiece(tmpX,tmpY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmpX,tmpY]);
}
++tmpX; ++tmpY;
}
}
if(this.whitePieces[i].letter == "R"){
this.whitePieces[i].legalMoves = [];
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
var tmp = posX-1;
while(tmp>=0){
if(this.pieceAt(tmp, posY)){
if(this.getPiece(tmp,posY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmp,posY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmp,posY]);
}
--tmp;
}
tmp = posX+1;
while(tmp<=7){
if(this.pieceAt(tmp, posY)){
if(this.getPiece(tmp,posY).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([tmp,posY]);
break;
}
else{
this.whitePieces[i].legalMoves.push([tmp,posY]);
}
++tmp;
}
tmp = posY-1;
while(tmp>=0){
if(this.pieceAt(posX, tmp)){
if(this.getPiece(posX, tmp).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([posX,tmp]);
break;
}
else{
this.whitePieces[i].legalMoves.push([posX,tmp]);
}
--tmp;
}
tmp = posY+1;
while(tmp<=7){
if(this.pieceAt(posX, tmp)){
if(this.getPiece(posX,tmp).isWhite){
break;
}
this.whitePieces[i].legalMoves.push([posX,tmp]);
break;
}
else{
this.whitePieces[i].legalMoves.push([posX,tmp]);
}
++tmp;
}
}
if(this.whitePieces[i].letter == "Kn"){
var posX = this.whitePieces[i].matrixPosition.x;
var posY = this.whitePieces[i].matrixPosition.y;
this.whitePieces[i].legalMoves = [];
if(this.boundryCheck(posX+2 , posY+1)){
if(this.pieceAt(posX+2, posY+1)){
if(!this.getPiece(posX+2, posY+1).isWhite){
this.whitePieces[i].legalMoves.push([posX+2, posY+1]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX+2, posY+1]);
}
}
if(this.boundryCheck(posX+2 , posY-1)){
if(this.pieceAt(posX+2, posY-1)){
if(!this.getPiece(posX+2, posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX+2, posY-1]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX+2, posY-1]);
}
}
if(this.boundryCheck(posX-2 , posY+1)){
if(this.pieceAt(posX-2, posY+1)){
if(!this.getPiece(posX-2, posY+1).isWhite){
this.whitePieces[i].legalMoves.push([posX-2, posY+1]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX-2, posY+1]);
}
}
if(this.boundryCheck(posX-2 , posY-1)){
if(this.pieceAt(posX-2, posY-1)){
if(!this.getPiece(posX-2, posY-1).isWhite){
this.whitePieces[i].legalMoves.push([posX-2, posY-1]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX-2, posY-1]);
}
}
if(this.boundryCheck(posX+1 , posY+2)){
if(this.pieceAt(posX+1, posY+2)){
if(!this.getPiece(posX+1, posY+2).isWhite){
this.whitePieces[i].legalMoves.push([posX+1, posY+2]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX+1, posY+2]);
}
}
if(this.boundryCheck(posX-1 , posY+2)){
if(this.pieceAt(posX-1, posY+2)){
if(!this.getPiece(posX-1, posY+2).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY+2]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX-1, posY+2]);
}
}
if(this.boundryCheck(posX+1 , posY-2)){
if(this.pieceAt(posX+1, posY-2)){
if(!this.getPiece(posX+1, posY-2).isWhite){
this.whitePieces[i].legalMoves.push([posX+1, posY-2]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX+1, posY-2]);
}
}
if(this.boundryCheck(posX-1 , posY-2)){
if(this.pieceAt(posX-1, posY-2)){
if(!this.getPiece(posX-1, posY-2).isWhite){
this.whitePieces[i].legalMoves.push([posX-1, posY-2]);
}
}
else{
this.whitePieces[i].legalMoves.push([posX-1, posY-2]);
}
}
}
}
for(let i=0; i<this.blackPieces.length; ++i){
if(this.blackPieces[i].letter == "K"){
this.blackPieces[i].legalMoves = [];
var posX = this.blackPieces[i].matrixPosition.x;
var posY = this.blackPieces[i].matrixPosition.y;
//console.log(posX+" "+posY);
if(this.pieceAt(posX-1,posY-1) & this.boundryCheck(posX-1, posY-1)){
if(this.getPiece(posX-1, posY-1).isWhite){
this.blackPieces[i].legalMoves.push([posX-1, posY-1]);
}
}
else{
if(this.boundryCheck(posX-1, posY-1)){
this.blackPieces[i].legalMoves.push([posX-1, posY-1]);
}
}
if(this.pieceAt(posX-1,posY) & this.boundryCheck(posX-1, posY)){
if(this.getPiece(posX-1, posY).isWhite){
this.blackPieces[i].legalMoves.push([posX-1, posY]);
}
}