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demo.html
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demo.html
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<!DOCTYPE html>
<html>
<head>
<title>trueChess | Open Source Chess framework.</title>
<meta charset="UTF-8">
<meta name="description" content="Free and Open Source chess framework for your next chess game project.">
<meta name="keywords" content="trueChess, chess game, game, board, pawn, king, knight, rook, bishop, chess board, white pawn, black pawn, check mate, ichess, chessboard, play chess, learn chess, develop chess, integrate chess board">
<meta name="author" content="Sonu Auti @sonuauti">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css"> <!-- required for animation, if set false then not required-->
<style type="text/css">
:root{
--cell1:#779556;
--cell2:#ebecd0;
--abort:#ff00006f;
--draw:#999;
--resign:#ffd7009f;
--cellhw:58px;
--theme_wood:#B06328;
--theme_darkwood:#855F38;
--theme_pink:#FF576B;
--theme_vibrant:#F25A04;
--theme_black:#222222;
--theme_default:#779556;
--borad_border:#444;
--wking:url('img/wking.png');
--wqueen:url('img/wqueen.png');
--wbishop:url('img/wbishop.png');
--wknight:url('img/wknight.png');
--wrook:url('img/wrook.png');
--wpawn:url('img/wpawn.png');
--bking:url('img/bking.png');
--bqueen:url('img/bqueen.png');
--bbishop:url('img/bbishop.png');
--bknight:url('img/bknight.png');
--brook:url('img/brook.png');
--bpawn:url('img/bpawn.png');
}
#startBtn:hover{
background: #95BB4A !important;
}
.btn{
font-size: 16px;border-radius: 8px;border: none;width: 120px;height: 50px;color: #fff;font-weight: bold;letter-spacing: 2px;margin: 10px;
}
.themes{
max-width: 20px;
min-width: 15px;
min-height: 15px;
border-radius: 15px;
padding: 4px;
margin: 10px;
display: inline-block !important;
}
.evenCol{
display: inline-block;
background-color: var(--cell2);
padding: 4px;
}
.oddCol{
display: inline-block;
background-color: var(--cell1);
padding: 4px;
}
.cell{
font-size: 14px;
padding: 1px;
overflow: hidden;
text-align: center;
min-width: var(--cellhw);
min-height: var(--cellhw);
max-width: var(--cellhw);
max-height: var(--cellhw);
}
.boardBg{
box-shadow: 0px 2px 5px 4px #ccc;
border-radius: 5px;
padding: 10px;
}
#controls{
margin: 5px;
max-width: 100%;
text-align: center;
}
.wking{
background: var(--wking);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.wqueen{
background: var(--wqueen);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.wbishop{
background: var(--wbishop);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.wknight{
background: var(--wknight);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.wrook{
background: var(--wrook);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.wpawn{
background: var(--wpawn);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.bking{
background: var(--bking);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.bqueen{
background: var(--bqueen);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.bbishop{
background: var(--bbishop);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.bknight{
background: var(--bknight);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.brook{
background: var(--brook);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.bpawn{
background: var(--bpawn);
background-repeat: no-repeat;
background-size: contain;
text-align:left;
}
.hnotations{
font-size: 13px;
float: right;
margin-top: 75%;
}
.vnotations{
font-size: 13px;
float: left;
}
</style>
<script type="text/javascript">
const truechess={memoryBank:[],
pieces:["king","queen","bishop","knight","rook","pawn"],
ruleBook:{
"king":{"moves":["step_fw","step_bw","step_dig","step_left","step_right"],"step_size_max":"1","step_size_min":"1"},
"queen":{"moves":["step_fw","step_bw","step_dig","step_left","step_right"],"step_size_max":"n","step_size_min":"1"},
"bishop":{"moves":["step_dig"],"step_size_max":"n","step_size_min":"1"},
"knight":{"moves":["step_knight"],"step_size_max":"3","step_size_min":"3"},
"rook":{"moves":["step_fw","step_bw","step_left","step_right"],"step_size_max":"n","step_size_min":"1"},
"pawn":{"moves":["step_fw","step_dig"],"step_size_max":"2","step_size_min":"1"}
},
uniCodeSym:{wking:'♔',wqueen:'♕',wbishop:'♗',wknight:'♘',wrook:'♖',wpawn:'♙',bking:'♚',bqueen:'♛',bbishop:'♝',bknight:'♞',brook:'♜',bpawn:'♟'},
aplhas:['a','b','c','d','e','f','g','h'],
updateCssPro:function(key,value){
let root_ = document.querySelector(':root');
root_.style.setProperty(key,value);
},
updateTheme:function(value){
let root_ = document.querySelector(':root');
root_.style.setProperty('--cell1',value);
window.localStorage['btheme']=value;
},
getStyle:function(key){
let root_ = document.querySelector(':root');
let rs = getComputedStyle(root_);
return rs.getPropertyValue(key);
},
createControls:function(){
let controls=document.getElementById("controls");
},
checkIfExists:function(pieceName,positions){
for (var key in positions) {
if (positions.hasOwnProperty(key)) {
let val = positions[key];
console.log("Input name "+pieceName+" -> "+val);
if (val==pieceName) {
break;
return true;
}
}
}
},
searchMemBank:function(memoryBank){
console.log(memoryBank['a8']);
},
local_config:[],
createChessBoard:function(boardId,config){
this.local_config=config;
if (window.localStorage['btheme']) {
this.updateTheme(window.localStorage['btheme']);
}else{
var root_ = document.querySelector(':root');
var rs = getComputedStyle(root_);
this.updateTheme(rs.getPropertyValue('--'+config.boardTheme));
}
var chessboard=document.getElementById(boardId);
if (config.showBorder==true) {
chessboard.style.border="2px solid #444";
}
var table=document.createElement('div');
table.setAttribute("id","table");
chessboard.appendChild(table);
if (config.isDraggable=true) {
this.addDrag();
}
//check the width of main div and calculate the cell size
var hw = chessboard.style.width.split("px")[0];
if (hw<150) {
hw=150;
chessboard.style.width='150px';
}else if (hw<=300) {
config.showBoardNotations=false;
}
//console.log(hw);
this.updateCssPro('--cellhw',((hw/8)-16)+"px");
var maxRowCol=8;
var notationNum=8;
var numNotations=['8','7','6','5','4','3','2','1'];
for (var row = 0; row <maxRowCol; row++) {
var tr=document.createElement('div');
tr.style.marginTop="-2px";
table.appendChild(tr);
for (var icol = 0; icol <maxRowCol; icol++) {
acol=this.aplhas[icol];
ntrow=numNotations[row];
var pieceName='no';
var squareId=(acol+""+ntrow);
//calculate the positions
if (config.position=='start') {
pieceName=this.getInitialPos(ntrow,acol);
}else if(isObject(config.position)){
//console.log('object is here');
for (var key in config.position) {
if (config.position.hasOwnProperty(key)) {
var val = config.position[key];
// console.log(val);
if (squareId==key) {
pieceName=val;
}
}
}
}
//store the initial piece information in memory bank
this.memoryBank[squareId]=pieceName;
var td=document.createElement('div');
td.setAttribute("id",squareId);
if (row%2==0) {
if (icol%2==0) {
td.className = 'evenCol';
}else{
td.className = 'oddCol';
}
}else{
if (icol%2==0) {
td.className = 'oddCol';
}else{
td.className = 'evenCol';
}
}
var notationVerticals='';
var notationHorizontal='';
var notationColor='gray';
if(config.showBoardNotations==true){
if (icol==0) {
notationVerticals=notationNum--;
}
if (row==7) {
notationHorizontal=this.aplhas[icol];
}
if (td.className=='evenCol') {
notationColor='--cell1';
}else{
notationColor='--cell2';
}
}
if (pieceName!='no') {
var real_div=document.createElement("div");
if (config.lockMoves!=true) {
if (config.isDraggable==true) {
real_div.setAttribute("draggable",true);
}
}
if (config.displayUnicodeSymbols==true) {
this.updateCssPro("--wrook",uniCodeSym[pieceName]);
//console.log(uniCodeSym[pieceName]);
}
if (config.imgSrc && config.imgSrc!="") {
this.updateCssPro("--"+pieceName,"url('"+config.imgSrc+pieceName+".png')");
//console.log(uniCodeSym[pieceName]);
}
if (config.animation==true) {
real_div.className=pieceName+" cell animated bounceIn";
}else{
real_div.className=pieceName+" cell";
}
}else{
var real_div=document.createElement("div");
real_div.setAttribute("draggable",false);
if (config.animation==true) {
real_div.className='cell animated';
}else{
real_div.className='cell animated';
}
}
real_div.setAttribute("id",(acol+"_"+ntrow));
if (config.lockMoves!=true) {
real_div.onclick=function(e){
squareId=e.target.id.split("_")[0]+""+e.target.id.split("_")[1];
window.truechess.onCellTap(e.target.id,squareId);
};
}else{
real_div.setAttribute("draggable",false);
}
if (config.showBoardNotations) {
let span1=document.createElement("span");
span1.innerHTML=notationVerticals;
span1.style.color=this.getStyle(notationColor);
span1.className="vnotations";
let span2=document.createElement("span");
span2.innerHTML=notationHorizontal;
span2.style.color=this.getStyle(notationColor);
span2.className="hnotations";
real_div.appendChild(span1);
real_div.appendChild(span2);
//console.log(notationColor);
}
td.appendChild(real_div);
tr.appendChild(td);
}
}
},
getInitialPos:function(row,col){
let ptype = 'no'; //not occupied
if (row==8 || row ==7) {
ptype='b';
}else if (row==1 || row ==2) {
ptype='w';
}
let algebricSqr= (col+""+row);
//console.log(algebricSqr);
//this is for rook
if (algebricSqr=="a8" || algebricSqr=="h8" || algebricSqr=="a1" || algebricSqr=="h1") {
return ptype+""+this.pieces[4];
}
//this is for knight
if (algebricSqr=="b1" || algebricSqr=="b8" || algebricSqr=="g1" || algebricSqr=="g8") {
return ptype+""+this.pieces[3];
}
//this is bishop
if (algebricSqr=="c1" || algebricSqr=="c8" || algebricSqr=="f1" || algebricSqr=="f8") {
return ptype+""+this.pieces[2];
}
//this is for queen
if (algebricSqr=="d1" || algebricSqr=="d8") {
return ptype+""+this.pieces[1];
}
//this if king
if (algebricSqr=="e1" || algebricSqr=="e8") {
return ptype+""+this.pieces[0];
}
//this if for pawn
if (row==2 || row==7) {
return ptype+""+this.pieces[5];
}else{
return "no";
}
},
cleanup:function(boardId){
if (document.getElementById("table")) {
document.getElementById("table").remove();
}
this.createChessBoard(boardId,local_config);
},animateView:function(viewId,animateClass){
//console.log('animation of view '+viewId);
let e=document.getElementById(viewId);
//console.log(e.classList.contains(animateClass));
if (e.classList.contains(animateClass)) {
e.classList.remove(animateClass);
setTimeout(function(){
e.classList.add(animateClass);
},50);
}else{
e.classList.add(animateClass);
}
setTimeout(function() {
e.classList.remove(animateClass);
}, 300);
},onCellTap:function(eleId,squareId){
this.animateView(eleId,'bounceIn');
this.checkRule(squareId,eleId);
},
/**
update the cell symbol
**/
udpateCell:function(eleId,data){
document.getElementById(eleId).className=data;
},
isKingCheck:function(){
},
getPositions:function(){
return this.memoryBank;
},
moves:{start:false,end:false,ptype:'na',squareId:-1,startEleId:'',endEleId:'',data:''},
checkRule:function(squareId,eleId){
let pieceName=this.memoryBank[squareId];
if (pieceName!="no" && this.moves.start==false) {
console.log('First tap at '+pieceName);
this.moves.start=true;
this.moves.end=false;
this.moves.ptype=pieceName; //store first position
this.moves.squareId=squareId;
this.moves.startEleId=eleId;
this.moves.data=document.getElementById(this.moves.startEleId).className;
if (this.local_config.onDragStart) {
this.local_config.onDragStart(eleId);
}
}else if (this.moves.end==false && this.moves.start==true) {
console.log('second tap at '+pieceName);
if (this.local_config.onDragStop) {
this.local_config.onDragStop(eleId);
}
if (this.moves.ptype[0]==this.memoryBank[squareId][0]) {
console.log('trying to capture own pieces');
this.moves.start=false;
return;
}else if(pieceName=="wking" || pieceName=="bking"){
console.log('Kind can not be captured');
this.moves.start=false;
return;
}
this.memoryBank[squareId]=this.moves.ptype; //update position with last
this.memoryBank[this.moves.squareId]='no';
this.moves.endEleId=eleId;
if (this.moves.ptype[0]=="w" && this.memoryBank[squareId][0]=="b") {
//capture move
this.udpateCell(this.moves.startEleId,document.getElementById(this.moves.endEleId).className);
}else{
//no capture move
this.udpateCell(this.moves.startEleId,"cell");
}
this.udpateCell(this.moves.endEleId,this.moves.data);
if (this.local_config.isDraggable==true) {
document.getElementById(this.moves.endEleId).setAttribute("draggable",true);
document.getElementById(this.moves.startEleId).setAttribute("draggable",false);
}
this.local_config.onPositionUpdate(this.moves.startEleId,this.moves.endEleId,this.moves.ptype);
this.moves={start:false,end:true,ptype:'no',squareId:-1,startEleId:'',endEleId:'',data:''};
}else {
if (this.moves.start==false) {
console.log('Not selected');
}else{
console.log('Invalid move, please check');
}
this.moves={start:false,end:true,ptype:'no',squareId:-1,startEleId:'',endEleId:'',data:''};
}
},
isObject:function(obj){
return obj !== undefined && obj !== null && obj.constructor == Object;
},
//drag functions
dragObj:{dragstart:'',dragend:''},
dragOnCellTap:function(eleId,squareId,isStart){
if (isStart && this.dragObj.dragstart!=squareId) {
this.dragObj.dragstart=squareId;
this.onCellTap(eleId,squareId);
}else if(!isStart){
this.dragObj.dragend=squareId;
this.onCellTap(eleId,squareId);
}
},
highLightBox:function(event,isShadow){
if (event.target.id[1]=="_") {
if (!isShadow) {
console.log('remove border for '+event.target.id);
event.target.style.boxShadow="none";
}else{
event.target.style.boxShadow="0px 0px 2px 2px #ccc";
}
}
},
addDrag:function(){
//console.log(this);
document.addEventListener("dragstart", function(event) {
console.log('drag started ->'+event.target.id);
window.truechess.dragOnCellTap(event.target.id,event.target.id[0]+""+event.target.id[2],true);
});
document.addEventListener("dragend", function(event) {
console.log('into dragend '+event.target.id);
if (event.target.id[1]=="_") {
console.log('remove border for '+event.target.id);
window.truechess.highLightBox(event,false);
}
console.log(window.truechess.dragObj);
window.truechess.dragObj={dragstart:'',dragend:''};
});
document.addEventListener("dragenter", function(event) {
console.log('drag enter over -> '+event.target.id);
if (event.target.id[1]=="_") {
window.truechess.highLightBox(event,true);
}
});
document.addEventListener("dragover", function(event) {
event.preventDefault();
});
document.addEventListener("dragleave", function(event) {
console.log('drag leave '+event.target.id);
if (event.target.id[1]=="_") {
window.truechess.highLightBox(event,false);
}
});
document.addEventListener("drop", function(event) {
event.preventDefault();
console.log('into drop target '+event.target.id);
if (event.target.id[1]=="_") {
window.truechess.dragOnCellTap(event.target.id,event.target.id[0]+""+event.target.id[2],false);
console.log('finished '+event.target.id);
window.truechess.highLightBox(event,false);
}
});
}
};
window['truechess']=truechess;
</script> <!-- main js file -->
</head>
<body style="text-align: center;font-size: 16px;">
<div id="chessBoard1" style="width: 360px; margin: auto;"> </div>
<div style="box-shadow: 0px 0px 2px 2px #eee;
border-radius: 10px;margin-left: 12px;display: inline-block;margin-top: 10px;">
<div id="theme_wood" class="themes animated" style="background: var(--theme_wood);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
<div id="theme_darkwood" class="themes animated" style="background: var(--theme_darkwood);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
<div id="theme_pink" class="themes animated" style="background: var(--theme_pink);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
<div id="theme_vibrant" class="themes animated" style="background: var(--theme_vibrant);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
<div id="theme_default" class="themes animated" style="background: var(--theme_default);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
<div id="theme_black" class="themes animated" style="background: var(--theme_black);" onclick="truechess.updateTheme(document.getElementById(this.id).style.background);"></div>
</div>
<script type="text/javascript">
function initiChess(){
var config = {
showBoardNotations:true, //show board notations 1-8, a-f
position:"start", // either start or position array
orientation:'default', //top side down
isDraggable:true, //drag element
isFocus:false, //
boardTheme:'theme_default', //board color
showClock:true, //hide or show clock
gameTime:'10', //game time
imgSrc:'img/', //absolute path of icons
displayUnicodeSymbols:false, //display web friendly icons
showCapturedPieces:true, //show captured pieces
showBoardWithPieces:true, //show board only
animation:true, //show animation
showBorder:false, //show or hide board border
lockMoves:false,
onPositionUpdate:function(startPos,endPos,element){
console.log('This is from callback function '+startPos+","+endPos+","+element);
console.log(truechess.getPositions());
},
onDragStart:function(startPos){
console.log('Position started at '+startPos);
},
onDragStop:function(endPos){
console.log('Position end at '+endPos);
},
}
//console.log(window.truechess);
truechess.createChessBoard('chessBoard1',config);
//console.log(truechess.getPositions());
}
initiChess();
</script>
</body>
</html>