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bug.js
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bug.js
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// Javascript bughouse viewer v 1.01 (C) Sergiy Vasylkevych aka Fermy on FICS
// Feel free to use/copy/modify/distribute
// This update 02.21.2002
function debug()
{
var tmp='<form name="debug"><p><textarea name="shit" value="" rows="5" cols="70"></textarea></p></form>';
document.writeln(tmp);
}
function Init()
{
//debug();
//Defaults that one may want to change.
DEFAULT_BSQ_COL= "#808080"; //'#A28964';
DEFAULT_WSQ_COL= "#E4E4E4"; //'#DDC7AC'; '#EEC8B0';
BPGN_LINE_SIZE=79;
RDO='[';
RDC=']'; /* opening and closing delimiters that embrace ratings of players in viewer display */
DROPBAR=new Array("br","bq","bb","bn","bp","wp","wb","wn","wr","wq");
PLAY_DELAY=100;
MAX_NEXT=20;
NEXT_WIDTH=14;
BPGN_ROOT=0 ; // BPGN root node index
BPGN_BOARD_A1 = 'A'; // BPGN board 'A'
BPGN_BOARD_A2 = 'a' ; // BPGN board 'a'
BPGN_BOARD_B1 = 'B' ; // BPGN board 'B'
BPGN_BOARD_B2 = 'b' ; // BPGN board 'b'
BPGN_BOARD_ASTR1 = "A" ; // BPGN board 'A' string
BPGN_BOARD_ASTR2 = "a" ; // BPGN board 'a' string
BPGN_BOARD_BSTR1 = "B" ; // BPGN board 'B' string
BPGN_BOARD_BSTR2 = "b" ; // BPGN board 'b' string
BPGN_MOVE_DSTR = "." ; // BPGN move dot string
BPGN_ANNOTATION= 'A'; // BPGN annotation symbol
BPGN_NOTE = 'C'; // BPGN note symbol
BPGN_OMITED_TIME= - 5;
BPGN_VIEWER_DIR='';
BPGN_NORMAL=0;
BPGN_STRING=1;
BPGN_INTEGER=2;
BPGN_COMMENT1=3;
BPGN_COMMENT2=4;
BPGN_NAG=5;
BPGN_SYMBOL=6;
BPGN_WHITE_WINS="1-0";
BPGN_BLACK_WINS="0-1";
BPGN_DRAW="1/2-1/2";
BPGN_UNKNOWN="*";
BPGN_WHITE_WINS="1-0" ; // BPGN white wins string
BPGN_BLACK_WINS ="0-1" ; // BPGN black wins string
BPGN_DRAW ="1/2-1/2"; // BPGN draw string
BPGN_UNKNOWN ="*" ; // BPGN unknown result string
BPGN_EVENT ="Event" ; // BPGN event tag string
BPGN_SITE ="Site" ; // BPGN site tag string
BPGN_DATE ="Date" ; // BPGN date tag string
BPGN_WHITEA ="WhiteA" ; // BPGN whitea tag string
BPGN_BLACKA ="BlackA" ; // BPGN blacka tag string
BPGN_WHITEB ="WhiteB" ; // BPGN whiteb tag string
BPGN_BLACKB ="BlackB" ; // BPGN blackb tag string
BPGN_WHITEAELO ="WhiteAElo" ; // BPGN whiteaelo tag string
BPGN_BLACKAELO ="BlackAElo" ; // BPGN blackaelo tag string
BPGN_WHITEBELO ="WhiteBElo" ; // BPGN whitebelo tag string
BPGN_BLACKBELO ="BlackBElo" ; // BPGN blackbelo tag string
BPGN_TIMECTRL ="TimeControl" ; // BPGN timecontrol tag string
BPGN_RESULT ="Result" ; // BPGN result tag string
DEFAULT_EVENT ="fics rated bughouse match";
DEFAULT_SITE ="fics, Oklahoma City, OK USA";
DEFAULT_DATE ="????.??.??";
DEFAULT_WHITEA ="WhiteA";
DEFAULT_BLACKA ="BlackA";
DEFAULT_WHITEB ="WhiteB";
DEFAULT_BLACKB ="BlackB";
DEFAULT_TIME ="180";
DEFAULT_INC ="0";
DEFAULT_RATING ="++++";
DEFAULT_REASON ="{*}";
DEFAULT_RESULT ="*";
TAB_ASCII_NUM = '\t';
CR_ASCII_NUM='\r';
LF_ASCII_NUM='\n';
NEW_PAR='þ';
ERROR_NONE = 0 // No error
ERROR_INCOMPLETE = 1 // Incomplete BPGN file
ERROR_MISSING_NOTE = 2 // Missing note or annotation
ERROR_INVALID_NOTE = 3 // Invalid note or annotation
ERROR_INVALID_ANNOTATION = 4 // Invalid annotation
ERROR_MISSING_BRACKET = 5 // Missing '}'
ERROR_MISSING_MOVE_NUMBER =6 // Missing move number
ERROR_MISSING_BOARD_SYMBOL =7 // Missing board symbol
ERROR_INVALID_BOARD_SYMBOL =8 // Invalid board symbol
ERROR_INVALID_MOVE_NUMBER =9 // Invalid move number
ERROR_MISSING_MOVE_DOT = 10 // Missing '.'
ERROR_INVALID_MOVE_DOT = 11 // Missing '.'
ERROR_MISSING_MOVE = 12 // Missing move
ERROR_INVALID_MOVE = 13 // Invalid move
ERROR_MISSING_TIME = 14 // Missing time
ERROR_INVALID_TIME = 15 // Invalid time
ERROR_MISSING_RESULT = 16 // Missing result
ERROR_INVALID_RESULT = 17 // Invalid game result
ERROR_DOUBLE_NOTE = 18 // Double note
ERROR_DOUBLE_ANNOTATION = 19 // Double annotation
ERROR_MISSING_END_VARIATION= 20 // Missing ')'
CASTLE_BAD = /0-0/gi;
LCASTLE_BAD=/0-0-0/gi;
NUMB=/[0-9]/;
SYMB=/\w|[+#=:\-@]/;
LETT=/[a-zA-z]/;
RELOAD_BPGN=''; //global variable containing reference to the loadbpgn window.
RELOAD_BPGNVIEWER=''; //global variable containing the name of the viewer that called loadbpgn window.
BPGN_FILE_NAME= new Array();//global array containing names of bpgn files to read in readfile.shtml.
BPGN_FILE_VIEWER=new Array(); //global array containing names of the viewers that requested to read files.
READ_INTERVAL=false; //timer used to read files;
READ_WINDOW=false;
SAVE_STR='';
IE = ((navigator.appName.toLowerCase()) =="microsoft internet explorer")?true:false;
}
function readfile(viewer,file)
{
BPGN_FILE_NAME[BPGN_FILE_NAME.length]=file;
BPGN_FILE_VIEWER[BPGN_FILE_VIEWER.length]=viewer;
if (!READ_INTERVAL) {READ_INTERVAL=setInterval("loadfile();",100);};
};
function loadfile()
{var i; var n=BPGN_FILE_NAME.length;
if (n==0) {clearInterval(READ_INTERVAL); READ_INTERVAL=false; return;};
var tmp=BPGN_FILE_NAME[0]; for (i=0;i<n-1;i++) BPGN_FILE_NAME[i]=BPGN_FILE_NAME[i+1]; BPGN_FILE_NAME[n-1]=false;
BPGN_FILE_NAME.length=n-1;
if ((!READ_WINDOW)||(READ_WINDOW.closed)) {READ_WINDOW=window.open(BPGN_VIEWER_DIR+'readfile.shtml?'+tmp,'bpgnfilereadwindow','width=300,height=300');};
READ_INTERVAL=setInterval("loadfile();",100);
}
function setvar(text)
{var i; var n=BPGN_FILE_VIEWER.length;
var viewer=BPGN_FILE_VIEWER[0]; for (i=0;i<n-1;i++) BPGN_FILE_VIEWER[i]=BPGN_FILE_VIEWER[i-1];
BPGN_FILE_VIEWER[n-1]=false; BPGN_FILE_VIEWER.length=n-1;
var v=eval(viewer);
v.reloadgame(text,"","");
READ_WINDOW.close();
}
function streplace(text,ch1,ch2)
{
var found=true;
var j=0;
while (found)
{
j=text.indexOf(ch1);
if (j<0) {found=false;}
else {text=text.substr(0,j)+ch2+text.substr(j+1,text.length); j++};
}
return text
}
function generatesavehtml()
{ var tmp;
tmp='<html><head><title>Save BPGN</title></head>'
tmp+='<body bgcolor="#FFFFFF" text="#000000">';
tmp+='<p align="center"><font color="#C0C0C0" size="6">Save BPGN</font></p>';
tmp+='<form name="saveform">';
tmp+='<p><textarea name="bpgn" rows="10" cols="80"></textarea></p>';
tmp+='<p><strong>BFEN A:</strong><input type="text" size="70"';
tmp+=' name="bfena"></p>';
tmp+='<p><strong>BFEN B:</strong><input type="text" size="70"';
tmp+=' name="bfenb"></p>';
tmp+=' <p>Here is BPGN text for the game and BFEN for the current';
tmp+=' position. Cut&Paste them into your favorite text editor';
tmp+=' and save. Click "Close" button to close this';
tmp+=' window. </p>';
tmp+=' <p><input type="button" name="confirm" value="Close"';
tmp+=' onclick="window.close();"></p>';
tmp+='</form></body></html>';
return tmp;
}
function generateloadhtml(viewer)
{
var tmp;
tmp='<html><head><title>Load BPGN</title></head>'
tmp+='<body bgcolor="#FFFFFF" text="#000000">';
tmp+='<p align="center"><font color="#C0C0C0" size="6">Load Game</font></p>';
tmp+='<p>Here you may load a bughouse/crazyhouse/chess game into the viewer. Also you may setup initial position! Press "Load" button when you are done. You may leave blank any field</p>';
tmp+=' <p>Paste (or type in) moves in <strong>BPGN</strong> format in the box below. You may paste the whole bgpn file (with tags) or just moves. </p>';
tmp+='<form name="loadform">';
tmp+='<p><textarea name="bpgn" rows="5" cols="70"></textarea></p>';
tmp+='<p>If you want to setup position different from the initial, paste it (or type in) below. Position must be in bfen format.</p>';
tmp+='<p><strong>BFEN A:</strong><input type="text" size="70"';
tmp+=' name="bfena"></p>';
tmp+='<p><strong>BFEN B:</strong><input type="text" size="70"';
tmp+=' name="bfenb"></p>';
tmp+='<p><input type="button" name="confirm" value="Load" ';
tmp+='onClick="opener.assreloadgame('+"'"+viewer+"'"+',document.loadform.bpgn.value,document.loadform.bfena.value,document.loadform.bfenb.value);">';
tmp+=' <input type="button" name="confirm" value="Close"';
tmp+=' onclick="window.close();"></p>';
tmp+='</form></body></html>';
return tmp;
}
function killleadspace(str)
{
var i;
str=' '+str;
for (i=0;str.charAt(i)==" ";i++);
return str.substr(i);
}
function killtailspace(str)
{
var i;
for (i=str.length-1;str.charAt(i)==" ";i--);
return str.substring(0,i+1);
}
function isempty (square)
{
var st=this.pos[square];
return (st.length==0)? true:false;
}
function bugmove()
{
this.board=''; //"a" or "b"
this.side=''; //'w' or 'b'
this.frompiece='';//piece that moves
this.fromsquare=-1; //starting square of the frompiece
this.tosquare=-1; // destination square of the frompiece
this.topiece=''; // captured piece
this.backupenpassant=''; //
this.backupshortcastle=''; //
this.backuplongcastle='';
this.backuptime=0;
this.buckuptime1=0;
}
function getdest(move)
{
var cfile='abcdefgh';
var crank='12345678';
var i; var rank='';var file=''; var tmp;
for(i=move.length-1;i>0;i--) {
if (crank.indexOf(move.charAt(i))>-1) {rank=move.charAt(i);break;}
};
file=move.charAt(i-1); tmp=file.toLowerCase();
var res= file+rank;
return ((cfile.indexOf(tmp)<0)||(rank=''))? '': res;
}
function whosmove(turn)
{
return (turn==turn.toLowerCase())? 'b':'w'; /*check who's to move*/
}
function incheck(whomove,dest)
{var i; var piece;
op=othercolor(whomove);
for (i=0;i<64;i++) {
if (this.pos[i].charAt(0)!=op) {continue;};
piece=this.pos[i].charAt(1);
if (this.legalmove(piece,op,i,dest,1)) { return true;};
};
return false;
}
function enpassantvalid(dest)
{ return (dest==this.enpasssq)? true: false; }
function legalmove(piece,whomove,src,dest,mode)
{
var srcp=this.pos[src];
srcp=srcp.toLowerCase();
if ((mode!=1)&&(srcp!=(whomove+piece))) {return false;};
var sfile=getfile(src); var srank=getrank(src);
var dfile=getfile(dest); var drank=getrank(dest);
var dir; var i;
if (piece=='p'){
dir= (whomove=='w')? 1: -1;
if((dfile==sfile)&&(srank+dir==drank)&&(this.isempty(dest))) {return true;} //noncapture one square ahead
if ((dfile==sfile)&&(whomove=='w')&&(srank==2)&&(drank==4)&&(this.isempty(dest+8))&&(this.isempty(dest))) return true;
if ((dfile==sfile)&&(whomove=='b')&&(srank==7)&&(drank==5)&&(this.isempty(dest-8))&&(this.isempty(dest))) return true; //noncapture 2 sq's ahead
if ((Math.abs(dfile-sfile)==1)&&(srank==drank-dir)&&((this.pos[dest]!='')|| (this.enpassantvalid(dest)))) return true;
/* capture. We don't check if we capture our own piece or opponents */
return false;
}
if (piece=='k') {
if ((Math.abs(dfile-sfile)<=1)&&(Math.abs(drank-srank)<=1)&&(src!=dest)) {return true;}
else {return false};
}
if (piece=='n') {
if ((Math.abs(dfile-sfile)+Math.abs(drank-srank)==3)&&(Math.abs(drank-srank)>0)&&(Math.abs(dfile-sfile)>0)) return true;
return false;
}
if (piece=='r'){
if (sfile==dfile){
dir=(dest>src)? 1: -1;
for (i=1; i<Math.abs(drank-srank);i++){ if (!this.isempty(src+8*dir*i)) {return false};};
return true;
};
if (srank==drank){
dir=(dest>src)? 1: -1;
for (i=1; i<Math.abs(dfile-sfile);i++){ if (!this.isempty(src+dir*i)) {return false};};
return true;
};
return false;
}
if (piece=='b') {
if (Math.abs(dfile-sfile)!=Math.abs(drank-srank)) return false;
dirf= (sfile>dfile)? -1:1;
dirr= (srank>drank)? 1:-1;
for (i=1;i<Math.abs(drank-srank);i++){ if (!this.isempty(src+(8*dirr+dirf)*i)) {return false};};
return true;
}
if (piece=='q') {return ((this.legalmove('b',whomove,src,dest,1))||(this.legalmove('r',whomove,src,dest,1)));};
return false; /* should never get here */
}
function getrank(ind)
{ var ss=ind - (ind%8);
return (8-ss/8);
}
function getfile(ind)
{return (ind % 8);
}
function findmove(piece,whomove, spec,dest)
{var cfile='abcdefgh';
var crank='87654321'; /* strange order because index 0 corresposnds to a8 in array this.pos */
var rmin=0; var rmax=8; var fmin=0; var fmax=8;
var r; var f; var c; var f; var c2; var src=-1; var king; var dp; var sp;
var quit=false;
piece=piece.toLowerCase();
spec=spec.toLowerCase();
if(spec.length!= 0 ) {/* translate specifier into search restriction */
c = spec.charAt(0);
if(cfile.indexOf(c)>=0) {fmin=cfile.indexOf(c); fmax=fmin+1;}
else {rmin=crank.indexOf(c); if(rmin>=0) {rmax=rmin+1} else {rmin=0};};
if(spec.length >1 ) {c2 = spec.charAt(1);
if (crank.indexOf(c2)>=0) {rmin=crank.indexOf(c2); rmax=rmin+1};
}
}
/* now find possible move withing restrictions */
var found=false;
for (f=fmin;f<fmax;f++){
for (r=rmin;r<rmax;r++){
src=8*r+f;
if (!this.legalmove(piece,whomove,src,dest,0)) {continue;}
else {
king=eval('this.king'+whomove);
dp=this.pos[dest]; sp=this.pos[src];
this.pos[src]='';
this.pos[dest]=whomove+piece;
if (piece == 'k') king=dest;
if (!this.incheck(whomove,king)) {found=true;quit=true;};
this.pos[src]=sp; this.pos[dest]=dp;
};
if (quit==true) break;
}; if (quit==true) {break;};}
if (!found) return -1;
src=8*r+f;
if (src>63) {return -1} ; /* no moves found */
if (piece=='p'){/* check for promotion and enpassant*/
if (((whomove=='w')&&(getrank(dest)==8))||((whomove=='b')&&(getrank(dest)==1))) {src+=100}; //promotion
if ((f!=getfile(dest)) && (this.isempty(dest))) {src+=200}; //enpassant
}
return src;
}
function promdialog(wh)
{
return (confirm('Promote to Q? \n Cancel will promote to N'))? 'q':'n';
}
function getpromotion(wh, move,dest)
{
var i=move.indexOf(dest);var t=move.length; var j;
var prompiece='qnrb';
if ((i<0)||(i>t-3)) return this.promdialog(wh);
for (j=i+2;j<t;j++) {if (move.charAt(j)!='=') break;};
var c=move.charAt(j);c=c.toLowerCase();
j=prompiece.indexOf(c);
return ((j<0)?this.promdialog(wh):c);
}
function decryptmove (bd,move)
{/* returns bugmove object mv. If something is wrong false is returned;
if this is a drop move fromsquare is set to 65; if this is castling fromsquare is set to o-o or o-o-o; if this is En passant frompiece is set to wpx or bpx; if this is promotion fromsquare is set to wpq, wpr, etc,;very little error checking is done. moves better be valid */
var cfile='abcdefgh';
var crank='12345678';
var drop='rnbqp';
var cpiece='rnbqk';
var mv=new bugmove();
var piece;
move=extractmove(move);
mv.board=bd.turn.toLowerCase();
whomove=whosmove(bd.turn);
mv.side=whomove;
move=killleadspace(killtailspace(move));
// castle?
var tmp=move.toLowerCase();
if((tmp.indexOf("o-o-o")!= -1 )||(move.indexOf("0-0-0")!= -1 ))
{
mv.fromsquare = 'o-o-o';
mv.frompiece= whomove+'k';
return mv;
}
if((tmp.indexOf("o-o")!= -1 )||(move.indexOf("0-0")!= -1 ))
{
mv.fromsquare = 'o-o';
mv.frompiece= whomove+'k';
return mv;
}
var dest=getdest(move); /* dest is a destination square, e.g. 'c7') */
if (dest=='') return false;
var des=sqtoind(dest);
if ((bd.pos[des].charAt(0)==whomove)&&(this.rule=='international')) return false;
mv.tosquare=des;
mv.topiece=bd.pos[des];
// drop move?
if(move.length < 2) {return false;}
if( move.charAt(1) == '@' ) {
if((move.length < 4)||(bd.pos[mv.tosquare]!='')) return false;
mv.fromsquare = 65;
piece= move.charAt(0); piece=piece.toLowerCase();
if (drop.indexOf(piece)<0) return false;
if ((piece=='p')&&((dest.charAt(1)==8)||(dest.charAt(1)==1))) return false;
mv.frompiece=whomove+piece;
return mv;
};
// find source square specifier. for ex, in move Raxd1 modifier is 'a'
var endspec=move.indexOf(dest)-1;
if ((move.charAt(endspec)=='x')||(move.charAt(endspec)=='X')) endspec--;
var srcspec=move.substring(1,endspec+1);
// is it a pawn move?
piece=move.charAt(0);
tmp=srcspec;
if(cfile.indexOf(piece)>= 0)
{
if (srcspec.length<2) {srcspec=piece+srcspec};
var res=bd.findmove('p',whomove,srcspec,des);
if (res>=0) /* yes this is pawn move */
{
mv.fromsquare=res % 100;
mv.frompiece= (res>199)? whomove+'px':whomove+'p';/*check if the move is enpassant */;
if ((res<200)&&(res>99)) {mv.frompiece=whomove+'p'+this.getpromotion(whomove,move,dest);};
return mv;
};
// we are here if it's bishop move, but i won't use this.
};
srcspec=tmp;
res=bd.findmove(piece,whomove,srcspec,des);
if (res<0) return false; /* oh shit, illegal move */
mv.fromsquare=res;
mv.frompiece=bd.pos[res];
return mv;
}
function preload ( path )
{ var gifs = new Array();
for ( var i=0; i< 16; i++)
gifs[i]= new Image();
gifs[0].src=path+'wkd.gif';
gifs[1].src=path+'bkd.gif';
gifs[2].src = path + "wbd.gif";
gifs[3].src = path + "wnd.gif";
gifs[4].src = path + "wrd.gif";
gifs[5].src = path + "wqd.gif";
gifs[6].src = path + "wpd.gif";
gifs[7].src = path + "bnd.gif";
gifs[8].src = path + "bbd.gif";
gifs[9].src = path + "brd.gif";
gifs[10].src = path + "bqd.gif";
gifs[11].src = path + "bpd.gif";
gifs[12].src= path+"d.gif";
gifs[13].src=path+"mv.gif";
gifs[14].src=path+"b.gif";
gifs[15].src=path+"w.gif";
}
function Init1 ( path, filebg, wsq,bsq )
{
var gifpath= new Array();
gifpath["wbd"] = path + "wbd.gif";
gifpath["wnd"] = path + "wnd.gif";
gifpath["wrd"] = path + "wrd.gif";
gifpath["wqd"] = path + "wqd.gif";
gifpath["wpd"] = path + "wpd.gif";
gifpath["bnd"] = path + "bnd.gif";
gifpath["bbd"] =path + "bbd.gif";
gifpath["brd"] = path + "brd.gif";
gifpath["bqd"] = path + "bqd.gif";
gifpath["bpd"] = path + "bpd.gif";
gifpath["wkd"]= path+ "wkd.gif";
gifpath["bkd"]= path+ "bkd.gif";
gifpath["d"] = path + "d.gif";
gifpath["mv"]= path + "mv.gif";
gifpath["nmv"]= path + "d.gif";
if (filebg) {gifpath['w']=path+ "w.gif"; gifpath['b']=path+"b.gif";}
else {gifpath['w']=wsq; gifpath['b']=bsq;};
return gifpath;
}
function fixnumber(the_number) //adds leading zero to a one-digit number
{
if (the_number < 10)
{
the_number = "0" + the_number;
}
return the_number;
}
function indelim(str, pos, del1, del2) /* returns a piece of a string str that sits between first occurences of delimiters del1 and del2 after position pos in str */
{
var p1=str.indexOf(del1,pos);
var p2=str.indexOf(del2,p1+1);
var p3=str.indexOf(']',pos);
if (p3<p2) {return '';};
var value=str.substring(p1+1,p2);
return value;
}
function totime(num)
{
var sec= num % 60;
var min = (num - sec)/ 60;
var time= min + ':'+fixnumber(sec);
return time;
}
function extracttext(text)
{
var s;
var pos = text.indexOf('{');
if (pos<0) {pos=text.lastIndexOf(']')}
else {s=text.substring(0,pos); pos=s.lastIndexOf(']');};
s=text.substr(pos+1);
s=s.replace(LCASTLE_BAD,'o-o-o');
return s.replace(CASTLE_BAD,'o-o');
}
function bpgnheader(source, header) /* returns value of a bpgn header (header) in a bpgn text (source). Essentially looks for first occurence of substring header in the string source and returs whatever is in next " " after header */
{
header='['+header;
var pos=source.indexOf(header);
if (pos<0) {return '';};
pos=pos+header.length;
var value=indelim(source, pos, '"','"');
return value;
}
function insert (str1, ind1, str2) /* inserts string str2 into string str1 at index ind1 */
{
var tmp=str1.substr(ind1);
str1= str1.substr(0,ind1+1);
return (str1+str2+tmp);
}
function sqtoind (sq) /* returns an index in the array pos of a square sq on chess board (e.g. "c7") */
{
var fc=sq.charAt(0)
var rc=sq.charAt(1);
var cfiles='abcdefgh';
var t=cfiles.indexOf(fc);
var s= eval("8"*rc);
return (64-s+t);
}
function generatebfen ()
{
var i; var t; var ec=0; var res=''; var col=0; var p;
for (i=0;i<64;i++)
{
t=this.pos[i];
if (t=='') {
ec++;
if (col>=7) { res+=ec; ec=0;};
}
else {
if (ec>0) {res+=ec; ec=0;};
p=t.charAt(1);
if (p==p.toUpperCase()) {p=p+'~'};
p= (t.charAt(0)=='w')? p.toUpperCase(): p.toLowerCase();
res+=p;
};
col++; if (col>=8) {col=0;res+='/';};
};
res+=' '+whosmove(this.turn)+' '+this.wclock+' '+this.bclock;
return res;
}
function indtosq(ind)
{
var cfiles='abcdefgh';
var rank=getrank(ind);
var file=getfile(ind);
var res=cfiles.charAt(file)+rank;
return res;
}
function indtoind(ind, flip)
{
return (flip==0)? ind: (63-ind);
}
function drawhold()
{
var i;
var j;
var t;
var ind=this.syncpic();
if (this.flip==0)
{for (i=0;i<10;i++)
{if (this.hold[i]>0) { t=this.dropbar[i]+'d'; document.images[ind+64+i].src=this.gifs[t];}
else { document.images[ind+64+i].src=this.gifs["d"];};
}
}
else {for (i=0;i<10;i++)
{if (this.hold[i]>0) { t=this.dropbar[i]+'d'; document.images[ind+73-i].src=this.gifs[t];}
else { document.images[ind+73-i].src=this.gifs["d"];};
}
};
return;
}
function drawpos () /* draws a position and holding (pos and holding respectively) in the viewer, ind is the index of upper left corner of the board in the array document.images[]. That way function doesn't need to know the board name */
{
var i;
var st;
this.brefreshform();
var ind=this.syncpic();
if (this.flip==0) {
for (i=0; i<64;i++) { st=this.pos[i].toLowerCase()+'d'; document.images[ind+i].src=eval('this.gifs["'+st+'"]');}
}
else {for (i=0; i<64;i++) { st=this.pos[63-i].toLowerCase()+'d'; document.images[ind+i].src=eval('this.gifs["'+st+'"]');}};
this.drawhold();
return;
}
function refreshinfo()
{
if ((this.displaymode=='playback')||(this.displaymode=='diagram')) return;
var i; var j; var s=''; var bl=' ';
var n=this.BPGN[this.currentmove].nNext.length;
if (n>MAX_NEXT) n=MAX_NEXT;
var v=eval('window.document.'+this.viewername);
s=(this.currentmove==this.endnode)?this.cResult1 +' '+this.gameresult +'\n\n':'';
//document.debug.shit.value='';
v.comment.value=s+streplace(this.BPGN[this.currentmove].cNote,NEW_PAR,'\n');
bl=bl.substr(0,NEXT_WIDTH);
for (i=0;i<n;i++)
{
j=this.BPGN[this.currentmove].nNext[i];
s=this.BPGN[j].cMove+this.BPGN[j].cAnno;
s+=bl;
v.nextmove.options[i].text=s.substr(0,NEXT_WIDTH);
};
for (i=n;i<MAX_NEXT;i++) {v.nextmove.options[i].text=bl;};
v.nextmove.options[MAX_NEXT].text='XXXXXXXXXXX';
v.nextmove.options[0].selected=true;
}
function NODE()
{
this.nParent=BPGN_ROOT ; // Partner node index
this.nMove=0 ; // Move counter
this.cBoard=BPGN_BOARD_A1 ; // Board type ('A', 'a', 'B', or 'b')
this.cMove='' ; // Move string size (i.e. "e4")
this.cTime=''; // Time (i.e. "300")
this.cAnno=''; // Annotation (i.e. "!")
this.cNote=''; // Note (i.e. "Interesting move!")
this.nNext=new Array(); // Next size (next moves)
this.dmove=false; //decrypted move
}
function QUEUE(state, token)
{
this.nlaststate=state ; // token queue last state
this.cToken=token; // token queue token
}
// get new node
function BPGN_GetNewNode ()
{
var i=this.BPGN.length;
this.BPGN[this.BPGN.length]=new NODE();
return i;
}
// is token queue empty?
function BPGN_QueueIsEmpty ()
{
return (this.Queue.length == 0) ; //return this.nCount;
}
// insert into token queue
function BPGN_InsertQueue (nls, ct)
{
this.nError=ERROR_NONE;
this.Queue[this.Queue.length]=new QUEUE(nls,ct);
return true;
}
// remove from token queue
function BPGN_RemoveQueue ()
{var i;
var n=this.Queue.length;
if (n > 0)
{
this.nError = ERROR_NONE ;
var res=this.Queue[0];
for (i=0;i<n-1;i++) this.Queue[i]=this.Queue[i-1]; this.Queue[n-1]=false; this.Queue.length=n-1;
return res;
}
else
{
this.nError = ERROR_QUEUE_IS_EMPTY ;
return false;
};
}
function gettoken ()
{
var ni;
var ctmp;
var cttt;
var x;
var tmp;
if (!this.BPGN_QueueIsEmpty())
{
tmp=this.BPGN_RemoveQueue();
if (tmp!=false)
{
this.ctoken=tmp.cToken;
this.nlaststate=tmp.nlaststate;
return true ;
};
return false;
};
if ((this.ngamesize == 0) || (this.ngameindex > this.ngamesize))
// introduce ngamesize, ngameindex, ctoken;
{this.ctoken=""; return 0;};
ni = this.ngameindex - 1 ;
while (ni < this.ngamesize)
{
this.ctoken="";
ctmp="";
while (ni < this.ngamesize)
{
ni = ni + 1 ;
// normal state
// introduce this.nstate, this.cgame
x=this.cgame.charAt(ni);
if (this.nstate == BPGN_NORMAL)
{
if ((x== ' ')||(x == TAB_ASCII_NUM)||(x==CR_ASCII_NUM)||(x==LF_ASCII_NUM)) break ;
if ((x == '[') || (x == ']') ||
(x == '(') || (x == ')') ||
(x == '<') || (x == '>') ||
(x == '(') || (x == ')') ||
(x == '.') || (x == '*') ||
(x == '}'))
{this.ctoken = x ; break ;}
if (x == '"'){this.nstate = BPGN_STRING ; continue ;}
if (x == '0'){
if ((ni + 2) <= this.ngamesize)
{
if ((this.cgame.charAt(ni + 1) == '-') && (this.cgame.charAt(ni + 2) == '1'))
{this.ctoken="0-1"; ni = ni + 2 ;break ;}
}
}
if (x == '1')
{
if ((ni + 2) <= this.ngamesize)
{
if ((this.cgame.charAt(ni + 1) == '-') && (this.cgame.charAt(ni + 2) == '0'))
{this.ctoken="1-0"; ni = ni + 2 ; break ;}
}
if ((ni + 6) <= this.ngamesize)
{
if (this.cgame.substr(ni,7) == '1/2-1/2') {this.ctoken="1/2-1/2"; ni = ni + 6 ; break ;}
}
}
if (x.match(NUMB)){this.nstate = BPGN_INTEGER ; ctmp = x ;continue ;}
if (x == ';'){this.nstate = BPGN_COMMENT1 ;ctmp=""; break ;}
if (x == '{'){this.nstate = BPGN_COMMENT2 ;ctmp="{" ;break ;}
if (x == '$'){this.nstate = BPGN_NAG ;ctmp="$" ;continue ;}
if (x.match(LETT)){this.nstate = BPGN_SYMBOL ;ctmp = x ; continue ;}
}
// string token state
if (this.nstate == BPGN_STRING)
{
if (x == '\\')
{
if (ni < this.ngamesize)
{ni = ni + 1 ;
if (this.cgame.charAt(ni) == '"') {cttt = this.cgame.charAt(ni) ; ctmp+=cttt ; continue ;}
if (this.cgame.charAt(ni) == '\\') {cttt = this.cgame.charAt(ni) ;ctmp+=cttt ;continue ;}
cttt = '\\' ;cttt += this.cgame.charAt(ni) ;ctmp+=cttt ;continue ;
}
cttt = this.cgame.charAt(ni) ;ctmp +=cttt ; break ;
}
if (this.cgame.charAt(ni) == '"') break ;
cttt = this.cgame.charAt(ni) ; ctmp +=cttt ; continue ;
}
// integer token state
if (this.nstate == BPGN_INTEGER)
{
if ((this.cgame.charAt(ni) >= '0') && (this.cgame.charAt(ni) <= '9'))
{cttt = this.cgame.charAt(ni) ;ctmp+=cttt ;continue ;}
ni = ni - 1 ;break ;
}
// comment token state
if (this.nstate == BPGN_COMMENT2)
{
if ((this.cgame.charAt(ni)==CR_ASCII_NUM)||(this.cgame.charAt(ni)==LF_ASCII_NUM)) continue ;
if (this.cgame.charAt(ni) == '}'){this.nstate = BPGN_NORMAL ;this.ctoken=ctmp ;ni = ni - 1 ;break ;}
cttt = this.cgame.charAt(ni) ; ctmp += cttt ; continue ;
}
// NAG (Numeric Annotation Glyph) token state
if (this.nstate == BPGN_NAG)
{ if ((this.cgame.charAt(ni) >= '0') && (this.cgame.charAt(ni) <= '9'))
{cttt = this.cgame.charAt(ni) ;ctmp+= cttt ;continue ;}
ni = ni - 1 ; break ;
}
// symbol token state
if (this.nstate == BPGN_SYMBOL)
{
if ((this.cgame.charAt(ni) == ' ') || (this.cgame.charAt(ni) == TAB_ASCII_NUM)|| (this.cgame.charAt(ni)==CR_ASCII_NUM)||(this.cgame.charAt(ni)==LF_ASCII_NUM)) break ;
if (x.match(SYMB)) { cttt = x; ctmp=ctmp+cttt ; continue ;}
ni = ni - 1 ;break ;
}
}
// set BPGN state
// introduce this.nlaststate
this.nlaststate = this.nstate ;
if ((this.nstate == BPGN_STRING ) ||
(this.nstate == BPGN_INTEGER ) ||
(this.nstate == BPGN_COMMENT1) ||
(this.nstate == BPGN_NAG ) ||
(this.nstate == BPGN_SYMBOL ) ||
(this.nstate == BPGN_COMMENT1))
{
this.nstate = BPGN_NORMAL ;
this.ctoken= ctmp ;
}
else
if (this.nstate == BPGN_COMMENT2) this.ctoken=ctmp ;
if (this.ctoken.length > 0) break ;
}
this.ngameindex = ni + 1 ;
return (this.ctoken.length > 0) ;
}
// is the current token a note?
function bpgnisnote()
{
if (this.ctoken.length < 3) return false ;
return ((this.ctoken.charAt(0)==BPGN_NOTE) && (this.ctoken.charAt(1)== ':')) ;
}
// is the current token an annotation?
function bpgnisannotation ()
{
if (this.ctoken.length < 3) return false ;
return ((this.ctoken.charAt(0)== BPGN_ANNOTATION) && (this.ctoken.charAt(1)==':')) ;
}
// get move
function bpgngetmove (nmovea, nmoveb,aside)
{
var nmove;
var bboarda1;
var bboarda2;
var bboardb1;
var bboardb2 ;
var cboard;
// document.writeln('getmove recieves: '+nmovea+':'+nmoveb+':'+aside);
if (!this.gettoken()) {this.nError = ERROR_NONE ;return true;};
if ((this.nlaststate == BPGN_NORMAL) && (this.ctoken=="(")) {return '(';};
if ((this.nlaststate == BPGN_NORMAL) && (this.ctoken==")")) {return ')';};
if (this.nlaststate == BPGN_COMMENT2) // '{' symbol
{
if (! this.gettoken ()) {return false ;};
if (this.nlaststate != BPGN_NORMAL) {return false;};
// maybe it's a game result?
if (this.bpgngetresult ()) {return 'res' ;} else {return false ;};
};
if (this.nlaststate != BPGN_INTEGER) //we assume that it is move on board 'A'
{
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
nmove=nmovea;
}
// convert move number into integer
else nmove = parseInt(this.ctoken);
if (! this.gettoken ()) // missing board symbol (i.e. must be 'A', 'a', 'B', or 'b')
{return false ;};
if (this.nlaststate != BPGN_SYMBOL) // invalid board symbol (i.e. must be 'A', 'a', 'B', or 'b')
{/*forget about it we insert it later*/};
bboarda1 = ((this.ctoken=='A'))? true: false;
bboarda2 = ((this.ctoken=='a'))? true: false;
bboardb1 = ((this.ctoken=='B'))? true: false;
bboardb2 = ((this.ctoken=='b'))? true: false;
if ((! bboarda1) && (! bboarda2) && (! bboardb1) && (! bboardb2)) // invalid board symbol (i.e. must be 'A', 'a', 'B', or 'b')
{
//lets assume that board is 'a' or 'A' and put the token back. before was return false
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
if (aside=='a') {bboarda2=true} else {bboarda1=true};
};
if (bboarda1)
{
if (nmovea != nmove) // invalid move number
if (this.afirstmove) {return false ;}
cboard ='A' ;
};
if (bboarda2)
{
if (nmovea != nmove) // invalid move number
if (this.afirstmove) {return false ;};
cboard = 'a' ;
};
if (bboardb1)
{
if (nmoveb != nmove) // invalid move number
if (this.bfirstmove) {return false ;};
cboard ='B';
};
if (bboardb2)
{
if (nmoveb != nmove)
if (this.bfirstmove) {return false ;};
cboard = 'b' ;
};
if (! this.gettoken ()) // missing '.'
{return false ;};
if (this.ctoken!=BPGN_MOVE_DSTR) // no '.' let's forget it
{
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
};
if (!this.gettoken()) // missing move
{return false ;};
if (this.nlaststate != BPGN_SYMBOL) // invalid move
{return false ;};
// save move number, board, and move string
var tmp=nmove+cboard+BPGN_MOVE_DSTR+' '+this.ctoken;
// document.writeln(' getmove returns '+tmp+'<br>');
return (tmp) ;
}
// get time
function bpgngettime ()
{
var ct;var lt;
if (! this.gettoken ()) // missing time
{return false;};
if (this.nlaststate != BPGN_COMMENT2) // '{' symbol invalid time
{
//We assume that somebody was too lazy to include time. Let's pretend that it's there put the token back
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
return BPGN_OMITED_TIME;
};
if (! this.gettoken ()) // missing time
{return false ;};
if (this.nlaststate != BPGN_NORMAL) // invalid time, probably comment
{
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
this.BPGN_InsertQueue(BPGN_COMMENT2,'{');
return BPGN_OMITED_TIME;
};// save time
ct=this.ctoken ;
lt=this.nlaststate;
if (! this.gettoken ()) // missing '}'
{return false;};
if (this.ctoken!="}") // expecting '}' but we got something else
{
this.BPGN_InsertQueue(this.nlaststate,this.ctoken);
this.BPGN_InsertQueue(lt,ct);
this.BPGN_InsertQueue(BPGN_COMMENT2,'{');
return BPGN_OMITED_TIME;
};
// nError = ERROR_NONE ;
return parseInt(ct);