moodle-mod_game/cross/play.php

<?php  // $Id: play.php,v 1.23 2012/08/15 14:38:06 bdaloukas Exp $

// This files plays the game "Crossword"

require( "cross_class.php");
require( "crossdb_class.php");

function game_cross_continue( $id, $game, $attempt, $cross, $g, $endofgame, $context)
{
	if( $endofgame){
		if( $g == ''){
			game_updateattempts( $game, $attempt, -1, true);
			$endofgame = false;
		}
	}

	if( $attempt != false and $cross != false){
		return game_cross_play( $id, $game, $attempt, $cross, $g, false, false, $endofgame, false, false, false, false, true, $context);
	}
	
	if( $attempt == false){
		$attempt = game_addattempt( $game);
	}
	
    game_cross_new( $game, $attempt->id, $crossm);		
    game_updateattempts( $game, $attempt, 0, 0);		
    return game_cross_play( $id, $game, $attempt, $crossm, '', false, false, false, false, false, false, false, true, $context);
}

function game_cross_new( $game, $attemptid, &$crossm)
{
    global $DB, $USER;
    
	$cross = new CrossDB();

	$questions = array();
	$infos = array();

	$answers = array();
	$recs = game_questions_shortanswer( $game);
	if( $recs == false){
		print_error( 'game_cross_continue: '.get_string( 'no_words', 'game'));
	}
	$infos = array();
    $reps = array();
	foreach( $recs as $rec){
	    if( $game->param7 == false){	        
    		if( game_strpos( $rec->answertext, ' ')){
	    		continue;		//spaces not allowed
	    	}
	    }
		
		$rec->answertext = game_upper( $rec->answertext);
		$answers[ $rec->answertext] = game_repairquestion( $rec->questiontext);
		$infos[ $rec->answertext] = array( $game->sourcemodule, $rec->questionid, $rec->glossaryentryid, $rec->attachment);

        $a = array( 'gameid' => $game->id, 'userid' => $USER->id, 'questionid' => $rec->questionid, 'glossaryentryid' => $rec->glossaryentryid);
        if(($rec2 = $DB->get_record('game_repetitions', $a, 'id,repetitions r')) != false){
            $reps[ $rec->answertext] = $rec2->r;
        }
	}
	
	$cross->setwords( $answers, $game->param1, $reps);
	
	//game->param4 is minimum words in crossword
	//game->param2 is maximum words in crossword
	if( $cross->computedata( $crossm, $crossd, $lettets, $game->param4, $game->param2)){
		$new_crossd = array();
		foreach( $crossd as $rec)
		{
			$info = $infos[ $rec->answertext];
			if( $info != false){
				$rec->sourcemodule = $info[ 0];
				$rec->questionid = $info[ 1];
				$rec->glossaryentryid = $info[ 2];
				$rec->attachment = $info[ 3];
			}
			$new_crossd[] = $rec;
		}
		$cross->savecross( $game, $crossm, $new_crossd, $attemptid);
	}
	
	if( count( $crossd) == 0){
		print_error( 'game_cross_continue: '.get_string( 'no_words', 'game'));
	}
}

function showlegend( $legend, $title)
{
    if( count( $legend) == 0)
        return;
    
    echo "<br><b>$title</b><br>";
    foreach( $legend as $key => $line)
    {
        $line = game_repairquestion( $line);
        echo game_filtertext( "$key: $line<br>", 0);
    }
}

function game_cross_play( $id, $game, $attempt, $crossrec, $g, $onlyshow, $showsolution, $endofgame, $print, $checkbutton, $showhtmlsolutions, $showhtmlprintbutton,$showstudentguess, $context)
{
	global $CFG, $DB;

	$cross = new CrossDB();

    $language = $attempt->language;
	$info = $cross->loadcross( $g, $done, $html, $game, $attempt, $crossrec, $onlyshow, $showsolution, $endofgame, $showhtmlsolutions, $attempt->language,$showstudentguess, $context);

    if( $language != $attempt->language){
        if( !$DB->set_field( 'game_attempts', 'language', $attempt->language, array( 'id' => $attempt->id))){
           print_error( "game_cross_play: Can't set language");
        }
    }

	if( $done or $endofgame){
		if (! $cm = $DB->get_record( 'course_modules', array( 'id' => $id))) {
			print_error("Course Module ID was incorrect id=$id");
		}
		
		if( $endofgame == false){
			echo '<B>'.get_string( 'win', 'game').'</B><BR>';
		}
		if( game_can_start_new_attempt( $game))
		{
		    echo '<br>';	
		    echo "<a href=\"{$CFG->wwwroot}/mod/game/attempt.php?id=$id&forcenew=1\">".get_string( 'nextgame', 'game').'</a> &nbsp; &nbsp; &nbsp; &nbsp; ';
		}
	}else if( $info != ''){
		echo "<br>$info<br>";
	}

    if( $attempt->language != '')
        $wordrtl = game_right_to_left( $attempt->language);
    else
        $wordrtl = right_to_left();
    $reverseprint = ($wordrtl != right_to_left());
    if( $reverseprint)
        $textdir = 'dir="'.($wordrtl ? 'rtl' : 'ltr').'"';
    else
        $textdir = '';

?>
<style type="text/css"><!--

.answerboxstyle  {
background-color:	#FFFAF0;
border-color:	#808080;
border-style:	solid;
border-width:	1px;
display:	block;
padding:	.75em;
width:	240pt;
}

.gamebox  {
border-style:	solid;
border-width:	1pt;
cursor:	pointer;
font-size:	.12in;
font-weight:	bold;
height:	.18in;
overflow:	hidden;
text-align:	center;
width:	.18in;
}

.boxcheated_sel  {
background-color:	#FFF1D7;
border-color:	#C00000;
color:	#2080D0;
}

.boxcheated_unsel  {
background-color:	#ffffff;
border-color:	#606060;
color:	#2080D0;
}

.boxerror_sel  {
background-color:	#FFF1D7;
border-color:	#C00000;
color:	#BF0000;
}

.boxerror_unsel  {
background-color:	#FFF0F0;
border-color:	#606060;
color:	#BF0000;
}

.boxnormal_sel  {
background-color:	#FFF1D7;
border-color:	#C00000;
color:	#000000;
}

.boxnormal_unsel  {
background-color:	#ffffff;
border-color:	#606060;
color:	#000000;
}

.button  {
width:	64pt;
}

.cluebox  {
border-bottom-width:	1px;
border-color:	#c0c0c0;
border-left-width:	0px;
border-right-width:	0px;
border-style:	solid;
border-top-width:	1px;
font-size:	85%;
margin-top:	1em;
padding-bottom:	.5em;
padding-left:	0pt;
padding-right:	0pt;
padding-top:	.5em;
}

.crosswordarea  {
background-color:	#D0D8E0;
border-color:	#808080;
border-style:	solid;
border-width:	2px;
padding:	.5em;
}

body  {
background-color:	white;
cursor:	default;
}

body, button, input, p, td  {
font-family:	Verdana, Arial, Sans-Serif;
font-size:	small;
}

button  {
cursor:	pointer;
}

h1, h2, h3  {
color:	#5F78A2;
font-family:	Franklin Gothic Medium, Arial, Sans-Serif;
font-weight:	normal;
}

p  {
margin-top:	1em;
}

--></style>

</head>

<?php
if( $print){
    echo '<body onload="window.print()">';
}else{
    echo '<body>';
}

	if( $game->toptext != ''){
		echo $game->toptext.'<br>';
	}
?>

<h1></h1>

<div id="waitmessage" class="answerboxstyle">
	This interactive crossword puzzle requires JavaScript and a reasonably recent web browser, such as Internet Explorer 5.5
	or later, Netscape 7, Mozilla, Firefox, or Safari.  If you have disabled web page scripting, please re-enable it and refresh
	the page.
</div>


<p><table cellpadding="0" cellspacing="0" border="0">

<?php
    if( $game->param3 == 2){
        echo "<tr>\r\n";
        game_cross_show_welcome( $game);
        echo "</tr>\r\n";
        echo "<tr><tr><td>&nbsp</td></tr>\r\n";
    }
?>

<tr>
<td class="crosswordarea"><table id="crossword" cellpadding="3" cellspacing="0" style="display: none; border-collapse: collapse;" <?php echo $textdir;?>>

<script language="JavaScript" type="text/javascript"><!--

// EclipseCrossword and this script block (C) Copyright 2000-2005 Green Eclipse.
// Do not remove this copyright notice.  You can, however, change the rest of the page.
// www.eclipsecrossword.com

var BadChars = "`~!@^*()_={[}]\|:;\"',<>?&";

var CrosswordWidth, CrosswordHeight;
var TableAcrossWord, TableDownWord;
var Words, Word, Clue, WordX, WordY, LastHorizontalWord;
var OnlyCheckOnce;

var CurrentWord, PrevWordHorizontal, x, y, i, j;
var CrosswordFinished, Initialized;

// Check the user's browser and then initialize the puzzle.
if (document.getElementById("waitmessage") != null)
{
	document.getElementById("waitmessage").innerHTML = "<?php echo get_string( 'cross_pleasewait', 'game'); ?>";
	
	// Current game variables
	CurrentWord = -1;
	PrevWordHorizontal = false;
	
<?PHP
 	echo $html;
?>

	OnlyCheckOnce = false;

	// Create the cell-to-word arrays.
	TableAcrossWord = new Array(CrosswordWidth);
	for (var x = 0; x < CrosswordWidth; x++)
    TableAcrossWord[x] = new Array(CrosswordHeight);
	TableDownWord = new Array(CrosswordWidth);
	for (var x = 0; x < CrosswordWidth; x++){ 
		TableDownWord[x] = new Array(CrosswordHeight);
	}
	
	GuessLeter = new Array(CrosswordWidth);
	for (var x = 0; x < CrosswordWidth; x++) 
	{
		GuessLeter[x] = new Array(CrosswordHeight);
		for (var y = 0; y < CrosswordHeight; y++) 
		{
			GuessLeter[ x][ y] = "_";
		}
	}

	solu = new Array(CrosswordWidth);
	for (var x = 0; x < CrosswordWidth; x++) 
	{
		solu[x] = new Array(CrosswordHeight);
		for (var y = 0; y < CrosswordHeight; y++) 
		{
			solu[ x][ y] = "";
		}
	}
	
	for (var y = 0; y < CrosswordHeight; y++)
		for (var x = 0; x < CrosswordWidth; x++)
		{
			TableAcrossWord[x][y] = -1;
			TableDownWord[x][y] = -1;
		}
		
	// First, add the horizontal words to the puzzle.
	for (var i = 0; i <= LastHorizontalWord; i++)
	{
		x = WordX[i];
		y = WordY[i];
		s = Guess[ i];
		so = Solutions[ i];
		for (var j = 0; j < WordLength[i]; j++)
		{
			TableAcrossWord[x + j][y] = i;
			if( j < s.length)
				c = s.substr( j, 1);
			else
				c = '';
			GuessLeter[ x+ j][ y] = c;
			if( j < so.length)
				c = so.substr(  j, 1);
			else
				c = '';
			solu[ x+j][ y] = c;
		}
	}
	
	// Second, add the vertical words to the puzzle.
	for (var i = LastHorizontalWord + 1; i < Words; i++)
	{
		x = WordX[i];
		y = WordY[i];
		s = Guess[ i];
		so = Solutions[ i];
		for (var j = 0; j < WordLength[i]; j++)
		{
			TableDownWord[x][y + j] = i;
			if( j < s.length)
				c = s.substr( j, 1);
			else
				c = '';
			GuessLeter[ x][ y+j] = c;
			if( j < so.length)
				c = so.substr( j, 1);
			else
				c = '';
			solu[ x][ y+j] = c;
		}
	}
	
	document.writeln("<tr><td></td>");
	for (var x = 0; x < CrosswordWidth; x++)
	{
		document.write("<td align=center>" + (x+1) + " </td>");    //col numbers
	}
		
	// Now, insert the row HTML into the table.
	for (var y = 0; y < CrosswordHeight; y++)
	{
		document.writeln("<tr>");
		document.write("<td>" + (y+1)+" </td>");    //line numbers
		for (var x = 0; x < CrosswordWidth; x++)
		{
			if (TableAcrossWord[x][y] >= 0 || TableDownWord[x][y] >= 0)
			{
				document.write("<td id=\"c" + PadNumber(x) + PadNumber(y) + "\" class=\"gamebox boxnormal_unsel\" onclick=\"SelectThisWord(event);\">");

				if( solu[x][y] != '')
					document.write( solu[x][y]);
				else if( GuessLeter[x][y]== "_")
					document.write( "&nbsp;");
				else
					document.write( GuessLeter[x][y]);
				
				document.write("</td>");
			}else
				document.write("<td></td>");    //empty cell
		}
		document.writeln("</tr>");
	}
	
	// Finally, show the crossword and hide the wait message.
	Initialized = true;
	document.getElementById("waitmessage").style.display = "none";
	document.getElementById("crossword").style.display = "block";	
}

// ----------
// Event handlers

// Raised when a key is pressed in the word entry box.
function WordEntryKeyPress(event)
{
	if (CrosswordFinished) return;
	// Treat an Enter keypress as an OK click.
	if (CurrentWord >= 0 && event.keyCode == 13) OKClick();
}

// ----------
// Helper functions

// Returns true if the string passed in contains any characters prone to evil.
function ContainsBadChars(theirWord)
{
	for (var i = 0; i < theirWord.length; i++)
		if (BadChars.indexOf(theirWord.charAt(i)) >= 0) return true;
	return false;
}

// Pads a number out to three characters.
function PadNumber(number)
{
	if (number < 10)
		return "00" + number;
	else if (number < 100)
		return "0" + number;
	else
		return "" +  number;
}

// Returns the table cell at a particular pair of coordinates.
function CellAt(x, y)
{
	return document.getElementById("c" + PadNumber(x) + PadNumber(y));
}

// Deselects the current word, if there's a word selected.  DOES not change the value of CurrentWord.
function DeselectCurrentWord()
{
	if (CurrentWord < 0) return;
	var x, y, i;
	
	document.getElementById("answerbox").style.display = "none";
	document.getElementById("answerbox2").style.display = "none";
	ChangeCurrentWordSelectedStyle(false);
	CurrentWord = -1;
	
}

// Changes the style of the cells in the current word.
function ChangeWordStyle(WordNumber, NewStyle)
{
	if (WordNumber< 0) return;
	var x = WordX[WordNumber];
	var y = WordY[WordNumber];
	
	if (WordNumber<= LastHorizontalWord)
		for (i = 0; i < WordLength[WordNumber]; i++)
			CellAt(x + i, y).className = NewStyle;
	else
		for (i = 0; i < WordLength[WordNumber]; i++)
			CellAt(x, y + i).className = NewStyle;
}

// Changes the style of the cells in the current word between the selected/unselected form.
function ChangeCurrentWordSelectedStyle(IsSelected)
{
	if (CurrentWord < 0) return;
	var x = WordX[CurrentWord];
	var y = WordY[CurrentWord];
	
	if (CurrentWord <= LastHorizontalWord)
		for (i = 0; i < WordLength[CurrentWord]; i++)
			CellAt(x + i, y).className = CellAt(x + i, y).className.replace(IsSelected ? "_unsel" : "_sel", IsSelected ? "_sel" : "_unsel");
	else
		for (i = 0; i < WordLength[CurrentWord]; i++)
			CellAt(x, y + i).className = CellAt(x, y + i).className.replace(IsSelected ? "_unsel" : "_sel", IsSelected ? "_sel" : "_unsel");
}

// Selects the new word by parsing the name of the TD element referenced by the 
// event object, and then applying styles as necessary.
function SelectThisWord(event)
{
	if (CrosswordFinished) return;
	var x, y, i, TheirWord, TableCell;
	
	// Deselect the previous word if one was selected.
	document.getElementById("welcomemessage").style.display = "none";
	if (CurrentWord >= 0) OKClick();
	DeselectCurrentWord();
	
	// Determine the coordinates of the cell they clicked, and then the word that
	// they clicked.
	var target = (event.srcElement ? event.srcElement: event.target);
	x = parseInt(target.id.substring(1, 4), 10);
	y = parseInt(target.id.substring(4, 7), 10);
	
	// If they clicked an intersection, choose the type of word that was NOT selected last time.
	if (TableAcrossWord[x][y] >= 0 && TableDownWord[x][y] >= 0)
		CurrentWord = PrevWordHorizontal ? TableDownWord[x][y] : TableAcrossWord[x][y];
	else if (TableAcrossWord[x][y] >= 0)
		CurrentWord = TableAcrossWord[x][y];
	else if (TableDownWord[x][y] >= 0)
		CurrentWord = TableDownWord[x][y];

	PrevWordHorizontal = (CurrentWord <= LastHorizontalWord);
	
	// Now, change the style of the cells in this word.
	ChangeCurrentWordSelectedStyle(true);
	
	// Then, prepare the answer box.
	x = WordX[CurrentWord];
	y = WordY[CurrentWord];
	TheirWord = "";
	var TheirWordLength = 0;
	for (i = 0; i < WordLength[CurrentWord]; i++)
	{
		// Find the appropriate table cell.
		if (CurrentWord <= LastHorizontalWord)
			TableCell = CellAt(x + i, y);
		else
			TableCell = CellAt(x, y + i);
		// Add its contents to the word we're building.
		if (TableCell.innerHTML != null && TableCell.innerHTML.length > 0 && TableCell.innerHTML != " " && TableCell.innerHTML.toLowerCase() != "&nbsp;")
		{
			TheirWord += TableCell.innerHTML.toUpperCase();
			TheirWordLength++;
		}
		else
		{
			TheirWord += "&bull;";
		}
	}
	
	document.getElementById("wordlabel").innerHTML = TheirWord;
	<?php 
		$msg = "\"".get_string( 'cross_across', 'game').", \" : \"".
					get_string( 'cross_down', 'game').", \"";
		$letters = "\" ".get_string( 'letter', 'game').".\" : \" ".
					get_string( 'letters', 'game').".\"";
	?>
	document.getElementById("wordinfo").innerHTML = ((CurrentWord <= LastHorizontalWord) ? <?php echo $msg ?>) + WordLength[CurrentWord] + (WordLength[CurrentWord] == 1 ? <?php echo $letters;?>);
	document.getElementById("wordclue").innerHTML = Clue[CurrentWord];
	document.getElementById("worderror").style.display = "none";
	//document.getElementById("cheatbutton").style.display = (Word.length == 0) ? "none" : "";
	if (TheirWordLength == WordLength[CurrentWord])
		document.getElementById("wordentry").value = TheirWord;
	else
		document.getElementById("wordentry").value = "";
	
	// Finally, show the answer box.
	document.getElementById("answerbox").style.display = "block";
	document.getElementById("answerbox2").style.display = "block";
	try
	{
		document.getElementById("wordentry").focus();
		document.getElementById("wordentry").select();
	}
	catch (e)
	{
	}
	
}

// Called when the user clicks the OK link.
function OKClick()
{
	var TheirWord, x, y, i, TableCell;
	if (CrosswordFinished) return;
	if (document.getElementById("okbutton").disabled) return;
	
	// First, validate the entry.
	TheirWord = document.getElementById("wordentry").value.toUpperCase();
	if (TheirWord.length == 0)
	{
		DeselectCurrentWord();
		return;
	}
	if (ContainsBadChars(TheirWord))
	{
		document.getElementById("worderror").innerHTML = "<?php echo get_string( 'cross_error_containsbadchars', 'game');?>";
		document.getElementById("worderror").style.display = "block";
		return;
	}
	if (TheirWord.length < WordLength[CurrentWord])
	{
		document.getElementById("worderror").innerHTML  = "<?php echo get_string( 'cross_error_wordlength1', 'game');?>" + WordLength[CurrentWord] + " <?php echo get_string( 'cross_error_wordlength2', 'game');?>";
		document.getElementById("worderror").style.display = "block";
		return;
	}
	if (TheirWord.length > WordLength[CurrentWord])
	{
		document.getElementById("worderror").innerHTML = "<?php echo get_string( 'cross_error_wordlength1', 'game');?>" + WordLength[CurrentWord] + " <?php echo get_string( 'cross_error_wordlength2', 'game');?>";;
		document.getElementById("worderror").style.display = "block";
		return;
	}
	
	// If we made it this far, they typed an acceptable word, so add these letters to the puzzle and hide the entry box.
	x = WordX[CurrentWord];
	y = WordY[CurrentWord];
	for (i = 0; i < TheirWord.length; i++)
	{
		TableCell = CellAt(x + (CurrentWord <= LastHorizontalWord ? i : 0), y + (CurrentWord > LastHorizontalWord ? i : 0));
		TableCell.innerHTML = TheirWord.substring(i, i + 1);
	}
	DeselectCurrentWord();
}

<?php 
if( $showhtmlsolutions == false){
?>
function PackPuzzle( sData)
{
  var i;
  var s;
  var s2;
  var n;
  var j;
  
  s = "";
  len = sData.length;
  for(i=0; i < len; i++)
  {
    c = sData.charAt( i);
    if( (c > "0") && (c <= "9"))
    {
        s = s.concat( '/');
    }
    s = s.concat( c);
  }

  for(;;)
  {
    i = s.indexOf( "__");
    if( i == -1)
      break;
    len = s.length;

    for( j=i ; j < len; j++)
    {
      if( s.charAt( j) != "_")
        break;
    }
    n = j - i;
    s2 = s.substr( 0, i);
    s2 = s2.concat( n);
    s = s2.concat( s.substr( j));
  }

  return s;
}

// Called when the "check server" link is clicked.
function CheckServerClick( endofgame)
{
	var i, j, x, y, UserEntry, ErrorsFound = 0, EmptyFound = 0, TableCell;
	if (CrosswordFinished)
    return;
	DeselectCurrentWord();
	
	for (y = 0; y < CrosswordHeight; y++)
	for (x = 0; x < CrosswordWidth; x++)
	{
		if (TableAcrossWord[x][y] >= 0 || TableDownWord[x][y] >= 0)
		{
			TableCell = CellAt(x, y);
			if (TableCell.className == "box boxerror_unsel")
        TableCell.className = "box boxnormal_unsel";
		}
	}
		
	sData = "";
	for (i = 0; i < Words; i++)
	{
		// Get the user's entry for this word.
		UserEntry = "";
		for (j = 0; j < WordLength[i]; j++)
		{
			if (i <= LastHorizontalWord)
				TableCell = CellAt(WordX[i] + j, WordY[i]);
			else
				TableCell = CellAt(WordX[i], WordY[i] + j);
			if (TableCell.innerHTML.length > 0 && TableCell.innerHTML.toLowerCase() != "&nbsp;")
				UserEntry += TableCell.innerHTML.toUpperCase();
			else if( TableCell.innerHTML.toLowerCase() == "&nbsp;")
			    UserEntry += " ";
			else
				UserEntry += "_";
		}
		sData += UserEntry;
	}
		
	sData = PackPuzzle( sData);
	
	if( endofgame)
		sData += "&finishattempt=1";
	
<?php
	if( $onlyshow == false){
			global $CFG; 
			$params = 'id='.$id.'&action=crosscheck&g=';
			echo "window.location = \"{$CFG->wwwroot}/mod/game/attempt.php?$params\"+ sData;\r\n";
	}
?>
}

<?php
}
?>

function OnPrint()
{
<?php
    global $CFG; 
    $params = "id=$id&gameid=$game->id";
    echo "window.open( \"{$CFG->wwwroot}/mod/game/print.php?$params\")";
?>
}

<?php
if( $showhtmlprintbutton){
?>
    function PrintHtmlClick()
    {
    	document.getElementById("printhtmlbutton").style.display = "none";
    	
    	<?php
    	    if( $showhtmlsolutions){
        	    ?> document.getElementById("checkhtmlbutton").style.display = "none"; <?php
        	}
        ?>
        window.print();     
        <?php
    	    if( $showhtmlsolutions){
        	    ?> document.getElementById("checkhtmlbutton").style.display = "block"; <?php
        	}
        ?>
    	document.getElementById("printhtmlbutton").style.display = "block";	
    }
<?php
}

?>


<?php
if( $showhtmlprintbutton){
?>

/**
*
*  Base64 encode / decode
*  http://www.webtoolkit.info/
*
**/
 
var Base64 = {
 
	// private property
	_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
 
	// public method for decoding
	decode : function (input) {
		var output = "";
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 
		while (i < input.length) {
 
			enc1 = this._keyStr.indexOf(input.charAt(i++));
			enc2 = this._keyStr.indexOf(input.charAt(i++));
			enc3 = this._keyStr.indexOf(input.charAt(i++));
			enc4 = this._keyStr.indexOf(input.charAt(i++));
 
			chr1 = (enc1 << 2) | (enc2 >> 4);
			chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);bgColor = "Black";
			chr3 = ((enc3 & 3) << 6) | enc4;
 
			output = output + String.fromCharCode(chr1);
 
			if (enc3 != 64) {
				output = output + String.fromCharCode(chr2);
			}
			if (enc4 != 64) {
				output = output + String.fromCharCode(chr3);
			}
 		}
 
		output = Base64._utf8_decode(output);
 
		return output;
 
	}, 
 
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;
		while ( i < utftext.length ) {
			c = utftext.charCodeAt(i);
 
			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
 
		}
 
		return string;
	}
 
}

// Called when the "checkhtml" link is clicked.
function CheckHtmlClick()
{
	var i, TableCell, UserEntry, sData, solution;
		
	sData = "";
	for (i = 0; i < Words; i++)
	{
	    solution = Base64.decode( HtmlSolutions[ i]);
		// Get the user's entry for this word.
		UserEntry = "";
		for (j = 0; j < WordLength[i]; j++)
		{
			if (i <= LastHorizontalWord)
				TableCell = CellAt(WordX[i] + j, WordY[i]);
			else
				TableCell = CellAt(WordX[i], WordY[i] + j);
			if (TableCell.innerHTML.length > 0 && TableCell.innerHTML.toLowerCase() != "&nbsp;")
				UserEntry += TableCell.innerHTML.toUpperCase();
			else if( TableCell.innerHTML.toLowerCase() == "&nbsp;")
			    UserEntry += " ";
			else
				UserEntry += "_";
				
			if( UserEntry[ j] != solution[ j])
			{
			    TableCell.innerHTML = "&nbsp;";
			}
		}

	}
}
<?php
}


if( $showhtmlsolutions)
{
?>
    function decodeutf8(utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) {

            c = utftext.charCodeAt(i);

            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }
<?php
}
?>

//-->
</script>

</table></td>

<?php 
    if( $game->param3 == 2){
        echo '<td>&nbsp &nbsp &nbsp</td>';
        game_cross_show_legends( $cross);
    }else{
        game_cross_show_welcome( $game);
    }
?>

</tr></table>


<?php 
	if( $onlyshow == false){
		echo '<div style="margin-top: 1em;">';

		echo '<button id="checkbutton" type="button" onclick="CheckServerClick( 0);" style="display: none;">'.get_string( 'cross_checkbutton', 'game');
		echo '</button>';
		
		echo ' &nbsp;&nbsp;&nbsp;&nbsp;<button id="finishattemptbutton" type="button" onclick="CheckServerClick( 1);" style="display: none;">'.get_string( 'cross_endofgamebutton', 'game');
		echo '</button>';

		echo ' &nbsp;&nbsp;&nbsp;&nbsp;<button id="printbutton" type="button" onclick="OnPrint( 0);" style="display: none;">'.get_string( 'print', 'game');
		echo '</button>';
		
		echo "</div>\r\n";
	}	
	
	if( $showhtmlsolutions or $showhtmlprintbutton){
	    echo '<br>';
	} 
	
	if( $showhtmlsolutions){
		echo '<button id="checkhtmlbutton" type="button" onclick="CheckHtmlClick();" visible=true>'.get_string( 'cross_checkbutton', 'game');
		echo '</button>';	    
	}

	if( $showhtmlprintbutton){
	    if( $showhtmlsolutions){
	        echo "&nbsp;&nbsp;&nbsp;&nbsp;";
	    }
		echo '<button id="printhtmlbutton" type="button" onclick="PrintHtmlClick( 0);" visible=true>'.get_string( 'print', 'game');
		echo '</button>';	    
	}

    if( $game->param3 == 2){
        echo '<td>&nbsp &nbsp &nbsp</td>';
        game_cross_show_welcome( $game);
    }else{
        game_cross_show_legends( $cross);
    }

	if( $game->bottomtext != ''){
		echo '<br><br>'.$game->bottomtext;
	}


if( $attempt != false){
    if( $attempt->timefinish == 0 and $endofgame == 0)
    {
	    ?>

    	<script language="JavaScript" type="text/javascript"><!--
	    if (Initialized)
	    {
	    <?php
    	    if( $print == false){
    	        echo "document.getElementById(\"welcomemessage\").style.display = \"\";";
    	    }
    	
            if( $showsolution == false)
            {
                ?>
    	    	    document.getElementById("checkbutton").style.display = "";
	        	    document.getElementById("finishattemptbutton").style.display = "";
	        	    document.getElementById("printbutton").style.display = "";
	        	<?php
	        }
	    ?>
	    }
	    //-->
	    </script>
	    <?php
    }
}

?>


</body>

<?PHP
}

function game_cross_show_welcome( $game){
    if( $game->param3 <> 2){
        game_cross_show_welcome0( $game);
    }else{
        game_cross_show_welcome1();
    }
            
}

function game_cross_show_welcome0( $game){
?>
<td valign="top" style="padding-left: 1em;">

<div id="welcomemessage" class="answerboxstyle" style="display:none;">  
<?php echo get_string( 'cross_welcome', 'game'); ?> </div>

<div id="answerbox2"  style="display:none;"></div>

<div id="answerbox" class="answerboxstyle" style="display:none;">
<h3 id="wordlabel" style="text-transform:uppercase;margin:0;"> </h3>
<div id="wordinfo" style="font-size:8pt;color:#808080"> </div>
<div id="wordclue" class="cluebox"> </div>
<div style="margin-top:1em;"><input id="wordentry" type="text" size="24"
 style="font-weight: bold; text-transform:uppercase;"
 onkeypress="WordEntryKeyPress(event)" onchange="WordEntryKeyPress(event)" autocomplete="off"></div>
<?php
    if( $game->param3 == 2){
        game_cross_show_welcome( $game);
    }
?>
<div id="worderror" style="color:#c00000;font-weight:bold;display:none;margin-top:1em;"></div>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="margin-top:1em;"><tr>
<td align="right">
<button id="okbutton" type="button" class="button" onclick="OKClick();" style="font-weight: bold;">OK</button> &nbsp;
<button id="cancelbutton" type="button" class="button" onclick="DeselectCurrentWord();">Cancel</button>
</td></tr></table>

</div>


</td>
<?php
}

function game_cross_show_welcome1(){
?>
<td valign="top" style="padding-left: 1em;">

<div id="welcomemessage" class="answerboxstyle" style="display:none;">  
<?php echo get_string( 'cross_welcome', 'game'); ?> </div>

<div id="answerbox" class="answerboxstyle" style="display:none;">

<div style="margin-top:1em;"><input id="wordentry" type="text" size="24"
 style="font-weight: bold; text-transform:uppercase;"
 onkeypress="WordEntryKeyPress(event)" onchange="WordEntryKeyPress(event)" autocomplete="off"></div>
<div id="worderror" style="color:#c00000;font-weight:bold;display:none;margin-top:1em;"></div>


<table border="0" cellspacing="0" cellpadding="0" width="100%" style="margin-top:1em;"><tr>
<td align="right">
<button id="okbutton" type="button" class="button" onclick="OKClick();" style="font-weight: bold;">OK</button> &nbsp;
<button id="cancelbutton" type="button" class="button" onclick="DeselectCurrentWord();">Cancel</button>
</td></tr></table>

</td><td>&nbsp</td><td>


<div id="answerbox2" class="answerboxstyle" style="display:none;">
<h3 id="wordlabel" style="text-transform:uppercase;margin:0;"> </h3>
<div id="wordinfo" style="font-size:8pt;color:#808080"> </div>
<div id="wordclue" class="cluebox"> </div>
</div>



</div>


</td>
<?php
}

function game_cross_show_legends( $cross){
    echo '<td>';
    ShowLegend( $cross->m_LegendH,  get_string( 'cross_across', 'game'));
    ShowLegend( $cross->m_LegendV, get_string( 'cross_down', 'game'));
    echo '</td>';
}