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439 lines
14 KiB
439 lines
14 KiB
<?php // $Id: play.php,v 1.26 2012/07/26 05:39:00 bdaloukas Exp $
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// This files plays the game "Snakes and Ladders"
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function game_snakes_continue( $id, $game, $attempt, $snakes, $context)
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{
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if( $attempt != false and $snakes != false){
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return game_snakes_play( $id, $game, $attempt, $snakes, $context);
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}
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if( $attempt === false){
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$attempt = game_addattempt( $game);
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}
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$newrec = new stdClass();
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$newrec->id = $attempt->id;
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$newrec->snakesdatabaseid = $game->param3;
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if( $newrec->snakesdatabaseid == 0)
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$newrec->snakesdatabaseid = 1;
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$newrec->position = 1;
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$newrec->queryid = 0;
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$newrec->dice = rand( 1, 6);
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if( !game_insert_record( 'game_snakes', $newrec)){
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print_error( 'game_snakes_continue: error inserting in game_snakes');
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}
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game_updateattempts( $game, $attempt, 0, 0);
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return game_snakes_play( $id, $game, $attempt, $newrec, $context);
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}
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function game_snakes_play( $id, $game, $attempt, $snakes, $context)
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{
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global $CFG, $DB, $OUTPUT;
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$board = game_snakes_get_board( $game);
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$showboard = false;
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if( $snakes->position > $board->cols * $board->rows && $snakes->queryid <> 0){
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$finish = true;
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if (! $cm = $DB->get_record('course_modules', array( 'id' => $id))) {
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print_error("Course Module ID was incorrect id=$id");
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}
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echo '<B>'.get_string( 'win', 'game').'</B><BR>';
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echo '<br>';
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echo "<a href=\"$CFG->wwwroot/mod/game/attempt.php?id=$id\">".get_string( 'nextgame', 'game').'</a> ';
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echo "<a href=\"$CFG->wwwroot/course/view.php?id=$cm->course\">".get_string( 'finish', 'game').'</a> ';
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$gradeattempt = 1;
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$finish = 1;
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game_updateattempts( $game, $attempt, $gradeattempt, $finish);
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}else
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{
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$finish = false;
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if( $snakes->queryid == 0){
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game_snakes_computenextquestion( $game, $snakes, $query);
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}else
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{
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$query = $DB->get_record( 'game_queries', array( 'id' => $snakes->queryid));
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}
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if( $game->toptext != ''){
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echo $game->toptext.'<br>';
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}
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$showboard = true;
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}
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if( $showboard and $game->param8 == 0)
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game_snakes_showquestion( $id, $game, $snakes, $query, $context);
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?>
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<script language="javascript" event="onload" for="window">
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<!--
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var retVal = new Array();
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var elements = document.getElementsByTagName("*");
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for(var i = 0;i < elements.length;i++){
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if( elements[ i].type == 'text'){
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elements[ i].focus();
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break;
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}
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}
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-->
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</script>
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<table>
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<tr>
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<td>
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<div id="board" STYLE="position:relative; left:0px;top:0px; width:<?php p($board->width); ?>px; height:<?php p($board->height); ?>px;">
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<img src="<?php echo $board->imagesrc; ?>"></img>
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</div>
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<?php
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if( $finish == false){
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game_snakes_showdice( $snakes, $board);
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}
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?>
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</td>
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</tr>
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</table>
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<?php
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if( $game->bottomtext != ''){
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echo '<br>'.$game->bottomtext;
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}
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if( $showboard and $game->param8 != 0)
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game_snakes_showquestion( $id, $game, $snakes, $query, $context);
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}
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function game_snakes_showdice( $snakes, $board)
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{
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$pos = game_snakes_computeplayerposition( $snakes, $board);
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?>
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<div ID="player1" STYLE="position:relative; left:<?php p( $pos->x);?>px; top:<?php p( $pos->y);?>px;" >
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<img src="snakes/1/player1.png" alt="<?php print_string('snakes_player', 'game', ($snakes->position +1)); /*Accessibility. */ ?>" width="<?php echo $pos->width; ?>" height="<?php echo $pos->height; ?>"/>
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</div>
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<div ID="dice" STYLE="position:relative; left:<?php p( $board->width + round($board->width/3));?>px;top:<?php p( -2*round($board->height/3));?>px; ">
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<img src="snakes/1/dice<?php p($snakes->dice);?>.png" alt="<?php print_string('snakes_dice', 'game', $snakes->dice) ?>" />
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</div>
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<?php
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}
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function game_snakes_computeplayerposition( $snakes, $board)
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{
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$x = ($snakes->position - 1) % $board->cols;
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$y = floor( ($snakes->position-1) / $board->cols);
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$cellwidth = ($board->width - $board->headerx - $board->footerx) / $board->cols;
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$cellheight = ($board->height - $board->headery - $board->footery) / $board->rows;
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$pos = new stdClass();
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$pos->width = 22;
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$pos->height = 22;
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$pos->ofsx = 0;
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$pos->ofsy = $pos->height;
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switch( $board->direction){
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case 1:
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if( ($y % 2) == 1){
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$x = $board->cols - $x - 1;
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}
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$pos->x = $board->headerx + $x * $cellwidth + ($cellwidth - $pos->width)/2+ $pos->ofsx;
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$pos->y = $board->footery + $y * $cellheight + ($cellheight - $pos->height)/2 + $pos->ofsy;
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$pos->x = round( $pos->x);
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$pos->y = round( -$pos->y);
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break;
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}
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return $pos;
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}
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function game_snakes_computenextquestion( $game, &$snakes, &$query)
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{
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global $DB, $USER;
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//Retrieves CONST_GAME_TRIES_REPETITION words and select the one which is used fewer times
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if( ($recs = game_questions_selectrandom( $game, 1, CONST_GAME_TRIES_REPETITION)) == false){
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return false;
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}
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$glossaryid = 0;
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$questionid = 0;
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$min_num = 0;
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$query = new stdClass();
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foreach( $recs as $rec){
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$a = array( 'gameid' => $game->id, 'userid' => $USER->id, 'questionid' => $rec->questionid, 'glossaryentryid' => $rec->glossaryentryid);
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if(($rec2 = $DB->get_record('game_repetitions', $a, 'id,repetitions r')) != false){
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if( ($rec2->r < $min_num) or ($min_num == 0)){
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$min_num = $rec2->r;
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$query->glossaryentryid = $rec->glossaryentryid;
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$query->questionid = $rec->questionid;
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}
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}
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else{
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$query->glossaryentryid = $rec->glossaryentryid;
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$query->questionid = $rec->questionid;
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break;
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}
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}
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if( ($query->glossaryentryid == 0) AND ($query->questionid == 0))
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return false;
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$query->attemptid = $snakes->id;
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$query->gameid = $game->id;
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$query->userid = $USER->id;
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$query->sourcemodule = $game->sourcemodule;
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$query->score = 0;
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$query->timelastattempt = time();
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if( !($query->id = $DB->insert_record( 'game_queries', $query))){
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print_error( "Can't insert to table game_queries");
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}
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$snakes->queryid = $query->id;
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$updrec = new stdClass();
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$updrec->id = $snakes->id;
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$updrec->queryid = $query->id;
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$updrec->dice = $snakes->dice = rand( 1, 6);
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if( !$DB->update_record( 'game_snakes', $updrec)){
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print_error( 'game_questions_selectrandom: error updating in game_snakes');
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}
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game_update_repetitions($game->id, $USER->id, $query->questionid, $query->glossaryentryid);
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return true;
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}
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function game_snakes_showquestion( $id, $game, $snakes, $query, $context)
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{
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if( $query->sourcemodule == 'glossary'){
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game_snakes_showquestion_glossary( $id, $snakes, $query, $game);
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}else
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{
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game_snakes_showquestion_question( $game, $id, $snakes, $query, $context);
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}
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}
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function game_snakes_showquestion_question( $game, $id, $snakes, $query, $context)
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{
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global $CFG;
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$questionlist = $query->questionid;
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$questions = game_sudoku_getquestions( $questionlist);
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/// Start the form
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echo "<form id=\"responseform\" method=\"post\" action=\"{$CFG->wwwroot}/mod/game/attempt.php\" onclick=\"this.autocomplete='off'\">\n";
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echo "<center><input type=\"submit\" name=\"finishattempt\" value=\"".get_string('sudoku_submit', 'game')."\"></center>\n";
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// Add a hidden field with the quiz id
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echo '<input type="hidden" name="id" value="' . s($id) . "\" />\n";
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echo '<input type="hidden" name="action" value="snakescheck" />';
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echo '<input type="hidden" name="queryid" value="' . $query->id . "\" />\n";
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/// Print all the questions
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foreach( $questions as $question)
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game_print_question( $game, $question, $context);
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// Add a hidden field with questionids
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echo '<input type="hidden" name="questionids" value="'.$questionlist."\" />\n";
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echo "</form>\n";
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}
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function game_snakes_showquestion_glossary( $id, $snakes, $query, $game)
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{
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global $CFG, $DB;
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$entry = $DB->get_record( 'glossary_entries', array('id' => $query->glossaryentryid));
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/// Start the form
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echo "<form id=\"responseform\" method=\"post\" action=\"{$CFG->wwwroot}/mod/game/attempt.php\" onclick=\"this.autocomplete='off'\">\n";
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echo "<center><input type=\"submit\" name=\"finishattempt\" value=\"".get_string('sudoku_submit', 'game')."\"></center>\n";
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// Add a hidden field with the queryid
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echo '<input type="hidden" name="id" value="' . s($id) . "\" />\n";
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echo '<input type="hidden" name="action" value="snakescheckg" />';
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echo '<input type="hidden" name="queryid" value="' . $query->id . "\" />\n";
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/// Print all the questions
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// Add a hidden field with glossaryentryid
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echo '<input type="hidden" name="glossaryentryid" value="'.$query->glossaryentryid."\" />\n";
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$cmglossary = get_coursemodule_from_instance('glossary', $game->glossaryid, $game->course);
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$contextglossary = get_context_instance(CONTEXT_MODULE, $cmglossary->id);
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$s = game_filterglossary(str_replace( '\"', '"', $entry->definition), $query->glossaryentryid, $contextglossary->id, $game->course);
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echo $s.'<br>';
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echo get_string( 'answer').': ';
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echo "<input type=\"text\" name=\"answer\" size=30 /><br>";
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echo "</form>\n";
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}
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function game_snakes_check_questions( $id, $game, $attempt, $snakes, $context)
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{
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global $QTYPES, $CFG, $DB;
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$responses = data_submitted();
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if( $responses->queryid != $snakes->queryid){
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game_snakes_play( $id, $game, $attempt, $snakes, $context);
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return;
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}
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$questionlist = $DB->get_field( 'game_queries', 'questionid', array( 'id' => $responses->queryid));
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$questions = game_sudoku_getquestions( $questionlist);
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$correct = false;
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$query = '';
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foreach($questions as $question) {
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$query = new stdClass();
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$query->id = $snakes->queryid;
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$grade = game_grade_responses( $question, $responses, 100, $answertext);
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if( $grade < 50){
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//wrong answer
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game_update_queries( $game, $attempt, $query, 0, $answertext);
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continue;
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}
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//correct answer
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$correct = true;
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game_update_queries( $game, $attempt, $query, 1, '');
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}
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//set the grade of the whole game
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game_snakes_position( $id, $game, $attempt, $snakes, $correct, $query, $context);
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}
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function game_snakes_check_glossary( $id, $game, $attempt, $snakes, $context)
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{
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global $QTYPES, $CFG, $DB;
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$responses = data_submitted();
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if( $responses->queryid != $snakes->queryid){
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game_snakes_play( $id, $game, $attempt, $snakes, $context);
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return;
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}
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$query = $DB->get_record( 'game_queries', array( 'id' => $responses->queryid));
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$glossaryentry = $DB->get_record( 'glossary_entries', array( 'id' => $query->glossaryentryid));
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$name = 'resp'.$query->glossaryentryid;
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$useranswer = $responses->answer;
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if( game_upper( $useranswer) != game_upper( $glossaryentry->concept)){
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//wrong answer
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$correct = false;
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game_update_queries( $game, $attempt, $query, 0, $useranswer);//last param is grade
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}else
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{
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//correct answer
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$correct = true;
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game_update_queries( $game, $attempt, $query, 1, $useranswer);//last param is grade
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}
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//set the grade of the whole game
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game_snakes_position( $id, $game, $attempt, $snakes, $correct, $query, $context);
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}
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function game_snakes_position( $id, $game, $attempt, $snakes, $correct, $query, $context)
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{
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global $DB;
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$data = $DB->get_field( 'game_snakes_database', 'data', array( 'id' => $snakes->snakesdatabaseid));
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if( $correct){
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if( ($next=game_snakes_foundlander( $snakes->position + $snakes->dice, $data))){
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$snakes->position = $next;
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}else
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{
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$snakes->position = $snakes->position + $snakes->dice;
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}
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}else
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{
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if( ($next=game_snakes_foundsnake( $snakes->position, $data))){
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$snakes->position = $next;
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}
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}
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$updrec = new stdClass();
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$updrec->id = $snakes->id;
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$updrec->position = $snakes->position;
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$updrec->queryid = 0;
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if( !$DB->update_record( 'game_snakes', $updrec)){
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print_error( "game_snakes_position: Can't update game_snakes");
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}
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$board = $DB->get_record_select( 'game_snakes_database', "id=$snakes->snakesdatabaseid");
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$gradeattempt = $snakes->position / ($board->cols * $board->rows);
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$finished = ( $snakes->position > $board->cols * $board->rows ? 1 : 0);
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game_updateattempts( $game, $attempt, $gradeattempt, $finished);
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game_snakes_computenextquestion( $game, $snakes, $query);
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game_snakes_play( $id, $game, $attempt, $snakes, $context);
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}
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//in lander go forward
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function game_snakes_foundlander( $position, $data)
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{
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preg_match( "/L$position-([0-9]*)/", $data, $matches);
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if( count( $matches)){
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return $matches[ 1];
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}
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return 0;
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}
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//in snake go backward
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function game_snakes_foundsnake( $position, $data)
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{
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preg_match( "/S([0-9]*)-$position,/", $data.',', $matches);
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if( count( $matches)){
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return $matches[ 1];
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}
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return 0;
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}
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function game_snakes_remove_attemptdata ($questionusageid, $questionid) {
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global $DB;
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$sql = "SELECT qas.id
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FROM mdl_question_attempts qa
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LEFT JOIN mdl_question_attempt_steps qas
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ON qa.id=qas.questionattemptid
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WHERE questionusageid = $questionusageid
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AND questionid = $questionid
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AND state != 'todo'";
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if ($stepdata = $DB->get_records_sql($sql)) {
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foreach($stepdata as $step) {
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if ($step->id > 0) {
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$DB->delete_records('question_attempt_step_data', array('attemptstepid' => $step->id));
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$DB->get_records_sql("update {question_attempt_steps} set state='todo' where id = {$step->id}");
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}
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}
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}
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}
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