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game_move.php
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game_move.php
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<?php
// Some Chess, a PHP multi-player chess server.
// Copyright (C) 2007 Jon Link
// echo '<div style="position:absolute;top:0;left:0;padding:0.1em;z-index:100;background:#fff;border:2px solid red">'.print_r($canCastle).'</div>'; //DEBUGGING
function moveIt($locations,$oldSpot,$newSpot,$gameID,$playerColor,$lastMove,$promote,$lang,$oppID,$emailMove){
include_once('game_rules/threat.php');
require('languages/'.$lang.'_chess.php');
$query = 'SELECT bCastle,wCastle,nextMoveNum,game_type FROM '.dbPre.'games WHERE gameID="'.$gameID.'" LIMIT 1';
$result = mysql_query($query)or die('<div class="error">'.errorDBStr.' (bg-1)</div>');
$canCastle = unserialize(mysql_result($result,0, $playerColor{0}.'Castle')); // this will need to change once playerColor is just b or w
$moveNum = mysql_result($result,0,'nextMoveNum');
$gametype = mysql_result($result,0,'game_type');
//--catch errors
//----do we have all the vars
if(!$locations) $spRules['error'] = $movesStr[0];
if(!$gameID) $spRules['error'] = $movesStr[0];
//--if no errors are caught
if(!$message){
//--go through the old array and make the changes from the move in an new array
$playerColor = ($playerColor == 'white')? 'l' : 'd'; // again, this all needs to be simplified to b & w instead of white & black, l & d, and b & w
$defColor = ($playerColor == 'd')? 'l' : 'd'; // AGH! this all needs to be simplified to b & w instead of white & black, l & d, and b & w ALSO this is already figured out in board.php, just share the result in an array called opp --- $opp = array(id, color)
$movingPiece = $locations[$oldSpot];
//--check for illegal moves
if(strpos($lastMove,'#') !== false){
$spRules['error'] = $movesStr[1];
}elseif(ord($newSpot{0}) < 97 || ord($newSpot{0}) > 104 || $newSpot{1} > 8 || $newSpot{1} < 1){
$spRules['error'] = $movesStr[2];
}elseif(ord($oldSpot{0}) < 97 || ord($oldSpot{0}) > 104 || $oldSpot{1} > 8 || $oldSpot{1} < 1){
$spRules['error'] = $movesStr[3];
}elseif($playerColor != $movingPiece{1}){
$spRules['error'] = $movesStr[5];
}elseif($playerColor == ($locations[$newSpot]{1}) && $movingPiece{0} !== 'k' && $gametype == 'R'){
$_SESSION['oldSpot'.$gameID] = $newSpot;
return 'redo';
}elseif($playerColor == ($locations[$newSpot]{1}) && $movingPiece{0} == 'k' && $locations[$newSpot]{0} !== 'r' && $gametype == 'R'){
$_SESSION['oldSpot'.$gameID] = $newSpot;
return 'redo';
}elseif($playerColor == ($locations[$newSpot]{1}) && $movingPiece{0} == 'k' && ($newSpot{1} == '1' || $newSpot{1} == '8') && $gametype == 'R'){
if($movingPiece{0} == 'k'){include('game_rules/king.php'); $spRules = kingRules($locations,$newSpot,$oldSpot,$movingPiece{1},$canCastle,$lastMove,$gametype,$kingStr);}
}elseif($playerColor == ($locations[$newSpot]{1}) && $movingPiece{0} == 'k' && (ord($newSpot{0}) !== (ord($oldSpot{0})+2)) && (ord($newSpot{0}) !== (ord($oldSpot{0})-2)) && $gametype == 'R'){
$_SESSION['oldSpot'.$gameID] = $newSpot;
return 'redo';
}elseif($oldSpot == $newSpot || ($playerColor == ($locations[$newSpot]{1}) && $gametype !== 'R')){
$_SESSION['oldSpot'.$gameID] = $newSpot;
return 'redo';
}else{
//----check with rules
if($movingPiece{0} == 'k'){include('game_rules/king.php'); $spRules = kingRules($locations,$newSpot,$oldSpot,$movingPiece{1},$canCastle,$lastMove,$gametype,$kingStr);}
if($movingPiece{0} == 'q'){include('game_rules/queen.php'); $spRules = queenRules($locations,$newSpot,$oldSpot,$movingPiece,$queenStr);}
if($movingPiece{0} == 'r'){include('game_rules/rook.php'); $spRules = rookRules($locations,$newSpot,$oldSpot,$movingPiece,$rookStr);}
if($movingPiece{0} == 'b'){include('game_rules/bishop.php'); $spRules = bishopRules($locations,$newSpot,$oldSpot,$movingPiece,$bishopStr);}
if($movingPiece{0} == 'n'){include('game_rules/knight.php'); $spRules = knightRules($locations,$newSpot,$oldSpot,$movingPiece,$knightStr);}
if($movingPiece{0} == 'p'){include('game_rules/pawn.php'); $spRules = pawnRules($locations,$newSpot,$oldSpot,$movingPiece,$lastMove,$pawnStr);}
}
//----if rules are broken then don't move & let the player know
if($spRules['error']){
//echo '<div id="info" class="badmove">'.$spRules['error'].'</div>';
$error['name'] = 'illegal';
$error['type'] = $spRules['error'];
return $error;
//--if rules aren't broken then continue
}else{
for($row=1;$row<=8;++$row){
for($col=1;$col<=8;++$col){
$square = chr(ord('a')-1+$col).(9-$row);
$piece = $locations[$square];
if($square == $oldSpot) $piece = '';
if($square == $newSpot){
$piece = $movingPiece;
$capture = $locations[$newSpot];
if($capture && $locations[$newSpot]{1} !== $playerColor) $capNote = 'x';
}
$newLocations[$square] = $piece;
}
}
// anytime the king moves turn off castling
if($movingPiece{0} == 'k' && $canCastle['k'] == 1){$canCastle['k'] = 0; $canCastle['km'] = $moveNum;}
if($gametype == 'R'){
// if random chess then use the FEN to shut off the proper rook
// $opening = mysql_result($result,0,'opening');
}else{
// anytime the rook moves turn off castling to that side
if($movingPiece{0} == 'r' && $oldSpot{0} == 'a' && $canCastle['a'] == 1){$canCastle['a'] = 0; $canCastle['am'] = $moveNum;}
if($movingPiece{0} == 'r' && $oldSpot{0} == 'h' && $canCastle['h'] == 1){$canCastle['h'] = 0; $canCastle['hm'] = $moveNum;}
}
$canCastle = serialize($canCastle);
//--move the rook if castled & set castling variable
if($spRules['castled']){
$moveNote = $spRules['castled'];
$rookSqF = $spRules['rookSqF'];
$rookSqT = $spRules['rookSqT'];
if($newLocations[$rookSqF]{0} == 'r') $newLocations[$rookSqF] = ''; // only empty the rook's old spot if there is still a rook there (sometimes the king is there in random chess)
$newLocations[$rookSqT] = 'r'.$playerColor;
$notePiece = $spRules['castled'];
unset($newSpot);
}
//--promote the pawn
if($promote){
$newLocations[$newSpot] = ($promote).$playerColor;
$pawnPromo = '='.strtoupper($promote);
}
if($spRules['promo'] && !$promote){
$_SESSION['oldSpot'.$gameID] = $oldSpot;
echo '<div class="dialog">
<b class="dialog_t"><b class="xb1"></b><b class="xb2"></b><b class="xb3"></b><b class="xb4"></b></b>
<div class="dialog_content">
<p>Promote to:</p>
<form action="game_board_play.php" method="post">
<input type="hidden" name="do" value="move" />
<input type="hidden" name="promote" value="q" />
<input type="hidden" name="newSpot" value="',$newSpot,'" />
<input type="hidden" name="gameID" value="',$gameID,'" />
<input type="image" value="submit" src="img/queenB.png" alt="Queen" style="border:1px #999 solid" />
</form>
<form action="game_board_play.php" method="post">
<input type="hidden" name="do" value="move" />
<input type="hidden" name="promote" value="b" />
<input type="hidden" name="newSpot" value="',$newSpot,'" />
<input type="hidden" name="gameID" value="',$gameID,'" />
<input type="image" value="submit" src="img/bishopB.png" alt="bishop" style="border:1px #999 solid" />
</form>
<form action="game_board_play.php" method="post">
<input type="hidden" name="do" value="move" />
<input type="hidden" name="promote" value="r" />
<input type="hidden" name="newSpot" value="',$newSpot,'" />
<input type="hidden" name="gameID" value="',$gameID,'" />
<input type="image" value="submit" src="img/rookB.png" alt="rook" style="border:1px #999 solid" />
</form>
<form action="game_board_play.php" method="post">
<input type="hidden" name="do" value="move" />
<input type="hidden" name="promote" value="n" />
<input type="hidden" name="newSpot" value="',$newSpot,'" />
<input type="hidden" name="gameID" value="',$gameID,'" />
<input type="image" value="submit" src="img/knightB.png" alt="knight" style="border:1px #999 solid" />
</form>
<p> </p>
</div>
<b class="dialog_b"><b class="xb4"></b><b class="xb3"></b><b class="xb2"></b><b class="xb1"></b></b>
</div>';
return $locations;
}
//--en passant
$thisMove['twoSpaces'] = $spRules['twoSpaces'];
if($spRules['cap']){
$capSq = $spRules['cap'];
$newLocations[$capSq] = '';
}
//--did the player put the opponent in check
if($playerColor=='d'){$kingSq = array_search('kl',$newLocations);}else{$kingSq = array_search('kd',$newLocations);}
$check = aThreat($kingSq,$newLocations,$playerColor);
if($check) $checkNote = '+';
if($check){
include_once('game_rules/mate.php');
if($checkmate) $checkNote = $checkmate;
}
//--write the notation
if(!$notePiece) $notePiece = strtoupper($movingPiece{0});
if($notePiece=='P'){
$notePiece='';
if($capNote) $notePiece = $oldSpot{0};
}
if(isset($spRules['notePiece'])) $notePiece = $spRules['notePiece']; //if we need to be specific ex Rea3
$moveNote = (substr($notePiece,-2,2)=='EP')? $notePiece.$checkNote : $notePiece.$capNote.$newSpot.$pawnPromo.$checkNote;
if(substr($moveNote,-3,2)=='EP') $moveNote = substr($moveNote,0,-1);
$thisMove['move'] = $moveNote;
//--discover if the player is putting him/herself into check
$kingSq = array_search('k'.$playerColor,$newLocations);
$selfCheck = aThreat($kingSq,$newLocations,$defColor);
if($selfCheck) $spRules['error'] = $movesStr[8];
//one last illegal move check (to see if player puts her/himself into check -- can only be done once we see what the new board looks like)
if($spRules['error']){
$error['name'] = 'illegal';
$error['type'] = $spRules['error'];
return $error;
}else{
//--throw the notation into the moves DB
if($playerColor=='l'){
$queryNote = 'INSERT INTO '.dbPre.'moves (gameID,moveNum,whiteMove) VALUES ("'.$gameID.'","'.$moveNum.'","'.$moveNote.'")';
$nextMoveNum = $moveNum;
$nextTurnColor = 'black';
}else{
$queryNote = 'UPDATE '.dbPre.'moves SET blackMove="'.$moveNote.'" WHERE gameID="'.$gameID.'" AND moveNum="'.$moveNum.'"';
$nextMoveNum = $moveNum + 1;
$nextTurnColor = 'white';
}
@mysql_query($queryNote)or die('<div class="error">'.errorDBStr.' (mv-1)</div>');
//--format the array and throw it into the DB, then send out the new array
$newLocationsDB = serialize($newLocations);
$thisMove = serialize($thisMove);
$now = date(YmdHis);
$color = ($playerColor == 'd')? 'b' : 'w';
$queryMove = 'UPDATE '.dbPre.'games SET setup=\''.$newLocationsDB.'\', nextMoveNum="'.$nextMoveNum.'", nextTurnColor="'.$nextTurnColor.'", '.$color.'Castle=\''.$canCastle.'\', lastMove=\''.$thisMove.'\', gameDate="'.$now.'", reqDraw="0", reqUndo="0" WHERE gameID="'.$gameID.'"';
mysql_query($queryMove)or die('<div class="error">'.errorDBStr.' (mv-2)</div>');
if(isset($checkmate)){
include('game_func.php');
mated($oppID,$gameID,$matedStr);
}
if($emailMove){
//--email move
include('config.php');
$queryemail = 'SELECT email FROM '.dbPre.'players WHERE id="'.$oppID.'" LIMIT 1';
$resultemail = mysql_query($queryemail)or die('<div class="error">'.errorDBStr.' (mv-3)</div>');
$addr = mysql_result($resultemail,0,'email');
$message = $emailStr[1].$_SESSION['vs'.$gameID].$emailStr[2].$_SESSION['name'].$emailStr[3].$moveNote.$emailStr[4].$gameID.')'."\n\r http://".$domain;
$headers = 'MIME-Version: 1.0
Content-type: text/plain; charset=iso-8859-1
Date: '.date("r").'
X-Priority: 3
X-Mailer: Some Chess
';
$headers .= 'From: "Some Chess" <somechess@'.$domain.'>';
if($addr) mail($addr,$emailStr[0],$message,$headers);
}
return $newLocations;
}
}
}else{
echo '<div id="info" class="badMove">',$message,'</div>';
return $locations;
}
}
?>