I can't get the eagle to hunt the pigeon, I don't know what I'm doing wrong... It's behaving the same way as the pigeon...
I wonder if anyone could point me to the right direction. Thanks.
Code: Select all
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Homing pigeon simulator</title>
<style type="text/css">
div.map {
float:left;
text-align:center;
border:1px solid #666;
background-color:#fcfcfc;
margin:5px;
padding:1em;
}
span.home, span.bird{
font-weight:bold;
}
span.empty{
color:#666;
}
</style>
</head>
<body>
<?php
$mapSize = 10;
//position the home and the pigeon
do {
$homeX = rand ( 0, $mapSize-1);
$homeY = rand ( 0, $mapSize-1);
$pigeonX = rand (0, $mapSize-1);
$pigeonY = rand (0, $mapSize-1);
$sasX = rand (0, $mapSize-1);
$sasY = rand (0, $mapSize-1);
} while ( (abs($homeX - $pigeonX ) < $mapSize/2) && (abs( $homeY - $pigeonY ) < $mapSize/2) && (abs($pigeonX - $sasX ) < $mapSize/2) && (abs( $pigeonY - $sasY ) < $mapSize/2));
//move the pigeon closer to target
do {
if ( $pigeonX < $homeX)
$pigeonX++;
elseif ( $pigeonX > $homeX)
$pigeonX--;
if ( $pigeonY < $homeY )
$pigeonY++;
elseif ($pigeonY > $homeY)
$pigeonY--;
if ( $sasX < $pigeonX)
$sasX++;
elseif ( $sasX > $pigeonX)
$sasX--;
if ( $sasY < $pigeonY )
$sasY++;
elseif ($sasY > $pigeonY)
$sasY--;
//display the current map
echo '<div class="map" style="width:'. $mapSize .'em;"><pre>';
for ( $y = 0; $y < $mapSize; $y++) {
for ( $x = 0; $x < $mapSize; $x++) {
if ($x==$homeX && $y == $homeY) {
echo '<span class="home">+</span>'; //Home
} elseif ( $x == $pigeonX && $y == $pigeonY) {
echo '<span class="bird">%</span>'; // Pigeon
} elseif ($x == $sasX && $y == $sasY) {
echo '<span class="bird">W</span>';
} else {
echo '<span class="empty">.</span>';
}
echo ( $x != $mapSize-1) ? " " : " ";
}
echo "\n";
}
echo "</pre></div>\n";
} while ($pigeonX != $homeX || $pigeonY != $homeY || $pigeonX != $sasX || $pigeonY != $sasY);
?>
</body>
</html>