PhP Simulation Script Using Conditional Statements.

This script simulates a dog moving to its kennel. It consists of all conditional statements except switch. Initially we set to random positions for the dog and the kennel using the php function rand(). We set up the position using the x, y cordinates. Here i have used a 10X10 square. you can check out the script given below. You can see the demo here. Simulation Demo
<html>
<title>Dog</title>
<head>
<link rel="stylesheet" type="text/css" href="style.css"/>
<style type="text/css">
div.map
{
float: left;
margin: 10px;
padding:1em;

background: white;
border: 1px solid;
border-color: #e5e5e5 #dbdbdb #d2d2d2;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
-webkit-box-shadow: rgba(0, 0, 0, 0.3) 0 1px 3px;
-moz-box-shadow: rgba(0,0,0,0.3) 0 1px 3px;
box-shadow: rgba(0, 0, 0, 0.3) 0 1px 3px;
}

.header{
position: fixed;
height: 50px;
width: 100%;
top: 0;
left: 0;
border-top: 4px solid #a1cb2f;
background: #fff;
-moz-box-shadow: 0 2px 4px 0px rgba(0, 0, 0, 0.16);
-webkit-box-shadow: 0 2px 4px 0px rgba(0, 0, 0, 0.16);
box-shadow: 0 2px 4px 0px rgba(0, 0, 0, 0.16);
z-index: 999999;
}

#banner h1 {
line-height: 60px;
}
span.kennel ,span.dog
{
font-weignt:bold;
}
span.empty
{
color: #666;
}
</style>
</head>
<body>
<div class="header">
<div> <input type="button" align="center" onclick="javascript:history.go(0)" class="blu-btn" value="Click Here To View New Random Results"/> </div>
</div>
<?php

$squaresize =10; //sets the square size to create a 10X10 box

/*the following do while loop executes till there is a difference of 5 units between the dog and the kennel, either in x or y direction */
do{
$kennelX = rand(1,$squaresize-1);
$kennelY = rand(1,$squaresize-1);
$dogX = rand(1 , $squaresize-1);
$dogY = rand(1 , $squaresize-1);
}while((abs($kennelX-$dogX)<$squaresize/2) && (abs($kennelY-$dogY)<$squaresize/2));
do
{
if($dogX<$kennelX)
$dogX++;
elseif($dogX>$kennelX)
$dogX--;
if($dogY<$kennelY)
$dogY++;
elseif($dogY>$kennelY)
$dogY--;
echo '<div class="map" style="width:auto"><pre>';
for($y=0;$y<$squaresize;$y++){
for($x=0;$x<$squaresize;$x++) {
if(($y==$kennelY)&&($x==$kennelX))
{
echo '<span class="kennel"><img src="home.png"></span>'; //kennel is set
}
elseif (($y==$dogY)&&($x==$dogX))
{
echo '<span class="kennel"><img src="dog.png"></span>'; //dog is set
}
else
{
echo '<span class="empty">.</span>'; //prints empty square
}
echo ($x!= $squaresize-1)?" ":"";
}
echo "<br/>n";
}
echo "</pre></div>n";

}while ($dogX!=$kennelX || $dogY!=$kennelY);
?>
</body>
</html>

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