//var wallwidth = viewwidth / viewsteps / 2;
//var metawallwidth = viewwidth / viewsteps / 2;
//var wallheight = viewheight / viewsteps / 2;
var sumoftruthpast = 0;
var sumoftruthpresent = 0;
var sumoftruthfuture = 0;

var viewsteps = 99;
var xpos = 0;
var ypos = 0;
var directions = [[0,-1] , [1,0] , [0,1] , [-1,0]]; //n,e,s,w use directions[direction]
var leftstep = [[-1,0] , [0,-1] , [1,0] , [0,1]]; //based on direction
var rightstep = [[1,0] , [0,1] , [-1,0] , [0,-1]]; //based on direction
var direction = 2; //s
var news = ['N','E','S','W'];
var leftview = [3,0,1,2]; //use leftview[direction]
var frontview = [0,1,2,3];
var rearview = [2,3,0,1];
var rightview = [1,2,3,0];

//create arrays for wall widths and heights
var leftover = new Array();
var leftoverarray = new Array();
var wallwidtharray = new Array();
var wallheightarray = new Array();
var xdelta = new Array();
var baseheightarray = new Array();
lastheight = viewheight / 2;
//basex on x = Px/Pz with Px = 1
function f (input) //function must output from 1 - 0
{
var output = 1 / (input);
//if (input == 1) {return .9};//fix first step
return output;
};

//first wall shows narrow as it is in our square a = 0 and a = 1, points 1 and .9
var firststep = .8;
a = 0;
xdelta[a] = 1 - firststep;
wallwidtharray[a] = xdelta[a] * (viewwidth / 2);
wallheightarray[a] = wallwidtharray[a] * viewheight / viewwidth;
leftover[a] = firststep; //oddly this works as the sum of the above series = 1
//leftover[a] = f(a + 1); //oddly this works as the sum of the above series = 1
leftoverarray[a] = leftover[a] * (viewwidth / 2); //amount of viewscreen left when we hit a wall
baseheightarray[a] = lastheight - wallheightarray[a];
lastheight = baseheightarray[a];
a = 1;
xdelta[a] = firststep - f(a + 1);
wallwidtharray[a] = xdelta[a] * (viewwidth / 2);
wallheightarray[a] = wallwidtharray[a] * viewheight / viewwidth;
leftover[a] = f(a + 1); //oddly this works as the sum of the above series = 1
leftoverarray[a] = leftover[a] * (viewwidth / 2); //amount of viewscreen left when we hit a wall
baseheightarray[a] = lastheight - wallheightarray[a];
lastheight = baseheightarray[a];
for (a = 2 ; a < viewsteps ; a++)
    {
    //difference between x(a) and x(a+1)
    //xdelta[a] = (1 / (a + 1)) - (1 / (a + 2));
    xdelta[a] = f(a) - f(a + 1);
    wallwidtharray[a] = xdelta[a] * (viewwidth / 2);
    wallheightarray[a] = wallwidtharray[a] * viewheight / viewwidth;
    //leftover[a] = (1 / (a + 2)); //oddly this works as the sum of the above series = 1
    leftover[a] = f(a + 1); //oddly this works as the sum of the above series = 1
    leftoverarray[a] = leftover[a] * (viewwidth / 2); //amount of viewscreen left when we hit a wall
    baseheightarray[a] = lastheight - wallheightarray[a];
    lastheight = baseheightarray[a];
    }

var oldcell = document.getElementById('cell_0_0'); //need this to redraw little man
drawmaze();

function drawmaze()
{
oldcell.style.backgroundColor = 'white';
document.getElementById('cell_' + xpos + '_' + ypos).style.backgroundColor = 'red';

document.getElementById('top').innerHTML = "<table CELLPADDING='0' CELLSPACING='0'><TR VALIGN='BOTTOM'>" + printview(0, xpos , ypos , direction , 0) + "</TR></table>";
document.getElementById('bottom').innerHTML = "<table CELLPADDING='0' CELLSPACING='0'><TR VALIGN='TOP'>" + printview(1, xpos , ypos , direction , 0) + "</TR></table>";

var leftmessage = '';
var rightmessage = '';
var frontmessage = '';
var rearmessage = '';

if (maze[xpos][ypos][leftview[direction]] != 'T') {	leftmessage = ' There is a passage to your left.'}
if (maze[xpos][ypos][rightview[direction]] != 'T') {	rightmessage = ' There is a passage to your right.'}
if (maze[xpos][ypos][rearview[direction]] != 'T') {	rearmessage = ' There is a passage behind you.'}
document.getElementById('message').innerHTML = leftmessage + rightmessage + rearmessage + ' You are facing ' + news[direction] + '. You are at grid reference [' + xpos + ',' + ypos + ']';

//compass
document.getElementById('north').innerHTML = news[frontview[direction]];
document.getElementById('south').innerHTML = news[rearview[direction]];
document.getElementById('east').innerHTML = news[rightview[direction]];
document.getElementById('west').innerHTML = news[leftview[direction]];
};

function printview(topbottom , x , y , direction , viewdistance)
{
var wallwidth = wallwidtharray[viewdistance];
var wallheight = wallheightarray[viewdistance];
var baseheight = baseheightarray[viewdistance];
var endofhallwidth = leftoverarray[viewdistance];

//document.getElementById('message').innerHTML = 'width ' + wallwidth + ' endofhallwidth ' + endofhallwidth + ' total ' + (2 * endofhallwidth) + (2 * wallwidth * viewdistance);

//do next view down the hall
var x = xpos + (viewdistance * directions[direction][0]);  //x
var y = ypos + (viewdistance * directions[direction][1]);  //y

//reached limits of maze
if ((x < 0) || (x > mazewidth)) {return('')}
if ((y < 0) || (y > mazeheight)) {return('')}

var lwall;
var cwall;
var rwall;

var base = "<img src='base.gif' STYLE='height:" + baseheight + "pt; width:" + wallwidth + "pt;'</img>";
var topwall = "<img src='base.gif' STYLE='border-right: 1pt black solid; border-left: 1pt black solid; height:" + baseheight + "pt; width:" + wallwidth + "pt;'</img>";
var bottomwall = "<img src='base.gif' STYLE='border-right: 1pt black solid; border-left: 1pt black solid; height:" + baseheight + "pt; width:" + wallwidth + "pt;'</img>";
var square = "<DIV STYLE='height: " + wallheight + "pt; width: " + wallwidth + "pt; font-size: 0pt;'></DIV>"; //requied for when we are facing up against a wall
var cwall = "<TD><img src='base.gif' STYLE='border-right: 1pt black solid; border-left: 1pt black solid; height:" + baseheight + "pt; width:" + 2 * endofhallwidth + "pt;'</img></TD>";
var topleft = "<img src='topleft.gif' STYLE='height:" + wallheight + "pt; width:" + wallwidth + "pt;'</img>" + "<br>" + base;
var topright = "<img src='topright.gif' STYLE='height:" + wallheight + "pt; width:" + wallwidth + "pt;'</img>" + "<br>" + base;
var bottomleft = base + "<br>" + "<img src='bottomleft.gif' STYLE='height:" + wallheight + "pt; width:" + wallwidth + "pt;'</img>";
var bottomright = base + "<br>" + "<img src='bottomright.gif' STYLE='height:" + wallheight + "pt; width:" + wallwidth + "pt;'</img>";
//far wall will fill remaining view space!
//var cwall = "<TD><img src='base.gif' STYLE='border-right: 1pt black solid; border-left: 1pt black solid; height:" + (wallheight * (viewsteps - viewdistance)) + "pt; width:" + 2 * wallwidth * (viewsteps - viewdistance) + "pt;'</img></TD>";

//look for a wall to the left
var wallleft = maze[x][y][leftview[direction]];
if (wallleft == 'T') //there is one
	{
	if (topbottom == 0) {var lwall = "<TD>" + topleft + "</TD>"}
	if (topbottom == 1) {var lwall = "<TD>" + bottomleft + "</TD>"}
	}
if (wallleft == 'F') //there isn't one
	{
	if (topbottom == 0) {var lwall = "<TD>" + square + topwall + "</TD>"}
	if (topbottom == 1) {var lwall = "<TD>" + bottomwall + square + "</TD>"}
	}

//if (wallleft == 'S') {var lwall = "<TD width='" + wallwidth + "'></TD>"} //it is the start
if (wallleft == 'S') {var lwall = "<TD STYLE='width: " + wallwidth + "pt;'></TD>"} //it is the start
//if (wallleft == 'E') {var lwall = "<TD width='" + wallwidth + "'></TD>"} //it is the exit
if (wallleft == 'E') {var lwall = "<TD STYLE='width: " + wallwidth + "pt;'></TD>"} //it is the exit

//look for a wall to the right
var wallright = maze[x][y][rightview[direction]];	
if (wallright == 'T') //there is one
	{
	if (topbottom == 0) {var rwall = "<TD>" + topright + "</TD>"}
	if (topbottom == 1) {var rwall = "<TD>" + bottomright + "</TD>"}
	}
if (wallright == 'F') //there isn't one
	{
	if (topbottom == 0) {var rwall = "<TD>" + square + topwall + "</TD>"}
	if (topbottom == 1) {var rwall = "<TD>" + bottomwall + square + "</TD>"}
	}

if (wallright == 'S') {var rwall = "<TD STYLE='width: " + wallwidth + "pt;'></TD>"}
if (wallright == 'E') {var rwall = "<TD STYLE='width: " + wallwidth + "pt;'></TD>"}

//check for wall in face here
iswallinfront = maze[x][y][frontview[direction]];
if (iswallinfront == 'T') 
	{
	if (topbottom == 0)
		{
        } 
	if (topbottom == 1) 	
		{
        }
	return (lwall + cwall + rwall); //we hit a wall return center wall string and end
	}
if (iswallinfront == 'S') //start door
	{
	var cwall = "<TD><DIV STYLE='width: " + 2 * endofhallwidth + "pt; height: " + baseheight + "pt;'></DIV></TD>";
	return (lwall + cwall + rwall); //we hit a wall return center wall string and end
	}
if (iswallinfront == 'E') //exit door
	{
	var cwall = "<TD><DIV STYLE='width: " + 2 * endofhallwidth + "pt; height: " + baseheight + "pt;'></DIV></TD>";
	return (lwall + cwall + rwall); //we hit a wall return center wall string and end
	}

viewdistance++; //next view down the hall
return (lwall + printview(topbottom , x , y , direction , viewdistance) + rwall); //recursive call to this routine starting from closer walls (left and right) then moving farther (inner walls)
}	 
	 
function keyinput(keyCode)
{
var xmove = 0;
var ymove = 0;

if (keyCode == 37) 
    {
    sumoftruthpast = sumoftruthpast + 1;
    sumoftruthpresent = sumoftruthpresent + 2;
    sumoftruthfuture = sumoftruthfuture + 0;
    direction = direction - 1;
	if (direction < 0) {direction = 3}
	} //left
if (keyCode == 38) 
	{
	sumoftruthpast = sumoftruthpast + 0;
    	sumoftruthpresent = sumoftruthpresent + 1;
    	sumoftruthfuture = sumoftruthfuture + 2;
	wallinfront = maze[xpos][ypos][frontview[direction]];
	if (wallinfront == 'T') {return('')}
	if (wallinfront == 'E') 
		{
		alert('You have escaped the maze!');
		sumoftruthpast = sumoftruthpast % 78;
		sumoftruthpresent = sumoftruthpresent % 78;
		sumoftruthfuture = sumoftruthfuture % 78;
		var totalsum = sumoftruthpast + sumoftruthpresent + sumoftruthfuture;

		var core_path = 'http://www.emogic.com/cgi/tarot/tarot.cgi?vars=core_vars.cgi&templatepath=../../tarot/spreads/three_card.html&databasepath=../../tarot/databases/emogic.cgi&Querent=Querent&Question=Your path adds up to ' + totalsum;
		//readingvalue = sumoftruth % 78;
        		//totalreading = '(' + sumoftruthpast + ',' + sumoftruthpresent + ',' + sumoftruthfuture + ')';
        		totalreading = sumoftruthpast + ',' + sumoftruthpresent + ',' + sumoftruthfuture;
		var pathh = core_path + '&records=' + totalreading + '&custom1=Querent' + '&custom10=' + totalreading;
		//window.open(core_path , '_blank' , 'fullscreen=1,scrollbars=1');
		window.open(core_path , '_blank');
		}
	if (wallinfront == 'S') {alert('This is the start of the maze! Turn around.')}
	xmove = directions[frontview[direction]][0];
	ymove = directions[frontview[direction]][1];
	} //up
if (keyCode == 39) 
    {
    sumoftruthpast = sumoftruthpast + 1;
    sumoftruthpresent = sumoftruthpresent + 2;
    sumoftruthfuture = sumoftruthfuture + 0;
	direction = direction + 1;
	if (direction > 3) {direction = 0}
    } //right
if (keyCode == 40) 
	{
	sumoftruthpast = sumoftruthpast + 2;
	sumoftruthpresent = sumoftruthpresent + 1;
	sumoftruthfuture = sumoftruthfuture + 0;
	wallinrear = maze[xpos][ypos][rearview[direction]];
	if (wallinrear == 'T') {return('')}
	xmove = directions[rearview[direction]][0];
	ymove = directions[rearview[direction]][1];
	} //down

if ((xpos + xmove < 0) || (xpos  + xmove > mazewidth - 1)) {return('')}
if ((ypos  + ymove  < 0) || (ypos  + ymove > mazeheight - 1)) {return('')}

oldcell = document.getElementById('cell_' + xpos + '_' + ypos);

xpos = xpos + xmove;
ypos = ypos + ymove;

drawmaze();
}	
	 	 
var Cookie   = new Object();
Cookie.day   = 86400000;
Cookie.week  = Cookie.day * 7;
Cookie.month = Cookie.day * 31;
Cookie.year  = Cookie.day * 365;

function getCookie(name) {
  var cookies = document.cookie;
  var start = cookies.indexOf(name + '=');
  if (start == -1) return null;
  var len = start + name.length + 1;
  var end = cookies.indexOf(';',len);
  if (end == -1) end = cookies.length;
  return unescape(cookies.substring(len,end));
}

function setCookie(name, value, expires, path, domain, secure) {
  value = escape(value);
  expires = (expires) ? ';expires=' + expires.toGMTString() :'';
  path    = (path)    ? ';path='    + path                  :'';
  domain  = (domain)  ? ';domain='  + domain                :'';
  secure  = (secure)  ? ';secure'                           :'';

  document.cookie =
    name + '=' + value + expires + path + domain + secure;
}

function deleteCookie(name, path, domain) {
  var expires = ';expires=Thu, 01-Jan-70 00:00:01 GMT';
  (path)    ? ';path='    + path                  : '';
  (domain)  ? ';domain='  + domain                : '';

  if (getCookie(name))
    document.cookie = name + '=' + expires + path + domain;
}