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Code viewer for World: Spider Paradise - arrows t...



// Demo of 3d models
  
// skeleton credit
// http://tf3dm.com/3d-model/skeleton-with-organs-91102.html

// Peter Parker credit
// http://tf3dm.com/download-page.php?url=spider-man-4998

// male credit
// https://threejs.org/examples/#webgl_loader_obj





 
const	 	CLOCKTICK 	= 150;				// speed of run - move things every n milliseconds
const		MAXSTEPS 	= 1000;				// length of a run before final score
 



//---- global constants: -------------------------------------------------------


const gridsize = 20;					// number of squares along side of world	   
const squaresize = 100;					// size of square in pixels
const MAXPOS = gridsize * squaresize;		// length of one side in pixels 
	
const NOBOXES =  Math.trunc ( (gridsize * gridsize) / 4 );


const SKYCOLOR 	= 0xffffcc;				// a number, not a string 
const BLANKCOLOR 	= SKYCOLOR ;			// make objects this color until texture arrives (from asynchronous file read)

const  LIGHTCOLOR 	= 0xffffff ;



const startRadiusConst	 	= MAXPOS * 0.8 ;		// distance from centre to start the camera at
const skyboxConst			= MAXPOS * 3 ;		// where to put skybox 
const maxRadiusConst 			= MAXPOS * 5 ;		// maximum distance from camera we will render things  




//--- Mind can pick one of these actions -----------------

const ACTION_LEFT 		= 0;		   
const ACTION_RIGHT 		= 1;
const ACTION_UP 			= 2;		 
const ACTION_DOWN 		= 3;
const ACTION_STAYSTILL 		= 4;

const JUMP_UP = 5;
const JUMP_DOWN = 6;
const JUMP_LEFT = 7;
const JUMP_RIGHT = 8;


// contents of a grid square

const GRID_BLANK 	= 0;
const GRID_WALL 	= 1;
const GRID_MAZE 	= 2;
 


 


 
// --- some useful random functions  -------------------------------------------


function randomfloatAtoB ( A, B )			 
{
 return ( A + ( Math.random() * (B-A) ) );
}

function randomintAtoB ( A, B )			 
{
 return  ( Math.round ( randomfloatAtoB ( A, B ) ) );
}
  
function randomBoolean()			 
{
 if ( Math.random() < 0.5 ) { return false; }
 else { return true; }
}


function randomPick ( a, b )
{
 if ( randomBoolean() ) 
  return a;
 else
  return b;
}






//---- start of World class -------------------------------------------------------
 
function World() { 


// most of World can be private 
// regular "var" syntax means private variables:


var GRID 	= new Array(gridsize);			// can query GRID about whether squares are occupied, will in fact be initialised as a 2D array   
var WALLS 	= new Array ( 4 * gridsize );		// need to keep handle to each wall block object so can find it later to paint it 
var MAZE 	= new Array ( NOBOXES );
var theagent, theenemy, theenemy2, theenemy3, theenemy4;		  

var agentRotation = 0;
var enemyRotation = 0;		  // with 3D models, current rotation away from default orientation
var enemyRotation2 = 0;
var enemyRotation3 = 0;
var enemyRotation4 = 0;

// enemy and agent position on squares
var ei, ej, ai, aj, e2i, e2j, e3i, e3j, e4i, e4j;

var badsteps;
var goodsteps;
var  step;

  	var self = this;						// needed for private fn to call public fn - see below  





function initGrid()
{
 for (var i = 0; i < gridsize ; i++) 
 {
  GRID[i] = new Array(gridsize);		// each element is an array 

  for (var j = 0; j < gridsize ; j++) 
  {
   GRID[i][j] = GRID_BLANK ;
  }
 }
}


function occupied ( i, j )		// is this square occupied
{
 if ( ( ei == i ) && ( ej == j ) ) return true;		// variable objects 
 if ( ( ai == i ) && ( aj == j ) ) return true;
 if ( ( e2i == i ) && ( e2j == j ) ) return true;
 if ( ( e3i == i ) && ( e3j == j ) ) return true;
 if ( ( e4i == i ) && ( e4j == j ) ) return true;
 if ( GRID[i][j] == GRID_WALL ) return true;		// fixed objects	 
 if ( GRID[i][j] == GRID_MAZE ) return true;		 
	 
 return false;
}


 
function translate ( x ) 
{
 return ( x - ( MAXPOS/2 ) );
}





// --- asynch load textures from file ----------------------------------------
// credits:
// http://commons.wikimedia.org/wiki/File:Old_door_handles.jpg?uselang=en-gb
// https://commons.wikimedia.org/wiki/Category:Pac-Man_icons
// https://commons.wikimedia.org/wiki/Category:Skull_and_crossbone_icons
  

function loadTextures()
{
	var manager = new THREE.LoadingManager();		
	var loader = new THREE.OBJLoader( manager );
			
 loader.load( "/uploads/ashcass/trantula.obj", buildenemy );


 loader.load( "/uploads/ashcass/trantula.obj", buildenemy2 );

 loader.load( "/uploads/ashcass/trantula.obj", buildenemy3 );
 
 loader.load( "/uploads/ashcass/fly.obj", buildenemy4 );
  
  
// load simple OBJ
	 loader.load( "/uploads/ashcass/fly.obj", buildagent );




 var loader1 = new THREE.TextureLoader();
 loader1.load ( '/uploads/ashcass/brick.jpg',		function ( thetexture ) {			 
		thetexture.minFilter = THREE.LinearFilter;
		paintWalls ( new THREE.MeshBasicMaterial( { map: thetexture } ) );
	} ); 

 var loader2 = new THREE.TextureLoader();
 loader2.load ( '/uploads/starter/latin.jpg',		function ( thetexture ) {			 
		thetexture.minFilter = THREE.LinearFilter;
		paintMaze ( new THREE.MeshBasicMaterial( { map: thetexture } ) );
 	} ); 

}

 
 
function buildenemy ( object ) 
{ 
	object.scale.multiplyScalar ( 1000 );    	  // make 3d object n times bigger 
	object.traverse( paintEnemy );
	theenemy = object;
	threeworld.scene.add( theenemy ); 
}

function paintEnemy ( child ) 
{
	if ( child instanceof THREE.Mesh ) 
	{
      	child.material.map = THREE.ImageUtils.loadTexture( "/uploads/ashcass/hair.jpg" );
	}
}

function buildenemy2 ( object ) 
{ 
	object.scale.multiplyScalar ( 1000 );    	  // make 3d object n times bigger 
	object.traverse( paintEnemy2 );
	theenemy2 = object;
	threeworld.scene.add( theenemy2 ); 
}

function paintEnemy2 ( child ) 
{
	if ( child instanceof THREE.Mesh ) 
	{
      	child.material.map = THREE.ImageUtils.loadTexture( "/uploads/ashcass/hair.jpg" );
	}
}


function buildenemy3 ( object ) 
{ 
	object.scale.multiplyScalar ( 1000 );    	  // make 3d object n times bigger 
	object.traverse( paintEnemy3 );
	theenemy3 = object;
	threeworld.scene.add( theenemy3 ); 
}

function paintEnemy3 ( child ) 
{
	if ( child instanceof THREE.Mesh ) 
	{
      	child.material.map = THREE.ImageUtils.loadTexture( "/uploads/ashcass/hair.jpg" );
	}
}

function buildenemy4 ( object ) 
{ 
	object.scale.multiplyScalar ( 25000 );    	  // make 3d object n times bigger 
	object.traverse( paintEnemy4 );
	theenemy4 = object;
	threeworld.scene.add( theenemy4 ); 
}

function paintEnemy4 ( child ) 
{
	if ( child instanceof THREE.Mesh ) 
	{
      	child.material.map = THREE.ImageUtils.loadTexture( "/uploads/ashcass/gold.jpg" );
	}
}


function buildagent ( object ) 
{ 
    object.scale.multiplyScalar ( 25000 ); 
	object.traverse( paintAgent );
	theagent = object;
	threeworld.scene.add( theagent ); 
}

function paintAgent ( child ) 
{
	if ( child instanceof THREE.Mesh ) 
	{
       	child.material.map = THREE.ImageUtils.loadTexture( "/uploads/ashcass/flytext.jpg" );
	}
}
 



function addparker ( object )
{
	object.scale.multiplyScalar ( 70 );    	   
	theagent = object;
	threeworld.scene.add( theagent ); 
}





function initSkybox() 
{
// urban photographic skyboxes, credit:
// http://opengameart.org/content/urban-skyboxes

   var materialArray = [
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snap3.png" ), side: THREE.BackSide } ) ),
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snap1.png" ), side: THREE.BackSide } ) ),
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snapsky.png" ), side: THREE.BackSide } ) ),
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snapfloor.png" ), side: THREE.BackSide } ) ),
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snap2.png" ), side: THREE.BackSide } ) ),
 	( new THREE.MeshBasicMaterial ( { map: THREE.ImageUtils.loadTexture( "/uploads/ashcass/snap4.png" ), side: THREE.BackSide } ) ),
 	];


  var skyGeometry = new THREE.CubeGeometry ( skyboxConst, skyboxConst, skyboxConst );	
  var skyMaterial = new THREE.MeshFaceMaterial ( materialArray );
  var theskybox = new THREE.Mesh ( skyGeometry, skyMaterial );
  threeworld.scene.add( theskybox );						// We are inside a giant cube
}




   
 
function initLogicalWalls()		// set up logical walls in data structure, whether doing graphical run or not	
{
 for (var i = 0; i < gridsize ; i++) 
  for (var j = 0; j < gridsize ; j++) 
   if ( ( i==0 ) || ( i==gridsize-1 ) || ( j==0 ) || ( j==gridsize-1 ) )
   {
    	GRID[i][j] = GRID_WALL ;		 
   }
}


function initThreeWalls()		// graphical run only, set up blank boxes, painted later 	
{
 var t = 0;
 for (var i = 0; i < gridsize ; i++) 
  for (var j = 0; j < gridsize ; j++) 
   if ( GRID[i][j] == GRID_WALL )
   {
 	 var shape    = new THREE.BoxGeometry( squaresize, squaresize, squaresize );			 
 	 var thecube  = new THREE.Mesh( shape );
	 thecube.material.color.setHex( BLANKCOLOR  );			  
 
    	 thecube.position.x = translate ( i * squaresize );   		// translate my simple (i,j) block-numbering coordinates to three.js (x,y,z) coordinates 
    	 thecube.position.z = translate ( j * squaresize );   	
    	 thecube.position.y =  0;	
 
 	 threeworld.scene.add(thecube);
	 WALLS[t] = thecube;		// save it for later
	 t++; 
   }
}


function paintWalls ( material )		// paint blank boxes  
{
 for ( var i = 0; i < WALLS.length; i++ )
 { 
   if ( WALLS[i] )  WALLS[i].material = material;
 }
}





function initLogicalMaze()		 
{
 for ( var c=1 ; c <= NOBOXES ; c++ )
 {
  	var i = randomintAtoB(1,gridsize-2);	// inner squares are 1 to gridsize-2
  	var j = randomintAtoB(1,gridsize-2);
    	GRID[i][j] = GRID_MAZE ;		 
 }
}


function initThreeMaze()		  	
{
 var t = 0;
 for (var i = 0; i < gridsize ; i++) 
  for (var j = 0; j < gridsize ; j++) 
   if ( GRID[i][j] == GRID_MAZE )
   {
   	var shape    = new THREE.BoxGeometry( squaresize, squaresize, squaresize );			 
  	var thecube  = new THREE.Mesh( shape );
	thecube.material.color.setHex( BLANKCOLOR  );			  

  	thecube.position.x = translate ( i * squaresize );   	
  	thecube.position.z = translate ( j * squaresize );   	
  	thecube.position.y =  0;	
 
 	threeworld.scene.add(thecube);
	MAZE[t] = thecube;		// save it for later
	t++; 
   }
}


function paintMaze ( material )		 
{
 for ( var i = 0; i < MAZE.length; i++ )
 { 
   if ( MAZE[i] )  MAZE[i].material = material;
 }
}




// --- enemy functions -----------------------------------


function drawEnemy()		// given ei, ej, draw it 
{
if ( theenemy )
{
  var x = translate ( ei * squaresize );   	
  var z = translate ( ej * squaresize );   	
  var y =   ( 0 );   	

 theenemy.position.x = x;
 theenemy.position.y = y;
 theenemy.position.z = z;
 
 threeworld.lookat.copy ( theenemy.position );		// if camera moving, look back at where the enemy is  
 threeworld.lookat.y = ( squaresize * 1.5 );     // point camera higher up
}
}



function initLogicalEnemy()
{
// start in random location:
 var i, j;
 do
 {
  i = randomintAtoB(1,8);
  j = randomintAtoB(1,8);
 }
 while ( occupied(i,j) );  	  // search for empty square 

 ei = i;
 ej = j;
}




function moveLogicalEnemy( a )
{ 
 var i = ei;
 var j = ej;		 



      if ( a == ACTION_LEFT ) 	{ i--;    }
 else if ( a == ACTION_RIGHT ) 	{ i++;    }
 else if ( a == ACTION_UP ) 	{ j++;    }
 else if ( a == ACTION_DOWN ) 	{ j--;    }

 if ( ! occupied(i,j) ) 
 {
  if ( true  )
  {
	// if going to actually move, then turn body towards move
	// rotate by some amount of radians from the normal position 
	// in degrees: +0, +90, +180, +270

	      if ( a == ACTION_LEFT ) 	{  rotateAgentTowards ( 3 * (Math.PI / 2) ); }
	 else if ( a == ACTION_RIGHT ) 	{  rotateAgentTowards ( 1 * (Math.PI / 2) ); }
	 else if ( a == ACTION_UP ) 		{  rotateAgentTowards ( 0 * (Math.PI / 2) ); }
	 else if ( a == ACTION_DOWN ) 	{  rotateAgentTowards ( 2 * (Math.PI / 2) ); }
  }
  ei = i;
  ej = j;
 }
}


function drawEnemy2()		// given e2i, e2j, draw it 
{
if ( theenemy2 )
{
  var x = translate ( e2i * squaresize );   	
  var z = translate ( e2j * squaresize );   	
  var y =   ( 0 );   	

 theenemy2.position.x = x;
 theenemy2.position.y = y;
 theenemy2.position.z = z;
 
 threeworld.lookat.copy ( theenemy2.position );		// if camera moving, look back at where the enemy is  
 threeworld.lookat.y = ( squaresize * 1.5 );     // point camera higher up
}
}



function initLogicalEnemy2()
{
// start in random location:
 var i, j;
 do
 {
  i = randomintAtoB(8,17);
  j = randomintAtoB(1,17);
 }
 while ( occupied(i,j) );  	  // search for empty square 

 e2i = i;
 e2j = j;
}


function moveLogicalEnemy2(a)
{ 
 var i = e2i;
 var j = e2j;		 



      if ( a == ACTION_LEFT ) 	{ i--;    }
 else if ( a == ACTION_RIGHT ) 	{ i++;    }
 else if ( a == ACTION_UP ) 	{ j++;    }
 else if ( a == ACTION_DOWN ) 	{ j--;    }

 if ( ! occupied(i,j) ) 
 {
  if ( true  )
  {
	// if going to actually move, then turn body towards move
	// rotate by some amount of radians from the normal position 
	// in degrees: +0, +90, +180, +270

	      if ( a == ACTION_LEFT ) 	{  rotateAgentTowards ( 3 * (Math.PI / 2) ); }
	 else if ( a == ACTION_RIGHT ) 	{  rotateAgentTowards ( 1 * (Math.PI / 2) ); }
	 else if ( a == ACTION_UP ) 		{  rotateAgentTowards ( 0 * (Math.PI / 2) ); }
	 else if ( a == ACTION_DOWN ) 	{  rotateAgentTowards ( 2 * (Math.PI / 2) ); }
  }
  e2i = i;
  e2j = j;
 }
}


function drawEnemy3()		// given ei, ej, draw it 
{
if ( theenemy3 )
{
  var x = translate ( e3i * squaresize );   	
  var z = translate ( e3j * squaresize );   	
  var y =   ( 0 );   	

 theenemy3.position.x = x;
 theenemy3.position.y = y;
 theenemy3.position.z = z;
 
 threeworld.lookat.copy ( theenemy3.position );		// if camera moving, look back at where the enemy is  
 threeworld.lookat.y = ( squaresize * 1.5 );     // point camera higher up
}
}



function initLogicalEnemy3()
{
// start in random location:
 var i, j;
 do
 {
  i = randomintAtoB(1,17);
  j = randomintAtoB(8,17);
 }
 while ( occupied(i,j) );  	  // search for empty square 

 e3i = i;
 e3j = j;
}




function moveLogicalEnemy3( a )
{ 
 var i = e3i;
 var j = e3j;		 



      if ( a == ACTION_LEFT ) 	{ i--;    }
 else if ( a == ACTION_RIGHT ) 	{ i++;    }
 else if ( a == ACTION_UP ) 	{ j++;    }
 else if ( a == ACTION_DOWN ) 	{ j--;    }

 if ( ! occupied(i,j) ) 
 {
  if ( true  )
  {


	      if ( a == ACTION_LEFT ) 	{  rotateAgentTowards ( 3 * (Math.PI / 2) ); }
	 else if ( a == ACTION_RIGHT ) 	{  rotateAgentTowards ( 1 * (Math.PI / 2) ); }
	 else if ( a == ACTION_UP ) 		{  rotateAgentTowards ( 0 * (Math.PI / 2) ); }
	 else if ( a == ACTION_DOWN ) 	{  rotateAgentTowards ( 2 * (Math.PI / 2) ); }
  }
  e3i = i;
  e3j = j;
 }
}

function drawEnemy4()		// given ei, ej, draw it 
{
if ( theenemy4 )
{
  var x = translate ( e4i * squaresize );   	
  var z = translate ( e4j * squaresize );   	
  var y =   ( 0 );   	

 theenemy4.position.x = x;
 theenemy4.position.y = y;
 theenemy4.position.z = z;
 
 threeworld.lookat.copy ( theenemy4.position );		// if camera moving, look back at where the enemy is  
 threeworld.lookat.y = ( squaresize * 1.5 );     // point camera higher up
}
}



function initLogicalEnemy4()
{
// start in random location:
 var i, j;
 do
 {
  i = randomintAtoB(8,17);
  j = randomintAtoB(8,17);
 }
 while ( occupied(i,j) );  	  // search for empty square 

 e4i = i;
 e4j = j;
}



function moveLogicalEnemy4( a )
{ 
 var i = e4i;
 var j = e4j;		 



      if ( a == ACTION_LEFT ) 	{ i--;    }
 else if ( a == ACTION_RIGHT ) 	{ i++;    }
 else if ( a == ACTION_UP ) 	{ j++;    }
 else if ( a == ACTION_DOWN ) 	{ j--;    }

 if ( ! occupied(i,j) ) 
 {
  if ( true  )
  {
	// if going to actually move, then turn body towards move
	// rotate by some amount of radians from the normal position 
	// in degrees: +0, +90, +180, +270

	      if ( a == ACTION_LEFT ) 	{  rotateAgentTowards ( 3 * (Math.PI / 2) ); }
	 else if ( a == ACTION_RIGHT ) 	{  rotateAgentTowards ( 1 * (Math.PI / 2) ); }
	 else if ( a == ACTION_UP ) 		{  rotateAgentTowards ( 0 * (Math.PI / 2) ); }
	 else if ( a == ACTION_DOWN ) 	{  rotateAgentTowards ( 2 * (Math.PI / 2) ); }
  }
  e4i = i;
  e4j = j;
 }
}



const INTERIMROT = 10;		// number of interim rotations drawn when model turns round

// all rotations positive 0 to 2 PI 







// interim renders not working
// temporary solution - rotate half-way - will continue the rotation later

function rotateEnemyTowards ( newRotation )		
{
 if ( enemyRotation == newRotation ) return;
 // else 
 var x = ( enemyRotation + newRotation ) / 2; 
 theenemy.rotation.set ( 0, x, 0 );
 enemyRotation = x;	
}

function rotateEnemy2Towards ( newRotation )		
{
 if ( enemyRotation2 == newRotation ) return;
 // else 
 var y = ( enemyRotation2 + newRotation ) / 2; 
 theenemy2.rotation.set ( 0, y, 0 );
 enemyRotation2 = y;	
}

function rotateEnemy3Towards ( newRotation )		
{
 if ( enemyRotation3 == newRotation ) return;
 // else 
 var y = ( enemyRotation3 + newRotation ) / 2; 
 theenemy3.rotation.set ( 0, y, 0 );
 enemyRotation3 = y;	
}

function rotateEnemy4Towards ( newRotation )		
{
 if ( enemyRotation4 == newRotation ) return;
 // else 
 var y = ( enemyRotation4 + newRotation ) / 2; 
 theenemy4.rotation.set ( 0, y, 0 );
 enemyRotation4 = y;	
}
// --- agent functions -----------------------------------


function drawAgent()	// given ai, aj, draw it 
{
if ( theagent )
{
  var x = translate ( ai * squaresize );   	
  var z = translate ( aj * squaresize );   	
  var y =   ( 0 );   	

 theagent.position.x = x;
 theagent.position.y = y;
 theagent.position.z = z;
 
 threeworld.follow.copy ( theagent.position );		// follow vector = agent position (for camera following agent)
 threeworld.follow.y = ( squaresize * 1.5 );     // put camera higher up
}
}


function initLogicalAgent()
{
// start in random location:
 var i, j;
 do
 {
  i = 1;
  j = 1;
 }
 while ( occupied(i,j) );  	  // search for empty square 

 ai = i;
 aj = j;
}



function moveLogicalAgent( a )			// this is called by the infrastructure that gets action a from the Mind 
{ 
 var i = ai;
 var j = aj;		 



      if ( a == ACTION_LEFT ) 	{ i--;    }
 else if ( a == ACTION_RIGHT ) 	{ i++;    }
 else if ( a == ACTION_UP ) 	{ j++;    }
 else if ( a == ACTION_DOWN ) 	{ j--;    }
 else if ( a == JUMP_LEFT ) 	{ i = i-2;    }
 else if ( a == JUMP_RIGHT ) 	{ i= i+2;    }
 else if ( a == JUMP_UP ) 	    { j = j+2;    }
 else if ( a == JUMP_DOWN ) 	{ j= j-2;    }

 if ( ! occupied(i,j) ) 
 {
  if ( true  )
  {
	// if going to actually move, then turn body towards move
	// rotate by some amount of radians from the normal position 
	// in degrees: +0, +90, +180, +270

	      if ( a == ACTION_LEFT ) 	{  rotateAgentTowards ( 3 * (Math.PI / 2) ); }
	 else if ( a == ACTION_RIGHT ) 	{  rotateAgentTowards ( 1 * (Math.PI / 2) ); }
	 else if ( a == ACTION_UP ) 		{  rotateAgentTowards ( 0 * (Math.PI / 2) ); }
	 else if ( a == ACTION_DOWN ) 	{  rotateAgentTowards ( 2 * (Math.PI / 2) ); }
  }
  ai = i;
  aj = j;
 }
}
function keyHandler(e)		
// user control 
// Note that this.takeAction(a) is constantly running at same time, redrawing the screen.
{
    if (e.keyCode == 37)  moveLogicalAgent ( ACTION_LEFT 	);
    if (e.keyCode == 38)  moveLogicalAgent ( ACTION_DOWN  	);
    if (e.keyCode == 39)  moveLogicalAgent ( ACTION_RIGHT 	);
    if (e.keyCode == 40)  moveLogicalAgent ( ACTION_UP	);
    if (e.keyCode == 65)  moveLogicalAgent ( JUMP_LEFT 	);
    if (e.keyCode == 87)  moveLogicalAgent ( JUMP_DOWN  	);
    if (e.keyCode == 68)  moveLogicalAgent ( JUMP_RIGHT 	);
    if (e.keyCode == 88)  moveLogicalAgent ( JUMP_UP	);
}


function rotateAgentTowards ( newRotation )		
{
 if ( agentRotation == newRotation ) return;
 // else 
 var x = ( agentRotation + newRotation ) / 2; 
 theagent.rotation.set ( 0, x, 0 );
 agentRotation = x;	
}




 


// --- score: -----------------------------------


function badstep()			// is the enemy within one square of the agent
{
 if ( ( Math.abs(ei - ai) < 2 ) && ( Math.abs(ej - aj) < 2 ) ) return true;
 
 else return false;
}

 
function   updateStatus()		 
{
 var score = self.getScore();
 var status =  "   Step: " + step + " out of " + MAXSTEPS + ". Score: " + score; 

 $("#user_span1").html( status );
}






//--- public functions / interface / API ----------------------------------------------------------


// must have this public variable:

	this.endCondition;			// If set to true, run will end. 


    this.win;

this.newRun = function() 
{
    $("#user_span2").html( "&nbsp; <font color = green > <B> Make it to gold fly without being caught </B> </font> " );
    this.win = false;
  this.endCondition = false;
  badsteps = 0;		
  goodsteps = 0;
  step = 0;


  // define logical data structure for the World, even if no graphical representation:

 	initGrid();
	initLogicalWalls(); 
	initLogicalMaze();
    
	initLogicalAgent();
	initLogicalEnemy();
    initLogicalEnemy2();
    initLogicalEnemy3();
    initLogicalEnemy4();
    

  if ( true  )
  {
	  threeworld.init3d ( startRadiusConst, maxRadiusConst, SKYCOLOR  ); 


		// light
    		var ambient = new THREE.AmbientLight();
    		threeworld.scene.add( ambient );

		
	   	 var thelight = new THREE.DirectionalLight ( LIGHTCOLOR, 3 );
	  	 thelight.position.set ( startRadiusConst, startRadiusConst, startRadiusConst );
	   	 threeworld.scene.add(thelight);
		


		// music
  		var x = "<audio  id=theaudio  src=/uploads/starter/SuspenseStrings.mp3   autoplay loop> </audio>" ;
  		$("#user_span2").html( x );

		// music credit
		// http://www.dl-sounds.com/royalty-free/suspense-strings/



        	initSkybox();
	    	initThreeWalls();
	    	initThreeMaze();

	  loadTextures();			// will return sometime later, but can go ahead and render now
	  document.onkeydown = keyHandler;
  }		
};



this.getState = function()
{
 var x = [ ai, aj, ei, ej ];
  return ( x );  
};


this.takeAction = function ( a )
{
  step++;

  //moveLogicalAgent(a);
  
    if ( ( step % 2 ) == 0 )		// slow the enemy down to every nth step
    moveLogicalEnemy(a);
    moveLogicalEnemy2(a);
    moveLogicalEnemy3(a);
    //moveLogicalEnemy4(a); 

  if ( badstep() )
   badsteps++;
  else
   goodsteps++;

  if ( true  )
  {
   drawAgent();
   drawEnemy();
   drawEnemy2();
   drawEnemy3();
   drawEnemy4();
   updateStatus();
  }
  function die()
{
    if( (((ei == ai-1)&&(ej == aj)) || 
        ((ei== ai+1)&&(aj == ej)) ||
        ((ai == ei)&&(ej==aj+1)) ||
        ((ai == ei)&&(aj-1 == ej)))
        ||
        
        (((ai-1 == e2i)&&(e2j == aj)) || 
        ((ai+1==e2i)&&(aj==e2j)) ||
        ((ai == e2i)&&(e2j==aj+1)) ||
        ((ai == e2i)&&(aj-1 == e2j)))
        ||
        
        (((ai-1 == e3i)&&(e3j == aj)) || 
        ((ai+1==e3i)&&(aj==e3j)) ||
        ((ai == e3i)&&(e3j==aj+1)) ||
        ((ai == e3i)&&(aj-1 == e3j))))
    {
        return true;
    } else return false;
}
    if(die()) 
{
    this.endCondition = true;
    
}


function captureTarget()  {      
        if(((ai-1 == e4i)&&(e4i == aj)) || 
        ((ai+1 == e4i)&&(aj==e4j)) ||
        ((ai == e4i)&&(e4i==aj+1)) ||
        ((ai == e4i)&&(aj-1 == e4j)))
        {
            $("#user_span3").html( "&nbsp; <font color = green > <B> YOU WIN </B> </font> " );
            return true;
        } else return false;
}
if(captureTarget())
    this.endCondition = true;
    this.win = true;
    
};


this.endRun = function()
{
    if(true){
        if(this.endCondition  && this.win)
            $("#user_span6").html ("&nbsp; <font color = red > <B> GAME OVER </B> </font> ");
        
        else
            $("#user_span6").html ("&nbsp; <font color = red > <B> GAME OVER </B> </font> ");
    }
};


this.getScore = function()
{
 return goodsteps;
};


}

//---- end of World class -------------------------------------------------------