const MAXPOS 		= 3500;			// length of one side of the arena 
const startRadiusConst	 	= MAXPOS ;			// distance from centre to start the camera at
const maxRadiusConst 		= MAXPOS * 10 ;		// maximum distance from camera we will render things 

const SKYCOLOR 		= 0xffffcc;
const LIGHTCOLOR 	= 0xffffff ;

// the object is a cube (each dimension equal): 
  
var shape       = new THREE.BoxGeometry ( objectsize, objectsize, objectsize );
var material    = new THREE.MeshBasicMaterial ( { color: boxcolor.toLowerCase() } );
var theobject   = new THREE.Mesh ( shape, material );
	
AB.world.newRun = function() {
    //  Camera Settings 
    ABWorld.drawCameraControls = false;
    ABWorld.cameraMove();
   
	AB.loadingScreen();
	AB.runReady = false;  
	ABWorld.init3d ( startRadiusConst, maxRadiusConst, SKYCOLOR  );

};


AB.world.nextStep = function() {
	// Code for Three.js re-drawing of objects.  		
};


AB.world.endRun = function() {
};

function loadResources() {		// asynchronous file loads - call initScene() when all finished 

    // load skeleton - OBJ that we will paint with a texture 
	
	var loader = new THREE.OBJLoader ( new THREE.LoadingManager() );
	
	loader.load ( OBJ_SKELETON, function ( object )
	{
		theenemy = object;						// canonical enemy object - may be copied multiple times 
		if ( asynchFinished() )	initScene();		 
	});


    // load Peter Parker model - OBJ plus MTL (plus TGA files) 
    
    // old code:
    //	THREE.Loader.Handlers.add ( /.tga$/i, new THREE.TGALoader() );
    THREE.DefaultLoadingManager.addHandler ( /\.tga$/i, new THREE.TGALoader() );


	var m = new THREE.MTLLoader();
	m.setResourcePath ( OBJPATH );
	m.setPath         ( OBJPATH );
	
	m.load ( MTLNAME, function ( materials ) 
	{
		materials.preload();
		var o = new THREE.OBJLoader();
		o.setMaterials ( materials );
		o.setPath ( OBJPATH );
		
		o.load ( OBJNAME, function ( object ) 
		{
			theagent = object;
// 			if ( asynchFinished() )	initScene();
            initScene();

		});
	});
	
	
 // load textures 
	
	var loader2 = new THREE.TextureLoader();

	loader2.load ( TEXTURE_SKELETON, function ( thetexture )  
	{
		thetexture.minFilter  = THREE.LinearFilter;
		skeleton_texture = thetexture;
// 		if ( asynchFinished() )	initScene();	
        initScene();
	});

}

	
function initScene()		// all file loads have returned 
{
	
 // add agent model 	
 // start at center
 
 	theagent.position.y = 0;
	theagent.position.x = 0;
	theagent.position.z = 0;
	
	theagent.scale.multiplyScalar ( SCALE_HERO );    	  	// scale it 
	ABWorld.scene.add( theagent ); 

 // set up lookat and follow in direction agent is pointing in 
	
	setLookatFollow();	 
	
	

 // add enemies
 // first paint and size the canonical enemy object 
 
	theenemy.traverse ( function ( child ) 
	{
		if ( child instanceof THREE.Mesh ) 
			child.material.map = skeleton_texture ;
	});
		
	theenemy.scale.multiplyScalar ( SCALE_SKELETON );    	// scale it   

	
 // add perhaps multiple enemy models, starting near outside of arena
 
 for ( var i = 0; i < NO_SKELETONS ; i++ ) 
 {
    var object = theenemy.clone();         // copy the object multiple times 

	object.position.y = 0;
	object.position.x = AB.randomPick (		AB.randomIntAtoB ( -MAXPOS/2, -MAXPOS/3 ), 		AB.randomIntAtoB ( MAXPOS/3, MAXPOS/2 ) 		);
	object.position.z = AB.randomPick (		AB.randomIntAtoB ( -MAXPOS/2, -MAXPOS/3 ), 		AB.randomIntAtoB ( MAXPOS/3, MAXPOS/2 ) 		);
 
	ABWorld.scene.add( object ); 
	    
	// save in array for later
    THESKELETONS[i] = object;
 }
 
		
    // finally skybox 
 
  	 ABWorld.scene.background = new THREE.CubeTextureLoader().load ( SKYBOX_ARRAY,	function() 
	 { 
		ABWorld.render(); 
		AB.removeLoading();
		AB.runReady = true; 		
	 });

}