Code viewer [Ancient Brain]

Code viewer for World: aa

// Cloned by mick on 10 Nov 2023 from World "Complex World (clone by Pranay Manjunath)" by Pranay Manjunath 
// Please leave this clone trail here.



AB.clockTick       = 100;    

	// Speed of run: Step every n milliseconds. Default 100.
	
	AB.maxSteps        = 1000;    

	// Length of run: Maximum length of run in steps. Default 1000.

	AB.screenshotStep  = 50;   
	
	// Take screenshot on this step. (All resources should have finished loading.) Default 50.



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

	const show3d = true;						// Switch between 3d and 2d view (both using Three.js) 

//AI Practical Start - Changed the images to make a unique world//
/*const TEXTURE_WALL 	= '/uploads/pranay85/1636991319.png' ;
const TEXTURE_MAZE 	= '/uploads/pranay85/1636989691.png' ;
const TEXTURE_AGENT 	= '/uploads/pranay85/1636822877.png' ;
const TEXTURE_ENEMY 	= '/uploads/pranay85/1636822913.png' ;
*/


const TEXTURE_WALL 	= '/uploads/pranay85/1638622761.png' ;
const TEXTURE_MAZE 	= '/uploads/pranay85/1638623030.png' ;
const TEXTURE_AGENT 	= '/uploads/pranay85/1638623103.png' ;
const TEXTURE_ENEMY 	= '/uploads/pranay85/1638623071.png' ;

//AI Practical End
// credits:
// http://commons.wikimedia.org/wiki/File:Old_door_handles.jpg
// https://commons.wikimedia.org/wiki/Category:Pac-Man_icons
// https://commons.wikimedia.org/wiki/Category:Skull_and_crossbone_icons
// http://en.wikipedia.org/wiki/File:Inscription_displaying_apices_(from_the_shrine_of_the_Augustales_at_Herculaneum).jpg

//AI Practical Start - Changed the backgroud //
const MUSIC_BACK  = '/uploads/pranay85/BatmanMusic.mp4' ;
const SOUND_ALARM = '/uploads/starter/air.horn.mp3' ;
//AI Practical End

// credits:
// http://www.dl-sounds.com/royalty-free/defense-line/
// http://soundbible.com/1542-Air-Horn.html 


//AI Practical Start
const gridsize = 12;    //Changed gridsize to 50 - number of squares along side of world
//AI Practical End

//AI Practical Start - Changed the number of boxes
// density of maze - number of internal boxes
		
		const NOBOXES = 0;
		//Math.trunc ( (gridsize * gridsize) / 3 );

//AI Practical End

const squaresize = 100;					// size of square in pixels

const MAXPOS = gridsize * squaresize;		// length of one side in pixels 

const SKYCOLOR 	= 0xddffdd;				// a number, not a string 


const startRadiusConst	 	= MAXPOS * 0.8 ;		// distance from centre to start the camera at
const maxRadiusConst 		= MAXPOS * 10  ;		// maximum distance from camera we will render things  



//--- change ABWorld defaults: -------------------------------

ABHandler.MAXCAMERAPOS 	= maxRadiusConst ;

ABHandler.GROUNDZERO		= true;						// "ground" exists at altitude zero



//--- skybox: -------------------------------
// skybox is a collection of 6 files 
// x,y,z positive and negative faces have to be in certain order in the array 
// https://threejs.org/docs/#api/en/loaders/CubeTextureLoader 

// mountain skybox, credit:
// http://stemkoski.github.io/Three.js/Skybox.html
//AI Practical Start - Change background
/*
 const SKYBOX_ARRAY = [										 
                "/uploads/starter/dawnmountain-xpos.png",
                "/uploads/starter/dawnmountain-xneg.png",
                "/uploads/starter/dawnmountain-ypos.png",
                "/uploads/starter/dawnmountain-yneg.png",
                "/uploads/starter/dawnmountain-zpos.png",
                "/uploads/starter/dawnmountain-zneg.png"
                ];

                */
// space skybox, credit:
// http://en.spaceengine.org/forum/21-514-1
// x,y,z labelled differently


const SKYBOX_ARRAY = [										 
"/uploads/starter/sky_pos_z.jpg",
"/uploads/starter/sky_neg_z.jpg",
"/uploads/starter/sky_pos_y.jpg",
"/uploads/starter/sky_neg_y.jpg",
"/uploads/starter/sky_pos_x.jpg",
"/uploads/starter/sky_neg_x.jpg"
]



//AI Practical End
// urban photographic skyboxes, credit:
// http://opengameart.org/content/urban-skyboxes


 /*const SKYBOX_ARRAY = [										 
                "/uploads/starter/posx.jpg",
                "/uploads/starter/negx.jpg",
                "/uploads/starter/posy.jpg",
                "/uploads/starter/negy.jpg",
                "/uploads/starter/posz.jpg",
                "/uploads/starter/negz.jpg"
                ];
                */



// ===================================================================================================================
// === End of tweaker's box ==========================================================================================
// ===================================================================================================================


// You will need to be some sort of JavaScript programmer to change things below the tweaker's box.









//--- 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;

// in initial view, (smaller-larger) on i axis is aligned with (left-right)
// in initial view, (smaller-larger) on j axis is aligned with (away from you - towards you)


// contents of a grid square

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





var BOXHEIGHT;		// 3d or 2d box height 

var GRID 	= new Array(gridsize);			// can query GRID about whether squares are occupied, will in fact be initialised as a 2D array   

var theagent, theenemy;

var wall_texture, agent_texture, enemy_texture, maze_texture; 


// enemy and agent position on squares
var ei, ej, ai, aj;

var badsteps;
var goodsteps;

//AI Practical Start

// Open and closed set
var openArray = [];
var closedArray = [];

// Start and end
var start;
var end;

var pathcolor = 'green';
//AI Practical End



function loadResources()		// asynchronous file loads - call initScene() when all finished 
{
	var loader1 = new THREE.TextureLoader();
	var loader2 = new THREE.TextureLoader();
	var loader3 = new THREE.TextureLoader();
	var loader4 = new THREE.TextureLoader();
	
	loader1.load ( TEXTURE_WALL, function ( thetexture )  		
	{
		thetexture.minFilter  = THREE.LinearFilter;
		wall_texture = thetexture;
		if ( asynchFinished() )	initScene();		// if all file loads have returned   
	});
	
	loader2.load ( TEXTURE_AGENT, function ( thetexture )  	 
	{
		thetexture.minFilter  = THREE.LinearFilter;
		agent_texture = thetexture;
		if ( asynchFinished() )	initScene();		 
	});	
	
	loader3.load ( TEXTURE_ENEMY, function ( thetexture )  
	{
		thetexture.minFilter  = THREE.LinearFilter;
		enemy_texture = thetexture;
		if ( asynchFinished() )	initScene();		 
	});
	
	loader4.load ( TEXTURE_MAZE, function ( thetexture )  
	{
		thetexture.minFilter  = THREE.LinearFilter;
		maze_texture = thetexture;
		if ( asynchFinished() )	initScene();		 
	});
	
}


function asynchFinished()		 // all file loads returned 
{
	if ( wall_texture && agent_texture && enemy_texture && maze_texture )   return true; 
	else return false;
}	




//--- grid system -------------------------------------------------------------------------------
// my numbering is 0 to gridsize-1


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 ( GRID[i][j] == GRID_WALL ) return true;		// fixed objects	 
 if ( GRID[i][j] == GRID_MAZE ) return true;*/

 if(GRID[i][j].wall == true) return true;	 
 
 return false;
}


// translate my (i,j) grid coordinates to three.js (x,y,z) coordinates
// logically, coordinates are: y=0, x and z all positive (no negative)    
// logically my dimensions are all positive 0 to MAXPOS
// to centre everything on origin, subtract (MAXPOS/2) from all dimensions 

function translate ( i, j )			
{
	var v = new THREE.Vector3();
	
	v.y = 0;	
	v.x = ( i * squaresize ) - ( MAXPOS/2 );   		 
	v.z = ( j * squaresize ) - ( MAXPOS/2 );   	
	
	return v;
}




function initScene()		// all file loads have returned 
{
	var i,j, shape, thecube;
	
	// set up GRID as 2D array
	
	for ( i = 0; i < gridsize ; i++ ) 
		GRID[i] = new Array(gridsize);	


	// set up walls
	
	for ( i = 0; i < gridsize ; i++ ) 
		for ( j = 0; j < gridsize ; j++ ) 
			if ( ( i==0 ) || ( i==gridsize-1 ) || ( j==0 ) || ( j==gridsize-1 ) )
			{
				//AI Practical Start
				//GRID[i][j] = GRID_WALL;		 
				GRID[i][j] = new Loc(i, j, true); // Builds the wall in i,j position
				//AI Practical End
				shape    = new THREE.BoxGeometry ( squaresize, BOXHEIGHT, squaresize );			 
				thecube  = new THREE.Mesh( shape );
				thecube.material = new THREE.MeshBasicMaterial( { map: wall_texture } );
				
			thecube.position.copy ( translate(i,j) ); 		  	// translate my (i,j) grid coordinates to three.js (x,y,z) coordinates 
			ABWorld.scene.add(thecube);
		}
		else 
			//GRID[i][j] = GRID_BLANK;
			GRID[i][j] = new Loc(i, j, false); // Leaves the i,j spot blank
		
   // set up maze 
   
   for ( var c=1 ; c <= NOBOXES ; c++ )
   {
		i = AB.randomIntAtoB(1,gridsize-2);		// inner squares are 1 to gridsize-2
		j = AB.randomIntAtoB(1,gridsize-2);
		
		//AI Practical Start - Checks for the wall
		//GRID[i][j] = GRID_MAZE ;
		GRID[i][j].wall = true;
		//AI Practical End

		shape    = new THREE.BoxGeometry ( squaresize, BOXHEIGHT, squaresize );			 
		thecube  = new THREE.Mesh( shape );
		thecube.material = new THREE.MeshBasicMaterial( { map: maze_texture } );		  

		thecube.position.copy ( translate(i,j) ); 		  	// translate my (i,j) grid coordinates to three.js (x,y,z) coordinates 
		ABWorld.scene.add(thecube);		
	}
	
	
	// set up enemy 
	// start in random location
	
	do
	{
		i = AB.randomIntAtoB(1,gridsize-2);
		j = AB.randomIntAtoB(1,gridsize-2);
	}
	 while ( occupied(i,j) );  	  // search for empty square 

	 ei = 2;
	 ej = 2;
	 
	 shape    = new THREE.BoxGeometry ( squaresize, BOXHEIGHT, squaresize );			 
	 theenemy = new THREE.Mesh( shape );
	 theenemy.material =  new THREE.MeshBasicMaterial( { map: enemy_texture } );
	 ABWorld.scene.add(theenemy);
	 drawEnemy();		  

	 
	 
	// set up agent 
	// start in random location
	
	do
	{
		i = AB.randomIntAtoB(1,gridsize-2);
		j = AB.randomIntAtoB(1,gridsize-2);
	}
	 while ( occupied(i,j) );  	  // search for empty square 

	 ai = 8;
	 aj = 8;
	 
	 shape    = new THREE.BoxGeometry ( squaresize, BOXHEIGHT, squaresize );			 
	 theagent = new THREE.Mesh( shape );
	 theagent.material =  new THREE.MeshBasicMaterial( { map: agent_texture } );
	 ABWorld.scene.add(theagent);
	 drawAgent(); 


  // finally skybox 
  // setting up skybox is simple 
  // just pass it array of 6 URLs and it does the asych load 
  
  ABWorld.scene.background = new THREE.CubeTextureLoader().load ( SKYBOX_ARRAY, 	function() 
  { 
  	ABWorld.render(); 
  	
  	AB.removeLoading();
  	
		AB.runReady = true; 		// start the run loop
	});

	//AI Practical Start
	  // All the neighbours
	  for (var i = 0; i < gridsize; i++) 
	  	for (var j = 0; j < gridsize; j++) 
	  		GRID[i][j].addneighbours();


	  // Start and end
	  start     = GRID[ei][ej];
	  end       = GRID[ai][aj];
	  start.wall    = false;
	  end.wall      = false;

	  // openArray starts with beginning only
	  openArray.push(start);
	 // console.log("initScene openArray", openArray);
	//AI Practical End	
}





// --- draw moving objects -----------------------------------


function drawEnemy()		// given ei, ej, draw it 
{
	theenemy.position.copy ( translate(ei,ej) ); 		  	// translate my (i,j) grid coordinates to three.js (x,y,z) coordinates 

	ABWorld.lookat.copy ( theenemy.position );	 		// if camera moving, look back at where the enemy is  
}


function drawAgent()		// given ai, aj, draw it 
{
	theagent.position.copy ( translate(ai,aj) ); 		  	// translate my (i,j) grid coordinates to three.js (x,y,z) coordinates 

	ABWorld.follow.copy ( theagent.position );			// follow vector = agent position (for camera following agent)
}



// --- take actions -----------------------------------

//AI Practical Start

var old_path = []

class Loc{
	constructor(i, j, wall){
		this.i = i;
		this.j = j;
		this.f = 0;
		this.g = 0;
		this.h = 0;
		this.neighbours = [];
		this.previous = undefined;
		this.wall = wall;
	}

	checkWall(){
		return this.wall;
	}

  // Used to show the pathcolor while chasing the agent
  display(fillColor) 
  {
  	this.shape    = new THREE.BoxGeometry ( squaresize, 1, squaresize );			 
  	this.pathBox = new THREE.Mesh( this.shape );
  	this.pathBox.position.copy(translate(this.i, this.j));
  	this.pathBox.material =  new THREE.MeshBasicMaterial();
  	this.pathBox.material.color.setColorName(fillColor);
  	ABWorld.scene.add(this.pathBox);
  };

  removePath()
  {
  	ABWorld.scene.remove(this.pathBox);
  }
  

  // Figure out the neighbours of the agent
  addneighbours()
  {
  	var i = this.i;
  	var j = this.j;
  	
  		if (i < gridsize - 1 && !GRID[i + 1][j].wall) this.neighbours.push(GRID[i + 1][j]);
  		if (i > 0 && !GRID[i - 1][j].wall) this.neighbours.push(GRID[i - 1][j]);
  		if (j < gridsize - 1 && !GRID[i][j + 1].wall)  this.neighbours.push(GRID[i][j + 1]);
  		if (j > 0 && !GRID[i][j - 1].wall) this.neighbours.push(GRID[i][j - 1]);
  };
}

function removeFromArray(arr, elt) 
{
  for (var i = arr.length - 1; i >= 0; i--) 
  	if (arr[i] == elt) 
  		arr.splice(i, 1);
  }

function heuristic(a, b) 
{
	return ( Math.abs(a.i - b.i) + Math.abs(a.j - b.j) );
}

function resetFunctions()
{
for (var i = 0; i < gridsize; i++) 
	for (var j = 0; j < gridsize; j++) 
		if(!GRID[i][j].wall){
  		GRID[i][j].f = 0;
  		GRID[i][j].g = 0;
  		GRID[i][j].h = 0;
  		GRID[i][j].previous = undefined;
		}
}
//AI Practical End
var statesSearchedCount = 0;
function moveLogicalEnemy()
{ 
// move towards agent 

//AI Practical Start - Implementation of A* algorithm/

let start = GRID[ei][ej];
let end = GRID[ai][aj];
resetFunctions();

for (var i = 0; i < old_path.length; i++){
	old_path[i].removePath(pathcolor);
	//console.log("path[i] remove colour", old_path[i]);
} 

openArray = [start]
closedArray = []
//console.log("openArray with only start", openArray);
var current = null; 
let path = [];

while(openArray.length > 0){
	//console.log("openArray", openArray);
	if (openArray.length > 0) 
	{

    // Best next option
    var win = 0;
    for (var i = 0; i < openArray.length; i++) 
    	if (openArray[i].f < openArray[win].f) 
    		win = i;
    	
    	var current = openArray[win];
    	

    // Did I finish?
    if (current === end) 
    {
    	//console.log("success - found path");
    	break;
    }

    // Best option moves from openArray to closedArray
    removeFromArray(openArray, current);
    closedArray.push(current);

    // Check all the neighbours
    var neighbours = current.neighbours;
    
    //--- start of for loop -----------
    for (var i = 0; i < neighbours.length; i++) 
    {
    	var neighbor = neighbours[i];

      // Valid next spot?
      if (!closedArray.includes(neighbor) && !neighbor.checkWall()) 
      {
      	var tempG = current.g + heuristic(neighbor, current);

        // Is this a better path than before?
        var newPath = false;
        if (openArray.includes(neighbor)) 
        {
        	if (tempG < neighbor.g) 
        	{
        		neighbor.g = tempG;
        		newPath = true;
        	}
        }
        else 
        {
        	neighbor.g = tempG;
        	newPath = true;
        	openArray.push(neighbor);
        }

        // Yes, it's a better path
        if (newPath) 
        {
        	neighbor.h = heuristic(neighbor, end);
        	neighbor.f = neighbor.g + neighbor.h;
        	neighbor.previous = current;
        }
      }
    }
    //--- end of for loop -----------
    
  }
  // --- end still searching -----------------------------
  else 
  {
  	//console.log('fail - no path exists');
  	return;
  }
}
statesSearchedCount=openArray.length+closedArray.length;
console.log(statesSearchedCount);
var temp = current;
path.push(temp);
while (temp && temp.previous) 
{
	path.push(temp.previous);
	temp = temp.previous;
}

old_path = path

for (var i = 0; i < path.length; i++){
	path[i].display(pathcolor);
//	console.log("path[i] colour", path[i]);
} 

//console.log("current location", ei, " ", ej);
//console.log("path", path);

if(path.length > 2)
{
	//console.log("path[path.length - 2].i", path[path.length - 2].i);
	//console.log("path[path.length - 2].j", path[path.length - 2].j);
	i = path[path.length - 2].i;
	j = path[path.length - 2].j;
}
else
{
	i = ei;
	j = ej;
}
 
 if ( ! occupied(i,j) )  	// if no obstacle then move, else just miss a turn
 {
 	//console.log("!occupied");
 	ei = i;
 	ej = j;
 }
}
// AI Practical End

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--;

	if ( ! occupied(i,j) ) 
	{
		ai = i;
		aj = j;
	}
}




// --- key handling --------------------------------------------------------------------------------------
// This is hard to see while the Mind is also moving the agent:
// AB.mind.getAction() and AB.world.takeAction() are constantly running in a loop at the same time 
// have to turn off Mind actions to really see user key control 

// we will handle these keys: 

var OURKEYS = [ 37, 38, 39, 40 ];

function ourKeys ( event ) { return ( OURKEYS.includes ( event.keyCode ) ); }


function keyHandler ( event )		
{
	if ( ! AB.runReady ) return true; 		// not ready yet 

   // if not one of our special keys, send it to default key handling:
   
   if ( ! ourKeys ( event ) ) return true;
   
	// else handle key and prevent default handling:
	
	if ( event.keyCode == 37 )   moveLogicalAgent ( ACTION_LEFT 	);   
	if ( event.keyCode == 38 )   moveLogicalAgent ( ACTION_DOWN  	); 	 
	if ( event.keyCode == 39 )   moveLogicalAgent ( ACTION_RIGHT 	); 	 
	if ( event.keyCode == 40 )   moveLogicalAgent ( ACTION_UP		);   
	
	// when the World is embedded in an iframe in a page, we want arrow key events handled by World and not passed up to parent 

	event.stopPropagation(); event.preventDefault(); return false;
}





// --- 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 agentBlocked()			// agent is blocked on all sides, run over
{
	return ( 	occupied (ai-1,aj) 		&& 
		occupied (ai+1,aj)		&&
		occupied (  ai,aj+1)		&&
		occupied (  ai,aj-1) 	);		
} 


function updateStatusBefore(a)
// this is called before anyone has moved on this step, agent has just proposed an action
// update status to show old state and proposed move 
{
	var x 		= AB.world.getState();
	AB.msg ( " Step: " + AB.step + " &nbsp; x = (" + x.toString() + ") &nbsp; a = (" + a + ") " ); 
}


function   updateStatusAfter()		// agent and enemy have moved, can calculate score
{
 // new state after both have moved
 
 var y 		= AB.world.getState();
 var score = ( goodsteps / AB.step ) * 100; 

 AB.msg ( " &nbsp; y = (" + y.toString() + ") <br>" +
 	" Bad steps: " + badsteps + 
 	" &nbsp; Good steps: " + goodsteps + 
 	" &nbsp; Score: " + score.toFixed(2) + "% "+
        " &nbsp; States Searched: " + statesSearchedCount, 2
    );
}





AB.world.newRun = function() 
{
	AB.loadingScreen();

	AB.runReady = false;  

	badsteps = 0;	
	goodsteps = 0;

	
	if ( show3d )
	{
		BOXHEIGHT = squaresize;
		ABWorld.init3d ( startRadiusConst, maxRadiusConst, SKYCOLOR  ); 	
	}	     
	else
	{
		BOXHEIGHT = 1;
		ABWorld.init2d ( startRadiusConst, maxRadiusConst, SKYCOLOR  ); 		     
	}
	
	
	loadResources();		// aynch file loads		
							// calls initScene() when it returns 

							document.onkeydown = keyHandler;	
							
						};



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



						AB.world.takeAction = function ( a )
						{
  updateStatusBefore(a);			// show status line before moves 

  moveLogicalAgent(a);

  if ( ( AB.step % 2 ) == 0 )		// slow the enemy down to every nth step
  	moveLogicalEnemy();


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

  drawAgent();
  drawEnemy();
   updateStatusAfter();			// show status line after moves  


  if ( agentBlocked() )			// if agent blocked in, run over 
  {
  	AB.abortRun = true;
	goodsteps = 0;			// you score zero as far as database is concerned 			 
	musicPause();
	soundAlarm();
}
statesSearchedCount = 0;
};



AB.world.endRun = function()
{
	musicPause(); 
	if ( AB.abortRun ) AB.msg ( " <br> <font color=red> <B> Agent trapped. Final score zero. </B> </font>   ", 3  );
	else    				AB.msg ( " <br> <font color=green> <B> Run over. </B> </font>   ", 3  );
};


AB.world.getScore = function()
{
    // only called at end - do not use AB.step because it may have just incremented past AB.maxSteps
    
    var s = ( goodsteps / AB.maxSteps ) * 100;   // float like 93.4372778 
    var x = Math.round (s * 100);                // 9344
    return ( x / 100 );                          // 93.44
  };







// --- music and sound effects ----------------------------------------

var backmusic = AB.backgroundMusic ( MUSIC_BACK );

function musicPlay()   { backmusic.play();  }
function musicPause()  { backmusic.pause(); }


function soundAlarm()
{
	var alarm = new Audio ( SOUND_ALARM );
	alarm.play();							// play once, no loop 
}