// Cloned by Kavach Dheer on 12 Nov 2022 from World "Assignment - 1 Submission" by Kavach Dheer
// Please leave this clone trail here.
// Cloned by Kavach Dheer on 12 Nov 2022 from World "Complex World" by Starter user
// Please leave this clone trail here.
// ==== Starter World =================================================================================================
// This code is designed for use on the Ancient Brain site.
// This code may be freely copied and edited by anyone on the Ancient Brain site.
// To include a working run of this program on another site, see the "Embed code" links provided on Ancient Brain.
// ====================================================================================================================
// =============================================================================================
// More complex starter World
// 3d-effect Maze World (really a 2-D problem)
// Movement is on a semi-visible grid of squares
//
// This more complex World shows:
// - Skybox
// - Internal maze (randomly drawn each time)
// - Enemy actively chases agent
// - Music/audio
// - 2D world (clone this and set show3d = false)
// - User keyboard control (clone this and comment out Mind actions to see)
// =============================================================================================
// =============================================================================================
// Scoring:
// Bad steps = steps where enemy is within one step of agent.
// Good steps = steps where enemy is further away.
// Score = good steps as percentage of all steps.
//
// There are situations where agent is trapped and cannot move.
// If this happens, you score zero.
// =============================================================================================
// ===================================================================================================================
// === Start of tweaker's box ========================================================================================
// ===================================================================================================================
// The easiest things to modify are in this box.
// You should be able to change things in this box without being a JavaScript programmer.
// Go ahead and change some of these. What's the worst that could happen?
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.
// *
var wallMoveNumber = 10;
var wallMoveTick = 4;
//---- global constants: -------------------------------------------------------
const show3d = true; // Switch between 3d and 2d view (both using Three.js)
// Kavach Dheer
// Changed the Looks of the World
const TEXTURE_WALL = '/uploads/kavach/yellow.jpeg';
const TEXTURE_MAZE = '/uploads/kavach/green.jpg';
const TEXTURE_AGENT = '/uploads/starter/pacman.jpg';
const TEXTURE_ENEMY = '/uploads/kavach/Tom.png';
// 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
// Kavach Dheer
// Added music, so the Worlds becomes fun
const MUSIC_BACK = '/uploads/kavachdheer/music.mp3';
const SOUND_ALARM = '/uploads/starter/air.horn.mp3';
// credits:
// http://www.dl-sounds.com/royalty-free/defense-line/
// http://soundbible.com/1542-Air-Horn.html
// Kavach Dheer
// Changed the size of the Grid
const gridsize = 50; // number of squares along side of world
const NOBOXES = Math.trunc((gridsize * gridsize) / 5 );
// density of maze - number of internal boxes
// (bug) use trunc or can get a non-integer
const squaresize = 100; // size of square in pixels
const MAXPOS = gridsize * squaresize; // length of one side in pixels
const SKYCOLOR = 0xff0000; // 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
//const SKYBOX_ARRAY = ['/uploads/laquica/grass.jpg'];
/*
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"
];
*/
// urban photographic skyboxes, credit:
// http://opengameart.org/content/urban-skyboxes
// Kavach Dheer
// Changed the looks of the World
const SKYBOX_ARRAY = [
"/uploads/starter/sky_neg_x.jpg",
"/uploads/starter/sky_neg_y.jpg",
"/uploads/starter/sky_neg_z.jpg",
"/uploads/starter/sky_pos_z.jpg",
"/uploads/starter/sky_pos_y.jpg",
"/uploads/starter/sky_pos_y.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);
var theagent, theenemy;
var wall_texture, agent_texture, enemy_texture, maze_texture, maze_textre_2;
// Kavach Dheer
// enemy and agent position on squares
var ei, ej, ai, aj;
var openSet = [];
var closeSet = [];
var start, end;
var path = [];
var draw_path = [];
var mazeNew = [];
var Directions = [ACTION_LEFT, ACTION_RIGHT, ACTION_UP, ACTION_DOWN];
var badsteps;
var goodsteps;
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 initScene() {
var i, j, shape, thecube;
for (i = 0; i < gridsize; i++)
GRID[i] = new Array(gridsize);
for (i = 0; i < gridsize; i++)
for (j = 0; j < gridsize; j++)
GRID[i][j] = new Spot(i, j);
for (i = 0; i < gridsize; i++)
for (j = 0; j < gridsize; j++)
GRID[i][j].addNeighbors(GRID);
for (i = 0; i < gridsize; i++)
for (j = 0; j < gridsize; j++)
if ((i == 0) || (i == gridsize - 1) || (j == 0) || (j == gridsize - 1)) {
GRID[i][j].value = GRID_WALL;
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].value = GRID_BLANK;
for (var c = 1; c <= NOBOXES / 2; c++) {
i = AB.randomIntAtoB(1, gridsize - 2); // inner squares are 1 to gridsize-1
j = AB.randomIntAtoB(1, gridsize - 2);
GRID[i][j].value = GRID_MAZE;
shape = new THREE.BoxGeometry(squaresize, BOXHEIGHT, squaresize);
thebox = new THREE.Mesh(shape);
thebox.material = new THREE.MeshBasicMaterial({ map: maze_texture });
mazeNew.push([GRID[i][j], thebox]);
thebox.position.copy(translate(i, j)); // translate my (i,j) grid coordinates to three.js (x,y,z) coordinates
ABWorld.scene.add(thebox);
}
// 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 = i;
ej = j;
openSet.push(GRID[ei][ej]);
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 = i;
aj = j;
closeSet = [];
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
});
}
function drawEnemy() {
theenemy.position.copy(translate(ei, ej));
ABWorld.lookat.copy(theenemy.position);
}
function drawAgent() {
theagent.position.copy(translate(ai, aj));
ABWorld.follow.copy(theagent.position);
}
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].value == GRID_WALL) return true; // fixed objects
if (GRID[i][j].value == GRID_MAZE) 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;
}
// Kavach Dheer
function removeFromArray(array, dummy) {
for (var i = array.length - 1; i >= 0; i--) {
if (array[i] == dummy) {
array.splice(i, 1);
}
}
}
// Kavach Dheer
function heuristic(one, two) {
return (Math.abs(one.i - two.i) + Math.abs(one.j - two.j));
}
function Spot(i, j) {
this.value = 0;
this.i = i;
this.j = j;
this.f = 0;
this.g = 0;
this.h = 0;
this.neighbors = [];
this.previous = undefined;
this.addNeighbors = function (grid) {
var i = this.i;
var j = this.j;
if (i < gridsize - 1)
this.neighbors.push(grid[i + 1][j]);
if (i > 0)
this.neighbors.push(grid[i - 1][j]);
if (j < gridsize - 1)
this.neighbors.push(grid[i][j + 1]);
if (j > 0)
this.neighbors.push(grid[i][j - 1]);
}
this.changeValue = function (v) {
this.value = v;
}
}
// Kavach Dheer
function removeObject(uuid) {
ABWorld.scene.remove(ABWorld.scene.getObjectByProperty('uuid', uuid));
}
// Kavach Dheer
function drawPath(path, sketch_path) {
var shape, thepath;
if (sketch_path.length > 0) {
for (const priorId of sketch_path) {
var tempUUID = priorId;
removeObject(tempUUID);
}
sketch_path.splice(0, sketch_path.length);
}
for (var i = 0; i < path.length; i++) {
shape = new THREE.BoxGeometry(squaresize, .1, squaresize)
thepath = new THREE.Mesh(shape);
thepath.material = new THREE.MeshBasicMaterial({ color: "white" });
thepath.position.copy(translate(path[i].i, path[i].j)); // translate my (i,j) grid coordinates to three.js (x,y,z) coordinates
sketch_path.push(thepath.uuid);
ABWorld.scene.add(thepath);
}
};
// Kavach Dheer
function movingMaze() {
var wall_i, wall_j, direction, random_Item;
for (var x = 0; x < wallMoveNumber; x++) {
random_Item = mazeNew[Math.floor(Math.random() * mazeNew.length)];
var i = random_Item[0].i;
var j = random_Item[0].j;
wall_i = random_Item[0].i;
wall_j = random_Item[0].j;
mazeNew.splice(mazeNew.indexOf(random_Item), 1);
direction = Directions[Math.floor(Math.random() * Directions.length)];
if (direction == ACTION_LEFT)
wall_i--;
else if (direction == ACTION_RIGHT)
wall_i++;
else if (direction == ACTION_UP)
wall_j++;
else if (direction == ACTION_DOWN)
wall_j--;
if (!occupied(wall_i, wall_j)) {
GRID[i][j].changeValue(GRID_BLANK);
random_Item[0].value = GRID_BLANK;
random_Item[0].i = wall_i;
random_Item[0].j = wall_j;
random_Item[0].value = GRID_MAZE;
GRID[wall_i][wall_j].value = GRID_MAZE;
random_Item[1].position.copy(translate(wall_i, wall_j));
}
mazeNew.push(random_Item);
}
}
function moveLogicalEnemy() {
end = GRID[ai][aj];
start = GRID[ei][ej];
if (closeSet.length > 0) {
closeSet.splice(0, closeSet.length);
}
if (openSet.length > 1) {
openSet.splice(0, openSet.length);
openSet.push(start);
}
if (path.length > 0) {
path.splice(0, path.length);
}
var finished = false;
while (openSet.length > 0) {
var leastindex = 0;
for (var i = 0; i < openSet.length; i++) {
if (openSet[i].f < openSet[leastindex].f) {
leastindex = i;
}
}
var current = openSet[leastindex];
if (current === end) {
var temp = current;
while (temp.previous != start) {
temp = temp.previous;
path.push(temp)
}
break;
}
removeFromArray(openSet, current);
closeSet.push(current);
var neighbors = current.neighbors;
for (var i = 0; i < neighbors.length; i++) {
var neighbor = neighbors[i];
if (!closeSet.includes(neighbor) && neighbor.value === 0) {
var tempG = current.g + heuristic(neighbor, current);
var newPath = false;
if (openSet.includes(neighbor)) {
if (tempG < neighbor.g) {
neighbor.g = tempG;
newPath = true;
}
}
else {
neighbor.g = tempG;
newPath = true;
openSet.push(neighbor);
}
if (newPath) {
neighbor.h = heuristic(neighbor, end);
neighbor.f = neighbor.g + neighbor.h;
neighbor.previous = current;
}
}
}
}
var i = temp.i;
var j = temp.j;
if (!occupied(i, j)) // if no obstacle then move, else just miss a turn
{
ei = i;
ej = j;
}
}
//Move the Agent
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 (!ourKeys(event))
return true;
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 + " x = (" + x.toString() + ") 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(" y = (" + y.toString() + ") <br>" +
" Bad steps: " + badsteps +
" Good steps: " + goodsteps +
" Score: " + score.toFixed(2) + "% ", 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();
if (path.length > 0) {
drawPath(path, draw_path);
}
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();
}
if ((AB.step % wallMoveTick) === 0)
movingMaze();
};
AB.world.endRun = function () {
musicPause();
if (AB.abortRun) AB.msg(" <br> <font color=purple> <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();
}