// Cloned by Adesh on 1 Nov 2021 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.
//---- global constants: -------------------------------------------------------
const show3d = true; // Switch between 3d and 2d view (both using Three.js)
const TEXTURE_WALL = '/uploads/adeshs/exterior.png' ;
const TEXTURE_MAZE = '/uploads/adeshs/blocks.jpg' ;
const TEXTURE_AGENT = '/uploads/adeshs/chicken-fig.png' ;
const TEXTURE_ENEMY = '/uploads/adeshs/angryface.png' ;
// credits:
// https://www.nicepng.com/png/full/252-2528226_file-u-f-svg-wikimedia-commons-open-chicken.png
// https://vecta.io/symbols/187/smileys-emotion-face-negative/0/angry-face-with-horns
// https://www.solidbackgrounds.com/images/1024x768/1024x768-gray-solid-color-background.jpg
// https://w7.pngwing.com/pngs/951/239/png-transparent-stone-wall-brick-brick-texture-free-s-miscellaneous-building-material.png
const MUSIC_BACK = '/uploads/adeshs/background-music.mp3' ;
const SOUND_ALARM = '/uploads/adeshs/game-over.mp3' ;
// credits:
// https://www.fiftysounds.com/royalty-free-music/game-defeat.html
// https://orangefreesounds.com/electronic-house-background-music/
const gridsize = 50; // number of squares along side of world
const NOBOXES = Math.trunc ( (gridsize * gridsize) / 3 );
// 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 = 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
// 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
// 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;
var pathToAgent = []; //variable to keep track of the path to the agent
// enemy and agent position on squares
var ei, ej, ai, aj;
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 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;
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;
}
//My code changes BEGINS
function heuristic(e, t) {
return ( Math.abs(e.i - t.i) + Math.abs(e.j - t.j) )
}
function Spot(e, a) {
// Location
this.i = e,
this.j = a,
// f, g, and h values for A*
this.f = 0,
this.g = 0,
this.h = 0,
// Neighbors
this.neighbors = [],
// Where did I come from?
this.previous = void 0,
// Am I an wall?
this.wall = GRID[e][a] !== GRID_BLANK,
// Figure out who my neighbors are
this.addNeighbors = function (e) {
var a = this.i,
t = this.j;
a < gridsize - 1 && this.neighbors.push(e[a + 1][t]),
t < gridsize - 1 && this.neighbors.push(e[a][t + 1]),
a > 0 && this.neighbors.push(e[a - 1][t]),
t > 0 && this.neighbors.push(e[a][t - 1]);
};
}
function removeFromArray(array, value) {
for (var i = array.length - 1; i >= 0; i--) {
if (array[i] == value) {
array.splice(i, 1);
}
}
}
function showPathToAgent(c) {
for ( var i = 0; i < c.length - 1; i++) {
shape = new THREE.BoxGeometry(squaresize, .1, squaresize);
highlightedPath = new THREE.Mesh(shape);
highlightedPath.material = new THREE.MeshBasicMaterial({
color : 'green'
});
highlightedPath.position.copy(translate(c[i].i, c[i].j));
ABWorld.scene.add(highlightedPath);
pathToAgent.push(highlightedPath);
}
}
function initScene() {
var e;
var sphere;
var light;
for (var index = 0; index < gridsize; index++) {
GRID[index] = new Array(gridsize);
}
for (index = 0; index < gridsize; index++) {
for (e = 0; e < gridsize; e++) {
if (index == 0 || index == gridsize - 1 || 0 == e || e == gridsize - 1) {
GRID[index][e] = GRID_WALL;
sphere = new THREE.BoxGeometry(squaresize, BOXHEIGHT, squaresize);
(light = new THREE.Mesh(sphere)).material = new THREE.MeshBasicMaterial(
{
map: wall_texture,
}
);
light.position.copy(translate(index, e));
ABWorld.scene.add(light);
} else {
GRID[index][e] = GRID_BLANK;
}
}
}
for (var r = 1; r <= NOBOXES; r++) {
index = AB.randomIntAtoB(1, gridsize - 2);
e = AB.randomIntAtoB(1, gridsize - 2);
GRID[index][e] = GRID_MAZE;
sphere = new THREE.BoxGeometry(squaresize, BOXHEIGHT, squaresize);
(light = new THREE.Mesh(sphere)).material = new THREE.MeshBasicMaterial({
map: maze_texture,
});
light.position.copy(translate(index, e));
ABWorld.scene.add(light);
}
do {
index = AB.randomIntAtoB(1, gridsize - 2);
e = AB.randomIntAtoB(1, gridsize - 2);
} while (occupied(index, e));
ei = index;
ej = e;
sphere = new THREE.BoxGeometry(squaresize, BOXHEIGHT, squaresize);
(theenemy = new THREE.Mesh(sphere)).material = new THREE.MeshBasicMaterial({
map: enemy_texture,
});
ABWorld.scene.add(theenemy);
drawEnemy();
do {
index = AB.randomIntAtoB(1, gridsize - 2);
e = AB.randomIntAtoB(1, gridsize - 2);
} while (occupied(index, e));
ai = index;
aj = e;
sphere = new THREE.BoxGeometry(squaresize, BOXHEIGHT, squaresize);
(theagent = new THREE.Mesh(sphere)).material = new THREE.MeshBasicMaterial({
map: agent_texture,
});
ABWorld.scene.add(theagent);
drawAgent();
ABWorld.scene.background = new THREE.CubeTextureLoader().load(
SKYBOX_ARRAY,
function () {
ABWorld.render();
AB.removeLoading();
AB.runReady = true;
}
);
}
//My code changes ENDS
// --- 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 -----------------------------------
//My code changes BEGINS
function moveLogicalEnemy() {
var open_nodes = new Array(gridsize);
var openList = [];
var closedList = [];
for (var i = 0; i < pathToAgent.length; i++) {
ABWorld.scene.remove(pathToAgent[i]);
}
for (i = 0; i < gridsize; i++) {
open_nodes[i] = new Array(gridsize);
}
for (i = 0; i < gridsize; i++) {
for (var j = 0; j < gridsize; j++) {
open_nodes[i][j] = new Spot(i, j);
}
}
for (i = 0; i < gridsize; i++) {
for (j = 0; j < gridsize; j++) {
open_nodes[i][j].addNeighbors(open_nodes);
}
}
openList.push(open_nodes[ei][ej]);
for (; openList.length > 0; ) {
var lowestF = 0;
for (i = 0; i < openList.length; i++) {
if (openList[i].f < openList[lowestF].f) {
lowestF = i;
}
}
var current = openList[lowestF];
if (current === open_nodes[ai][aj]) {
var res = [];
var next = current;
res.push(next);
for (; next.previous; ) {
res.push(next.previous);
next = next.previous;
}
showPathToAgent(res);
var k = res.length - 2;
if (!occupied(res[k].i, res[k].j)) {
ei = res[k].i;
ej = res[k].j;
}
break;
}
removeFromArray(openList, current);
closedList.push(current);
var neighbors = current.neighbors;
for (i = 0; i < neighbors.length; i++) {
var neighbor = neighbors[i];
if (neighbor[i] === open_nodes[ai][aj]) {
neighbor.previous = current;
break;
}
if (!closedList.includes(neighbor) && !neighbor.wall) {
var ng = current.g + heuristic(neighbor, current);
var p = false;
if (openList.includes(neighbor)) {
if (ng < neighbor.g) {
neighbor.g = ng;
p = true;
}
} else {
neighbor.g = ng;
p = true;
openList.push(neighbor);
}
if (p) {
neighbor.h = heuristic(neighbor, open_nodes[ai][aj]);
neighbor.f = neighbor.g + neighbor.h;
neighbor.previous = current;
}
}
}
}
}
//My code changes ENDS
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 + " 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();
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();
}
};
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
}