### Three.js Scene Initialization and Setup

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/LeaderFollow.html

Initializes the Three.js scene, camera, renderer, and adds essential elements like a floor, orbit controls, and performance stats. It also sets up event listeners for mouse clicks and window resizing.

```javascript
var container;
var camera;
var scene, renderer;
var controls;
var stats;
var entity1;
var boundaries;
var params
var followers;

function onClick(event) {
    if (event.altKey) {
        var mouse3D = new THREE.Vector3(( event.clientX / window.innerWidth ) * 2 - 1, -( event.clientY / window.innerHeight ) * 2 + 1, 0);
        var raycaster = new THREE.Raycaster();
        raycaster.setFromCamera(mouse3D, camera);
        var intersects = raycaster.intersectObjects(scene.children);
        if (intersects.length > 0) {
            entity1.position.set(intersects[0].point.x, intersects[0].point.y, intersects[0].point.z);
        }
    }
}

function init(element) {
    container= document.getElementById(element);
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
    scene = new THREE.Scene();
    renderer = new THREE.WebGLRenderer({ alpha: true });
    renderer.setClearColor( 0x333333, 0);
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.domElement.style.position = 'absolute';
    renderer.domElement.style.top = 0;
    container.appendChild(renderer.domElement);

    camera.position.set(0, 10000, 10000);
    camera.lookAt(new THREE.Vector3(0,0,0));

    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.maxPolarAngle = Math.PI * 0.5;
    controls.minDistance = 100;
    controls.maxDistance = 30000;

    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.left='180px';
    stats.domElement.style.zIndex = 100;
    container.appendChild( stats.domElement );

    // Floor
    var floorGeometry=new THREE.PlaneGeometry(10000,10000, 32 );
    var floorMaterial=new THREE.MeshBasicMaterial({color: 0x666666, transparent: true, opacity: 0.5});
    var floor=new THREE.Mesh( floorGeometry, floorMaterial);
    floor.rotation.x=-Math.PI*.5;
    scene.add(floor);

    // Entity Mesh
    var geometry = new THREE.BoxGeometry( 100, 200, 50 );
    var material1 = new THREE.MeshBasicMaterial( { color: 0xFFFFFF, wireframe: true } );
    var mesh1 = new THREE.Mesh(geometry, material1);
    mesh1.position.setY(100);

    // Entities
    entity1=new SteeringEntity(mesh1);
    entity1.maxSpeed=15;
    entity1.lookAtDirection=true;
    entity1.position.set(Math.random() * (2500 - (-2500)) + (-2500) ,0,Math.random() * (2500 - (-2500)) + (-2500));
    entity1.wanderDistance=10;
    entity1.wanderRadius=5;
    entity1.wanderRange=1;
    scene.add(entity1);

    var material3 = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true } );
    params={maxSpeed:15, maxForce:5, lookAtDirection:true, wanderDistance:10, wanderRadius:5, wanderRange:1, numFollowers:20, distance:400, separationRadius:300, maxSeparation:500, leaderSightRadius:1000, arrivalThreshold:200}
    followers=[]
    for(var i=0;i<params.numFollowers;i++) {
        var mesh=new THREE.Mesh(geometry, material3)
        mesh.position.setY(100)
        var entity=new SteeringEntity(mesh)
        entity.position.set(Math.random() * (2500 - (-2500)) + (-2500) ,0,Math.random() * (2500 - (-2500)) + (-2500));
        entity.maxSpeed=params.maxSpeed;
        entity.maxForce=params.maxForce;
        followers.push(entity)
        scene.add(entity);
    }

    //Plane boundaries (do not cross)
    boundaries=new THREE.Box3(new THREE.Vector3(-5000,0, -5000), new THREE.Vector3(5000, 0, 5000));

    //Gui
    var gui = new dat.GUI();
    var f1 = gui.addFolder('Leader');
    f1.add(entity1, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    f1.add(entity1, 'maxForce', 1, 20).name('Max Force').step(1);
    f1.add(entity1, 'lookAtDirection').name('Look at Direction');
    f1.open()

    var f2 = gui.addFolder('Followers')
    var quantity = f2.add(params, 'numFollowers', 2, 100).name("Num Of Followers").step(1);
    quantity.onFinishChange(function(value) {
        for(var i=0;i<followers.length;i++) {
            scene.remove(followers[i])
            followers[i].mesh.geometry.dispose()
            followers[i].mesh.material.dispose()
        }
        followers=[]
        for(var i=0;i<value;i++) {
            var mesh=new THREE.Mesh(geometry, material3)
            mesh.position.setY(100)
            var entity=new SteeringEntity(mesh)
            entity.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
            followers.push(entity)
            scene.add(entity);
        }
    });
    f2.add(params, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    f2.add(params, 'maxForce', 1, 20).name('Max Force').step(1);
    f2.add(params, 'lookAtDirection').name('Look at Direction');
    f2.add(params, 'distance', 100, 2000).name('Leader Distance').step(1);
    f2.add(params, 'separationRadius', 100, 500).name('Separation Radius').step(1);
    f2.add(params, 'maxSeparation', 100, 1000).name('Max Separation').step(1);
    f2.add(params, 'leaderSightRadius', 100, 5000).name('Sight Radius').step(1);
    f2.add(params, 'arrivalThreshold', 100, 1000).name('Arrival Threshold').step(1);
    f2.open()

    window.addEventListener('resize', onWindowResize, false);
    document.addEventListener( 'mousedown', onClick, true );

    animate();
}

function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
}

function animate() {
    requestAnimationFrame(animate);
    c
```

--------------------------------

### Setup Three.js Scene and Load Models/Animations

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Interpose.html

Initializes the Three.js scene, camera, renderer, lighting, floor, and controls. It then proceeds to load character models and animations sequentially using SEA3D loaders. The loading progress is displayed to the user. Once all assets are loaded, the 'init' function is called to set up the scene.

```javascript
var container;
var camera;
var scene, renderer;
var clock;
var controls;
var stats;
var entity1, entity2, entity3;
var ball;
var boundaries;
var params;
var characters=[
  {index:0, name:"white", url:"models/avatar_white.tjs.sea"},
  {index:1, name:"red", url:"models/avatar_red.tjs.sea"},
  {index:2, name:"black", url:"models/avatar_black.tjs.sea"}
];
var animations=[
  {index:0, name:"idle", url:"models/animations/idle.tjs.sea"},
  {index:1, name:"walk", url:"models/animations/walk.tjs.sea"},
  {index:2, name:"jog", url:"models/animations/jog.tjs.sea"},
  {index:3, name:"run", url:"models/animations/run.tjs.sea"}
];

function loadModels() {
  loadModel(0)
}

function loadModel(index) {
  var loader = new THREE.SEA3D();
  loader.onProgress = function (e) {
    document.getElementById("loading-msg").innerHTML = "Loading model " + parseInt(index + 1) + " of " + characters.length //+ " ( " + parseInt(e.progress * 100) + "% )";
  };
  loader.onError = function (e) {
    index++;
    loadModel(index);
  };
  loader.onComplete = function (e) {
    characters[index].mesh=loader.meshes[0]
    characters[index].mesh.rotateY(Math.PI)
    if (index < characters.length - 1) {
      index++;
      loadModel(index);
    } else {
      loadAnimations()
    }
  }
  loader.load(characters[index].url);
}

function loadAnimation(index) {
  var loader = new THREE.SEA3D();
  loader.onProgress = function (e) {
    document.getElementById("loading-msg").innerHTML = "Loading animation " + parseInt(index + 1) + " of " + animations.length //+ " ( " + parseInt(e.progress * 100) + "% )";
  };
  loader.onError = function (e) {
    index++;
    loadAnimation(index);
  };
  loader.onComplete = function (e) {
    animations[index].data=loader.meshes[0].animations[0]
    if (index < animations.length - 1) {
      index++;
      loadAnimation(index);
    } else {
      var el = document.getElementById("loading-msg")
      el.parentNode.removeChild(el);
      init('container');
    }
  }
  loader.load(animations[index].url);
}

function loadAnimations() {
  loadAnimation(0)
}

function init(element) {
  container = document.getElementById(element);
  camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
  scene = new THREE.Scene();
  renderer = new THREE.WebGLRenderer({alpha: true});
  renderer.setClearColor(0x333333, 0);
  renderer.shadowMap.enabled=true;
  renderer.shadowMap.type = THREE.PCFSoftShadowMap;
  renderer.gammaInput = true;
  renderer.gammaOutput = true;
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.domElement.style.position = 'absolute';
  renderer.domElement.style.top = 0;
  container.appendChild(renderer.domElement);
  camera.position.set(0, 10000, 10000);
  camera.lookAt(new THREE.Vector3(0, 0, 0));
  controls = new THREE.OrbitControls(camera, renderer.domElement);
  //controls.maxPolarAngle = Math.PI * 0.5;
  controls.minDistance = 100;
  controls.maxDistance = 30000;
  stats = new Stats();
  stats.domElement.style.position = 'absolute';
  stats.domElement.style.bottom = '0px';
  stats.domElement.style.left = '180px'
  stats.domElement.style.zIndex = 100;
  container.appendChild(stats.domElement);
  clock = new THREE.Clock();
  //Lights
  var spotLight = new THREE.SpotLight(
    0xffffff,
    5.0
  );
  spotLight.position.set(
    0,
    5000,
    0
  );
  spotLight.castShadow = true;
  spotLight.shadow.mapSize.width = 1024;
  spotLight.shadow.mapSize.height = 1024;
  spotLight.angle = 1;
  spotLight.penumbra = 0.5;
  spotLight.decay = 2;
  spotLight.distance = 10000;
  var ambient = new THREE.AmbientLight(
    0xFFFFFF
  );
  ambient.intensity=0.25
  scene.add( spotLight );
  scene.add( ambient );
  // Floor
  var floorGeometry = new THREE.CubeGeometry(10000, 10000, 1, 32);
  var floorMaterial = new THREE.MeshPhongMaterial({color: 0x4DA6FF});
  var floor = new THREE.Mesh(floorGeometry, floorMaterial);
  floor.receiveShadow=true;
  floor.rotation.x = -Math.PI * .5;
  scene.add(floor);
  //Ball
  var ballGeometry = new THREE.SphereGeometry(30, 32, 32);
  var ballMaterial = new THREE.MeshLambertMaterial({

```

--------------------------------

### Three.js Initialization and Scene Setup

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/Pursue.html

Initializes the Three.js scene, camera, renderer, and orbit controls. It also sets up a floor, a ball that follows the mouse, and three steerable entities. The GUI is configured to control entity properties like maxSpeed and maxForce.

```javascript
var container;
var camera;
var scene, renderer;
var controls;
var stats;
var entity1, entity2, entity3 ;
var ball;
var boundaries;
var params

function init(element) {
    container= document.getElementById(element);
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
    scene = new THREE.Scene();
    renderer = new THREE.WebGLRenderer({ alpha: true });
    renderer.setClearColor( 0x333333, 0);
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.domElement.style.position = 'absolute';
    renderer.domElement.style.top = 0;
    container.appendChild(renderer.domElement);

    camera.position.set(0, 10000, 10000);
    camera.lookAt(new THREE.Vector3(0,0,0));
    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.maxPolarAngle = Math.PI * 0.5;
    controls.minDistance = 100;
    controls.maxDistance = 30000;

    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.left='180px'
    stats.domElement.style.zIndex = 100;
    container.appendChild( stats.domElement );

    // Floor
    var floorGeometry=new THREE.PlaneGeometry(10000,10000, 32 );
    var floorMaterial=new THREE.MeshBasicMaterial({color: 0x666666, transparent: true, opacity: 0.5});
    var floor=new THREE.Mesh( floorGeometry, floorMaterial);
    floor.rotation.x=-Math.PI*.5;
    scene.add(floor);

    //Ball
    var ballGeometry=new THREE.SphereGeometry(50, 32, 32);
    var ballMaterial=new THREE.MeshBasicMaterial({color: 0xBCFF00});
    ball=new THREE.Mesh( ballGeometry, ballMaterial );
    ball.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,50,Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(ball);

    // Entity Mesh
    var geometry = new THREE.BoxGeometry( 100, 200, 50 );
    var material1 = new THREE.MeshBasicMaterial( { color: 0xFFFFFF, wireframe: true } );
    var mesh1 = new THREE.Mesh(geometry, material1);
    mesh1.position.setY(100)
    var material2 = new THREE.MeshBasicMaterial( { color: 0xFF0000, wireframe: true } );
    var mesh2 = new THREE.Mesh(geometry, material2);
    mesh2.position.setY(100)
    var material3 = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true } );
    var mesh3 = new THREE.Mesh(geometry, material3);
    mesh3.position.setY(100)

    // Entities
    // #1
    entity1=new SteeringEntity(mesh1);
    entity1.maxSpeed=15
    entity1.lookAtDirection=true;
    entity1.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(entity1);

    // #2
    entity2=new SteeringEntity(mesh2);
    entity2.maxSpeed=10
    entity2.lookAtDirection=true;
    entity2.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(entity2);

    // #3
    entity3=new SteeringEntity(mesh3);
    entity3.maxSpeed=10
    entity3.lookAtDirection=true;
    entity3.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(entity3);

    //Plane boundaries (do not cross)
    boundaries=new THREE.Box3(new THREE.Vector3(-5000,0, -5000), new THREE.Vector3(5000, 0, 5000));
    params={avoidCollisions:true}

    //Gui
    var gui = new dat.GUI();
    var f1 = gui.addFolder('White Entity');
    f1.add(entity1, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    f1.add(entity1, 'maxForce', 1, 20).name('Max Force').step(1);
    f1.add(entity1, 'lookAtDirection').name('Look At Direction');
    f1.open()
    var f2 = gui.addFolder('Red Entity');
    f2.add(entity2, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    f2.add(entity2, 'maxForce', 1, 20).name('Max Force').step(1);
    f2.add(entity2, 'lookAtDirection').name('Look At Direction');
    f2.open()
    var f3 = gui.addFolder('Black Entity');
    f3.add(entity3, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    f3.add(entity3, 'maxForce', 1, 20).name('Max Force').step(1);
    f3.add(entity3, 'lookAtDirection').name('Look At Direction');
    f3.open()

    window.addEventListener('resize', onWindowResize, false);
    document.addEvent
```

--------------------------------

### Initialize dat.GUI and Event Listeners

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Flocking.html

Initializes the dat.GUI for controlling simulation parameters like number of entities, max speed, max force, sight distance, and close distance. It also sets up event listeners for window resizing and mouse clicks, and starts the animation loop.

```javascript
var gui = new dat.GUI();
var quantity = gui.add(params, 'numEntities', 2, 100).name("Num Of Entities");
quantity.onFinishChange(function(value) {
  for(var i=0;i<entities.length;i++) {
    entities[i].mesh.traverse(function(obj) {
      scene.remove(obj);
      if(obj.geometry) obj.geometry.dispose();
      if(obj.material) obj.material.dispose();
      if(obj.mesh) obj.mesh.dispose();
      if(obj.texture) obj.texture.dispose();
    });
    scene.remove(entities[i])
  }
  entities=[]
  for(var i=0;i<value;i++) {
    var randomChar=Math.floor(Math.random() * ((2-0)+1) + 0);
    var clone = new THREE.SEA3D.SkinnedMesh(characters[randomChar].mesh.geometry, characters[randomChar].mesh.material)
    for(var j=0;j<animations.length;j++) {
      clone.animations.push(animations[j].data);
      clone.clips.push(animations[j].data);
      clone.animationsData[j] = animations[j].data;
    }
    clone.rotateY(Math.PI)
    clone.castShadow=true;
    var entity=new SteeringEntity(clone)
    entity.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
    entities.push(entity);
    scene.add(entity);
  }
});
gui.add(params, 'maxSpeed', 2, 20).name('Max Speed').step(1);
gui.add(params, 'maxForce', 1, 20).name('Max Force').step(1);
gui.add(params, 'inSightDistance', 1000, 10000).name('InSight Distance').step(1);
gui.add(params, 'tooCloseDistance', 100, 1000).name('Too Close Distance').step(1);
window.addEventListener('resize', onWindowResize, false);
document.addEventListener('mousedown', onClick, true);
animate();
```

--------------------------------

### Initialize Three.js Scene and Entities for Flocking

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/Flocking.html

Sets up the Three.js scene, camera, renderer, controls, and stats. It creates a floor, initializes multiple entities with random positions and velocities, defines boundaries, and configures a dat.GUI for parameter control. The `init` function is responsible for this setup and starts the animation loop.

```javascript
var container; var camera; var scene, renderer; var controls; var stats; var entity; var ball; var boundaries; var entities var params function init(element) {
    container= document.getElementById(element);
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
    scene = new THREE.Scene();
    renderer = new THREE.WebGLRenderer({ alpha: true });
    renderer.setClearColor( 0x333333, 0);
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.domElement.style.position = 'absolute';
    renderer.domElement.style.top = 0;
    container.appendChild(renderer.domElement);

    camera.position.set(0, 10000, 10000);
    camera.lookAt(new THREE.Vector3(0,0,0));

    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.maxPolarAngle = Math.PI * 0.5;
    controls.minDistance = 100;
    controls.maxDistance = 30000;

    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.left='180px'
    stats.domElement.style.zIndex = 100;
    container.appendChild( stats.domElement );

    // Floor
    var floorGeometry=new THREE.PlaneGeometry(10000,10000, 32 );
    var floorMaterial=new THREE.MeshBasicMaterial({color: 0x666666, transparent: true, opacity: 0.5});
    var floor=new THREE.Mesh( floorGeometry, floorMaterial );
    floor.rotation.x=-Math.PI*.5;
    scene.add(floor);

    params={inSightDistance:1000, tooCloseDistance:400, maxSpeed:15, maxForce:5, lookAtDirection:true, numEntities:20}

    // Entity Mesh
    var geometry = new THREE.BoxGeometry( 100, 200, 50 );
    var material = new THREE.MeshBasicMaterial( { color: 0xFFFFFF, wireframe: true } );

    // Entities
    entities=[];
    for(var i=0;i<params.numEntities;i++) {
        var mesh=new THREE.Mesh(geometry, material)
        mesh.position.setY(100)
        var entity=new SteeringEntity(mesh)
        entity.position.set(Math.random() * (2500 - (-2500)) + (-2500) ,0,Math.random() * (2500 - (-2500)) + (-2500));
        entity.velocity.set(Math.random()*20-10, 0, Math.random()*20-10 )
        entities.push(entity)
        scene.add(entity);
    }

    //Plane boundaries (do not cross)
    boundaries=new THREE.Box3(new THREE.Vector3(-5000,0, -5000), new THREE.Vector3(5000, 0, 5000));

    //Gui
    var gui = new dat.GUI();
    var quantity = gui.add(params, 'numEntities', 2, 100).name("Num Of Entities").step(1);
    quantity.onFinishChange(function(value) {
        for(var i=0;i<entities.length;i++) {
            scene.remove(entities[i])
            entities[i].mesh.geometry.dispose()
            entities[i].mesh.material.dispose()
        }
        entities=[];
        for(var i=0;i<value;i++) {
            var mesh=new THREE.Mesh(geometry, material)
            mesh.position.setY(200)
            var entity=new SteeringEntity(mesh)
            entity.position.set(Math.random() * (2500 - (-2500)) + (-2500) ,0,Math.random() * (2500 - (-2500)) + (-2500));
            entity.velocity.set(Math.random()*20-10, 0, Math.random()*20-10 )
            entities.push(entity)
            scene.add(entity);
        }
    });
    gui.add(params, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    gui.add(params, 'maxForce', 1, 20).name('Max Force').step(1);
    gui.add(params, 'lookAtDirection').name('Look At Direction');
    gui.add(params, 'inSightDistance', 1000, 10000).name('InSight Distance').step(1);
    gui.add(params, 'tooCloseDistance', 100, 1000).name('Too Close Distance').step(1);

    window.addEventListener('resize', onWindowResize, false);
    animate();
}
```

--------------------------------

### JavaScript Three.js Scene Setup and ARRIVE Behavior

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/Arrive.html

Initializes a Three.js scene, including camera, renderer, controls, and performance stats. It sets up a floor, a target ball, and an entity that employs the ARRIVE steering behavior to move towards the ball's position. The code also includes event listeners for window resizing and mouse clicks to update the target.

```javascript
var container;
var camera;
var scene, renderer;
var controls;
var stats;
var entity;
var ball;
var boundaries;
var params

function onClick(event) {
    if (event.altKey) {
        var mouse3D = new THREE.Vector3(( event.clientX / window.innerWidth ) * 2 - 1, -( event.clientY / window.innerHeight ) * 2 + 1, 0);
        var raycaster = new THREE.Raycaster();
        raycaster.setFromCamera(mouse3D, camera);
        var intersects = raycaster.intersectObjects(scene.children);
        if (intersects.length > 0) {
            ball.position.set(intersects[0].point.x, 50, intersects[0].point.z)
        }
    }
}

function init(element) {
    container = document.getElementById(element);
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
    scene = new THREE.Scene();
    renderer = new THREE.WebGLRenderer({ alpha: true });
    renderer.setClearColor( 0x333333, 0);
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.domElement.style.position = 'absolute';
    renderer.domElement.style.top = 0;
    container.appendChild(renderer.domElement);

    camera.position.set(0, 10000, 10000);
    camera.lookAt(new THREE.Vector3(0, 0, 0));

    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.maxPolarAngle = Math.PI * 0.5;
    controls.minDistance = 100;
    controls.maxDistance = 30000;

    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.left = '180px'
    stats.domElement.style.zIndex = 100;
    container.appendChild(stats.domElement);

    // Floor
    var floorGeometry = new THREE.PlaneGeometry(10000, 10000, 32);
    var floorMaterial = new THREE.MeshBasicMaterial({ color: 0x666666, transparent: true, opacity: 0.5 });
    var floor = new THREE.Mesh(floorGeometry, floorMaterial);
    floor.rotation.x = -Math.PI * .5;
    scene.add(floor);

    // Ball
    var ballGeometry = new THREE.SphereGeometry(50, 32, 32);
    var ballMaterial = new THREE.MeshBasicMaterial({ color: 0xBCFF00 });
    ball = new THREE.Mesh(ballGeometry, ballMaterial);
    ball.position.set(Math.random() * (5000 - (-5000)) + (-5000), 50, Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(ball);

    // Entity Mesh
    var geometry = new THREE.BoxGeometry(100, 200, 50);
    var material = new THREE.MeshBasicMaterial({ color: 0xFFFFFF, wireframe: true });
    var mesh = new THREE.Mesh(geometry, material);
    mesh.position.setY(100)

    // Entity
    entity = new SteeringEntity(mesh);
    entity.position.set(Math.random() * (5000 - (-5000)) + (-5000), 0, Math.random() * (5000 - (-5000)) + (-5000));
    entity.lookAtDirection = true;
    scene.add(entity);

    // Plane boundaries (do not cross)
    boundaries = new THREE.Box3(new THREE.Vector3(-5000, 0, -5000), new THREE.Vector3(5000, 0, 5000));

    params = { helper: false }

    // Gui
    var gui = new dat.GUI();
    gui.add(entity, 'maxSpeed', 1, 50).name('Max Speed').step(1);
    gui.add(entity, 'maxForce', 1, 20).name('Max Force').step(1);
    gui.add(entity, 'lookAtDirection').name('Look At Direction');
    gui.add(entity, 'arrivalThreshold', 100, 2000).name('Threshold').step(1);

    window.addEventListener('resize', onWindowResize, false);
    document.addEventListener('mousedown', onClick, true);

    animate();
}

function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
}

function animate() {
    requestAnimationFrame(animate);

    controls.update();

    entity.arrive(ball.position);

    if (entity.lookAtDirection) entity.lookWhereGoing(true);
    else entity.rotation.set(0, 0, 0)

    entity.bounce(boundaries)
    entity.update();

    renderer.render(scene, camera);
    stats.update();
}
```

--------------------------------

### Initialize and Manage Entities in Wander Example

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Wander.html

This JavaScript code initializes and manages entities for the 'Wander' example. It sets up event listeners for UI changes, window resizing, and mouse clicks. The animation loop updates entity behaviors, physics, and rendering. It also handles the disposal of resources when entities are removed.

```javascript
ui.add(params, 'numEntities', 2, 100).name("Num Of Entities");
quantity.onFinishChange(function(value) {
  for (var i = 0; i < entities.length; i++) {
    entities[i].mesh.traverse(function(obj) {
      scene.remove(obj);
      if (obj.geometry) obj.geometry.dispose();
      if (obj.material) obj.material.dispose();
      if (obj.mesh) obj.mesh.dispose();
      if (obj.texture) obj.texture.dispose();
    });
    scene.remove(entities[i])
  }
  entities = []
  for (var i = 0; i < value; i++) {
    var randomChar = Math.floor(Math.random() * ((2 - 0) + 1) + 0);
    var clone = new THREE.SEA3D.SkinnedMesh(characters[randomChar].mesh.geometry, characters[randomChar].mesh.material)
    for (var j = 0; j < animations.length; j++) {
      clone.animations.push(animations[j].data);
      clone.clips.push(animations[j].data);
      clone.animationsData[j] = animations[j].data;
    }
    clone.rotateY(Math.PI)
    clone.castShadow = true;
    var entity = new SteeringEntity(clone)
    entity.position.set(Math.random() * (5000 - (-5000)) + (-5000), 0, Math.random() * (5000 - (-5000)) + (-5000));
    entities.push(entity);
    scene.add(entity);
  }
});
gui.add(params, 'maxSpeed', 2, 20).name('Max Speed').step(1);
gui.add(params, 'maxForce', 1, 20).name('Max Force').step(1);
gui.add(params, 'wanderDistance', 10, 100).name('Wander Distance').step(1);
gui.add(params, 'wanderRadius', 5, 1000).name('Wander Radius').step(1);
gui.add(params, 'wanderRange', 1, 20).name('Wander Range').step(1);
window.addEventListener('resize', onWindowResize, false);
document.addEventListener('mousedown', onClick, true);
animate();
```

--------------------------------

### Initialize Three.js Scene and Objects

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Seek.html

Sets up the Three.js scene, camera, renderer, controls, and performance stats. It also adds lighting, a floor, a ball, and initializes character entities with loaded models and animations.

```javascript
function init(element) {
    container = document.getElementById(element);
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
    scene = new THREE.Scene();
    renderer = new THREE.WebGLRenderer({alpha: true});
    renderer.setClearColor(0x333333, 0);
    renderer.shadowMap.enabled=true;
    renderer.shadowMap.type = THREE.PCFSoftShadowMap;
    renderer.gammaInput = true;
    renderer.gammaOutput = true;
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.domElement.style.position = 'absolute';
    renderer.domElement.style.top = 0;
    container.appendChild(renderer.domElement);
    camera.position.set(0, 10000, 10000);
    camera.lookAt(new THREE.Vector3(0, 0, 0));
    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.maxPolarAngle = Math.PI * 0.5;
    controls.minDistance = 100;
    controls.maxDistance = 30000;
    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.left = '180px'
    stats.domElement.style.zIndex = 100;
    container.appendChild(stats.domElement);
    clock = new THREE.Clock();
    //Lights
    var spotLight = new THREE.SpotLight( 
        0xffffff, 5.0
    );
    spotLight.position.set( 0, 5000, 0 );
    spotLight.castShadow = true;
    spotLight.shadow.mapSize.width = 1024;
    spotLight.shadow.mapSize.height = 1024;
    spotLight.angle = 1;
    spotLight.penumbra = 0.5;
    spotLight.decay = 2;
    spotLight.distance = 10000;
    var ambient = new THREE.AmbientLight( 0xFFFFFF );
    ambient.intensity=0.25
    scene.add( spotLight );
    scene.add( ambient );
    // Floor
    var floorGeometry = new THREE.CubeGeometry(10000, 10000, 1, 32);
    var floorMaterial = new THREE.MeshPhongMaterial({color: 0x4DA6FF});
    var floor = new THREE.Mesh(floorGeometry, floorMaterial);
    floor.receiveShadow=true;
    floor.rotation.x = -Math.PI * .5;
    scene.add(floor);
    //Ball
    var ballGeometry = new THREE.SphereGeometry(30, 32, 32);
    var ballMaterial = new THREE.MeshLambertMaterial({color: 0x002DB2});
    ball = new THREE.Mesh(ballGeometry, ballMaterial);
    ball.castShadow=true;
    ball.position.set(Math.random() * (5000 - (-5000)) + (-5000), 30, Math.random() * (5000 - (-5000)) + (-5000));
    scene.add(ball);
    params={maxSpeed:6, maxForce:3, numEntities:50}
    // Entities
    entities=[]
    for(var i=0;i<params.numEntities;i++) {
        var randomChar=Math.floor(Math.random() * ((2-0)+1) + 0);
        var clone = new THREE.SEA3D.SkinnedMesh(characters[randomChar].mesh.geometry, characters[randomChar].mesh.material)
        for(var j=0;j<animations.length;j++) {
            clone.animations.push(animations[j].data);
            clone.clips.push(animations[j].data);
            clone.animationsData[j] = animations[j].data;
        }
        clone.rotateY(Math.PI
    }
```

--------------------------------

### Scene Initialization and Setup in Three.js

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/LeaderFollow.html

Initializes the Three.js scene, camera, renderer, controls, and performance stats. Sets up lighting, a floor, and defines rendering parameters. This forms the foundation for the 3D environment.

```javascript
function init(element) {
  container = document.getElementById(element);
  camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 50000);
  scene = new THREE.Scene();
  renderer = new THREE.WebGLRenderer({alpha: true});
  renderer.setClearColor(0x333333, 0);
  renderer.shadowMap.enabled=true;
  renderer.shadowMap.type = THREE.PCFSoftShadowMap;
  renderer.gammaInput = true;
  renderer.gammaOutput = true;
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.domElement.style.position = 'absolute';
  renderer.domElement.style.top = 0;
  container.appendChild(renderer.domElement);
  camera.position.set(0, 10000, 10000);
  camera.lookAt(new THREE.Vector3(0, 0, 0));
  controls = new THREE.OrbitControls(camera, renderer.domElement);
  controls.maxPolarAngle = Math.PI * 0.5;
  controls.minDistance = 100;
  controls.maxDistance = 30000;
  stats = new Stats();
  stats.domElement.style.position = 'absolute';
  stats.domElement.style.bottom = '0px';
  stats.domElement.style.left = '180px'
  stats.domElement.style.zIndex = 100;
  container.appendChild(stats.domElement);
  clock = new THREE.Clock();
  //Lights
  var spotLight = new THREE.SpotLight( 
    0xffffff, 5.0 
  );
  spotLight.position.set( 0, 5000, 0 );
  spotLight.castShadow = true;
  spotLight.shadow.mapSize.width = 1024;
  spotLight.shadow.mapSize.height = 1024;
  spotLight.angle = 1;
  spotLight.penumbra = 0.5;
  spotLight.decay = 2;
  spotLight.distance = 10000;
  var ambient = new THREE.AmbientLight( 
    0xFFFFFF 
  );
  ambient.intensity=0.25
  scene.add( spotLight );
  scene.add( ambient );
  // Floor
  var floorGeometry = new THREE.CubeGeometry(10000, 10000, 1, 32);
  var floorMaterial = new THREE.MeshPhongMaterial({color: 0x4DA6FF});
  var floor = new THREE.Mesh(floorGeometry, floorMaterial);
  floor.receiveShadow=true;
  floor.rotation.x = -Math.PI * .5;
  scene.add(floor);
  params={maxSpeed:6, maxForce:3, wanderDistance:10, wanderRadius:5, wanderRange:1, numFollowers:20, distance:400, separationRadius:300, maxSeparation:500, leaderSightRadius:1000, arrivalThreshold:200}
  var mesh1=characters[0].mesh;
  mesh1.castShadow=true;
  //attach animations
  for(var i=0;i<animations.length;i++) {
    mesh1.animations.push(animations[i].data);
    mesh1.clips.push(animations[i].data);
    mesh1.animationsData[i] = animations[i].data;
  }
  var baseGeometry=new THREE.CylinderGeometry(100, 100, 20, 32);
  var baseMaterial=new THREE.MeshBasicMaterial({color: 0xFF0000, transparent:true, opacity:0.5});
  var base=new THREE.Mesh( baseGeometry, baseMaterial );
  mesh1.add(base)
  // Leader
  entity1=new SteeringEntity(mesh1);
  entity1.maxSpeed=6;
  entity1.position.set(Mat
```

--------------------------------

### Entity Initialization and Boundary Setup (JavaScript)

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Seek.html

This snippet demonstrates the initialization of steering entities and the definition of world boundaries. Each entity is created with a skinned mesh, random positioning within a large area, and added to the scene. Boundaries are defined using THREE.Box3 to constrain entity movement, though the provided code snippet does not explicitly enforce these boundaries in the animation loop.

```javascript
var entity=new SteeringEntity(clone);
entity.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
entities.push(entity);
scene.add(entity);

//Plane boundaries (do not cross)
boundaries = new THREE.Box3(new THREE.Vector3(-5000, 0, -5000), new THREE.Vector3(5000, 0, 5000));
//Plane boundaries (do not cross)
boundaries = new THREE.Box3(new THREE.Vector3(-5000, 0, -5000), new THREE.Vector3(5000, 0, 5000));
```

--------------------------------

### Three.js Scene Setup and Entity Initialization

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Queue.html

Initializes the Three.js scene, sets up materials and meshes for the floor and the leader character, attaches animations, and creates the leader entity. Followers are then instantiated and added to the scene.

```javascript
var floorMaterial = new THREE.MeshPhongMaterial({color: 0x4DA6FF});
var floor = new THREE.Mesh(floorGeometry, floorMaterial);
floor.receiveShadow=true;
floor.rotation.x = -Math.PI * .5;
scene.add(floor);

params={maxSpeed:6, maxForce:4, lookAtDirection:true, numQueued:50, maxQueueRadius:500}

var mesh1=characters[0].mesh;
mesh1.castShadow=true;

//attach animations
for(var i=0;i<animations.length;i++) {
    mesh1.animations.push(animations[i].data);
    mesh1.clips.push(animations[i].data);
    mesh1.animationsData[i] = animations[i].data;
}

var baseGeometry=new THREE.CylinderGeometry(100, 100, 20, 32);
var baseMaterial=new THREE.MeshBasicMaterial({color: 0xFF0000, transparent:true, opacity:0.5});
var base=new THREE.Mesh( baseGeometry, baseMaterial );
mesh1.add(base)

// Leader entity
entity1=new SteeringEntity(mesh1);
entity1.position.set(Math.random() * (2500 - (-2500)) + (-2500) ,0,Math.random() * (2500 - (-2500)) + (-2500));
entity1.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
scene.add(entity1);

// Followers
queued=[]
for(var i=0;i<params.numQueued;i++) {
    var clone = new THREE.SEA3D.SkinnedMesh(characters[2].mesh.geometry, characters[2].mesh.material)
    for(var j=0;j<animations.length;j++) {
        clone.animations.push(animations[j].data);
        clone.clips.push(animations[j].data);
        clone.animationsData[j] = animations[j].data;
    }
    clone.rotateY(Math.PI)
    clone.scale.set(1,1,1)
    clone.castShadow=true;

    var entity=new SteeringEntity(clone);
    entity.position.set(Math.random() * (5000 - (-5000)) + (-5000) ,0,Math.random() * (5000 - (-5000)) + (-5000));
    queued.push(entity);
    scene.add(entity);
}

//Plane boundaries (do not cross)
boundaries = new THREE.Box3(new THREE.Vector3(-5000, 0, -5000), new THREE.Vector3(5000, 0, 5000));
```

--------------------------------

### Handle Window Resize Event

Source: https://github.com/erosmarcon/three-steer/blob/master/examples/animated/Flocking.html

Updates the camera aspect ratio and renderer size when the browser window is resized to ensure the scene is displayed correctly.

```javascript
function onWindowResize() {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
}
```