123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js - misc - octree collisions</title>
- <meta charset=utf-8 />
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- </head>
- <body>
- <div id="info">Octree threejs demo - basic collisions with static triangle mesh<br />WASD to move, space to jump, use mouse to throw balls and move the camera.</div>
- <div id="container"></div>
- <script type="module">
- import * as THREE from '../build/three.module.js';
- import Stats from './jsm/libs/stats.module.js';
- import { GLTFLoader } from './jsm/loaders/GLTFLoader.js';
- import { Octree } from './jsm/math/Octree.js';
- import { Capsule } from './jsm/math/Capsule.js';
- const clock = new THREE.Clock();
- const scene = new THREE.Scene();
- scene.background = new THREE.Color( 0x88ccff );
- const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
- camera.rotation.order = 'YXZ';
- const ambientlight = new THREE.AmbientLight( 0x6688cc );
- scene.add( ambientlight );
- const fillLight1 = new THREE.DirectionalLight( 0xff9999, 0.5 );
- fillLight1.position.set( - 1, 1, 2 );
- scene.add( fillLight1 );
- const fillLight2 = new THREE.DirectionalLight( 0x8888ff, 0.2 );
- fillLight2.position.set( 0, - 1, 0 );
- scene.add( fillLight2 );
- const directionalLight = new THREE.DirectionalLight( 0xffffaa, 1.2 );
- directionalLight.position.set( - 5, 25, - 1 );
- directionalLight.castShadow = true;
- directionalLight.shadow.camera.near = 0.01;
- directionalLight.shadow.camera.far = 500;
- directionalLight.shadow.camera.right = 30;
- directionalLight.shadow.camera.left = - 30;
- directionalLight.shadow.camera.top = 30;
- directionalLight.shadow.camera.bottom = - 30;
- directionalLight.shadow.mapSize.width = 1024;
- directionalLight.shadow.mapSize.height = 1024;
- directionalLight.shadow.radius = 4;
- directionalLight.shadow.bias = - 0.00006;
- scene.add( directionalLight );
- const renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.shadowMap.enabled = true;
- renderer.shadowMap.type = THREE.VSMShadowMap;
- const container = document.getElementById( 'container' );
- container.appendChild( renderer.domElement );
- const stats = new Stats();
- stats.domElement.style.position = 'absolute';
- stats.domElement.style.top = '0px';
- container.appendChild( stats.domElement );
- const GRAVITY = 30;
- const NUM_SPHERES = 20;
- const SPHERE_RADIUS = 0.2;
- const sphereGeometry = new THREE.SphereGeometry( SPHERE_RADIUS, 32, 32 );
- const sphereMaterial = new THREE.MeshStandardMaterial( { color: 0x888855, roughness: 0.8, metalness: 0.5 } );
- const spheres = [];
- let sphereIdx = 0;
- for ( let i = 0; i < NUM_SPHERES; i ++ ) {
- const sphere = new THREE.Mesh( sphereGeometry, sphereMaterial );
- sphere.castShadow = true;
- sphere.receiveShadow = true;
- scene.add( sphere );
- spheres.push( { mesh: sphere, collider: new THREE.Sphere( new THREE.Vector3( 0, - 100, 0 ), SPHERE_RADIUS ), velocity: new THREE.Vector3() } );
- }
- const worldOctree = new Octree();
- const playerCollider = new Capsule( new THREE.Vector3( 0, 0.35, 0 ), new THREE.Vector3( 0, 1, 0 ), 0.35 );
- const playerVelocity = new THREE.Vector3();
- const playerDirection = new THREE.Vector3();
- let playerOnFloor = false;
- const keyStates = {};
- document.addEventListener( 'keydown', ( event ) => {
- keyStates[ event.code ] = true;
- } );
- document.addEventListener( 'keyup', ( event ) => {
- keyStates[ event.code ] = false;
- } );
- document.addEventListener( 'mousedown', () => {
- document.body.requestPointerLock();
- } );
- document.body.addEventListener( 'mousemove', ( event ) => {
- if ( document.pointerLockElement === document.body ) {
- camera.rotation.y -= event.movementX / 500;
- camera.rotation.x -= event.movementY / 500;
- }
- } );
- window.addEventListener( 'resize', onWindowResize );
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- document.addEventListener( 'click', () => {
- const sphere = spheres[ sphereIdx ];
- camera.getWorldDirection( playerDirection );
- sphere.collider.center.copy( playerCollider.end );
- sphere.velocity.copy( playerDirection ).multiplyScalar( 30 );
- sphereIdx = ( sphereIdx + 1 ) % spheres.length;
- } );
- function playerCollitions() {
- const result = worldOctree.capsuleIntersect( playerCollider );
- playerOnFloor = false;
- if ( result ) {
- playerOnFloor = result.normal.y > 0;
- if ( ! playerOnFloor ) {
- playerVelocity.addScaledVector( result.normal, - result.normal.dot( playerVelocity ) );
- }
- playerCollider.translate( result.normal.multiplyScalar( result.depth ) );
- }
- }
- function updatePlayer( deltaTime ) {
- if ( playerOnFloor ) {
- const damping = Math.exp( - 3 * deltaTime ) - 1;
- playerVelocity.addScaledVector( playerVelocity, damping );
- } else {
- playerVelocity.y -= GRAVITY * deltaTime;
- }
- const deltaPosition = playerVelocity.clone().multiplyScalar( deltaTime );
- playerCollider.translate( deltaPosition );
- playerCollitions();
- camera.position.copy( playerCollider.end );
- }
- function spheresCollisions() {
- for ( let i = 0; i < spheres.length; i ++ ) {
- const s1 = spheres[ i ];
- for ( let j = i + 1; j < spheres.length; j ++ ) {
- const s2 = spheres[ j ];
- const d2 = s1.collider.center.distanceToSquared( s2.collider.center );
- const r = s1.collider.radius + s2.collider.radius;
- const r2 = r * r;
- if ( d2 < r2 ) {
- const normal = s1.collider.clone().center.sub( s2.collider.center ).normalize();
- const v1 = normal.clone().multiplyScalar( normal.dot( s1.velocity ) );
- const v2 = normal.clone().multiplyScalar( normal.dot( s2.velocity ) );
- s1.velocity.add( v2 ).sub( v1 );
- s2.velocity.add( v1 ).sub( v2 );
- const d = ( r - Math.sqrt( d2 ) ) / 2;
- s1.collider.center.addScaledVector( normal, d );
- s2.collider.center.addScaledVector( normal, - d );
- }
- }
- }
- }
- function updateSpheres( deltaTime ) {
- spheres.forEach( sphere =>{
- sphere.collider.center.addScaledVector( sphere.velocity, deltaTime );
- const result = worldOctree.sphereIntersect( sphere.collider );
- if ( result ) {
- sphere.velocity.addScaledVector( result.normal, - result.normal.dot( sphere.velocity ) * 1.5 );
- sphere.collider.center.add( result.normal.multiplyScalar( result.depth ) );
- } else {
- sphere.velocity.y -= GRAVITY * deltaTime;
- }
- const damping = Math.exp( - 1.5 * deltaTime ) - 1;
- sphere.velocity.addScaledVector( sphere.velocity, damping );
- spheresCollisions();
- sphere.mesh.position.copy( sphere.collider.center );
- } );
- }
- function getForwardVector() {
- camera.getWorldDirection( playerDirection );
- playerDirection.y = 0;
- playerDirection.normalize();
- return playerDirection;
- }
- function getSideVector() {
- camera.getWorldDirection( playerDirection );
- playerDirection.y = 0;
- playerDirection.normalize();
- playerDirection.cross( camera.up );
- return playerDirection;
- }
- function controls( deltaTime ) {
- const speed = 25;
- if ( playerOnFloor ) {
- if ( keyStates[ 'KeyW' ] ) {
- playerVelocity.add( getForwardVector().multiplyScalar( speed * deltaTime ) );
- }
- if ( keyStates[ 'KeyS' ] ) {
- playerVelocity.add( getForwardVector().multiplyScalar( - speed * deltaTime ) );
- }
- if ( keyStates[ 'KeyA' ] ) {
- playerVelocity.add( getSideVector().multiplyScalar( - speed * deltaTime ) );
- }
- if ( keyStates[ 'KeyD' ] ) {
- playerVelocity.add( getSideVector().multiplyScalar( speed * deltaTime ) );
- }
- if ( keyStates[ 'Space' ] ) {
- playerVelocity.y = 15;
- }
- }
- }
- const loader = new GLTFLoader().setPath( './models/gltf/' );
- loader.load( 'collision-world.glb', ( gltf ) => {
- scene.add( gltf.scene );
- worldOctree.fromGraphNode( gltf.scene );
- gltf.scene.traverse( child => {
- if ( child.isMesh ) {
- child.castShadow = true;
- child.receiveShadow = true;
- if ( child.material.map ) {
- child.material.map.anisotropy = 8;
- }
- }
- } );
- animate();
- } );
- function animate() {
- const deltaTime = Math.min( 0.1, clock.getDelta() );
- controls( deltaTime );
- updatePlayer( deltaTime );
- updateSpheres( deltaTime );
- renderer.render( scene, camera );
- stats.update();
- requestAnimationFrame( animate );
- }
- </script>
- </body>
- </html>
|