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- <!-- Licensed under a BSD license. See license.html for license -->
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
- <title>Three.js - Game - Just Player</title>
- <style>
- html {
- box-sizing: border-box;
- }
- *, *:before, *:after {
- box-sizing: inherit;
- }
- html, body {
- margin: 0;
- height: 100%;
- }
- #c {
- width: 100%;
- height: 100%;
- display: block;
- }
- #loading {
- position: absolute;
- left: 0;
- top: 0;
- width: 100%;
- height: 100%;
- display: flex;
- align-items: center;
- justify-content: center;
- text-align: center;
- font-size: xx-large;
- font-family: sans-serif;
- }
- #loading>div>div {
- padding: 2px;
- }
- .progress {
- width: 50vw;
- border: 1px solid black;
- }
- #progressbar {
- width: 0%;
- transition: width ease-out .5s;
- height: 1em;
- background-color: #888;
- background-image: linear-gradient(
- -45deg,
- rgba(255, 255, 255, .5) 25%,
- transparent 25%,
- transparent 50%,
- rgba(255, 255, 255, .5) 50%,
- rgba(255, 255, 255, .5) 75%,
- transparent 75%,
- transparent
- );
- background-size: 50px 50px;
- animation: progressanim 2s linear infinite;
- }
- @keyframes progressanim {
- 0% {
- background-position: 50px 50px;
- }
- 100% {
- background-position: 0 0;
- }
- }
- </style>
- </head>
- <body>
- <canvas id="c"></canvas>
- <div id="loading">
- <div>
- <div>...loading...</div>
- <div class="progress"><div id="progressbar"></div></div>
- </div>
- </div>
- </body>
- <script type="importmap">
- {
- "imports": {
- "three": "../../build/three.module.js",
- "three/addons/": "../../examples/jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
- import * as SkeletonUtils from 'three/addons/utils/SkeletonUtils.js';
- function main() {
- const canvas = document.querySelector( '#c' );
- const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );
- const fov = 45;
- const aspect = 2; // the canvas default
- const near = 0.1;
- const far = 1000;
- const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
- camera.position.set( 0, 40, 80 );
- const controls = new OrbitControls( camera, canvas );
- controls.target.set( 0, 5, 0 );
- controls.update();
- const scene = new THREE.Scene();
- scene.background = new THREE.Color( 'white' );
- function addLight( ...pos ) {
- const color = 0xFFFFFF;
- const intensity = 2.5;
- const light = new THREE.DirectionalLight( color, intensity );
- light.position.set( ...pos );
- scene.add( light );
- scene.add( light.target );
- }
- addLight( 5, 5, 2 );
- addLight( - 5, 5, 5 );
- const manager = new THREE.LoadingManager();
- manager.onLoad = init;
- const progressbarElem = document.querySelector( '#progressbar' );
- manager.onProgress = ( url, itemsLoaded, itemsTotal ) => {
- progressbarElem.style.width = `${itemsLoaded / itemsTotal * 100 | 0}%`;
- };
- const models = {
- pig: { url: 'resources/models/animals/Pig.gltf' },
- cow: { url: 'resources/models/animals/Cow.gltf' },
- llama: { url: 'resources/models/animals/Llama.gltf' },
- pug: { url: 'resources/models/animals/Pug.gltf' },
- sheep: { url: 'resources/models/animals/Sheep.gltf' },
- zebra: { url: 'resources/models/animals/Zebra.gltf' },
- horse: { url: 'resources/models/animals/Horse.gltf' },
- knight: { url: 'resources/models/knight/KnightCharacter.gltf' },
- };
- {
- const gltfLoader = new GLTFLoader( manager );
- for ( const model of Object.values( models ) ) {
- gltfLoader.load( model.url, ( gltf ) => {
- model.gltf = gltf;
- } );
- }
- }
- function prepModelsAndAnimations() {
- Object.values( models ).forEach( model => {
- const animsByName = {};
- model.gltf.animations.forEach( ( clip ) => {
- animsByName[ clip.name ] = clip;
- // Should really fix this in .blend file
- if ( clip.name === 'Walk' ) {
- clip.duration /= 2;
- }
- } );
- model.animations = animsByName;
- } );
- }
- function removeArrayElement( array, element ) {
- const ndx = array.indexOf( element );
- if ( ndx >= 0 ) {
- array.splice( ndx, 1 );
- }
- }
- class SafeArray {
- constructor() {
- this.array = [];
- this.addQueue = [];
- this.removeQueue = new Set();
- }
- get isEmpty() {
- return this.addQueue.length + this.array.length > 0;
- }
- add( element ) {
- this.addQueue.push( element );
- }
- remove( element ) {
- this.removeQueue.add( element );
- }
- forEach( fn ) {
- this._addQueued();
- this._removeQueued();
- for ( const element of this.array ) {
- if ( this.removeQueue.has( element ) ) {
- continue;
- }
- fn( element );
- }
- this._removeQueued();
- }
- _addQueued() {
- if ( this.addQueue.length ) {
- this.array.splice( this.array.length, 0, ...this.addQueue );
- this.addQueue = [];
- }
- }
- _removeQueued() {
- if ( this.removeQueue.size ) {
- this.array = this.array.filter( element => ! this.removeQueue.has( element ) );
- this.removeQueue.clear();
- }
- }
- }
- class GameObjectManager {
- constructor() {
- this.gameObjects = new SafeArray();
- }
- createGameObject( parent, name ) {
- const gameObject = new GameObject( parent, name );
- this.gameObjects.add( gameObject );
- return gameObject;
- }
- removeGameObject( gameObject ) {
- this.gameObjects.remove( gameObject );
- }
- update() {
- this.gameObjects.forEach( gameObject => gameObject.update() );
- }
- }
- const globals = {
- time: 0,
- deltaTime: 0,
- };
- const gameObjectManager = new GameObjectManager();
- class GameObject {
- constructor( parent, name ) {
- this.name = name;
- this.components = [];
- this.transform = new THREE.Object3D();
- parent.add( this.transform );
- }
- addComponent( ComponentType, ...args ) {
- const component = new ComponentType( this, ...args );
- this.components.push( component );
- return component;
- }
- removeComponent( component ) {
- removeArrayElement( this.components, component );
- }
- getComponent( ComponentType ) {
- return this.components.find( c => c instanceof ComponentType );
- }
- update() {
- for ( const component of this.components ) {
- component.update();
- }
- }
- }
- // Base for all components
- class Component {
- constructor( gameObject ) {
- this.gameObject = gameObject;
- }
- update() {
- }
- }
- class SkinInstance extends Component {
- constructor( gameObject, model ) {
- super( gameObject );
- this.model = model;
- this.animRoot = SkeletonUtils.clone( this.model.gltf.scene );
- this.mixer = new THREE.AnimationMixer( this.animRoot );
- gameObject.transform.add( this.animRoot );
- this.actions = {};
- }
- setAnimation( animName ) {
- const clip = this.model.animations[ animName ];
- // turn off all current actions
- for ( const action of Object.values( this.actions ) ) {
- action.enabled = false;
- }
- // get or create existing action for clip
- const action = this.mixer.clipAction( clip );
- action.enabled = true;
- action.reset();
- action.play();
- this.actions[ animName ] = action;
- }
- update() {
- this.mixer.update( globals.deltaTime );
- }
- }
- class Player extends Component {
- constructor( gameObject ) {
- super( gameObject );
- const model = models.knight;
- this.skinInstance = gameObject.addComponent( SkinInstance, model );
- this.skinInstance.setAnimation( 'Run' );
- }
- }
- function init() {
- // hide the loading bar
- const loadingElem = document.querySelector( '#loading' );
- loadingElem.style.display = 'none';
- prepModelsAndAnimations();
- {
- const gameObject = gameObjectManager.createGameObject( scene, 'player' );
- gameObject.addComponent( Player );
- }
- }
- function resizeRendererToDisplaySize( renderer ) {
- const canvas = renderer.domElement;
- const width = canvas.clientWidth;
- const height = canvas.clientHeight;
- const needResize = canvas.width !== width || canvas.height !== height;
- if ( needResize ) {
- renderer.setSize( width, height, false );
- }
- return needResize;
- }
- let then = 0;
- function render( now ) {
- // convert to seconds
- globals.time = now * 0.001;
- // make sure delta time isn't too big.
- globals.deltaTime = Math.min( globals.time - then, 1 / 20 );
- then = globals.time;
- if ( resizeRendererToDisplaySize( renderer ) ) {
- const canvas = renderer.domElement;
- camera.aspect = canvas.clientWidth / canvas.clientHeight;
- camera.updateProjectionMatrix();
- }
- gameObjectManager.update();
- renderer.render( scene, camera );
- requestAnimationFrame( render );
- }
- requestAnimationFrame( render );
- }
- main();
- </script>
- </html>
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