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