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256 lines
6.5 KiB
256 lines
6.5 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - geometry - minecraft</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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background-color: #bfd1e5;
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color: #61443e;
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}
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a {
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color: #a06851;
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}
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</style>
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</head>
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<body>
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<div id="container"></div>
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<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - <a href="http://www.minecraft.net/" target="_blank" rel="noopener">minecraft</a> demo. featuring <a href="http://painterlypack.net/" target="_blank" rel="noopener">painterly pack</a><br />(left click: forward, right click: backward)</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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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/": "./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 Stats from 'three/addons/libs/stats.module.js';
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import { FirstPersonControls } from 'three/addons/controls/FirstPersonControls.js';
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import { ImprovedNoise } from 'three/addons/math/ImprovedNoise.js';
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import * as BufferGeometryUtils from 'three/addons/utils/BufferGeometryUtils.js';
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let container, stats;
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let camera, controls, scene, renderer;
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const worldWidth = 128, worldDepth = 128;
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const worldHalfWidth = worldWidth / 2;
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const worldHalfDepth = worldDepth / 2;
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const data = generateHeight( worldWidth, worldDepth );
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const clock = new THREE.Clock();
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init();
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animate();
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function init() {
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container = document.getElementById( 'container' );
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
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camera.position.y = getY( worldHalfWidth, worldHalfDepth ) * 100 + 100;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xbfd1e5 );
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// sides
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const matrix = new THREE.Matrix4();
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const pxGeometry = new THREE.PlaneGeometry( 100, 100 );
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pxGeometry.attributes.uv.array[ 1 ] = 0.5;
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pxGeometry.attributes.uv.array[ 3 ] = 0.5;
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pxGeometry.rotateY( Math.PI / 2 );
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pxGeometry.translate( 50, 0, 0 );
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const nxGeometry = new THREE.PlaneGeometry( 100, 100 );
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nxGeometry.attributes.uv.array[ 1 ] = 0.5;
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nxGeometry.attributes.uv.array[ 3 ] = 0.5;
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nxGeometry.rotateY( - Math.PI / 2 );
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nxGeometry.translate( - 50, 0, 0 );
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const pyGeometry = new THREE.PlaneGeometry( 100, 100 );
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pyGeometry.attributes.uv.array[ 5 ] = 0.5;
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pyGeometry.attributes.uv.array[ 7 ] = 0.5;
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pyGeometry.rotateX( - Math.PI / 2 );
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pyGeometry.translate( 0, 50, 0 );
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const pzGeometry = new THREE.PlaneGeometry( 100, 100 );
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pzGeometry.attributes.uv.array[ 1 ] = 0.5;
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pzGeometry.attributes.uv.array[ 3 ] = 0.5;
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pzGeometry.translate( 0, 0, 50 );
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const nzGeometry = new THREE.PlaneGeometry( 100, 100 );
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nzGeometry.attributes.uv.array[ 1 ] = 0.5;
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nzGeometry.attributes.uv.array[ 3 ] = 0.5;
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nzGeometry.rotateY( Math.PI );
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nzGeometry.translate( 0, 0, - 50 );
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//
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const geometries = [];
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for ( let z = 0; z < worldDepth; z ++ ) {
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for ( let x = 0; x < worldWidth; x ++ ) {
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const h = getY( x, z );
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matrix.makeTranslation(
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x * 100 - worldHalfWidth * 100,
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h * 100,
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z * 100 - worldHalfDepth * 100
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);
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const px = getY( x + 1, z );
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const nx = getY( x - 1, z );
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const pz = getY( x, z + 1 );
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const nz = getY( x, z - 1 );
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geometries.push( pyGeometry.clone().applyMatrix4( matrix ) );
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if ( ( px !== h && px !== h + 1 ) || x === 0 ) {
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geometries.push( pxGeometry.clone().applyMatrix4( matrix ) );
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}
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if ( ( nx !== h && nx !== h + 1 ) || x === worldWidth - 1 ) {
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geometries.push( nxGeometry.clone().applyMatrix4( matrix ) );
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}
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if ( ( pz !== h && pz !== h + 1 ) || z === worldDepth - 1 ) {
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geometries.push( pzGeometry.clone().applyMatrix4( matrix ) );
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}
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if ( ( nz !== h && nz !== h + 1 ) || z === 0 ) {
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geometries.push( nzGeometry.clone().applyMatrix4( matrix ) );
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}
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}
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}
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const geometry = BufferGeometryUtils.mergeBufferGeometries( geometries );
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geometry.computeBoundingSphere();
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const texture = new THREE.TextureLoader().load( 'textures/minecraft/atlas.png' );
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texture.magFilter = THREE.NearestFilter;
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const mesh = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { map: texture, side: THREE.DoubleSide } ) );
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scene.add( mesh );
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const ambientLight = new THREE.AmbientLight( 0xcccccc );
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scene.add( ambientLight );
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const directionalLight = new THREE.DirectionalLight( 0xffffff, 2 );
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directionalLight.position.set( 1, 1, 0.5 ).normalize();
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scene.add( directionalLight );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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controls = new FirstPersonControls( camera, renderer.domElement );
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controls.movementSpeed = 1000;
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controls.lookSpeed = 0.125;
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controls.lookVertical = true;
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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controls.handleResize();
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}
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function generateHeight( width, height ) {
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const data = [], perlin = new ImprovedNoise(),
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size = width * height, z = Math.random() * 100;
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let quality = 2;
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for ( let j = 0; j < 4; j ++ ) {
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if ( j === 0 ) for ( let i = 0; i < size; i ++ ) data[ i ] = 0;
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for ( let i = 0; i < size; i ++ ) {
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const x = i % width, y = ( i / width ) | 0;
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data[ i ] += perlin.noise( x / quality, y / quality, z ) * quality;
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}
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quality *= 4;
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}
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return data;
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}
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function getY( x, z ) {
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return ( data[ x + z * worldWidth ] * 0.15 ) | 0;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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controls.update( clock.getDelta() );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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