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webgl_geometry_minecraft.html
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<!doctype html>
<html lang="en">
<head>
<title>three.js webgl - geometry - minecraft</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #61443e;
font-family:Monospace;
font-size:13px;
text-align:center;
background-color: #bfd1e5;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
a {
color: #a06851;
}
#oldie {
background:rgb(100,0,0) !important;
color:#fff !important;
margin-top:10em !important;
}
#oldie a { color:#fff }
</style>
</head>
<body>
<div id="container"><br /><br /><br /><br /><br />Generating world...</div>
<div id="info"><a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - <a href="http://www.minecraft.net/" target="_blank">minecraft</a> demo. featuring <a href="http://painterlypack.net/" target="_blank">painterly pack</a><br />(left click: forward, right click: backward)</div>
<script src="../build/Three.js"></script>
<script src="js/ImprovedNoise.js"></script>
<script src="js/Detector.js"></script>
<script src="js/Stats.js"></script>
<script>
if ( ! Detector.webgl ) {
Detector.addGetWebGLMessage();
document.getElementById( 'container' ).innerHTML = "";
}
var container, stats;
var camera, controls, scene, renderer;
var mesh;
var worldWidth = 128, worldDepth = 128,
worldHalfWidth = worldWidth / 2, worldHalfDepth = worldDepth / 2,
data = generateHeight( worldWidth, worldDepth );
var clock = new THREE.Clock();
init();
animate();
function init() {
container = document.getElementById( 'container' );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
scene.add( camera );
controls = new THREE.FirstPersonControls( camera );
controls.movementSpeed = 1000;
controls.lookSpeed = 0.125;
controls.lookVertical = true;
var grass_dirt = loadTexture( 'textures/minecraft/grass_dirt.png' ),
grass = loadTexture( 'textures/minecraft/grass.png' ),
dirt = loadTexture( 'textures/minecraft/dirt.png' );
var materials = [
grass_dirt, // right
grass_dirt, // left
grass, // top
dirt, // bottom
grass_dirt, // back
grass_dirt // front
];
var h, h2, px, nx, pz, nz, cubes = [];
for ( var i = 0; i < 16; i++ ) {
px = ( i & 8 ) == 8;
nx = ( i & 4 ) == 4;
pz = ( i & 2 ) == 2;
nz = ( i & 1 ) == 1;
cubes[ i ] = new THREE.CubeGeometry( 100, 100, 100, 1, 1, 1, materials, { px: px, nx: nx, py: true, ny: false, pz: pz, nz: nz } );
}
var geometry = new THREE.Geometry();
camera.position.y = getY( worldHalfWidth, worldHalfDepth ) * 100 + 100;
for ( var z = 0; z < worldDepth; z ++ ) {
for ( var x = 0; x < worldWidth; x ++ ) {
px = nx = pz = nz = 0;
h = getY( x, z );
h2 = getY( x + 1, z );
px = ( h2 != h && h2 != h + 1 ) || x == 0 ? 1 : 0;
h2 = getY( x - 1, z );
nx = ( h2 != h && h2 != h + 1 ) || x == worldWidth - 1 ? 1 : 0;
h2 = getY( x, z + 1 );
pz = ( h2 != h && h2 != h + 1 ) || z == worldDepth - 1 ? 1 : 0;
h2 = getY( x, z - 1 );
nz = ( h2 != h && h2 != h + 1 ) || z == 0 ? 1 : 0;
mesh = new THREE.Mesh( cubes[ px * 8 + nx * 4 + pz * 2 + nz ] );
mesh.position.x = x * 100 - worldHalfWidth * 100;
mesh.position.y = h * 100;
mesh.position.z = z * 100 - worldHalfDepth * 100;
THREE.GeometryUtils.merge( geometry, mesh );
}
}
mesh = new THREE.Mesh( geometry, new THREE.MeshFaceMaterial() );
scene.add( mesh );
var ambientLight = new THREE.AmbientLight( 0xcccccc );
scene.add( ambientLight );
var directionalLight = new THREE.DirectionalLight( 0xffffff, 2 );
directionalLight.position.set( 1, 1, 0.5 ).normalize();
scene.add( directionalLight );
renderer = new THREE.WebGLRenderer( { clearColor: 0xbfd1e5 } );
renderer.setSize( window.innerWidth, window.innerHeight );
container.innerHTML = "";
container.appendChild( renderer.domElement );
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild( stats.domElement );
}
function loadTexture( path ) {
var image = new Image();
image.onload = function () { texture.needsUpdate = true; };
image.src = path;
var texture = new THREE.Texture( image, new THREE.UVMapping(), THREE.ClampToEdgeWrapping, THREE.ClampToEdgeWrapping, THREE.NearestFilter, THREE.LinearMipMapLinearFilter );
return new THREE.MeshLambertMaterial( { map: texture, ambient: 0xbbbbbb } );
}
function generateHeight( width, height ) {
var data = [], perlin = new ImprovedNoise(),
size = width * height, quality = 2, z = Math.random() * 100;
for ( var j = 0; j < 4; j ++ ) {
if ( j == 0 ) for ( var i = 0; i < size; i ++ ) data[ i ] = 0;
for ( var i = 0; i < size; i ++ ) {
var x = i % width, y = ~~ ( i / width );
data[ i ] += perlin.noise( x / quality, y / quality, z ) * quality;
}
quality *= 4
}
return data;
}
function getY( x, z ) {
return ~~( data[ x + z * worldWidth ] * 0.2 );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
controls.update( clock.getDelta() );
renderer.render( scene, camera );
}
</script>
</body>
</html>