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flatmap.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js</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="style.css">
<style>
#blocker {
position: absolute;
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.5);
}
#instructions {
width: 100%;
height: 100%;
display: -webkit-box;
display: -moz-box;
display: box;
-webkit-box-orient: horizontal;
-moz-box-orient: horizontal;
box-orient: horizontal;
-webkit-box-pack: center;
-moz-box-pack: center;
box-pack: center;
-webkit-box-align: center;
-moz-box-align: center;
box-align: center;
color: #ffffff;
text-align: center;
font-family: Arial;
font-size: 14px;
line-height: 24px;
cursor: pointer;
}
#panel {
position: fixed;
top: 20;
left: 50%;
transform: translateX(-50%)
}
</style>
</head>
<body>
<div id="blocker">
<div id="instructions">
<span style="font-size:36px">Click to play</span>
<br /><br />
Move: WASD<br />
Jump: SPACE<br />
Look: MOUSE
</div>
</div>
<div id="panel">
Move: WASD Jump: SPACE
</div>
<script type="module">
import * as THREE from './js/three.module.js';
import { PointerLockControls } from './js/PointerLockControls.js';
import Stats from './js/stats.module.js';
let camera, scene, renderer, controls, stats;
const objects = [];
let raycaster;
let moveForward = false;
let moveBackward = false;
let moveLeft = false;
let moveRight = false;
let canJump = false;
let prevTime = performance.now();
const velocity = new THREE.Vector3();
const direction = new THREE.Vector3();
const vertex = new THREE.Vector3();
const color = new THREE.Color();
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.y = 40;
scene = new THREE.Scene();
scene.background = new THREE.Color(0xffffff);
scene.fog = new THREE.Fog(0xffffff, 0, 750);
const light = new THREE.HemisphereLight(0xeeeeff, 0x777788, 0.75);
light.position.set(0.5, 1, 0.75);
scene.add(light);
// sub light
const dirLight2 = new THREE.DirectionalLight(0x002288);
dirLight2.position.set(- 1, - 1, - 1);
scene.add(dirLight2);
controls = new PointerLockControls(camera, document.body);
const blocker = document.getElementById('blocker');
const instructions = document.getElementById('instructions');
instructions.addEventListener('click', function () {
controls.lock();
}, false);
controls.addEventListener('lock', function () {
instructions.style.display = 'none';
blocker.style.display = 'none';
});
controls.addEventListener('unlock', function () {
blocker.style.display = 'block';
instructions.style.display = '';
});
scene.add(controls.getObject());
const onKeyDown = function (event) {
switch (event.keyCode) {
case 38: // up
case 87: // w
moveForward = true;
break;
case 37: // left
case 65: // a
moveLeft = true;
break;
case 40: // down
case 83: // s
moveBackward = true;
break;
case 39: // right
case 68: // d
moveRight = true;
break;
case 32: // space
if (canJump === true) velocity.y += 350;
canJump = false;
break;
}
};
const onKeyUp = function (event) {
switch (event.keyCode) {
case 38: // up
case 87: // w
moveForward = false;
break;
case 37: // left
case 65: // a
moveLeft = false;
break;
case 40: // down
case 83: // s
moveBackward = false;
break;
case 39: // right
case 68: // d
moveRight = false;
break;
}
};
document.addEventListener('keydown', onKeyDown, false);
document.addEventListener('keyup', onKeyUp, false);
raycaster = new THREE.Raycaster(new THREE.Vector3(), new THREE.Vector3(0, - 1, 0), 0, 10);
// floor
let floorGeometry = new THREE.PlaneBufferGeometry(2000, 2000, 100, 100);
floorGeometry.rotateX(- Math.PI / 2);
// vertex displacement
let position = floorGeometry.attributes.position;
for (let i = 0, l = position.count; i < l; i++) {
vertex.fromBufferAttribute(position, i);
vertex.x += Math.random() * 20 - 10;
vertex.y += Math.random() * 2;
vertex.z += Math.random() * 20 - 10;
position.setXYZ(i, vertex.x, vertex.y, vertex.z);
}
floorGeometry = floorGeometry.toNonIndexed(); // ensure each face has unique vertices
position = floorGeometry.attributes.position;
const colorsFloor = [];
for (let i = 0, l = position.count; i < l; i++) {
color.setHSL(Math.random() * 0.3 + 0.5, 0.75, Math.random() * 0.25 + 0.75);
colorsFloor.push(color.r, color.g, color.b);
}
floorGeometry.setAttribute('color', new THREE.Float32BufferAttribute(colorsFloor, 3));
const floorMaterial = new THREE.MeshBasicMaterial({ vertexColors: true });
const floor = new THREE.Mesh(floorGeometry, floorMaterial);
scene.add(floor);
// objects
// const boxGeometry = new THREE.BoxBufferGeometry(20, 20, 20).toNonIndexed();
// position = boxGeometry.attributes.position;
// const colorsBox = [];
// for (let i = 0, l = position.count; i < l; i++) {
// color.setHSL(Math.random() * 0.3 + 0.5, 0.75, Math.random() * 0.25 + 0.75);
// colorsBox.push(color.r, color.g, color.b);
// }
// boxGeometry.setAttribute('color', new THREE.Float32BufferAttribute(colorsBox, 3));
// for (let i = 0; i < 500; i++) {
// const boxMaterial = new THREE.MeshPhongMaterial({ specular: 0xffffff, flatShading: true, vertexColors: true });
// boxMaterial.color.setHSL(Math.random() * 0.2 + 0.5, 0.75, Math.random() * 0.25 + 0.75);
// const box = new THREE.Mesh(boxGeometry, boxMaterial);
// box.position.x = Math.floor(Math.random() * 20 - 10) * 20;
// box.position.y = Math.floor(Math.random() * 20) * 20 + 10;
// box.position.z = Math.floor(Math.random() * 20 - 10) * 20;
// scene.add(box);
// objects.push(box);
// }
const geometry = new THREE.CylinderBufferGeometry(0, 20, 70, 4, 1);
const material = new THREE.MeshPhongMaterial({ color: 0xffffff, flatShading: true });
for (let i = 0; i < 500; i++) {
const mesh = new THREE.Mesh(geometry, material);
mesh.position.x = Math.random() * 1200 - 600;
mesh.position.y = 0;
mesh.position.z = Math.random() * 1200 - 600;
mesh.updateMatrix();
mesh.matrixAutoUpdate = false;
scene.add(mesh);
}
//
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
//
stats = new Stats();
document.body.appendChild(stats.dom);
window.addEventListener('resize', onWindowResize, false);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
const time = performance.now();
if (controls.isLocked === true) {
raycaster.ray.origin.copy(controls.getObject().position);
raycaster.ray.origin.y -= 10;
const intersections = raycaster.intersectObjects(objects);
const onObject = intersections.length > 0;
const delta = (time - prevTime) / 1000;
velocity.x -= velocity.x * 10.0 * delta;
velocity.z -= velocity.z * 10.0 * delta;
velocity.y -= 9.8 * 100.0 * delta; // 100.0 = mass
direction.z = Number(moveForward) - Number(moveBackward);
direction.x = Number(moveRight) - Number(moveLeft);
direction.normalize(); // this ensures consistent movements in all directions
if (moveForward || moveBackward) velocity.z -= direction.z * 600.0 * delta;
if (moveLeft || moveRight) velocity.x -= direction.x * 600.0 * delta;
if (onObject === true) {
velocity.y = Math.max(0, velocity.y);
canJump = true;
}
controls.moveRight(- velocity.x * delta);
controls.moveForward(- velocity.z * delta);
controls.getObject().position.y += (velocity.y * delta); // new behavior
if (controls.getObject().position.y < 10) {
velocity.y = 0;
controls.getObject().position.y = 10;
canJump = true;
}
}
prevTime = time;
stats.update();
renderer.render(scene, camera);
}
</script>
</body>
</html>