ThreeJS 和 PhysiJS“Class 构造函数不能在没有 'new' 的情况下被调用

Question

我正在尝试在我的 ThreeJS 项目中实施 PhysiJS。

为了简化我从网上下载了这个项目： https://rawgit.com/mmmovania/Physijs_Tutorials/master/MultipleBoxes.html

我的项目设置在这里可用： https://drive.google.com/drive/folders/1lO-8YQtWkOPDhsEpk1LzuPajoPjsBnyo?usp=sharing

问题当我下载了所有文件 (html, js) 后，我尝试运行它。当它来自我的计算机运行时，我收到一条错误消息。

我对 JavaScript 还是很陌生，我有点了解问题所在，但不确定如何解决。我错过了什么？它在我的电脑上和在网络上是完全相同的项目。

这是错误：

**three.js:34977 THREE.Quaternion: .inverse() has been renamed to invert().

Quaternion.inverse @ three.js:34977
physi.js:391 Uncaught TypeError: Class constructor Scene cannot be invoked without 'new'
    at new window.Physijs.Physijs.Scene (physi.js:391)
    at init (MultipleBoxes.html:71)
    at MultipleBoxes.html:51**

Answer 1

将 init() 更改为 window.onload = init(); 以使脚本文件有机会在 init() 之前完全加载。

'use strict';


var initScene, render, renderer, scene, camera, box, floor;
var container;
var camera, scene, controls, renderer;
var mouseX = 0,
  mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var clock;

var NUM_BOXES = 10;

// always wait for all scripts to load before doing assignments
window.onload = function() {
  init();
  animate();
}



function init() {


  // initialize your script and set assignments
  Physijs.scripts.worker = 'js/physijs_worker.js';
  Physijs.scripts.ammo = 'ammo.js';

  clock = new THREE.Clock();


  container = document.createElement('div');
  document.body.appendChild(container);

  camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 10000);

  camera.position.z = 20;
  camera.position.y = 5;

  controls = new THREE.OrbitControls(camera);


  // scene

  //scene = new THREE.Scene();
  scene = new Physijs.Scene;
  scene.setGravity(new THREE.Vector3(0, -10, 0));

  //floor
  floor = new Physijs.BoxMesh(
    new THREE.CubeGeometry(20, 0.1, 20),
    new THREE.MeshPhongMaterial({
      color: 0xffffff
    }),
    0 //mass
  );
  floor.receiveShadow = true;
  floor.position.set(0, 0, 0);
  scene.add(floor);


  var loader = new THREE.ImageLoader(manager);
  var crateTexture = new THREE.Texture();

  loader.load('textures/crate.jpg', function(image) {
    crateTexture.image = image;
    crateTexture.needsUpdate = true;
  });

  // Box
  var boxGeometry = new THREE.CubeGeometry(1, 1, 1);
  var boxMaterial = new THREE.MeshPhongMaterial({
    color: 0xffffff,
    map: crateTexture
  });

  for (var i = 0; i < NUM_BOXES; ++i) {
    var box = new Physijs.BoxMesh(boxGeometry, boxMaterial);
    box.castShadow = true;
    box.position.y = 10 + 2 * i;
    scene.add(box);
  }


  var manager = new THREE.LoadingManager();
  manager.onProgress = function(item, loaded, total) {
    console.log(item, loaded, total);
  };


  var ambientLight = new THREE.AmbientLight(0x707070);
  scene.add(ambientLight);

  var light = new THREE.DirectionalLight(0xffffff, 1);
  light.position.set(-10, 18, 5);
  light.castShadow = true;
  var d = 14;
  light.shadow.camera.left = -d;
  light.shadow.camera.right = d;
  light.shadow.camera.top = d;
  light.shadow.camera.bottom = -d;

  light.shadow.camera.near = 2;
  light.shadow.camera.far = 50;

  light.shadow.mapSize.x = 1024;
  light.shadow.mapSize.y = 1024;

  scene.add(light);

  //

  renderer = new THREE.WebGLRenderer();
  renderer.setPixelRatio(window.devicePixelRatio);
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.shadowMap.enabled = true;
  container.appendChild(renderer.domElement);

  container.appendChild(renderer.domElement);

  document.addEventListener('mousemove', onDocumentMouseMove, false);
  window.addEventListener('resize', onWindowResize, false);

}

function onWindowResize() {

  windowHalfX = window.innerWidth / 2;
  windowHalfY = window.innerHeight / 2;

  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();

  renderer.setSize(window.innerWidth, window.innerHeight);

}

function onDocumentMouseMove(event) {

  mouseX = (event.clientX - windowHalfX) / 2;
  mouseY = (event.clientY - windowHalfY) / 2;

}

//

function animate() {

  requestAnimationFrame(animate);
  render();

}

function render() {
  var deltaTime = clock.getDelta();
  controls.update(deltaTime);
  scene.simulate(); // run physics

  camera.lookAt(scene.position);

  renderer.render(scene, camera);

}

body {
  font-family: Monospace;
  background-color: #000;
  color: #fff;
  margin: 0px;
  overflow: hidden;
}

#info {
  color: #fff;
  position: absolute;
  top: 10px;
  width: 100%;
  text-align: center;
  z-index: 100;
  display: block;
}

#info a,
.button {
  color: #f00;
  font-weight: bold;
  text-decoration: underline;
  cursor: pointer
}

<!DOCTYPE html>
<html lang="en">

<head>
  <title>Physijs + THREE.js = Multiple Boxes Demo</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
  <style>
    /* moved to separate box for Whosebug answer 
   (see CSS box)
  */
  </style>
</head>

<body>

  <script src="js/three.js"></script>
  <script type="text/javascript" src="js/physi.js"></script>
  <script src="js/controls/OrbitControls.js"></script>

  <script>
    /* moved to javascript box */
  </script>

</body>

</html>

ThreeJS 和 PhysiJS“Class 构造函数不能在没有 'new' 的情况下被调用

ThreeJS and PhysiJS "Class constructor cannot be invoked without 'new'

javascript

class

constructor

physijs