fix test code

src/engine/camera.js

@@ -9,7 +9,7 @@ const ZFAR = 1000.0
 
 class Camera extends Node {
   constructor (pos, rotation) {
-    super(pos, rotation)
+    super(pos, null, rotation)
     this.fov = FOV
     this.speed = SPEED
     this.sensitivity = SENSITIVTY

src/engine/components/index.js

@@ -1,9 +1,4 @@
-import Resource from '../resource'
 import { mat4, quat, vec3 } from 'gl-matrix'
-import { Mesh } from '../mesh'
-import { Material } from '../mesh/material'
-
-let meshCache = {}
 
 /**
  * Returns an euler angle representation of a quaternion
@@ -48,7 +43,7 @@ class Node {
     // Scaling
     this.scale = scale || [1.0, 1.0, 1.0]
 
-    // Rotation in Euler angles (yaw, pitch, roll) in radians
+    // Rotation in Euler angles (pitch, yaw, roll) in degrees
     this.rotation = rotation || [0.0, 0.0, 0.0]
 
     this.transform = mat4.create()
@@ -60,31 +55,23 @@ class Node {
 
   updateTransform () {
     let matrix = mat4.create()
-
-    // Add parent node's transform
-    if (this.parent) {
-      mat4.mul(matrix, matrix, this.parent.transform)
-    }
-
-    // Set translation
-    mat4.translate(matrix, matrix, this.pos)
+    let rot = quat.create()
 
     // Set rotation
-    if (this.rotation[0] !== 0) {
-      mat4.rotateX(matrix, matrix, this.rotation[0])
+    quat.fromEuler(rot, this.rotation[0], this.rotation[1], this.rotation[2])
+    mat4.fromRotationTranslationScale(matrix, rot, this.pos, this.scale)
+
+    // Add local transform to the global transform, if present
+    // Will be present in loaded models
+    if (this._rootTransform) {
+      mat4.mul(matrix, matrix, this._rootTransform)
     }
 
-    if (this.rotation[1] !== 0) {
-      mat4.rotateY(matrix, matrix, this.rotation[1])
+    // Add parent's transform to this
+    if (this.parent) {
+      mat4.mul(matrix, this.parent.transform, matrix)
     }
 
-    if (this.rotation[2] !== 0) {
-      mat4.rotateZ(matrix, matrix, this.rotation[2])
-    }
-
-    // Set scale
-    mat4.scale(matrix, matrix, this.scale)
-
     // Set the matrix
     this.transform = matrix
 
@@ -96,12 +83,14 @@ class Node {
     }
   }
 
-  setTransformation (transform) {
+  fromLocalTransform (transform) {
     let quaternion = quat.create()
     let translation = vec3.create()
     let rotation = vec3.create()
     let scale = vec3.create()
 
+    mat4.transpose(transform, transform)
+
     mat4.getScaling(scale, transform)
     mat4.getRotation(quaternion, transform)
     mat4.getTranslation(translation, transform)
@@ -187,6 +176,7 @@ class Node {
   }
 }
 
+// A node defining a single mesh
 class MeshInstance extends Node {
   constructor (mesh, pos, scale, rot) {
     super(pos, scale, rot)
@@ -210,6 +200,7 @@ class MeshInstance extends Node {
   }
 }
 
+// A node that contains multiple meshes
 class MultiMeshInstance extends Node {
   constructor (meshes, pos) {
     super(pos)

src/engine/mesh/loader.js

@@ -10,7 +10,7 @@ let meshCache = {}
 
 // Parse an assimp2json formatted mesh file
 // Supports multiple geometries
-async function assimp2json (gl, file, dat, pos) {
+async function assimp2json (gl, file, dat) {
   let cleaned = []
   let materials = []
   for (let mi in dat.meshes) {
@@ -85,6 +85,7 @@ async function assimp2json (gl, file, dat, pos) {
   }
 
   let finished = []
+  let lastTransform = dat.rootnode.transformation
   function setChildren (parent, chMeshes, last) {
     if (!chMeshes.meshes) {
       if (chMeshes.children) {
@@ -100,7 +101,7 @@ async function assimp2json (gl, file, dat, pos) {
 
     let meshIndex = chMeshes.meshes[0]
     let mesh = loadComplete[meshIndex]
-    let meshInstance = new MeshInstance(mesh, parent == null ? pos : null)
+    let meshInstance = new MeshInstance(mesh)
 
     meshInstance.mesh = mesh
 
@@ -114,15 +115,15 @@ async function assimp2json (gl, file, dat, pos) {
     meshInstance.name = chMeshes.name
 
     if (parent == null) {
-      // Multiply the last meshless node's transform in order to preserve it
-
       finished.push(meshInstance)
     } else {
       parent.children.push(meshInstance)
       meshInstance.parent = parent
     }
 
-    meshInstance.setTransformation(transform)
+    mat4.transpose(transform, transform)
+    meshInstance._rootTransform = transform
+    meshInstance.updateTransform()
   }
 
   setChildren(null, dat.rootnode)
@@ -135,6 +136,9 @@ async function assimp2json (gl, file, dat, pos) {
   let returnType
   if (finished.length > 1) {
     returnType = new MultiMeshInstance(finished)
+    mat4.transpose(lastTransform, lastTransform)
+    returnType._rootTransform = lastTransform
+    returnType.updateTransform()
   } else {
     returnType = finished[0]
   }
@@ -143,22 +147,22 @@ async function assimp2json (gl, file, dat, pos) {
 }
 
 // Parse a collada mesh
-async function collada (gl, file, dat, pos) {
+async function collada (gl, file, dat) {
   // TODO...
 }
 
-async function loadMesh (gl, file, pos) {
+async function loadMesh (gl, file) {
   file = '/assets/models/' + file + '.json'
 
   // Ensure each mesh file is loaded only once
-  if (meshCache[file]) return meshCache[file].length > 1 ? new MultiMeshInstance(meshCache[file], pos) : meshCache[file][0]
+  if (meshCache[file]) return meshCache[file].length > 1 ? new MultiMeshInstance(meshCache[file]) : meshCache[file][0]
 
   let dat = await Resource.GET({ type: 'json', url: file })
 
   // Recognize a assimp2json file format
   if (dat['__metadata__'] && dat['__metadata__'].format === 'assimp2json') {
     if (!dat.meshes) throw new Error('No geometries found in file ' + file)
-    return assimp2json(gl, file, dat, pos)
+    return assimp2json(gl, file, dat)
   }
 
   throw new Error('Unsupported mesh format.')

src/index.js

@@ -7,19 +7,16 @@ import { Terrain } from './engine/components/terrain'
 import { SimplexHeightMap } from './engine/components/terrain/heightmap'
 import { Material } from './engine/mesh/material'
 
-// import { glMatrix } from 'gl-matrix'
-
 let game = new Engine()
 let env = new Environment()
 
+let t = 0
 async function pipeline () {
-  let entity = await loadMesh(game.gl, 'test', [0.0, 0.0, 0.0])
+  let entity = await loadMesh(game.gl, 'test')
   let shader = await game.shaders.createShaderFromFiles(game.gl, 'basic', false)
   let terrainShader = await game.shaders.createShaderFromFiles(game.gl, 'terrain', false)
 
-  console.log(entity)
-
-  // entity.setRotation([glMatrix.toRadian(-90), 0.0, 0.0])
+  entity.setRotation([0.0, 0.0, -90.0])
 
   // Create a height map based on OpenSimplex noise
   let hmap = new SimplexHeightMap(1, 1, 256, 50)
@@ -55,6 +52,10 @@ async function pipeline () {
     if (game.input.mouseMoved && game.input.mouse.btn0) {
       cam.processMouseMove(game.input.mouseOffset)
     }
+
+    // TESTING: Move model forward
+    t = t + 0.1
+    entity.setPosition([t, 0.0, 0.0])
   })
 
   // Render function for the triangle
@@ -79,6 +80,7 @@ async function pipeline () {
   game.startGameLoop()
 }
 
+// Start the game, catch any errors thrown
 pipeline().catch(function (e) {
   console.error(e)
 })

webpack.config.js

@@ -1,28 +1,30 @@
 const path = require('path')
 const HtmlWebpackPlugin = require('html-webpack-plugin')
 
-module.exports = {
-  entry: './src/index.js',
-  output: {
-    path: path.resolve(__dirname, 'dist'),
-    filename: 'app.js'
-  },
-  module: {
-    rules: [
-      {
-        test: /\.js$/,
-        exclude: /(node_modules)/,
-        use: {
-          loader: 'babel-loader',
-          options: {
-            presets: ['@babel/preset-env']
+module.exports = (env) => {
+  return {
+    entry: './src/index.js',
+    output: {
+      path: path.resolve(__dirname, 'dist'),
+      filename: 'app.js'
+    },
+    module: {
+      rules: [
+        {
+          test: /\.js$/,
+          exclude: /(node_modules)/,
+          use: {
+            loader: 'babel-loader',
+            options: {
+              presets: ['@babel/preset-env']
+            }
           }
         }
-      }
+      ]
+    },
+    devtool: env.mode === 'development' ? 'inline-source-map' : '',
+    plugins: [
+      new HtmlWebpackPlugin({ template: 'index.html' })
     ]
-  },
-  devtool: 'inline-source-map',
-  plugins: [
-    new HtmlWebpackPlugin({ template: 'index.html' })
-  ]
+  }
 }