native_client_sdk/src/gonacl_appengine/static/bullet/NaClAMBullet.js

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 function NaClAMBulletInit() {
   6   aM.addEventListener('sceneloaded', NaClAMBulletSceneLoadedHandler);
   7   aM.addEventListener('noscene', NaClAMBulletStepSceneHandler);
   8   aM.addEventListener('sceneupdate', NaClAMBulletStepSceneHandler);
   9 }
  10
  11 function NaClAMBulletLoadScene(sceneDescription) {
  12   aM.sendMessage('loadscene', sceneDescription);
  13 }
  14
  15 function NaClAMBulletSceneLoadedHandler(msg) {
  16   console.log('Scene loaded.');
  17   console.log('Scene object count = ' + msg.header.sceneobjectcount);
  18 }
  19
  20 function NaClAMBulletPickObject(objectTableIndex, cameraPos, hitPos) {
  21   aM.sendMessage('pickobject', {index: objectTableIndex, cpos: [cameraPos.x, cameraPos.y, cameraPos.z], pos: [hitPos.x,hitPos.y,hitPos.z]});
  22 }
  23
  24 function NaClAMBulletDropObject() {
  25   aM.sendMessage('dropobject', {});
  26 }
  27
  28 // Values used to display simulation time every second.
  29 var fps = {
  30   lastTimeMs: +new Date(),
  31   sumSimTime: 0,
  32   numSteps: 0
  33 };
  34
  35 function NaClAMBulletStepSceneHandler(msg) {
  36   // Step the scene
  37   var i;
  38   var j;
  39   var numTransforms = 0;
  40   if (msg.header.cmd == 'sceneupdate') {
  41     if (skipSceneUpdates > 0) {
  42       skipSceneUpdates--;
  43       return;
  44     }
  45     TransformBuffer = new Float32Array(msg.frames[0]);
  46     numTransforms = TransformBuffer.length/16;
  47     for (i = 0; i < numTransforms; i++) {
  48       for (j = 0; j < 16; j++) {
  49         objects[i].matrixWorld.elements[j] = TransformBuffer[i*16+j];
  50       }
  51     }
  52
  53     var simTime = msg.header.simtime;
  54     fps.sumSimTime += simTime;
  55     fps.numSteps++;
  56
  57     // Update FPS.
  58     var curTimeMs = +new Date();
  59     if (curTimeMs - fps.lastTimeMs > 1000) {  // 1 sec
  60       var meanSimTime = fps.sumSimTime / fps.numSteps;
  61       $('simulationTime').textContent = meanSimTime.toFixed(0);
  62       $('fps').textContent =
  63           (fps.numSteps * 1000 / (curTimeMs - fps.lastTimeMs)).toFixed(1);
  64       fps.lastTimeMs = curTimeMs;
  65       fps.sumSimTime = 0;
  66       fps.numSteps = 0;
  67     }
  68   }
  69 }