added support for multichannel sound + sound volume based on speed on…

… impact

index.html

@@ -214,6 +214,8 @@ <h3>Ouch no WebGL :(</h3>
 
  <script>
  jQuery(function(){
+ // TODO use the threex.embedded for that
+
  // prevent default actions for arrow keys
  // - required if this window.document is embedded in another page as an iframe
  // - it prevent the hosting page to scroll when you use arrows in the game page

js/marble.js

@@ -58,7 +58,11 @@ Marble.Marble.prototype.init = function(opts)
  // - used to have a single contact notification when 2 marbles are in contact
  if( this._marbleId >= otherBody._marbleId ) return;
  //console.log("marlbe", this._marbleId, "collide with", otherBody._marbleId)
- soundPool.get('marbleContact').play();
+ var volume = this.separatingVelocity(otherBody) * 0.8 / Marble.tileSize;
+ volume = Math.min(volume, 1.0);
+ soundPool.get('marbleContact').play({
+ volume : volume
+ });
  });
 
  // apply friction

js/pageGameLife.js

@@ -110,7 +110,7 @@ Marble.PageGameLife.prototype._render = function()
 
  // FIXME this should be INSIDE webgl renderer... bug
  renderer.context.depthMask( true );
- 
+
  // actually display the scene in the Dom element
  renderer.render( scene, gameLevel.camera().object() );
 }

vendor/microphysics.js/codeflow/physics.js

@@ -203,6 +203,32 @@
  this.pz + (this.z - this.pz)*u,
  ]
  },
+ separatingVelocity: function(other){
+ var b1 = this, b2 = other;
+
+ var x = b1.x - b2.x;
+ var y = b1.y - b2.y;
+ var z = b1.z - b2.z;
+ var l = sqrt(x*x + y*y + z*z);
+ var xn = x/l;
+ var yn = y/l;
+ var zn = z/l;
+
+ var v1 = b1.getVelocity();
+ var v2 = b2.getVelocity();
+
+ var vrx = v1[0] - v2[0];
+ var vry = v1[1] - v2[1];
+ var vrz = v1[2] - v2[2];
+
+ var vdotn = vrx*xn + vry*yn + vrz*zn;
+ var xs = vrx*vdotn;
+ var ys = vry*vdotn;
+ var zs = vrz*vdotn;
+ var speed = sqrt(xs*xs + ys*ys + zs*zs);
+
+ return speed;
+ },
  collide: function(other, restitute){
  switch(other.type){
  case AABB: