tilemap collision resolution should preserve quadtree A-B list parity…

… and parameter order now

org/flixel/FlxObject.as

@@ -906,7 +906,7 @@ package org.flixel
  if(Object1 is FlxTilemap)
  return (Object1 as FlxTilemap).overlapsWithCallback(Object2,separateX);
  if(Object2 is FlxTilemap)
- return (Object2 as FlxTilemap).overlapsWithCallback(Object1,separateX);
+ return (Object2 as FlxTilemap).overlapsWithCallback(Object1,separateX,true);
 
  //First, get the two object deltas
  var overlap:Number = 0;
@@ -1005,7 +1005,7 @@ package org.flixel
  if(Object1 is FlxTilemap)
  return (Object1 as FlxTilemap).overlapsWithCallback(Object2,separateY);
  if(Object2 is FlxTilemap)
- return (Object2 as FlxTilemap).overlapsWithCallback(Object1,separateY);
+ return (Object2 as FlxTilemap).overlapsWithCallback(Object1,separateY,true);
 
  //First, get the two object deltas
  var overlap:Number = 0;

org/flixel/FlxParticle.as

@@ -20,6 +20,13 @@ package org.flixel
  */
  public var lifespan:Number;
 
+ /**
+ * Determines how quickly the particles come to rest on the ground.
+ * Only used if the particle has gravity-like acceleration applied.
+ * @default 500
+ */
+ public var friction:Number;
+
  /**
  * Instantiate a new particle. Like <code>FlxSprite</code>, all meaningful creation
  * happens during <code>loadGraphic()</code> or <code>makeGraphic()</code> or whatever.
@@ -28,6 +35,7 @@ package org.flixel
  {
  super();
  lifespan = 0;
+ friction = 500;
  }
 
  /**
@@ -47,17 +55,17 @@ package org.flixel
  if(touching)
  {
  if(angularVelocity != 0)
- angularVelocity = -angularVelocity * elasticity;
+ angularVelocity = -angularVelocity;
  }
  if(acceleration.y > 0) //special behavior for particles with gravity
  {
  if(touching & FLOOR)
  {
- drag.x = 200;
+ drag.x = friction;
 
  if(!(wasTouching & FLOOR))
  {
- if(velocity.y < -elasticity*100)
+ if(velocity.y < -elasticity*10)
  {
  if(angularVelocity != 0)
  angularVelocity *= -elasticity;
@@ -75,7 +83,6 @@ package org.flixel
  return;
  }
 
-
  /**
  * Triggered whenever this object is launched by a <code>FlxEmitter</code>.
  * You can override this to add custom behavior like a sound or AI or something.

org/flixel/FlxTilemap.as

@@ -803,12 +803,13 @@ package org.flixel
  * and calls the specified callback function (if there is one).
  * Also calls the tile's registered callback if the filter matches.
  * 
- * @param Object The <code>FlxObject</code> you are checking for overlaps against.
- * @param Callback An optional function that takes the form "myCallback(Object1:FlxObject,Object2:FlxObject)", where one object is the object passed in in the first parameter, and the other is the relevant FlxTile from _tileObjects.
+ * @param Object The <code>FlxObject</code> you are checking for overlaps against.
+ * @param Callback An optional function that takes the form "myCallback(Object1:FlxObject,Object2:FlxObject)", where Object1 is a FlxTile object, and Object2 is the object passed in in the first parameter of this method.
+ * @param FlipCallbackParams Used to preserve A-B list ordering from FlxObject.separate() - returns the FlxTile object as the second parameter instead.
  * 
  * @return Whether there were overlaps, or if a callback was specified, whatever the return value of the callback was.
  */
- public function overlapsWithCallback(Object:FlxObject,Callback:Function=null):Boolean
+ public function overlapsWithCallback(Object:FlxObject,Callback:Function=null,FlipCallbackParams:Boolean=false):Boolean
  {
  var results:Boolean = false;
 
@@ -850,7 +851,12 @@ package org.flixel
  tile.last.x = tile.x - deltaX;
  tile.last.y = tile.y - deltaY;
  if(Callback != null)
- overlapFound = Callback(Object,tile);
+ {
+ if(FlipCallbackParams)
+ overlapFound = Callback(Object,tile);
+ else
+ Callback(tile,Object);
+ }
  else
  overlapFound = (Object.x + Object.width > tile.x) && (Object.x < tile.x + tile.width) && (Object.y + Object.height > tile.y) && (Object.y < tile.y + tile.height);
  if(overlapFound)