getFirstDead(createIfNull, x, y, key, frame) → {DisplayObject}
Get the first child that is dead (child.alive === false). This is handy for checking if everything has been wiped out and adding to the pool as needed. You can use the optional argument createIfNull to create a new Game Object if no dead ones were found in this Group. It works by calling Group.create passing it the parameters given to this method, and returning the new child. If a child was found , createIfNull is false and you pr