setInteractiveCandidateHandler(callback, context)
Adds a callback that is fired every time Pointer.processInteractiveObjects is called.The purpose of processInteractiveObjects is to work out which Game Object the Pointer is going tointeract with. It works by polling all of the valid game objects, and then slowly discounting thosethat don't meet the criteria (i.e. they aren't under the Pointer, are disabled, invisible, etc). Eventually a short-list of 'candidates' is created. These are all of