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9-25-2009 @ 4:28PM
@BullseyedI'd guess that they're both correct. Code-wise, the function would look something like:PersonA.CanSee(PersonB)(or NPC, or whatever.) In the initial version of WoW, this would return a true or false value based entirely on whether PersonB was stealthed/invisible, combined with a check as to whether PersonA had a 'see invis' ability. During BC, they had a bug, and someone had an idea to use the CanSee function for another purpose to fix it. The results of that were pretty cool, so they expanded it into the whole phasing thing, by not just checking for stealth, but also what quests you're on or have completed. The basic technology WAS there from the beginning, but is now vastly expanded and serving a much larger purpose.
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