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Lt. Commander
Join Date: Dec 2007
Posts: 120
# 6
04-11-2011, 03:44 PM
While you can't make a contact disappear, you can box in a hostile npc with invisible walls. They won't try to attack through invisible walls. Try building a box around the hostile version of the npc, then set up a trigger to make those walls disappear when you want them to attack.