NEW ORLEANS – Two nights before Saturday’s Slam Dunk Contest, in a mostly empty Smoothie King Center crawling with overzealous security guards, Aaron Gordon tested his secret weapon. As NBA executive Kiki VanDeWeghe, former Dunk Contest champion Brent Barry and a small group of onlookers watched, the 21-year-old forward pantomimed his interplay with the Magic’s mascot, smoke billowed off the stage, and the Star Wars theme song kicked in. Then, a custom-build drone, managed by a team of six from Intel, lit up, rose above the hardwood, motored into position, and dropped an alley-oop pass to a waiting Gordon, who passed the ball between his legs and pounded the rim with a right-handed dunk.