PORTLAND — Last week, LaMarcus Aldridge said that the Trail Blazers have been stuck in a “horror movie” because of their perpetual string of injuries. Candid quote, but he got the genre wrong. These past few games have been more like science fiction — really, it just doesn’t seem possible. The Blazers extended their winning streak to five on a night when Andre Miller left the game after three minutes due to gastroenteritis. They moved to five games over .500 Saturday despite being without their starting center for the past three games and last year’s leading scorer for the past 19. They beat Indiana 97-92 after trailing by 16 points in the second quarter and playing more than half the game without a true point guard or center. So either Portland (25-20) has become the most resilient in team in the NBA … or the Force is with it.“It gets tough, I’m not going to lie. Emotionally, I’m not trying to get sensitive, but every time you suit up and you hear a key guy isn’t playing it’s like ‘what are we going to do now?’ ” said Aldridge. “But guys keep stepping up. Seems like every week we’re talking, ‘how’d you do it again? This guy’s not in.’ It’s nothing new. Guys keep stepping up.” Whether it’s throwing a dart or drawing out of a hat, Blazers tradition these days seems to consist of Aldridge choosing a teammate or two to join him for four quarters of excellence.