The Delaware and the Ben Franklin Bridge beckon beyond the big plate-glass windows in back, where a duo in the corner plays Todd Rundgren, but only a lonely blonde bartender is gazing in that direction. A vast room of pinball alleys - although they are really slots, of course, with a little blackjack, three-card poker, craps, and baccarat thrown in. Willie Nelson, dance music, and White Christmas slap each other around. A dump of light and noise, drunk girls in hot pants and halters. Inside, SugarHouse looks like all casinos. And that’s about right, once you’re inside. You take a gander at SugarHouse from Delaware Avenue, you practically think it’s a happenin’ place.