X jumps. It also interacts. Square isn't used for interacting because it's the walk button. There's a walk button. L3 or Circle sprint. Unless you're on a chocobo in which case Square sprints. R3 opens the map. In the Regalia R3 doesn't do anything and the touchpad opens the map. Dpad Up starts the radio. L2+Dpad Up starts the MP3 Player. Dpad Up otherwise does nothing useful outside the car unless in combat in which case L2+Dpad Up does nothing. Circle automatically walks to points of interaction. I'm not sure why but it does. L1 and R1 are used for the Armiger but can be hard to use because both buttons need quick execution on time with each other and can't be held. Summoning gets its own dedicated button on L2 despite needing several seconds of holding to perform.