| Routines

31723: Update the SRB for ERIC or his pellet and scroll the screen if necessary

Used by the routine at 29194. Updates the screen refresh buffer (SRB) for ERIC's new animatory state and location when he's riding the bike, or ERIC's pellet's new location as it flies through the air.
Input
A | ERIC's/pellet's new animatory state
D | ERIC's/pellet's new y-coordinate
E | ERIC's/pellet's new x-coordinate
H | Character number: 210 (ERIC) or 214 (ERIC's pellet)
31723 | CALL 24880 | Update the animatory state and location of ERIC or his pellet and update the SRB
31726 | LD A,H | A=character number
31727 | CP 210 | Is this ERIC?
31729 | RET NZ | Return if not
31730 | JP 28178 | Scroll the screen if necessary