| Routines

62216: Deal with Sam when he has knocked on or is opening a door

Used by the routine at 29912 when bit 6 at 32764 is set (by the routine at 62192), indicating that Sam has knocked on or is opening a door.
Input
H | 230 (Sam)
62216 | XOR A | Clear Sam's status flags at 32764
62217 | LD (32764),A
62220 | PUSH HL | Save Sam's character number (in H) briefly
62221 | CALL 60179 | Obtain descriptors for Sam's current location
62224 | POP HL | Restore Sam's character number to H
62225 | CP 4 | Is Sam standing behind or in front of a closed door?
62227 | JR NZ,62244 | Jump if not
62229 | LD L,4 | Point HL at byte 4 of Sam's buffer
62231 | BIT 0,(HL) | Is Sam indoors?
62233 | JR NZ,62247 | Jump if so
62235 | CALL 62120 | Open the door if Sam has the key, or signal that he has knocked on the door
62238 | JR 62244 |
62240 | EX DE,HL | These three instructions are never executed; but if the relative jump above were made only when the carry flag is reset (meaning Sam has opened the door), these instructions would set bit 5 of the door knock status flags for the door (see 32682)
62241 | SET 5,(HL)
62243 | EX DE,HL
62244 | JP 60539 | Lower Sam's arm and make a sound effect
Sam is standing behind a closed door.
62247 | CALL 60539 | Lower Sam's arm and make a sound effect
62250 | LD H,230 | 230=Sam
This entry point is used by the routines at 62976 and 63423.
62252 | LD D,H | D=character number
62253 | CALL 62099 | Check whether the door is open
62256 | EX DE,HL | Restore the character number to H
62257 | RET NZ | Return if the door is open
62258 | EX DE,HL | Point HL at the door status flags
62259 | JP 62131 | Open the door