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Routines |
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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.
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62247 | CALL 60539 | Lower Sam's arm and make a sound effect | ||
62250 | LD H,230 | 230=Sam | ||
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 |
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