Routines
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46359: Check And Process Objects
Used by the routine at CheckFlagAndSetDisplay_ProcessPointer.
Returns when the display flag at 40988 is zero. Otherwise walks the character's objects and returns non-zero when one matches the room display parameter.
CheckFlagAndSetDisplay_CheckObjects 46359 LD A,(40988) Return if the display flag (40988) is zero.
46362 AND A
46363 RET Z
46364 PUSH IY Keep the character record.
46366 PUSH DE
46367 PUSH IX
CheckFlagAndSetDisplay_ObjectLoop 46369 CALL FollowCharacterLink Call FollowCharacterLink to follow the character link.
46372 BIT 6,(IY+1) See whether bit 6 of the schedule entry is clear.
46376 JR Z,CheckFlagAndSetDisplay_RestoreAndReturn Jump ahead to CheckFlagAndSetDisplay_RestoreAndReturn if bit 6 of the schedule entry is clear.
46378 CALL AdjustObjectTableForSum Call AdjustObjectTableForSum to adjust the object table for this room.
CheckFlagAndSetDisplay_ProcessObject 46381 PUSH IY Point HL at byte 8 of the record (IY+8).
46383 POP HL
46384 LD DE,8
46387 ADD HL,DE
46388 CALL ProcessObjectEntry Call ProcessObjectEntry to check the next object.
46391 CP 255 Jump back to CheckFlagAndSetDisplay_ObjectLoop if the entry is the end marker.
46393 JR Z,CheckFlagAndSetDisplay_ObjectLoop
46395 LD HL,41012 Jump back to CheckFlagAndSetDisplay_ProcessObject while the object is not in the room on screen.
46398 CP (HL)
46399 JR NZ,CheckFlagAndSetDisplay_ProcessObject
46401 OR 1 Clear the zero flag to report that an object in the room on screen was found.
CheckFlagAndSetDisplay_RestoreAndReturn 46403 POP IX Restore the saved character record, the saved source and the saved schedule entry from the stack.
46405 POP DE
46406 POP IY
46408 RET Return.
View the equivalent code in;
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