Routines
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53815: Fetch Object Data Pointer
Used by the routines at ActionMoveMrsJones, PlaceCharacterBesideMatch, SetObjectHeldMark, ClearObjectHeldMark, CharacterAction_BasilPhipps, CheckObjectInCharacterLocation, ReadSherlocksDisguise, PointToObjectAttributeByte, UseObjectDisplayLink, InspectActionTakenFlag, ReadObjectAttribute_LooksObjectFolds, CheckObjectLocationMatch, GetObjectLocation, CheckObjectMother, GetObjectAttribute, GetObjectMotherID, TestObjectHasSpecialDescription, ProcessObjectAttribute_LookObjectRun, SetObjectPointers, ReadCharacterTimetable, ProcessCharacterDisplay_TestDisplayFlagEnd, DescribeCurrentRoom, LookUpObjectAndTestMovedMarker, GetObjectFirstLocation, PrintObjectDescription, PrintLocationExits, StoreMatchedCharacterRoom, DescribeObjectIfPresent, PrintObjectDescriptionText, SpecialCaseObject_LooksBasilPhipps, PlaceCharacter, ReadSourceDisplayPointer, LookUpCurrentObject, ScanObjects and UpdateObjectLocation.
Looks up an object in the objects table and returns a pointer to it's data structure.
Input
A Object ID
Output
IX Pointer to object data
FetchObjectDataPointer 53815 LD IX,35695 Call SearchThreeByteTable to search three-byte length table.
53819 CALL SearchThreeByteTable
This will be restored back into HL by the end of the routine.
53822 PUSH HL Read the moved marker and read the location, saving pointer.
Pretty clever way of using the stack here.
53823 LD L,(IX+1)
53826 LD H,(IX+2)
53829 EX (SP),HL Swap the *SP with the object pointer, restoring HL to the original value.
53830 POP IX Restore the saved character record from the stack.
53832 RET Return.
View the equivalent code in;
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