Routines
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44886: Validate Object
Used by the routines at PrintObjects and CheckRoomObjects.
Input
BC Object counter
Output
F Z is unset if the object is valid, unset when invalid
ValidateObject 44886 PUSH AF Stash AF and BC on the stack.
44887 PUSH BC
44888 INC BC Adjust the object counter.
44889 LD A,(42982) A=*Count_Objects.
44892 SUB C Calculate the index and store the result in E.
44893 LD E,A
44894 LD IX,(42956) IX=*Pointer_ItemDescriptions.
44898 CALL GetTableEntry Call GetTableEntry.
44901 POP BC Restore the object counter from the stack.
44902 LD A,H Jump to InvalidObject if the object is invalid.
44903 OR L
44904 JR Z,InvalidObject
44906 POP AF Restore the object type from the stack.
44907 AND A Clear the Z flag.
44908 RET Return.
InvalidObject 44909 POP AF Restore AF from the stack.
44910 CP A Set the Z flag.
44911 RET Return.
View the equivalent code in The Jewels Of Babylon.
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