Routines
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42644: Check Room Objects
Used by the routine at Handler_RoomExits.
Input
A Room number
Output
A 0 or 1 if objects are found or not
CheckRoomObjects 42644 LD HL,40840 HL=Table_ItemLocations.
42647 LD BC,(48071) BC=*Count_Objects_1.
CheckRoomObjects_Loop 42651 CPIR Search for the room number in the table.
42653 RET NZ Return if no objects are found.
42654 PUSH HL Stash the object location table pointer on the stack.
42655 CALL ValidateObject Call ValidateObject.
42658 POP HL Restore the object location table pointer from the stack.
42659 JR NZ,NoRoomObjectsFound Jump to NoRoomObjectsFound if there are no objects found here.
42661 LD E,A Temporarily store A in E.
42662 LD A,B Are there more objects to check?
42663 OR C
42664 LD A,E Restore the A register.
42665 JR NZ,CheckRoomObjects_Loop Jump to CheckRoomObjects_Loop if there are more objects to check.
Set the "successful" output.
42667 LD A,1 Set A to 1 to indicate that objects were found.
42669 AND A Set flags.
42670 RET Return.
Set the "failure" output.
NoRoomObjectsFound 42671 XOR A Set A to 0 to indicate that no objects were found.
42672 RET Return.
View the equivalent code in;
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