Routines
Prev: 50214 Up: Map Next: 50262
50233: 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 50233 LD HL,48112 HL=Table_ItemLocations.
50236 LD BC,(48424) BC=*Count_Items.
CheckRoomObjects_Loop 50240 CPIR Search for the room number in the table.
50242 RET NZ Return if no objects are found.
50243 PUSH HL Stash the object location table pointer on the stack.
50244 CALL ValidateObject Call ValidateObject.
50247 POP HL Restore the object location table pointer from the stack.
50248 JR NZ,NoRoomObjectsFound Jump to NoRoomObjectsFound if there are no objects found here.
50250 LD E,A Temporarily store A in E.
50251 LD A,B Are there more objects to check?
50252 OR C
50253 LD A,E Restore the A register.
50254 JR NZ,CheckRoomObjects_Loop Jump to CheckRoomObjects_Loop if there are more objects to check.
Set the "successful" output.
50256 LD A,1 Set A to 1 to indicate that objects were found.
50258 AND A Set flags.
50259 RET Return.
Set the "failure" output.
NoRoomObjectsFound 50260 XOR A Set A to 0 to indicate that no objects were found.
50261 RET Return.
Prev: 50214 Up: Map Next: 50262