Routines
Prev: 52920 Up: Map Next: 52990
52958: Process Room Display Parameter
Used by the routines at ProcessScriptDisplay, HandleDisplayRoomDescription, HandleRoomDisplay and HandleSimpleAction.
Resolves special parameter values used in room display scripts to actual game values (current room, character ID, location value).
Input
A Parameter value (245-254 are special values)
Output
A Resolved parameter value
ProcessRoomDisplayParameter 52958 CP 245 Return unchanged if the parameter is not a special value (less than 245).
52960 RET C
52961 CP 254 Return unchanged if the parameter is not a special value (greater than 254).
52963 RET NC
52964 CP 250 Jump to ProcessRoomDisplayParameter_CheckCharacterID if not room parameter (250).
52966 JR NZ,ProcessRoomDisplayParameter_CheckCharacterID
52968 LD A,(40918) Return the current room ID (A=*CurrentRoom_ID).
52971 RET
ProcessRoomDisplayParameter_CheckCharacterID 52972 CP 251 Jump to ProcessRoomDisplayParameter_GetLocationValue if not character ID parameter (251).
52974 JR NZ,ProcessRoomDisplayParameter_GetLocationValue
52976 LD A,(41014) Return the current character ID (A=*CurrentCharacter_ID).
52979 RET
ProcessRoomDisplayParameter_GetLocationValue 52980 CP 252 Return the location value (high byte) if parameter is 252 otherwise return the location value (low byte).
52982 LD A,(40920)
52985 RET Z
52986 LD A,(40919)
52989 RET
Prev: 52920 Up: Map Next: 52990