Routines
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52958: Process Room Display Parameter
Used by the routines at ProcessScriptDisplay, ShowRoomDescription, 52671, 52760, HandleRoomDisplay and RunSimpleAction.
Resolves special parameter values used in room display scripts to actual game values (current room, character ID, location value).
Input
A Parameter value (245-253 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 when the parameter is at least 254.
52963 RET NC
52964 CP 250 Jump ahead to ProcessRoomDisplayParameter_CheckCharacterID if the room is not 250.
52966 JR NZ,ProcessRoomDisplayParameter_CheckCharacterID
52968 LD A,(40918) Read the room id at CurrentRoom_ID into A.
52971 RET Return.
A parameter of 251 is the character being processed.
ProcessRoomDisplayParameter_CheckCharacterID 52972 CP 251 Go to ProcessRoomDisplayParameter_GetLocationValue when the parameter is not the current character (251).
52974 JR NZ,ProcessRoomDisplayParameter_GetLocationValue
52976 LD A,(41014) Load the character being processed.
52979 RET Return.
A parameter of 252 is the high byte of the location value.
ProcessRoomDisplayParameter_GetLocationValue 52980 CP 252 Compare the parameter with 252 and load the high byte of the location value at LocationValue.
52982 LD A,(40920)
52985 RET Z Return if it is 252.
52986 LD A,(40919) Read the location value at LocationValue.
52989 RET Return.
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