Routines
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CEDE: 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 (F5-FE are special values)
Output
A Resolved parameter value
ProcessRoomDisplayParameter CEDE CP $F5 Return unchanged if the parameter is not a special value (less than F5).
CEE0 RET C
CEE1 CP $FE Return unchanged if the parameter is not a special value (greater than FE).
CEE3 RET NC
CEE4 CP $FA Jump to ProcessRoomDisplayParameter_CheckCharacterID if not room parameter (FA).
CEE6 JR NZ,ProcessRoomDisplayParameter_CheckCharacterID
CEE8 LD A,($9FD6) Return the current room ID (A=*CurrentRoom_ID).
CEEB RET
ProcessRoomDisplayParameter_CheckCharacterID CEEC CP $FB Jump to ProcessRoomDisplayParameter_GetLocationValue if not character ID parameter (FB).
CEEE JR NZ,ProcessRoomDisplayParameter_GetLocationValue
CEF0 LD A,($A036) Return the current character ID (A=*CurrentCharacter_ID).
CEF3 RET
ProcessRoomDisplayParameter_GetLocationValue CEF4 CP $FC Return the location value (high byte) if parameter is FC otherwise return the location value (low byte).
CEF6 LD A,($9FD8)
CEF9 RET Z
CEFA LD A,($9FD7)
CEFD RET
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