Routines
Prev: 50563 Up: Map Next: 50684
50577: Process Display Record From Script
Used by the routine at ReadCharactersRoom.
HL points at a display record. Copies the low nibbles of its flags and value byte to DisplayMode/40976, clears 40971 and checks the record against the current room before drawing it.
ProcessDisplayRecordFromScript 50577 PUSH HL Point IX at the record and copy the low nibble of its flags to DisplayMode via CopyRecordFlagNibble.
50578 POP IX
50580 CALL CopyRecordFlagNibble
50583 CALL CopyRecordValueNibble Copy the low nibble of the value byte via CopyRecordValueNibble.
50586 XOR A Clear the parser.
50587 LD (40971),A
50590 LD A,(40975)
50593 LD HL,40976 Take the display mode.
50596 OR (HL) Merge the flag at 40976, and go to ProcessDisplayRecordFromScript_RunObjectDisplay when both flags are clear.
50597 JR Z,ProcessDisplayRecordFromScript_RunObjectDisplay
50599 LD A,(40975) Jump to ProcessDisplayRecordFromScript_CompareRoom if the display mode is 5.
50602 CP 5
50604 JR Z,ProcessDisplayRecordFromScript_CompareRoom
50606 CP 6 Jump ahead to ProcessDisplayRecordFromScript_DisplayMode if the display mode is not 6.
50608 JR NZ,ProcessDisplayRecordFromScript_DisplayMode
ProcessDisplayRecordFromScript_CompareRoom 50610 LD A,(41012) Jump to DispatchLookedUpHandlerThird_0 if the room display parameter is not 254.
50613 CP 254
50615 JP NZ,DispatchLookedUpHandlerThird_0
ProcessDisplayRecordFromScript_DisplayMode 50618 LD A,(40976) Jump to ProcessDisplayRecordFromScript_TestGraphics if the display mode is 5.
50621 CP 5
50623 JR Z,ProcessDisplayRecordFromScript_TestGraphics
50625 CP 6 Jump ahead to ProcessDisplayRecordFromScript_DisplayModeZero if the display mode is not 6.
50627 JR NZ,ProcessDisplayRecordFromScript_DisplayModeZero
ProcessDisplayRecordFromScript_TestGraphics 50629 LD A,(41013) Jump to DispatchLookedUpHandlerThird_0 if the room graphics parameter is not 254.
50632 CP 254
50634 JP NZ,DispatchLookedUpHandlerThird_0
ProcessDisplayRecordFromScript_DisplayModeZero 50637 LD A,(40975) Jump to ProcessDisplayRecordFromScript_AcceptGraphics if the display mode is zero.
50640 AND A
50641 JR Z,ProcessDisplayRecordFromScript_AcceptGraphics
50643 LD A,(41012) Jump to ProcessDisplayRecordFromScript_AcceptGraphics if the room display parameter is not 255.
50646 CP 255
50648 JR NZ,ProcessDisplayRecordFromScript_AcceptGraphics
50650 LD B,0 Start the picture count at zero.
ProcessDisplayRecordFromScript_TestDisplay 50652 CALL ReadDisplayModeForPicture Return if the count has reached the graphics limit.
50655 RET Z
50656 LD (41012),A Store it in the room display parameter, then call RecordResultRoomGraphics_ClearHighByte to run display action.
50659 CALL RecordResultRoomGraphics_ClearHighByte
50662 JR NZ,ProcessDisplayRecordFromScript_RunObjectDisplay Go to ProcessDisplayRecordFromScript_RunObjectDisplay if RecordResultRoomGraphics_ClearHighByte found a picture.
50664 INC B Try the next display value from ProcessDisplayRecordFromScript_TestDisplay.
50665 JR ProcessDisplayRecordFromScript_TestDisplay
Accept a set graphics parameter, and return when it is empty.
ProcessDisplayRecordFromScript_AcceptGraphics 50667 CALL AcceptSetGraphicsParameter Go to ProcessDisplayRecordFromScript_RunObjectDisplay if the set graphics parameter is not accepted.
50670 JR Z,ProcessDisplayRecordFromScript_RunObjectDisplay
50672 CALL RecordResultRoomGraphics_CountGraphicsSteps Return if the graphics count has reached its limit.
50675 RET Z
ProcessDisplayRecordFromScript_RunObjectDisplay 50676 LD A,1 Set the parser flag at 40971 to 1 and continue at ProcessObjectDisplayWithPointer.
50678 LD (40971),A
50681 JP ProcessObjectDisplayWithPointer
Prev: 50563 Up: Map Next: 50684