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Routines |
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Used by the routine at CalculateObjectPointerOffset.
Points the object list at this room and remembers the character record in the display pointer.
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Adjust object table for sum.
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| PointObjectListRoom | BDC2 | CALL AdjustObjectTableForSum | Call AdjustObjectTableForSum to point the object list at this room. | |
| BDC5 | LD ($BA13),IX | Store this object pointer at BA13 and at BA13+02. | ||
| BDC9 | LD ($BA15),IX | |||
| BDCD | LD DE,($BA17) | Read the display pointer and point HL at the character pairs at 994D. | ||
| BDD1 | LD HL,$994D | |||
| BDD4 | LD B,$01 | Count 01. | ||
| PointObjectListRoom_Loop | BDD6 | LD A,(HL) | Read the next object-list byte. | |
| BDD7 | INC HL | Advance through the object list. | ||
| BDD8 | OR (HL) | Merge the following object-list byte. | ||
| BDD9 | DEC HL | Step back one byte. | ||
| BDDA | RET Z | Return when this object-list pair is empty. | ||
| BDDB | LD A,E | Jump ahead to PointObjectListRoom_Next if the low byte differs from this object pair. | ||
| BDDC | CP (HL) | |||
| BDDD | JR NZ,PointObjectListRoom_Next | |||
| BDDF | INC HL | Jump ahead to PointObjectListRoom_CountRecordResult if the high byte matches this object pair. | ||
| BDE0 | LD A,D | |||
| BDE1 | CP (HL) | |||
| BDE2 | DEC HL | |||
| BDE3 | JR Z,PointObjectListRoom_CountRecordResult | |||
| PointObjectListRoom_Next | BDE5 | INC HL | Step to the next object pair and go back to PointObjectListRoom_Loop. | |
| BDE6 | INC HL | |||
| BDE7 | INC B | |||
| BDE8 | JR PointObjectListRoom_Loop | |||
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Remember how many objects were listed and read the next one.
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| PointObjectListRoom_CountRecordResult | BDEA | LD A,B | Record the display pointer. | |
| BDEB | LD ($BA1A),A | |||
| BDEE | LD A,$02 | |||
| BDF0 | LD ($A038),A | Store it in the object attribute flag. | ||
| BDF3 | CALL ReadCharacterRecordWord | Call ReadCharacterRecordWord to read the next display object and return when the list has ended. | ||
| BDF6 | CP $FF | |||
| BDF8 | RET Z | |||
| BDF9 | LD ($BA19),A | Call ReadCharacterRecordWord to read the character record from the display link. | ||
| BDFC | CALL ReadCharacterRecordWord | |||
| BDFF | CP $FF | Jump to UseObjectDisplayLink_ConditionHoldsCaller when another display object follows. | ||
| BE01 | JR NZ,UseObjectDisplayLink_ConditionHoldsCaller | |||
| BE03 | LD A,($BA19) | Call UseObjectDisplayLink to copy the object's picture link. | ||
| BE06 | CALL UseObjectDisplayLink | |||
| BE09 | CALL ReadCharacterRecordValue | Call ReadCharacterRecordValue to read the next saved object and return when that list has ended. | ||
| BE0C | CP $FF | |||
| BE0E | RET Z | |||
| BE0F | LD ($BA1B),A | Call ReadCharacterRecordValue to read the character record from the saved value. | ||
| BE12 | CALL ReadCharacterRecordValue | |||
| BE15 | CP $FF | Jump to UseObjectDisplayLink_ConditionHoldsCaller when another saved object follows. | ||
| BE17 | JR NZ,UseObjectDisplayLink_ConditionHoldsCaller | |||
| BE19 | LD A,($BA1B) | Call UseObjectDisplayLink to copy the object's picture link. | ||
| BE1C | CALL UseObjectDisplayLink | |||
| BE1F | OR %00000001 | Reset the zero flag. | ||
| BE21 | RET | Return. | ||
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