Routines
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46505: Add Points To Score
Used by the routines at HandlerAmuletPiece, CollectPickup and AwardActorPoints.
Adds points to the score of the active player. The scores are held as three bytes, each with two BCD digits. The new score is then printed by Score_1UP.
Before
add-points-before
After AddPointsToScore
add-points-after
Input
BC Points to add to score
Check the active player.
AddPointsToScore 46505 LD A,(38558) Jump to AddPointsToScore_2UP if the active player is 2UP.
46508 AND A
46509 JR NZ,AddPointsToScore_2UP
Set the score address for 1UP.
46511 LD HL,38554 Point HL at the score of 1UP at 1UP_Score_3.
46514 JR AddPointsToScore_Start Jump to AddPointsToScore_Start.
Set the score address for 2UP.
AddPointsToScore_2UP 46516 LD HL,38557 Point HL at the score of 2UP at 2UP_Score_3.
Process adding the points to the appropriate score.
AddPointsToScore_Start 46519 LD A,(HL) Fetch the lowest pair of digits of the score.
46520 ADD A,C Add the low byte of the points to the digits (in BCD).
46521 DAA
46522 LD (HL),A Store the new lowest pair of digits.
46523 DEC HL Move onto the middle pair of digits.
46524 LD A,(HL) Fetch the middle pair of digits of the score.
46525 ADC A,B Add the high byte of the points to the digits, plus the carry (in BCD).
46526 DAA
46527 LD (HL),A Store the new middle pair of digits.
46528 DEC HL Move onto the highest pair of digits.
46529 LD A,(HL) Fetch the highest pair of digits of the score.
46530 ADC A,0 Add the carry to the digits (in BCD).
46532 DAA
46533 LD (HL),A Store the new highest pair of digits.
Check the active player.
46534 LD A,(38558) Jump to Score_2UP if the active player is 2UP.
46537 AND A
46538 JR NZ,Score_2UP
View the equivalent code in;
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