89 lines
2.0 KiB
NASM
89 lines
2.0 KiB
NASM
IsItemAvailable:
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LDA InfiniteBombsModifier : BEQ .finite
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.infinite
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CPX.b #$04 : BNE .finite
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LDA.b #$01 : RTL
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.finite
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LDA EquipmentWRAM-1, X
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RTL
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LoadBombCount:
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LDA InfiniteBombsModifier : BNE .infinite
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.finite
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LDA BombsEquipment
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.infinite
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RTL
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LoadBombCount16:
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LDA InfiniteBombsModifier : AND.w #$00FF : BNE .infinite
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.finite
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LDA BombsEquipment
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.infinite
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RTL
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StoreBombCount:
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JSL IncrementBombsPlacedCounter
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PHA : LDA InfiniteBombsModifier : BEQ .finite
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.infinite
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PLA : LDA.b #$01 : RTL
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.finite
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PLA : STA BombsEquipment
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RTL
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SearchForEquippedItem:
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LDA InfiniteBombsModifier : BEQ +
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LDA.b #$01 : LDX.b #$00 : RTL
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+
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LDA BowEquipment ; thing we wrote over
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RTL
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DecrementArrows:
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LDA InfiniteArrowsModifier : BNE .infinite
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LDA.l ArrowMode : BNE .rupees : BRA .normal
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.infinite
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LDA.b #$01 : RTL
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.normal
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LDA CurrentArrows : BEQ .done
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DEC : STA CurrentArrows : INC
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BRA .done
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.rupees
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REP #$20
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LDA.b $A0 : CMP #$0111 : SEP #$20 : BNE .not_archery_game
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LDA.b $1B : BEQ .not_archery_game ; in overworld
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LDA.w $0B9A : BEQ .shoot_arrow ; arrow game active
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LDA.b #$00 : BRA .done
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.not_archery_game
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LDA.l CurrentArrows : BNE .shoot_arrow ; check if we have arrows
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BRA .done
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.shoot_arrow
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PHX
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REP #$20
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LDA CurrentRupees : BEQ +
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PHA : LDA BowEquipment : DEC : AND #$0002 : TAX : PLA
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!SUB.l ArrowModeWoodArrowCost, X ; CMP.w #$0000
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BMI .not_enough_money
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STA CurrentRupees : LDA.w #$0001 : BRA +
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.not_enough_money
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LDA.w #$0000
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+
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SEP #$20 ; set 8-bit accumulator
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PLX
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.done
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CMP.b #$00
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RTL
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ArrowGame:
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LDA $0B99 : BEQ +
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DEC $0B99 ; reduce minigame arrow count
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LDA.l ArrowMode : BNE .rupees
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.normal
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LDA CurrentArrows : INC #2 : STA CurrentArrows ; increment arrow count (by 2 for some reason)
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RTL
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.rupees
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PHX
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REP #$20 ; set 16-bit accumulator
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LDA BowEquipment : DEC : AND #$0002 : TAX
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LDA CurrentRupees : !ADD.l ArrowModeWoodArrowCost, X : STA CurrentRupees
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SEP #$20 ; set 8-bit accumulator
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PLX
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+
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RTL
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