788cceaab9
Deleted several unused modules and some commented code Reorganized some routines to clean up modules Moved some memory into mirrored WRAM Refactored NMI hook aux routine Removed old fake flipper fix
93 lines
2.2 KiB
NASM
93 lines
2.2 KiB
NASM
; Thanks to Kazuto for developing the original QS code that inspired this one
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QuickSwap:
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; We perform all other checks only if we are pushing L or R in order to have minimal
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; perf impact, since this runs every frame
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LDA.b $F6 : AND.b #$30 : BEQ .done
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XBA ; stash away the value for after the checks.
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LDA.l QuickSwapFlag : BEQ .done
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LDA.w $0202 : BEQ .done ; Skip everything if we don't have any items
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LDY.b #$14
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PHX
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XBA ; restore the stashed value
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CMP.b #$30 : BNE +
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; If prossing both L and R this frame, then go directly to the special swap code
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LDX.w $0202 : BRA .special_swap
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+
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BIT.b #$10 : BEQ + ; Only pressed R
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JSR.w RCode
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LDA.b $F2 : BIT.b #$20 : BNE .special_swap ; Still holding L from a previous frame
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BRA .store
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+
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; Only pressed L
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JSR.w LCode
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LDA.b $F2 : BIT #$10 : BNE .special_swap ; Still holding R from a previous frame
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BRA .store
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.special_swap
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LDA.l InventoryTracking+1 : ORA.b #$01 : STA.l InventoryTracking+1
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CPX.b #$02 : BEQ + ; boomerang
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CPX.b #$01 : BEQ + ; bow
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CPX.b #$05 : BEQ + ; powder
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CPX.b #$0D : BEQ + ; flute
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CPX.b #$10 : BEQ + ; bottle
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BRA .store
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+ STX.w $0202 : JSL ProcessMenuButtons_y_pressed
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.store
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LDA.b #$20 : STA.w $012F
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STX.w $0202
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JSL HUD_RefreshIconLong
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PLX
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.done
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LDA.b $F6 : AND.b #$40 ;what we wrote over
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RTL
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RCode:
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LDX.w $0202
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LDA.b $F2 : BIT.b #$20 : BNE ++ ; Still holding L from a previous frame
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LDA.l InventoryTracking+1 : AND.b #$FE : STA.l InventoryTracking+1
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BRA +
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++
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LDA.l InventoryTracking+1 : BIT.b #$01 : BEQ +
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RTS
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-
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+ CPX.b #$14 : BNE + : LDX.b #$00 ;will wrap around to 1
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+ INX
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DEY : BEQ +
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.nextItem
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JSL.l IsItemAvailable : BEQ -
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+
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RTS
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LCode:
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LDX.w $0202
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LDA.b $F2 : BIT #$10 : BNE ++ ; Still holding R from a previous frame
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LDA.l InventoryTracking+1 : AND.b #$FE : STA.l InventoryTracking+1
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BRA +
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++
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LDA.l InventoryTracking+1 : BIT.b #$01 : BEQ +
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RTS
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-
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+ CPX.b #$01 : BNE + : LDX.b #$15 ; will wrap around to $14
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+ DEX
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DEY : BEQ +
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.nextItem
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JSL.l IsItemAvailable : BEQ -
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+
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RTS
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IsItemAvailable:
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LDA.l InfiniteBombs : 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.l EquipmentWRAM-1, X
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RTL
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