570 lines
9.9 KiB
NASM
570 lines
9.9 KiB
NASM
; =============================================================================
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; Zora Mask
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; Fairy Flippers RAM Position $7EF33C - 01
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; Normal Flippers RAM Position $7ef356 - 01
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; =============================================================================
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org $07A569
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LinkItem_ZoraMask:
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{
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JSR Link_CheckNewY_ButtonPress : BCC .return
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LDA $3A : AND.b #$BF : STA $3A ; clear the Y button state
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LDA $6C : BNE .return ; in a doorway
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LDA $0FFC : BNE .return ; can't open menu
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LDY.b #$04 : LDA.b #$23
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JSL AddTransformationCloud
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LDA.b #$14 : JSR Player_DoSfx2
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LDA $02B2 : CMP #$02 : BEQ .unequip ; is the zora mask on?
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JSL UpdateZoraPalette
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LDA #$36 : STA $BC
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LDA #$02 : STA $02B2
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BRA .return
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.unequip
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JSL Palette_ArmorAndGloves
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LDA #$10 : STA $BC : STZ $02B2 ; take the mask off
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.return
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CLC
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RTS
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}
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; =============================================================================
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org $368000
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incbin gfx/zora_link.4bpp
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; =============================================================================
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UpdateZoraPalette:
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{
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REP #$30 ; change 16 bit mode
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LDX #$001E
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.loop
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LDA.l zora_palette, X : STA $7EC6E0, X
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DEX : DEX : BPL .loop
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SEP #$30 ; go back to 8 bit mode
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INC $15 ; update the palette
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RTL
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}
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; TODO: Change from "bunny palette" to blue zora palette colors
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zora_palette:
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dw #$7BDE, #$7FFF, #$2F7D, #$19B5, #$3A9C, #$14A5, #$19FD, #$14B6
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dw #$55BB, #$362A, #$3F4E, #$162B, #$22D0, #$2E5A, #$1970, #$7616
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dw #$6565, #$7271, #$2AB7, #$477E, #$1997, #$14B5, #$459B, #$69F2
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dw #$7AB8, #$2609, #$19D8, #$3D95, #$567C, #$1890, #$52F6, #$2357, #$0000
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; =============================================================================
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LinkItem_UsingZoraMask:
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{
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}
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; =============================================================================
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; Disassembled/Debugged Code of Conn's Zora Flippers
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; May God Give Me Strength
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; =============================================================================
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; 22E100
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LDA $2F
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STA $0323
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JMP $E5F0
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NOP
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NOP
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NOP
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NOP
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LDA $0345
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CMP #$01
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BEQ $22E120
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LDA $7F500E
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CMP #$01
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BEQ $22E11C
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RTL
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; =============================================================================
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; 22E120
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LDA $F0
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CMP #$40
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BEQ $22E12D
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LDA #$00
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STA $7F500F
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RTL
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;-------
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LDA $7F500F
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CMP #$01
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BNE $22E136
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RTL
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;-------
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LDA #$01
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STA $7F500F
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JSR $E340
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NOP
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NOP
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LDA $1B
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BEQ $22E17D
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LDA $7F500E
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CMP #$00
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BNE $22E163
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JMP $E320
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; =============================================================================
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; 22E17D
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LDA $7F500E
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CMP #$00
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BNE $22E1A3
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LDA $5D
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CMP #$04
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BEQ $22E18C
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RTL
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;-------
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LDA #$01
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STA $7F500E
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STZ $5D
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LDA #$01
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STA $55
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STA $037B
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LDA #$08
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STA $5E
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NOP
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NOP
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NOP
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RTL
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;-------
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LDA #$00
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JSL $22EF80
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LDA #$04
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STA $5D
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STZ $55
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STZ $5E
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LDA #$01
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STA $0345
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STZ $037B
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RTL
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; =============================================================================
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; 22E1E0
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LDA $1B
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BNE $22E1F7
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LDA $7F500E
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CMP #$01
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BNE $22E1F7
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LDA #$01
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STA $55
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STZ $5D
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LDA #$08
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STA $5E
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RTL
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;-------
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LDA #$06
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STA $5D
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RTL
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; =============================================================================
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; 22E260
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LDA $7EF33C
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AND #$00FF
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CMP #$0001
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BEQ $22E271
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LDA $7EF357
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RTL
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; -------
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; 22E271
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SEP #$30
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LDA #$3C
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STA $1613
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STA $1615
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STA $1653
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STA $1655
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REP #$30
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LDA $7EF357
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RTL
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; =============================================================================
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; 22E2A0
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;
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; Description: routine is hooked at $07:8106, right before the
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; Link_ControlHandlerTable jump loop.
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;
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; Observed behavior of preserving the direction link was facing when diving
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; E.g. face left, dive, turn right underwater, and resurface facing left
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FairyFlipper_Prepare:
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{
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JSR FairyFlippers_Main ; $E530
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JSL FairyFlippers_HandleMagic ; $22E670
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LDA $7F500E : CMP #$01 ; are we currently underwater?
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BEQ .underwater
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JMP FairyFlippers_RestoreControlHandler ; $E2F0
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.underwater
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LDA $F0 ; Joypad 1 Register (preserves previous press)
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SEC : SBC #$0B ; ??? Not sure
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BCS .beta
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JMP FairyFlippers_RestoreControlHandler ; $E2F0
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.beta
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LDA $F0 ; Joypad 1 Register (preserves previous press)
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SEC : SBC #$4B ; probably Y
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BCS .gamma
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LDA #$40
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STA $F0
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JMP $079657 ; Apart of LinkState_Swimming
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.gamma
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LDA $F0 ; Joypad 1 Register (preserves previous press)
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SEC : SBC #$BB
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BCS $22E2D5 ; Unknown?? Possibly dead branch
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JMP FairyFlippers_RestoreControlHandler ; $E2F0
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}
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; =============================================================================
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; 22E2F0
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FairyFlippers_RestoreControlHandler:
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{
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LDA $5D ; Player Handler or "State"
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ASL
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TAX
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JMP $078106 ; Link_ControlHandler Jump Table Statement
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}
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; =============================================================================
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; 22E300
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LDA #$00
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STA $5D
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STA $7F500E
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STA $7F500F
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STA $5E
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STA $0345
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JSL $00E3FA
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RTL
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; =============================================================================
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; 22E340
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LDA $1B
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BEQ $22E34E
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LDA $0114
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BEQ $22E34E
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CMP #$08
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BEQ $22E34E
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RTS
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;-------
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LDA #$24
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STA $012E
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RTS
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; =============================================================================
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; 22E460
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LDA $02E4
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AND #$00FF
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BNE $22E46E
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LDA #$0009
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LDX $8C
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RTL
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;-------
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LDA $0202
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AND #$00FF
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CMP #$000F
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BNE $22E481
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LDA $02F0
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AND #$00FF
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BEQ $22E487
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LDA #$0009
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LDX $8C
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RTL
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; =============================================================================
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; 22E500
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CMP #$5A
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BEQ $22E507
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JMP $D00B
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; =============================================================================
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; 22E530
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; Seems to always run when you are in the water
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FairyFlippers_Main:
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{
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LDA $7F500E ; are we currently underwater?
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CMP #$01
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BEQ $22E539
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RTS
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;-------------
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; underwater
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LDA $7F500F
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CMP #$01
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BNE .alpha
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LDA $F0 : CMP #$40 ; controller again you shouldn't have
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BNE .alpha
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LDA $67 : CMP #$00 ; is player facing up ?
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BEQ .alpha
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STZ $67
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.alpha
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LDA $1B ; Dungeon/Overworld flag
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BNE $22E558
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; Set underwater walking speed
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LDA #$08
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STA $5E ; Link Speed Setting
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RTS
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}
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; =============================================================================
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; 22E5F0
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LDA $7EF33C
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BNE $22E5F7
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RTL
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;-------
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LDA $4D
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BEQ $22E5FC
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RTL
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;-------
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JMP $E108
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; =============================================================================
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; 22E600
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; Possibly relevant, unconfirmed
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LDA $7EF34A
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AND #$00FF
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CMP #$0001
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BEQ $22E611
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LDA $7EF35C,X
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RTL
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;-------
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LDA $7EF33B
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AND #$00FF
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CMP #$0001
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BNE $22E622
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LDA $7EF35C,X
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RTL
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;-------
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SEP #$30
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LDA #$3C
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STA $139F
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STA $13A1
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STA $13DF
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STA $13E1
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REP #$30
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LDA $7EF35C,X
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RTL
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; =============================================================================
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; 22E670
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FairyFlippers_HandleMagic:
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{
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LDA $7F500E ; probably free ram
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CMP #$01
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BEQ $22E679
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RTL
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;-------
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; Magic draining loop
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LDA $7EF36E ; Load magic
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BNE $22E688 ; branch if != 0
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LDA #$3C
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STA $012E
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JMP $22E141
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LDA $7F500D ; load timer
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BNE $22E69E ; branch if != 0
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LDA #$18
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STA $7F500D ; set timer to 18
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LDA $7EF36E ; load magic
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DEC ; decrease magic by 1
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STA $7EF36E ; store new magic
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RTL
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;-------
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DEC
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STA $7F500D ; decrease timer
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RTL
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}
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; =============================================================================
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; 22E700
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STA $F6
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STY $FA
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REP #$30
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LDA $7EE000
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DEC
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BNE $22E721
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LDA $7EF339
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INC
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CMP #$1770
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BCC $22E71A
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LDA #$0000
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STA $7EF339
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LDA #$0E10
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STA $7EE000
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SEP #$30
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RTL
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; =============================================================================
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; 22E760
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LDA #$0E10
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STA $7EE000
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LDY #$0000
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LDX $00
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RTL
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; =============================================================================
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; 22E780
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; Jesucristo...
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REP #$30
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LDY #$0000
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LDA $7EF339
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CMP #$000A
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BCC $22E796
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SEC
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SBC #$000A
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INY
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INY
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BRA $22E789
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STA $00
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TYA
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ASL
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ASL
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ASL
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ORA $00
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LDY #$0000
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CMP #$0060
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BCC $22E7AD
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SEC
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SBC #$0060
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INY
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BRA $22E7A1
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LDX #$0000
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STA $00
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AND #$000F
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ASL
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TAX
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LDA $22E860,X
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STA $1376
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LDA $00
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AND #$00F0
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LSR
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LSR
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LSR
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TAX
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LDA $22E860,X
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STA $1374
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TYA
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LDY #$0000
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CMP #$000A
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BCC $22E7DF
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SEC
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SBC #$000A
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INY
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INY
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BRA $22E7D2
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STA $00
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TYA
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ASL
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ASL
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ASL
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ORA $00
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STA $00
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AND #$000F
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ASL
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TAX
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LDA $22E860,X
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STA $1370
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LDA $00
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AND #$00F0
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LSR
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LSR
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LSR
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TAX
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LDA $22E860,X
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STA $136E
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LDA $7E0AE0
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AND #$00FF
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CMP #$00C0
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BNE $22E816
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LDA #$2CF5
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BRA $22E819
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LDA #$241D
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STA $1372
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SEP #$30
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INC $0207
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LDA $F0
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RTL
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; =============================================================================
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; 22E830
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ADC #$0020
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STA $1CD0
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LDA $10
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AND #$00FF
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CMP #$0012
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BEQ $22E841
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RTL
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;-------
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STZ $0223
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STZ $1CD8
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LDA $7F502E
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AND #$00FF
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CMP #$0000
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BNE $22E854
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RTL
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; =============================================================================
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; 22EF50
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LDA $7EF3CC
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CMP #$0D
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BEQ $22EF59
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RTL
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; =============================================================================
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; 22EF80
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STA $7F500E ; reset underwater variable
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STZ $0372 ; link bounce flag
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RTL
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; =============================================================================
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; 22EFA0
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LDA $5D
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CMP #$05
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BNE $22EFAA
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STZ $0351
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RTS
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;-------
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LDA $4D
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CMP #$01
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BNE $22EFB4
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LDA #$04
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STA $5D
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RTS |