550 lines
18 KiB
NASM
550 lines
18 KiB
NASM
;================================================================================
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; Utility Functions
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;================================================================================
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; GetSpriteTile
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; in: A - Loot ID
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; out: A - Sprite GFX ID
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;--------------------------------------------------------------------------------
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GetSpriteID:
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JSR.w AttemptItemSubstitution
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JSR.w ResolveLootID
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CMP.b #$16 : BEQ .bottle ; Bottle
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CMP.b #$2B : BEQ .bottle ; Red Potion w/bottle
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CMP.b #$2C : BEQ .bottle ; Green Potion w/bottle
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CMP.b #$2D : BEQ .bottle ; Blue Potion w/bottle
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CMP.b #$3C : BEQ .bottle ; Bee w/bottle
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CMP.b #$3D : BEQ .bottle ; Fairy w/bottle
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CMP.b #$48 : BEQ .bottle ; Gold Bee w/bottle
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CMP.b #$6D : BEQ .server_F0 ; Server Request F0
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CMP.b #$6E : BEQ .server_F1 ; Server Request F1
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CMP.b #$6F : BEQ .server_F2 ; Server Request F2
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BRA .normal
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.bottle
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PHA : JSR.w CountBottles : CMP.l BottleLimit : !BLT +
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PLA : LDA.l BottleLimitReplacement
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JMP GetSpriteID
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+
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PLA : BRA .normal
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.server_F0
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JSL.l ItemVisualServiceRequest_F0
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BRA .normal
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.server_F1
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JSL.l ItemVisualServiceRequest_F1
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BRA .normal
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.server_F2
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JSL.l ItemVisualServiceRequest_F2
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.normal
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PHX
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TAX : LDA.l ItemReceipts_graphics, X ; look up item gfx
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PLX
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RTL
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;--------------------------------------------------------------------------------
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; GetSpritePalette
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; in: A - Loot ID
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; out: A - Palette
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;--------------------------------------------------------------------------------
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GetSpritePalette:
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JSR AttemptItemSubstitution
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JSR.w ResolveLootID
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.resolved
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CMP.b #$16 : BEQ .bottle ; Bottle
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CMP.b #$2B : BEQ .bottle ; Red Potion w/bottle
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CMP.b #$2C : BEQ .bottle ; Green Potion w/bottle
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CMP.b #$2D : BEQ .bottle ; Blue Potion w/bottle
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CMP.b #$3C : BEQ .bottle ; Bee w/bottle
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CMP.b #$3D : BEQ .bottle ; Fairy w/bottle
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CMP.b #$48 : BEQ .bottle ; Gold Bee w/bottle
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BRA .notBottle
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.bottle
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PHA : JSR.w CountBottles : CMP.l BottleLimit : !BLT +
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PLA : LDA.l BottleLimitReplacement
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JMP GetSpritePalette
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+
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PLA : .notBottle
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PHX
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TAX : LDA.l GfxPalettes, X ; look up item gfx
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PLX
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RTL
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;---------------------------------------------------------------------------------------------------
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;DATA - Loot Identifier to Sprite Palette
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{
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GfxPalettes:
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db $00, $04, $02, $08, $04, $02, $08, $02
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db $04, $02, $02, $02, $04, $04, $04, $08
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db $08, $08, $02, $02, $04, $02, $02, $02
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db $04, $02, $04, $02, $08, $08, $04, $02
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db $0A, $02, $04, $02, $04, $04, $00, $04
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db $04, $08, $02, $02, $08, $04, $02, $08
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db $04, $04, $08, $08, $08, $04, $02, $08
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db $02, $04, $08, $02, $04, $04, $02, $02
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db $08, $08, $02, $04, $04, $08, $08, $08
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db $04, $04, $04, $02, $08, $08, $08, $08
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; db $04, $0A, $04, $02, $FF, $FF, $FF, $FF
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db $04 ; Safe Master Sword
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db $08, $08, $08, $08 ; Bomb & Arrow +5/+10
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db $04, $00, $00 ; Programmable Items 1-3
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db $02 ; Upgrade-Only Silver Arrows
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db $06 ; 1 Rupoor
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db $02 ; Null Item
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db $02, $04, $08 ; Red, Blue & Green Clocks
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db $FD, $FE, $FF, $FC ; Progressive Sword, Shield, Armor & Gloves
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db $FA, $FB ; RNG Single & Multi
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db $F8, $F8 ; Progressive Bow
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db $00, $00, $00, $00 ; Unused
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db $08, $08, $08 ; Goal Item Single, Multi & Alt Multi
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db $04, $04, $04 ; Server Request F0, F1, F2
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Free Map
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db $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04, $04 ; Free Compass
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;db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; *EVENT*
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Free Big Key
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Free Small Key
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Unused
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Unused
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Unused
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Unused
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db $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08, $08 ; Unused
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}
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; IsNarrowSprite
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; in: A - Loot ID
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; out: Carry - 0 = Full, 1 = Narrow
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;--------------------------------------------------------------------------------
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IsNarrowSprite:
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PHA : PHX
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PHB : PHK : PLB
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JSR AttemptItemSubstitution
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;--------
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CMP.b #$16 : BEQ .bottle ; Bottle
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CMP.b #$2B : BEQ .bottle ; Red Potion w/bottle
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CMP.b #$2C : BEQ .bottle ; Green Potion w/bottle
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CMP.b #$2D : BEQ .bottle ; Blue Potion w/bottle
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CMP.b #$3C : BEQ .bottle ; Bee w/bottle
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CMP.b #$3D : BEQ .bottle ; Fairy w/bottle
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CMP.b #$48 : BEQ .bottle ; Gold Bee w/bottle
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BRA .notBottle
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.bottle
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JSR.w CountBottles : CMP.l BottleLimit : !BLT +
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LDA.l BottleLimitReplacement
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JSL.l IsNarrowSprite
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JMP .done
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+ : JMP .continue
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.notBottle
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CMP.b #$5E : BNE ++ ; Progressive Sword
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LDA.l HighestSword : CMP.l ProgressiveSwordLimit : !BLT + ; Progressive Sword Limit
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LDA.l ProgressiveSwordReplacement
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JSL.l IsNarrowSprite
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JMP .done
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+ : JMP .continue
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++ CMP.b #$5F : BNE ++ ; Progressive Shield
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LDA.l HighestShield : BNE + : JMP .done ; No Shield
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+ : CMP.l ProgressiveShieldLimit : !BLT .continue
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LDA.l ProgressiveShieldReplacement
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JSL.l IsNarrowSprite
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JMP .done
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++ CMP.b #$60 : BNE ++ ; Progressive Armor
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LDA.l HighestMail : CMP.l ProgressiveArmorLimit : !BLT .continue
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LDA.l ProgressiveArmorReplacement
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JSL.l IsNarrowSprite
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JMP .done
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+
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++ CMP.b #$62 : BNE ++ ; RNG Item (Single)
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JSL.l GetRNGItemSingle : JMP .continue
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++ CMP.b #$63 : BNE ++ ; RNG Item (Multi)
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JSL.l GetRNGItemMulti
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++ CMP.b #$64 : BEQ + ; Progressive Bow
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CMP.b #$65 : BNE .continue ; Progressive Bow (alt)
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+ : LDA.l BowEquipment : INC : LSR
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CMP.l ProgressiveBowLimit : !BLT +
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LDA.l ProgressiveBowReplacement
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JSL.l IsNarrowSprite
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JMP .done
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.continue
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;--------
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LDX.b #$00 ; set index counter to 0
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;----
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-
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CPX.b #$24 : !BGE .false ; finish if we've done the whole list
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CMP.l .smallSprites, X : BNE + ; skip to next if we don't match
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;--
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SEC ; set true state
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BRA .done ; we're done
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;--
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+
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INX ; increment index
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BRA - ; go back to beginning of loop
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;----
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.false
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CLC
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.done
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PLB : PLX : PLA
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RTL
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;DATA - Half-Size Sprite Markers
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{
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.smallSprites
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db $04, $07, $08, $09, $0A, $0B, $0C, $13
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db $15, $18, $24, $2A, $34, $35, $36, $42
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db $43, $45, $59, $A0, $A1, $A2, $A3, $A4
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db $A5, $A6, $A7, $A8, $A9, $AA, $AB, $AC
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db $AD, $AE, $AF, $FF, $FF, $FF, $FF, $FF
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}
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; PrepDynamicTile
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; in: A - Loot ID
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;-------------------------------------------------------------------------------- 20/8477
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PrepDynamicTile:
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PHA : PHX : PHY : PHB
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JSR.w ResolveLootID
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JSR.w LoadDynamicTileOAMTable
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JSL TransferItemReceiptToBuffer_using_ReceiptID
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SEP #$30
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PLB : PLY : PLX : PLA
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; LoadDynamicTileOAMTable
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; in: A - Loot ID
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;-------------------------------------------------------------------------------- 20/847B
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LoadDynamicTileOAMTable:
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PHA : PHP
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PHA
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REP #$20 ; set 16-bit accumulator
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LDA.w #$0000 : STA.l SpriteOAM
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STA.l SpriteOAM+2
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LDA.w #$0200 : STA.l SpriteOAM+6
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SEP #$20 ; set 8-bit accumulator
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LDA.b #$24 : STA.l SpriteOAM+4
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LDA.b $01,s
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JSL.l GetSpritePalette_resolved
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STA.l SpriteOAM+5 : STA.l SpriteOAM+13
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PLA
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JSL.l IsNarrowSprite : BCS .narrow
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BRA .done
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.narrow
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REP #$20 ; set 16-bit accumulator
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LDA.w #$0000 : STA.l SpriteOAM+7
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STA.l SpriteOAM+14
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LDA.w #$0800 : STA.l SpriteOAM+9
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LDA.w #$3400 : STA.l SpriteOAM+11
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.done
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PLP : PLA
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RTS
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; DrawDynamicTile
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; in: A - Loot ID
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; out: A - OAM Slots Taken
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;--------------------------------------------------------------------------------
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; This wastes two OAM slots if you don't want a shadow - fix later - I wrote "fix later" over a year ago and it's still not fixed (Aug 6, 2017) - lol (May 25th, 2019)
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;-------------------------------------------------------------------------------- 2084B8
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DrawDynamicTile:
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JSL.l IsNarrowSprite : BCS .narrow
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.full
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LDA.b #$01 : STA.b Scrap06
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LDA.b #$0C : JSL.l OAM_AllocateFromRegionC
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LDA.b #$02 : PHA
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BRA .draw
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.narrow
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LDA.b #$02 : STA.b Scrap06
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LDA.b #$10 : JSL.l OAM_AllocateFromRegionC
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LDA.b #$03 : PHA
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.draw
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LDA.b #SpriteOAM>>0 : STA.b Scrap08
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LDA.b #SpriteOAM>>8 : STA.b Scrap09
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STZ.b Scrap07
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LDA.b #$7E : PHB : PHA : PLB
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LDA.b #$01 : STA.l SpriteSkipEOR
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JSL Sprite_DrawMultiple_quantity_preset
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LDA.b #$00 : STA.l SpriteSkipEOR
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PLB
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LDA.b OAMPtr : !ADD.b #$08 : STA.b OAMPtr ; leave the pointer in the right spot to draw the shadow, if desired
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LDA.b OAMPtr+2 : INC #2 : STA.b OAMPtr+2
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PLA
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RTL
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;--------------------------------------------------------------------------------
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DrawDynamicTileNoShadow:
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JSL.l IsNarrowSprite : BCS .narrow
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.full
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LDA.b #$01 : STA.b Scrap06
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LDA.b #$04 : JSL.l OAM_AllocateFromRegionC
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BRA .draw
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.narrow
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LDA.b #$02 : STA.b Scrap06
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LDA.b #$08 : JSL.l OAM_AllocateFromRegionC
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.draw
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LDA.b #SpriteOAM>>0 : STA.b Scrap08
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LDA.b #SpriteOAM>>8 : STA.b Scrap09
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STZ.b Scrap07
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LDA.b #$7E : PHB : PHA : PLB
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LDA.b #$01 : STA.l SpriteSkipEOR
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JSL Sprite_DrawMultiple_quantity_preset
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LDA.l Bob : BNE + : LDA.b #$00 : STA.l SpriteSkipEOR : + ; Bob fix is conditional
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PLB
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LDA.b OAMPtr : !ADD.b #$08 : STA.b OAMPtr
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LDA.b OAMPtr+2 : INC #2 : STA.b OAMPtr+2
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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LoadModifiedTileBufferAddress:
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PHA
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LDA.l TileUploadOffsetOverride : BEQ +
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TAX
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LDY.w #$0002
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LDA.w #$0000 : STA.l TileUploadOffsetOverride
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BRA .done
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+
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LDX.w #$2D40
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LDY.w #$0002
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.done
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PLA
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; Sprite_IsOnscreen
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; in: X - Sprite Slot
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; out: Carry - 1 = On Screen, 0 = Off Screen
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;--------------------------------------------------------------------------------
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Sprite_IsOnscreen:
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JSR .check_sprite
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BCS +
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REP #$20
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LDA.b BG2H : PHA : !SUB.w #$0F : STA.b BG2H
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LDA.b BG2V : PHA : !SUB.w #$0F : STA.b BG2V
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SEP #$20
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JSR .check_sprite
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REP #$20
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PLA : STA.b BG2V
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PLA : STA.b BG2H
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SEP #$20
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+
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RTL
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.check_sprite
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LDA.w SpritePosXLow, X : CMP.b BG2H
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LDA.w SpritePosXHigh, X : SBC.b BG2H+1 : BNE .offscreen
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LDA.w SpritePosYLow, X : CMP.b BG2V
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LDA.w SpritePosYHigh, X : SBC.b BG2V+1 : BNE .offscreen
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SEC
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RTS
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.offscreen
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CLC
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RTS
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; Sprite_GetScreenRelativeCoords:
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; out: $00.w Sprite Y
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; out: $02.w Sprite X
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; out: $06.b Sprite Y Relative
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; out: $07.b Sprite X Relative
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;--------------------------------------------------------------------------------
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; Copied from bank $06
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;--------------------------------------------------------------------------------
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Sprite_GetScreenRelativeCoords:
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STY.b Scrap0B
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STA.b Scrap08
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LDA.w SpritePosYLow, X : STA.b Scrap00
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!SUB.b BG2V : STA.b Scrap06
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LDA.w SpritePosYHigh, X : STA.b Scrap01
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LDA.w SpritePosXLow, X : STA.b Scrap02
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!SUB.b BG2H : STA.b Scrap07
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LDA.w SpritePosXHigh, X : STA.b Scrap03
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; SkipDrawEOR - Shims in Bank05.asm : 2499
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;--------------------------------------------------------------------------------
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SkipDrawEOR:
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LDA.l SpriteSkipEOR : BEQ .normal
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LDA.w #$0000 : STA.l SpriteSkipEOR
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LDA.w #$0F00 : TRB.b Scrap04
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.normal
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LDA.b ($08), Y : EOR.w Scrap04 ; thing we wrote over
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RTL
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; CountBits
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; in: A(b) - Byte to count bits in
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; out: A(b) - sum of bits
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; caller is responsible for setting 8-bit mode and preserving X and Y
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;--------------------------------------------------------------------------------
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;CountBits:
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; PHX
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; TAX ; Save a copy of value
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; LSR #4 ; Shift down hi nybble, Leave <3> in C
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; PHA ; And save <7:4> in Stack
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; TXA ; Recover value
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; AND.b #$07 ; Put out <2:0> in X
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; TAX ; And save in X
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; LDA.l NybbleBitCounts, X ; Fetch count for <2:0>
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; PLX ; get <7:4>
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; ADC.l NybbleBitCounts, X ; Add count for S & C
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; PLX
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;RTL
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; Look up table of bit counts in the values $00-$0F
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NybbleBitCounts:
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db #00, #01, #01, #02, #01, #02, #02, #03, #01, #02, #02, #03, #02, #03, #03, #04
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;--------------------------------------------------------------------------------
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;--------------------------------------------------------------------------------
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; HexToDec
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; in: A(w) - Word to Convert
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; out: HexToDecDigit1 - HexToDecDigit5 (high - low)
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;--------------------------------------------------------------------------------
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;HexToDec:
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; PHA
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; PHA
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; LDA.w #$9090
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; STA.l HexToDecDigit1 : STA.l HexToDecDigit3 : STA.l HexToDecDigit4 ; clear digit storage
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; PLA
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; -
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; CMP.w #10000 : !BLT +
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; PHA : SEP #$20 : LDA.l HexToDecDigit1 : INC : STA.l HexToDecDigit1 : REP #$20 : PLA
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; !SUB.w #10000 : BRA -
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; + -
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; CMP.w #1000 : !BLT +
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; PHA : SEP #$20 : LDA.l HexToDecDigit2 : INC : STA.l HexToDecDigit2 : REP #$20 : PLA
|
|
; !SUB.w #1000 : BRA -
|
|
; + -
|
|
; CMP.w #100 : !BLT +
|
|
; PHA : SEP #$20 : LDA.l HexToDecDigit3 : INC : STA.l HexToDecDigit3 : REP #$20 : PLA
|
|
; !SUB.w #100 : BRA -
|
|
; + -
|
|
; CMP.w #10 : !BLT +
|
|
; PHA : SEP #$20 : LDA.l HexToDecDigit4 : INC : STA.l HexToDecDigit4 : REP #$20 : PLA
|
|
; !SUB.w #10 : BRA -
|
|
; + -
|
|
; CMP.w #1 : !BLT +
|
|
; PHA : SEP #$20 : LDA.l HexToDecDigit5 : INC : STA.l HexToDecDigit5 : REP #$20 : PLA
|
|
; !SUB.w #1 : BRA -
|
|
; +
|
|
; PLA
|
|
;RTL
|
|
;--------------------------------------------------------------------------------
|
|
|
|
;--------------------------------------------------------------------------------
|
|
; WriteVRAMStripe
|
|
; in: A(w) - VRAM Destination
|
|
; in: X(w) - Length in Tiles
|
|
; in: Y(w) - Word to Write
|
|
;--------------------------------------------------------------------------------
|
|
WriteVRAMStripe:
|
|
PHX
|
|
LDX.w GFXStripes ; get pointer
|
|
AND.w #$7F : STA.w GFXStripes+2, X : INX #2 ; set destination
|
|
PLA : ASL : AND.w #$7FFF : ORA.w #$7000 : STA.w GFXStripes+2, X : INX #2 ; set length and enable RLE
|
|
TYA : STA.w GFXStripes+2, X : INX #2 ; set tile
|
|
SEP #$20 ; set 8-bit accumulator
|
|
LDA.b #$FF : STA.w GFXStripes+2, X
|
|
STX.w GFXStripes
|
|
LDA.b #01 : STA.b NMISTRIPES
|
|
REP #$20 ; set 16-bit accumulator
|
|
RTL
|
|
;--------------------------------------------------------------------------------
|
|
|
|
;--------------------------------------------------------------------------------
|
|
; WriteVRAMBlock
|
|
; in: A(w) - VRAM Destination
|
|
; in: X(w) - Length in Tiles
|
|
; in: Y(w) - Address of Data to Copy
|
|
;--------------------------------------------------------------------------------
|
|
WriteVRAMBlock:
|
|
PHX
|
|
LDX.w GFXStripes ; get pointer
|
|
AND.w #$7F : STA.w GFXStripes+2, X : INX #2 ; set destination
|
|
PLA : ASL : AND.w #$3FFF : STA.w GFXStripes+2, X : INX #2 ; set length
|
|
|
|
PHX
|
|
TYX ; set X to source
|
|
PHA
|
|
TXA : !ADD #$1002 : TAY ; set Y to dest
|
|
PLA
|
|
;A is already the value we need for mvn
|
|
MVN $7F7E ; currently we transfer from our buffers in 7F to the vram buffer in 7E
|
|
|
|
!ADD 1, s ; add the length in A to the stack pointer on the top of the stack
|
|
PLX : TAX ; pull and promptly ignore, copying the value we just got over it
|
|
|
|
SEP #$20 ; set 8-bit accumulator
|
|
LDA.b #$FF : STA.w GFXStripes+$02, X
|
|
STX.w GFXStripes
|
|
LDA.b #01 : STA.w NMISTRIPES
|
|
REP #$20 ; set 16-bit accumulator
|
|
RTL
|
|
;--------------------------------------------------------------------------------
|
|
;Byte 1 byte 2 Byte 3 byte 4
|
|
;Evvvvvvv vvvvvvv DRllllll llllllll
|
|
;
|
|
;E if set indicates that this is not a header, but instead is the terminator byte. Only the topmost bit matters in that case.
|
|
;The v's form a vram address.
|
|
;if D is set, the dma will increment the vram address by a row per word, instead of incrementing by a column (1).
|
|
;R if set enables a run length encoding feature
|
|
;the l's are the number of bytes to upload minus 1 (don't forget this -1, it is important)
|
|
;
|
|
;This is then followed by the bytes to upload, in normal format.
|
|
|
|
;RLE feature:
|
|
;This feature makes it easy to draw the same tile repeatedly. If this bit is set, the length bits should be set to 2 times the number of copies of the tile to upload. (Without subtracting 1!)
|
|
;It is followed by a single tile (word). Combining this this with the D bit makes it easy to draw large horizontal or vertical runs of a tile without using much space. Geat for erasing or drawing horizontal or verical box edges.
|
|
;================================================================================
|
|
|
|
|
|
DynamicDrawCleanup:
|
|
PHA
|
|
REP #$20
|
|
LDA.w #$F000
|
|
STA.w OAMBuffer
|
|
STA.w OAMBuffer+$04
|
|
STA.w OAMBuffer+$08
|
|
STA.w OAMBuffer+$0C
|
|
STZ.w OAMBuffer+$02
|
|
STZ.w OAMBuffer+$06
|
|
STZ.w OAMBuffer+$0A
|
|
STZ.w OAMBuffer+$0E
|
|
SEP #$20
|
|
PLA
|
|
RTL
|
|
|