162 lines
3.0 KiB
NASM
162 lines
3.0 KiB
NASM
; =========================================================
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; Magic Rings
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; ..pa slbh
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; p - power
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; a - armor
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; s - steadfast
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; l - light
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; b - blast
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; h - heart
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FOUNDRINGS = $7EF3D7
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MAGICRINGS = $7EF3D8
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RingSlot1 = $7EF38C
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RingSlot2 = $7EF38D
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RingSlot3 = $7EF38E
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RingSlotsNum = $7EF38F
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DamageSubclassValue = $0DB8F1
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pushpc
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; Sprite_ApplyCalculatedDamage
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org $06EDC0
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JSL MagicRing_CheckForPower
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pullpc
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; Power - Attack Up, Defense Down
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MagicRing_CheckForPower:
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{
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LDA.l RingSlot1 : AND.b #$20 : BEQ +
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LDA.l RingSlot2 : AND.b #$20 : BEQ +
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LDA.l RingSlot3 : AND.b #$20 : BEQ +
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LDA.w $0CF2 : CMP.b #$04 : BCS .not_sword
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CMP.b #$01 : BCC .not_sword
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LDA.l DamageSubclassValue, X
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CLC : ADC.b #$10
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RTL
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.not_sword
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+
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LDA.l DamageSubclassValue, X
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RTL
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}
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pushpc
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; Sprite_AttemptDamageToLinkPlusRecoil
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org $06F400
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JSL MagicRing_CheckForArmor
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pullpc
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; $0373 - Damage queue for Link
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Sprite_BumpDamageGroups = $06F427
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; Armor - Defense Up, Attack Down
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MagicRing_CheckForArmor:
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{
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LDA.w Sprite_BumpDamageGroups, Y : STA.w $0373
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LDA.l RingSlot1 : AND.b #$10 : BEQ +
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LDA.l RingSlot2 : AND.b #$10 : BEQ +
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LDA.l RingSlot3 : AND.b #$10 : BEQ +
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; Reduce the damage queue by half
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LDA $0373 : BEQ +
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LSR : STA $0373
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+
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RTL
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}
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; =========================================================
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; Steadfast - Less knockback
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MagicRing_CheckForSteadfast:
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{
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LDA.l RingSlot1 : AND.b #$07 : BEQ +
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LDA.l RingSlot2 : AND.b #$07 : BEQ +
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LDA.l RingSlot3 : AND.b #$07 : BEQ +
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STZ.b LinkRecoilX
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STZ.b LinkRecoilY
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+
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#_07E1BE: STZ.b $67
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#_07E1C0: LDY.b #$08
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RTL
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}
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pushpc
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org $07E1BE
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JSL MagicRing_CheckForSteadfast
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pullpc
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; =========================================================
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; Light - Sword beam at -2 hearts
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MagicRing_CheckForLight:
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{
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PHA
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LDA.l RingSlot1 : AND.b #$05 : BEQ +
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LDA.l RingSlot2 : AND.b #$05 : BEQ +
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LDA.l RingSlot3 : AND.b #$05 : BEQ +
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PLA
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SEC
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SBC.b #$10
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CMP.l $7EF36D
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RTL
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+
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PLA
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CMP.l $7EF36D
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RTL
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}
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pushpc
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org $079C77
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JSL MagicRing_CheckForLight
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pullpc
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; =========================================================
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; Blast - Bomb Damage up
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MagicRing_CheckForBlast:
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{
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CPX #$07 : BNE +
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LDA.l RingSlot1 : AND.b #$06 : BEQ +
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LDA.l RingSlot2 : AND.b #$06 : BEQ +
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LDA.l RingSlot3 : AND.b #$06 : BEQ +
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LDA.b #$0D
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RTL
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+
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LDA.l AncillaDamageClasses, X
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RTL
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}
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AncillaDamageClasses = $06EC7E
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pushpc
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org $06ECBF
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JSL MagicRing_CheckForBlast
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pullpc
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; =========================================================
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; Heart - Slowly regenerate hearts
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MagicRings_CheckForHeart:
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{
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LDA.l RingSlot1 : AND.b #$04 : BEQ ++
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LDA.l RingSlot2 : AND.b #$04 : BEQ ++
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LDA.l RingSlot3 : AND.b #$04 : BEQ ++
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LDA.l CURHP : CMP.l MAXHP : BCS ++
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LDA.l FrameCounter : LSR #2 : AND.b #$3F : BEQ +
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JMP ++
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+
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LDA.l CURHP : CLC : ADC.b #$01 : STA.l CURHP
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++
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LDA.b $F5
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AND.b #$80
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RTL
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}
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pushpc
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org $07810C
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JSL MagicRings_CheckForHeart
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pullpc
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