Add variable ganon vulnerability mode

2025-09-01 13:15:22 -05:00
parent cef41b1674
commit e4f9c4cffc
8 changed files with 385 additions and 28 deletions
--- a/special_weapons.asm
+++ b/special_weapons.asm
@@ -0,0 +1,126 @@
+DamageClassCalc:
+	PHA
+	LDA.l GanonVulnerabilityItem : BEQ +
+	LDA.w SpriteTypeTable, X : CMP.b #$D7 : BNE +
+	PLA
+	JSL Ganon_CheckAncillaVulnerability
+	RTL
+
+	LDA.l SpecialWeapons : AND.b #$7F : CMP.b #$06 : BEQ .cane_immune
+	PLA
+	CMP.b #$01 : BEQ .red_cane
+	CMP.b #$2C : BEQ .red_cane
+	CMP.b #$31 : BEQ .blue_cane
+	CMP.b #$0C : BEQ .beam
+	BRA .not_cane_or_beam
+
+.red_cane
+	PHA
+	LDA.l SpecialWeapons : AND.b #$7F : CMP.b #$04 : BEQ .special_cane
+	                                    CMP.b #$05 : BEQ .special_cane
+	LDA.l SpecialWeapons : BIT.b #$80 : BNE .cane_immune
+	BRA .normal
+
+.blue_cane
+	PHA
+	LDA.l SpecialWeapons : AND.b #$7F : CMP.b #$03 : BEQ .special_cane
+	                                    CMP.b #$05 : BEQ .special_cane
+	LDA.l SpecialWeapons : BIT.b #$80 : BNE .cane_immune
+	BRA .normal
+
+.cane_immune
+	LDA.w SpriteTypeTable, X : CMP.b #$1E : BEQ .normal ; crystal switch
+	PLA
+	BRA .impervious
+
+.special_cane
+	PLA
+	LDA.w SpriteTypeTable, X : CMP.b #$D6 : BEQ .unstunned_ganon
+	                           CMP.b #$88 : BEQ .mothula
+	BRA .special_level
+
+.impervious
+	LDA.b #$FF
+	RTL
+
+.beam
+	PHA
+	LDA.l SpecialWeapons : AND.b #$7F : CMP.b #$02 : BNE .normal
+	PLA
+	LDA.b #$05
+	RTL
+
+.normal
+	PLA
+
+.not_cane_or_beam
+	CMP.b #$07 : BNE .no_change
+	LDA.l SpecialWeapons : AND.b #$7F : CMP.b #$01 : BNE .normal_bombs
+	LDA.l SpecialWeaponLevel : BEQ .normal_bombs
+	LDA.w SpriteTypeTable, X : CMP.b #$D6 : BEQ .unstunned_ganon
+	                           CMP.b #$88 : BEQ .mothula
+	                           CMP.b #$91 : BEQ .stalfos_knight
+	                           CMP.b #$92 : BEQ .helmasaur_king
+
+.special_level
+	LDA.l SpecialWeaponLevel
+	BRA .done
+
+.mothula
+	LDA.l SpecialWeaponLevel
+	CMP.b #$04 : BCS .fix_mothula
+	BRA .done
+
+.fix_mothula
+	LDA.b #$03
+	BRA .done
+
+.stalfos_knight
+	LDA.l StalfosBombDamage : BEQ .special_level
+	LDA.b #$08
+	BRA .done
+
+.helmasaur_king
+	LDA.w $0DB0, X : CMP.b #$03 : BCS .special_level
+	LDA.b #$08
+	BRA .done
+
+.unstunned_ganon
+	LDA.w $04C5 : CMP.b #$02 : BNE .impervious
+	LDA.w $0EE0, X : BNE .impervious
+	LDA.b #$34 : STA.w $0EE0, X ; give the poor pig some i-frames
+	BRA .special_level
+
+.normal_bombs
+	LDA.b #$07
+
+.no_change
+	PHX : TAX
+	LDA.l $86EC84, X
+	PLX
+	CMP.b #$06 : BNE .done
+	LDA.l BowEquipment : CMP.b #$03 : BCS .actual_silver_arrows
+
+.normal_arrows
+	LDA.b #$06
+
+.done
+	RTL
+
+.actual_silver_arrows
+	LDA.w SpriteTypeTable, X : CMP.b #$D7 : BNE +
+	LDA.b #$20 : STA.w SpriteTimerE, X
+	LDA.b #$09
+	RTL
+;--------------------------------------------------------------------------------
+Utility_CheckImpervious:
+	LDA.w SpriteControl, X : AND.b #$40 : BNE .impervious
+	LDA.w $0CF2 : CMP.b #$FF : BEQ .impervious
+	LDA.w UseY1 : AND.b #$0A : BEQ .not_impervious ; normal behavior if not hammering
+	JSL Ganon_CheckHammerVulnerability : BCS .not_impervious
+
+.not_impervious
+	LDA.b #$00 : RTL
+.impervious
+	LDA.b #$01 : RTL
+;--------------------------------------------------------------------------------