alttpr-gwaa-kiwi/alttpr-baserom
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Allow Ganon to be vulnerable to arbitrary item

Browse Source
This commit is contained in:
Kara Alexandra
2021-06-26 08:11:01 -07:00
parent ea72d70b1b
commit 828a9df7d9
7 changed files with 218 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
variable_ganon_vulnerability.asm Normal file
View File

@@ -0,0 +1,131 @@
;--------------------------------------------------------------------------------
!ANCILLA_DAMAGE = "$06EC84"
; start with X = sprite index, A = ancilla type index
;--------------------------------------------------------------------------------
Ganon_CheckAncillaVulnerability:
PHA
LDA $0EE0, X : BNE .not_vulnerable_pla
PLA
PHX : PHA
LDA.l GanonVulnerabilityItem
TAX : PLA
CMP.l Ganon_CheckByAncilla, X : BNE +
PLX : BRA .vulnerable
+
PLX : PHA
LDA.l GanonVulnerabilityItem
CMP #$01 : BEQ .silver_arrows
CMP #$11 : BEQ .somaria
BRA .not_vulnerable_pla
.silver_arrows
PLA : CMP #$09 : BNE .not_vulnerable
LDA $7EF340 : CMP.b #$03 : !BGE +
LDA #$09 : BRA .not_vulnerable
+
BRA .vulnerable
.hammer
BRA .not_vulnerable_pla ; NYI
.golden_bee
BRA .not_vulnerable_pla ; NYI
.somaria
PLA : CMP #$01 : BEQ .vulnerable
CMP #$2C : BEQ .vulnerable
BRA .vulnerable
.vulnerable
PHX
LDA.l GanonVulnerabilityItem
TAX
LDA.l Ganon_IFrameDuration, X
PLX
STA $0EE0, X ; give the poor pig some iframes
LDA #$20 : STA $0F10, X
LDA #$09
RTL
.not_vulnerable_pla
PLA
.not_vulnerable
PHX : TAX
LDA.l !ANCILLA_DAMAGE, X
PLX
RTL
; end with X = sprite index, A = damage class
;--------------------------------------------------------------------------------
!ANCILLA_CHECK_SPRITE_DAMAGE_PRESET_CLASS = "$06ECE6"
;--------------------------------------------------------------------------------
Ganon_CheckPowderVulnerability: ; we know it's powder
LDA.l GanonVulnerabilityItem : CMP #$05 : BNE .normal ; ganon not vulnerable to powder
LDA $0E20, X : CMP #$D7 : BNE .normal ; not stunned ganon
LDA $0EE0, X : BNE .normal ; ganon has iframes
LDA.l Ganon_IFrameDuration+$05
STA $0EE0, X ; give the poor pig some iframes
LDA #$20 : STA $0F10, X
LDA #$09
BRA .done
.normal
LDA.b #$0A
.done
JSL.l !ANCILLA_CHECK_SPRITE_DAMAGE_PRESET_CLASS
RTL
;--------------------------------------------------------------------------------
Ganon_CheckBeeVulnerability: ; we know it's a bee
LDA.l GanonVulnerabilityItem : CMP #$10 : BNE .normal ; ganon not vulnerable to bee
LDA $0E20, X : CMP #$D7 : BNE .normal ; not stunned ganon
LDA $0EE0, X : BNE .normal ; ganon has iframes
LDA.l Ganon_IFrameDuration+$10
STA $0EE0, X ; give the poor pig some iframes
LDA #$20 : STA $0F10, X
LDA #$09
BRA .done
.normal
LDA.b #$0A
.done
JSL.l !ANCILLA_CHECK_SPRITE_DAMAGE_PRESET_CLASS
RTL
;--------------------------------------------------------------------------------
Ganon_CheckInvincible:
LDA $04C5 : CMP.b #$02 : BEQ .not_transparent
LDA $0E20, X : CMP #$D7 : BNE .transparent ; non-stunned ganon
LDA $0301 : AND.b #$0A : BEQ .transparent ; normal behavior if not hammer
LDA.l GanonVulnerabilityItem : CMP #$0C : BNE .transparent ; ganon not vulnerable to hammer
.not_transparent
LDA #$00 : RTL
.transparent
LDA #$01 : RTL
; return non-zero A if ganon should be invincible
;--------------------------------------------------------------------------------
Ganon_CheckHammerVulnerability: ; we know it's hammer
LDA.l GanonVulnerabilityItem : CMP #$0C : BNE .normal ; ganon not vulnerable to hammer
LDA $0E20, X : CMP #$D7 : BNE .normal ; not stunned ganon
LDA $0EE0, X : BNE .normal ; ganon has iframes
LDA.l Ganon_IFrameDuration+$0C
STA $0EE0, X ; give the poor pig some iframes
LDA #$20 : STA $0F10, X
LDA #$09 : STA $0CF2 ; set damage class to silver
SEC : RTL
.normal
CLC : RTL
; return carry set bit if stunned Ganon and Ganon vulnerable to hammer
;--------------------------------------------------------------------------------
CheckBeeBoss:
; Y is sprite index
LDA.l GanonVulnerabilityItem : CMP #$10 : BNE .normal ; ganon not vulnerable to bee
LDA $0E20, Y : CMP #$D7 : BNE .normal ; not stunned ganon
LDA #$00 : RTL
.normal
LDA $0B6B, Y : AND.b #$02
RTL
; return non-zero A if entity is a boss (and bee should not attack)
;--------------------------------------------------------------------------------
Ganon_CheckByAncilla:
db #$00 ; default behavior--we shouldn't be checking the table here anyway
db #$00, #$05, #$1F, #$07, #$00
db #$02, #$0B, #$19, #$18, #$1C
db #$00, #$00, #$00, #$00, #$00
db #$00, #$00, #$31, #$00, #$00
Ganon_IFrameDuration:
db #$00 ; default behavior--we shouldn't be here anyway
db #$00, #$00, #$00, #$34, #$00
db #$00, #$00, #$00, #$00, #$00
db #$00, #$00, #$00, #$00, #$00
db #$00, #$00, #$00, #$00, #$00
;--------------------------------------------------------------------------------