SMWJailbreak Mod: Flutter-Jump

; Variables used:
; $F0 = Time to flutter jump
        If this is non-zero value, it will apply flutter effect
; $F1 = Flutter jump rest
        Amount of time left
; $F2 = Flutter carry
        Calculated player Y speed
AD 7A 18   LDA.W $187A   ; If player isn't on Yoshi...
F0 ??      BEQ Reset     ; ...stop the flutter jump
A5 72      LDA $72       ; If player is on the ground...
F0 ??      BEQ Reset     ; ...stop the flutter jump
A5 74      LDA $74       ; If player is climbing...
05 75      ORA $75       ; ...or swimming...
D0 ??      BNE Reset     ; ...stop the flutter jump
A5 19      LDA $19       ; Load player powerup
C9 02      CMP.B #$02    ; If player has cape...
F0 ??      BEQ Reset     ; ...stop the flutter jump
A5 F0      LDA $F0       ; If player isn't flutter jumping...
F0 ??      BEQ NoFlutter ; ...don't apply its effects
A5 F2      LDA $F2       ; Load flutter carry
3A         DEC A         ; Decrement it
30 ??      BMI Label1    ; If player is supposed to be rising...
3A         DEC A         ; ...rise twice as fast
:Label1
85 7D      STA $7D       ; Store into player Y speed
85 F2      STA $F2       ; Store into flutter carry
A5 7B      LDA $7B       ; If player is moving left...
30 ??      BMI MoveLeft  ; ...jump to code for moving left
C9 20      CMP.B $#20    ; If player X speed < #$20 (not quite running, to the right)...
90 ??      BCC Label2    ; ...jump past speed-limiting code
A9 20      LDA.B #$20    ; Load #$20 into A
80 ??      BRA Label2    ; Jump past code for moving left
:MoveLeft
C9 DF      CMP.B $#DF    ; If player X speed >= #$DF (not quite running, to the left)...
B0 ??      BCS Label2    ; ...jump past speed-limiting code
A9 DF      LDA.B #$DF    ; Load #$DF into A
:Label2
85 7B      STA $7B       ; Store into player X speed
A5 7D      LDA $7D       ; If player is falling...
10 ??      BPL Fluttered ; ...jump past flutter decrement
C9 E0      CMP.B #$E0    ; If player is almost done rising...
B0 ??      BCS Fluttered ; ...jump past flutter decrement
C6 F0      DEC $F0       ; Decrement the flutter jump counter
80 ??      BRA Fluttered ; Don't run the resting code if we're flutter jumping
:NoFlutter
A5 F1      LDA $F1       ; If there is still flutter jump rest time...
F0 ??      BEQ NoRest    ; ...don't decrement the rest timer
C6 F1      DEC $F1       ; Else, do
:NoRest
:Fluttered
A5 15      LDA $15       ; Load some controller data
89 80      BIT.B #$80    ; If player isn't holding the jump button...
F0 ??      BEQ EndOfMod  ; ...skip to end of mod
A5 7D      LDA $7D       ; If player is rising...
30 ??      BMI EndOfMod  ; ...skip to end of mod
C9 20      CMP #$20      ; If player is just starting to fall...
90 ??      BCC EndOfMod  ; ...skip to end of mod
9C 0D 14   STZ.W $140D   ; Disable spinjumping
A5 F1      LDA $F1       ; If we are resting...
D0 ??      BNE EndOfMod  ; ...skip to end of mod
A9 01      LDA.B #$01    ; Store the value #$01...
85 F0      STA $F0       ; ...into the flutter jump timer
A5 7D      LDA $7D       ; Store the player Y speed...
85 F1      STA $F1       ; ...into the flutter carry
A9 30      LDA.B #$30    ; Store the resting time...
85 F2      STA $F2       ; ...into the flutter rest timer
A9 09      LDA.B #$09    ; Load sound #$09 (cape fly sound)
8D F9 1D   STA.W #$1DF9  ; Play sound
:EndOfMod
6B         RTL           ; End of mod code
:Reset
64 F0      STZ $F0       ; Reset
64 F1      STZ $F1       ; every
64 F2      STZ $F2       ; flag
6B         RTL           ; .