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| − | ==What you'll need:==
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| − | * Sonic 1 Hivebrain disassembly
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| − | * Sonic 1 STH OpenSource project (ROM Hack) (Link here: [https://asmtosegagenesis.forumotion.com/t2-sonic-the-hedgehog-open-source-project-0-07])
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| | | | |
| − | ==Step 1: Port it to Sonic 1 directly==
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| − |
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| − | First, open your Sonic 1 .ASM file and use your text editor (if you're using one, which you should. I use Windows Notepad, but you can use any one you like)
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| − | to go to Obj01 (the Sonic Object)_MdNormal. There, make a branch to a subroutine that we're going to be using. It's going to be called Sonic_SuperPeelout.
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| − |
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| − | Sonic 1 REV02 (ROM Hack) and all other hacks with the SpinDash:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | Obj01_MdNormal: ; XREF: Obj01_Modes
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| − | bsr.w Sonic_SuperPeelout
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| − | bsr.w Sonic_Spindash
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| − | bsr.w Sonic_Jump
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| − | bsr.w Sonic_SlopeResist
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| − | bsr.w Sonic_Move
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| − | bsr.w Sonic_Roll
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| − | bsr.w Sonic_LevelBound
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| − | jsr SpeedToPos
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| − | bsr.w Sonic_AnglePos
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| − | bsr.w Sonic_SlopeRepel
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| − | rts
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| − | </syntaxhighlight>
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| − |
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| − | All other S1 disassemblys:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | Obj01_MdNormal: ; XREF: Obj01_Modes
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| − | bsr.w Sonic_SuperPeelout
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| − | bsr.w Sonic_Jump
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| − | bsr.w Sonic_SlopeResist
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| − | bsr.w Sonic_Move
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| − | bsr.w Sonic_Roll
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| − | bsr.w Sonic_LevelBound
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| − | jsr SpeedToPos
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| − | bsr.w Sonic_AnglePos
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| − | bsr.w Sonic_SlopeRepel
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| − | rts
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| − | </syntaxhighlight>
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| − |
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| − | Next, we need to port the actual SuperPeelOut. To do that, go to '''; End of function Sonic JumpHeight''' and paste this block of code right below it:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | ; ---------------------------------------------------------------------------
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| − | ; Subroutine Sonic Super Peelout
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| − | ; ---------------------------------------------------------------------------
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| − |
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| − | ; ||||||||||||||| S U B R O U T I N E |||||||||||||||||||||||||||||||||||||||
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| − |
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| − | Sonic_SuperPeelout:
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| − | cmpi.b #$21,$1C(a0) ; already peelouting?
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| − | beq.s loc4_1AC8E ; if set, branch
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| − | cmpi.b #7,$1C(a0) ; is anim looking up?
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| − | bne.s locret4_1AC8C ; if not, return
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| − | move.b ($FFFFF603).w,d0 ; read controller
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| − | andi.b #$10,d0 ; pressing B?
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| − | beq.s locret4_1AC8C ; if not, return
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| − | move.b #$21,$1C(a0) ; set Super Peelout anim
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| − | move.w #$D1,d0 ; Super Peelout sound
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| − | jsr (PlaySound_Special).l ; play Super Peelout sound
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| − | addq.l #4,sp ; increment stack ptr
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| − | cmpi.b #$C,$28(a0) ; ??? oxygen remaining?
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| − | bsr.w Sonic_LevelBound
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| − | bsr.w Sonic_AnglePos
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| − |
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| − | locret4_1AC8C:
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| − | rts
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| − |
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| − | ; ---------------------------------------------------------------------------
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| − | loc4_1AC8E:
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| − | addq.w #1,($FFFFFFD4).w ; add 1 of peelout time
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| − | move.b #$21,$1C(a0) ; set Super Peelout anim
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| − | move.b ($FFFFF602).w,d0 ; read controller
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| − | btst #0,d0 ; check up button
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| − | bne.s loc4_1AD78 ; if set, branch
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| − | tst.b ($FFFFFE19).w ; is sonic super?
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| − | bne.s loc4_1AC8ECont ; if yes, branch
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| − | cmpi.w #28,($FFFFFFD4).w ; passed 28 frames? (peelout time)
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| − | bgt.s loc4_1AC8ECont ; if yes, branch
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| − | move.w #0,($FFFFFFD4).w ; clear peelout time
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| − | move.w #$D4,d0 ; stop Super Peelout sound
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| − | jsr (PlaySound_Special).l ; play it!
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| − | rts
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| − |
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| − | loc4_1AC8ECont:
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| − | clr.b $1C(a0) ; clear anim peelout
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| − | moveq #0,d0
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| − | move.w #$EF0,$14(a0) ; get normal speed
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| − | tst.b ($FFFFFE19).w ; is sonic super?
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| − | beq.s loc4_1ACD0 ; if not, branch
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| − | move.w #$EF0,$14(a0) ; get normal speed
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| − |
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| − | loc4_1ACD0:
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| − | move.w ($FFFFFFD4).w,d2 ; set peelout time to d2
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| − | cmpi.w #$C5,d2 ; passed $C5 frames? (peelout time)
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| − | ble.s loc4_1ACD0_Cont ; if not, branch
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| − | move.w #$110,d2 ; set max speed of waiting
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| − |
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| − | loc4_1ACD0_Cont:
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| − | add.w d2,$14(a0) ; add peelout time to speed, how much more you wait (until $C5 frames), greater is the speed added
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| − | move.w #0,($FFFFFFD4).w ; clear peelout time
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| − | btst #0,$22(a0) ; is sonic facing right?
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| − | beq.s loc4_1ACF4 ; if not, branch
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| − | neg.w $14(a0) ; negate inertia
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| − |
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| − | loc4_1ACF4:
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| − | move.w #$BC,d0 ; Super Peelout release sound
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| − | jsr (PlaySound_Special).l ; play it!
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| − |
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| − | loc4_1AD78:
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| − | addq.l #4,sp ; increase stack ptr
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| − | cmpi.w #$60,($FFFFF73E).w
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| − | beq.s loc4_1AD8C
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| − | rts
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| − |
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| − | loc4_1AD8C:
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| − | bsr.w Sonic_LevelBound
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| − | bsr.w Sonic_AnglePos
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| − | rts
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| − |
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| − | ; End of function Sonic_SuperPeelout
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| − | </syntaxhighlight>
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| − |
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| − | For those who have no spindash, go to Part 2 of How to Add SpinDash to Sonic 1 by Puto to get the spindash sound.
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| − |
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| − | ==Step 2: Porting the PeelOut animation from STHOSP==
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| − |
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| − | (Quick note: if you don't want to add the PeelOut animation, skip to Step 3)
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| − |
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| − | Next step is to go to the \artunc folder of your disassembly and also go to the \artunc folder of STHOSP's disassembly.
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| − | Once you're there, copy the art file sonic.bin from STHOSP's disasm and replace the one in your disasm with that.
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| − |
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| − | Next step? Replace '\maps\Sonic.asm', '\inc\Sonic dynamic pattern load cues.asm', and '\anim\Sonic.asm' with their STHOSP equivalents.
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| − |
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| − | Finally, open the main Sonic 1 .ASM file once again, and go to '''Sonic_Animate:'''
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| − | Then go to this:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | loc_13A9C:
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| − | lea (SonAni_Run).l,a1 ; use running animation
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| − | cmpi.w #$600,d2 ; is Sonic at running speed?
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| − | bcc.s loc_13AB4 ; if yes, branch
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| − | lea (SonAni_Walk).l,a1 ; use walking animation
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| − | move.b d0,d1
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| − | lsr.b #1,d1
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| − | add.b d1,d0
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| − | </syntaxhighlight>
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| − |
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| − | and change to this:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | loc_13A9C:
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| − | lea (SonAni_SuperPeelout).l,a1
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| − | cmpi.w #$D00,d2 ; is Sonic at running speed?
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| − | bcc.s loc_13AB4 ; if yes, branch
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| − | lea (SonAni_Run).l,a1 ; use running animation
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| − | cmpi.w #$600,d2 ; is Sonic at running speed?
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| − | bcc.s loc_13AB4 ; if yes, branch
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| − | lea (SonAni_Walk).l,a1 ; use walking animation
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| − | move.b d0,d1
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| − | lsr.b #1,d1
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| − | add.b d1,d0
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| − | </syntaxhighlight>
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| − |
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| − | ==Step 3: Not porting peelout animations (Optional)==
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| − |
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| − | Okay, here's the part where you don't add the peelout animation.
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| − | First, open \anim\Sonic.asm in your disasm.
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| − | Then, go to the spot just before '''SonAni_Walk: dc.b $FF, 8, 9, $A, $B, 6, 7, $FF''', and add:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | dc.w SonAni_SuperPeelout-SonicAniData ;20
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| − | </syntaxhighlight>
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| − |
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| − | Then at the very bottom of the file, but just before the even, add:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | SonAni_SuperPeelout: dc.b 0, 5, $8, $8, $8, $8, $8, $8, $8, $8, $9, $9, $9, $9, $9, $A, $A, $A, $21, $21, $1E, $1F, $20, $21, $1E, $1F, $20, $61, $5E, $5F, $60, $FE, 4, 0
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| − | </syntaxhighlight>
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| − |
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| − | Next, go back to the main ASM file and change all instances of #$21,$1C to #$20,$1C.
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| − |
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| − | ==Step 4: Fix a minor bug where it doesn't clear the time you stay in peelout mode==
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| − |
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| − | Finally, go to '''Hurt_ChkSpikes:''' and before this:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | move.w #0,$14(a0)
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| − | </syntaxhighlight>
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| − |
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| − | add this:
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| − |
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| − | <syntaxhighlight lang="asm">
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| − | move.w #0,($FFFFFFD4).w ; clear peelout time
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| − | </syntaxhighlight>
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| − |
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| − | That's it! You're done.
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| − |
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| − | {{S1Howtos}}
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