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The following guide was made by Tailsguy24.
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This is the page where you can test out stuff on the Wiki.
==How to Port Knuckles into Sonic 2==
 
It surprises me that nobody else took up responsibility for making this guide, considering I, as a major fan of hacks, have seen Knuckles implemented in Sonic 2 on more than one occasion. Today, I'll be explaining how you, too, can implement Knuckles in your Sonic 2 hack.
 
===What You'll Need===
 
*This guide (no duh, really)
 
*The Hg disassembly of Sonic 2
 
*The one known disassembly of Knuckles in Sonic 2, found on the long list of [[disassemblies]].
 
*The ConTEXT text editor (because Notepad will take WAY too long to process anything)
 
*Your favorite Genesis emulator (I recommend Kega Fusion but you can use any Genesis emulator you'd like)
 
  
===IMPORTANT NOTE===
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This page is NOT for drafting new articles. If you want to write up a new article and save it on the Wiki, but don't want to publish it in a main article, create a new article using your User namespace, e.g. User:JoeSchmoe/My_New_Article .
'''DO NOT''' try to rebuild the ROM once you've started this guide or you will get build errors.
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___________________________________________________________________________________________________
 
 
Also, there is quite a lot of code added in this tutorial and it '''will''' make the ASM file's size (and to an extent, the ROM's size) '''quite a bit''' bigger than they were before.
 
==Step 1: Creating the Knuckles object==
 
First, open up s2.asm in ConTEXT and search for "dc.l ObjNull." This should come up:
 
<asm>
 
                dc.l ObjNull ; Obj4C
 
                dc.l ObjNull ; Obj4D
 
                dc.l ObjNull ; Obj4E
 
                dc.l ObjNull ; Obj4F
 
</asm>
 
Change this line:
 
<asm>
 
                dc.l ObjNull ; Obj4C
 
</asm>
 
 
 
To this:
 
<asm>
 
                dc.l Obj4C  ; Knuckles
 
</asm>
 
 
 
We've created our Knuckles object. Now let's get started.
 
 
 
==Step 2: Creating the offset table==
 
Now that you have created your Knuckles object, go to whatever folder you saved the Knuckles in Sonic 2 disassembly to, open s2k.asm in ConTEXT, and scroll down or search until you find the following code:
 
<asm>
 
Obj01_Index: dc.w Obj01_Init-Obj01_Index   ; 0 ; ...
 
dc.w Obj01_Control-Obj01_Index   ; 1
 
dc.w Obj01_Hurt-Obj01_Index   ; 2
 
dc.w Obj01_Dead-Obj01_Index   ; 3
 
dc.w Obj01_Gone-Obj01_Index   ; 4
 
dc.w Obj01_Respawning-Obj01_Index ; 5
 
</asm>
 
Back in s2.asm, copy and paste the following piece of code above the description of the Masher object:
 
<asm>
 
; ----------------------------------------------------------------------------
 
; Object 01 - Knuckles
 
; ----------------------------------------------------------------------------
 
 
 
Obj01:
 
; a0=character
 
tst.w (Debug_placement_mode).w ; is debug mode being used?
 
beq.s Obj01_Normal ; if not, branch
 
jmp (DebugMode).l
 
; ---------------------------------------------------------------------------
 
; loc_19F5C:
 
Obj01_Normal:
 
moveq #0,d0
 
move.b routine(a0),d0
 
move.w Obj01_Index(pc,d0.w),d1
 
jmp Obj01_Index(pc,d1.w)
 
; End of function Obj01
 
 
 
; ----------------------------------------------------------------------------
 
</asm>
 
Now copy the code I mentioned earlier in this step, and paste it below the code displayed above. Then, replace all of the "dc.w"'s with "offsetTableEntry.w"'s, delete the "-Obj01_Index" on the end of each line, move all of the entries down one line, add "offsetTable" to the top, and change all of the 01's in the whole section of code to 4C's. If you're following this guide correctly, your code should look like this:
 
<asm>
 
; ----------------------------------------------------------------------------
 
; Object 4C - Knuckles
 
; ----------------------------------------------------------------------------
 
 
 
Obj4C:
 
; a0=character
 
tst.w (Debug_placement_mode).w ; is debug mode being used?
 
beq.s Obj4C_Normal ; if not, branch
 
jmp (DebugMode).l
 
; ---------------------------------------------------------------------------
 
; loc_19F5C:
 
Obj4C_Normal:
 
moveq #0,d0
 
move.b routine(a0),d0
 
move.w Obj4C_Index(pc,d0.w),d1
 
jmp Obj4C_Index(pc,d1.w)
 
; End of function Obj4C
 
 
 
; ----------------------------------------------------------------------------
 
Obj4C_Index:    offsetTable
 
        offsetTableEntry.w Obj4C_Init            ; 0
 
offsetTableEntry.w Obj4C_Control          ; 2
 
offsetTableEntry.w Obj4C_Hurt              ; 4
 
offsetTableEntry.w Obj4C_Dead            ; 6
 
offsetTableEntry.w Obj4C_Gone            ; 8
 
offsetTableEntry.w Obj4C_Respawning              ; $A
 
...
 
</asm>
 
Now that '''THAT''' is done and over with, let's continue to importing Knuckles' many modes (or whatever you people call them).
 
==Step 3: Obj4C_Init==
 
Going back to s2k.asm , you should see this piece of code right below the code I mentioned earlier in Step 2:
 
<asm>
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_Init:   ; ...
 
addq.b #2,$24(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.l #SK_Map_Knuckles,4(a0)   ; SK_Map_Knuckles
 
move.b #2,$18(a0)
 
move.b #$18,$19(a0)
 
move.b #4,1(a0)
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE30).w
 
bne.s Obj01_Init_Continued
 
move.w #$780,2(a0)
 
bsr.w Adjust2PArtPointer2_Useless
 
move.b #$C,$3E(a0)
 
move.b #$D,$3F(a0)
 
move.w 8(a0),($FFFFFE32).w
 
move.w $C(a0),($FFFFFE34).w
 
move.w 2(a0),($FFFFFE3C).w
 
move.w $3E(a0),($FFFFFE3E).w
 
 
 
Obj01_Init_Continued:   ; ...
 
move.b #0,$2C(a0)
 
move.b #4,$2D(a0)
 
move.b #0,($FFFFFE19).w
 
move.b #$1E,$28(a0)
 
sub.w #$20,8(a0)
 
add.w #4,$C(a0)
 
move.w #0,($FFFFEED2).w
 
move.w #$3F,d2
 
 
 
loc_3153EC:   ; ...
 
bsr.w Knuckles_RecordPositions
 
subq.w #4,a1
 
move.l #0,(a1)
 
dbf d2,loc_3153EC
 
add.w #$20,8(a0)
 
sub.w #4,$C(a0)
 
</asm>
 
All we need to do is copy this, paste it below our already ported code, and change all of the 01's to 4C's. Now you should have this below the offset table:
 
<asm>
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_Init:   ; ...
 
addq.b #2,$24(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.l #SK_Map_Knuckles,4(a0)   ; SK_Map_Knuckles
 
move.b #2,$18(a0)
 
move.b #$18,$19(a0)
 
move.b #4,1(a0)
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE30).w
 
bne.s Obj4C_Init_Continued
 
move.w #$780,2(a0)
 
bsr.w Adjust2PArtPointer2_Useless
 
move.b #$C,$3E(a0)
 
move.b #$D,$3F(a0)
 
move.w 8(a0),($FFFFFE32).w
 
move.w $C(a0),($FFFFFE34).w
 
move.w 2(a0),($FFFFFE3C).w
 
move.w $3E(a0),($FFFFFE3E).w
 
 
 
Obj4C_Init_Continued:   ; ...
 
move.b #0,$2C(a0)
 
move.b #4,$2D(a0)
 
move.b #0,($FFFFFE19).w
 
move.b #$1E,$28(a0)
 
sub.w #$20,8(a0)
 
add.w #4,$C(a0)
 
move.w #0,($FFFFEED2).w
 
move.w #$3F,d2
 
 
 
loc_3153EC:   ; ...
 
bsr.w Knuckles_RecordPositions
 
subq.w #4,a1
 
move.l #0,(a1)
 
dbf d2,loc_3153EC
 
add.w #$20,8(a0)
 
sub.w #4,$C(a0)
 
</asm>
 
==Step 4: Obj4C_Control==
 
This one is the most important. It actually makes up approximately 90% of the code for Knuckles. Therefore, we definitely need to port this.
 
===Step 4: Part 1: Starting off===
 
First, we have to modify the Obj01_Modes offset table from s2k.asm so we can use it for our Knuckles. Below the code mentioned above, you should see this:
 
<asm>
 
Obj01_Control:   ; ...
 
tst.w ($FFFFFFDA).w
 
beq.s loc_315422
 
btst #4,($FFFFF605).w
 
beq.s loc_315422
 
move.w #1,($FFFFFE08).w
 
clr.b ($FFFFF7CC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315422:   ; ...
 
tst.b ($FFFFF7CC).w
 
bne.s loc_31542E
 
move.w ($FFFFF604).w,($FFFFF602).w
 
 
 
loc_31542E:   ; ...
 
btst #0,$2A(a0)
 
beq.s loc_31543E
 
move.b #0,$21(a0)
 
bra.s loc_315450
 
; ---------------------------------------------------------------------------
 
 
 
loc_31543E:   ; ...
 
moveq #0,d0
 
move.b $22(a0),d0
 
 
 
and.w #6,d0
 
move.w Obj01_Modes(pc,d0.w),d1
 
jsr Obj01_Modes(pc,d1.w)
 
 
 
loc_315450:   ; ...
 
cmp.w #$FF00,($FFFFEECC).w
 
bne.s loc_31545E
 
and.w #$7FF,$C(a0)
 
 
 
loc_31545E:   ; ...
 
bsr.s Knuckles_Display
 
bsr.w Knuckles_Super
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Water
 
move.b ($FFFFF768).w,$36(a0)
 
move.b ($FFFFF76A).w,$37(a0)
 
tst.b ($FFFFF7C7).w
 
beq.s loc_31548A
 
tst.b $1C(a0)
 
bne.s loc_31548A
 
move.b $1D(a0),$1C(a0)
 
 
 
loc_31548A:   ; ...
 
bsr.w Knuckles_Animate
 
tst.b $2A(a0)
 
bmi.s loc_31549A
 
jsr TouchResponse
 
 
 
loc_31549A:   ; ...
 
bra.w LoadKnucklesDynPLC
 
; ---------------------------------------------------------------------------
 
Obj01_Modes: dc.w Obj01_MdNormal-Obj01_Modes   ; 0 ; ...
 
dc.w Obj01_MdAir-Obj01_Modes   ; 1
 
dc.w Obj01_MdRoll-Obj01_Modes   ; 2
 
dc.w Obj01_MdJump-Obj01_Modes   ; 3
 
</asm>
 
 
 
Do the same thing that was done with the code in Step 2. It should now look like this:
 
<asm>
 
Obj4C_Control:   ; ...
 
tst.w ($FFFFFFDA).w
 
beq.s loc_315422
 
btst #4,($FFFFF605).w
 
beq.s loc_315422
 
move.w #1,($FFFFFE08).w
 
clr.b ($FFFFF7CC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315422:   ; ...
 
tst.b ($FFFFF7CC).w
 
bne.s loc_31542E
 
move.w ($FFFFF604).w,($FFFFF602).w
 
 
 
loc_31542E:   ; ...
 
btst #0,$2A(a0)
 
beq.s loc_31543E
 
move.b #0,$21(a0)
 
bra.s loc_315450
 
; ---------------------------------------------------------------------------
 
 
 
loc_31543E:   ; ...
 
moveq #0,d0
 
move.b $22(a0),d0
 
and.w #6,d0
 
move.w Obj4C_Modes(pc,d0.w),d1
 
jsr Obj4C_Modes(pc,d1.w)
 
 
 
loc_315450:   ; ...
 
cmp.w #$FF00,($FFFFEECC).w
 
bne.s loc_31545E
 
and.w #$7FF,$C(a0)
 
 
 
loc_31545E:   ; ...
 
bsr.s Knuckles_Display
 
bsr.w Knuckles_Super
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Water
 
move.b ($FFFFF768).w,$36(a0)
 
move.b ($FFFFF76A).w,$37(a0)
 
tst.b ($FFFFF7C7).w
 
beq.s loc_31548A
 
tst.b $1C(a0)
 
bne.s loc_31548A
 
move.b $1D(a0),$1C(a0)
 
 
 
loc_31548A:   ; ...
 
bsr.w Knuckles_Animate
 
tst.b $2A(a0)
 
bmi.s loc_31549A
 
jsr TouchResponse
 
 
 
loc_31549A:   ; ...
 
bra.w LoadKnucklesDynPLC
 
; ---------------------------------------------------------------------------
 
Obj4C_Modes: offsetTable
 
                offsetTableEntry.w Obj4C_MdNormal_Checks  ; 0 ; not airborne or rolling
 
offsetTableEntry.w Obj4C_MdAir          ; 2 ; airborne
 
offsetTableEntry.w Obj4C_MdRoll        ; 4 ; rolling
 
offsetTableEntry.w Obj4C_MdJump        ; 6 ; jumping
 
</asm>
 
===Step 4: Part 2: Obj4C_MdNormal===
 
Back to s2k.asm! The next bit of code you'll want to find is this:
 
<asm>
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Display:   ; ...
 
move.w $30(a0),d0
 
beq.s Obj01_Display
 
subq.w #1,$30(a0)
 
lsr.w #3,d0
 
bcc.s Obj01_CheckInvincibility
 
 
 
Obj01_Display:   ; ...
 
jsr DisplaySprite
 
 
 
Obj01_CheckInvincibility:   ; ...
 
btst #1,$2B(a0)
 
beq.s Obj01_CheckSpeedShoes
 
tst.w $32(a0)
 
beq.s Obj01_CheckSpeedShoes
 
subq.w #1,$32(a0)
 
bne.s Obj01_CheckSpeedShoes
 
tst.b ($FFFFF7AA).w
 
bne.s Obj01_RemoveInvincibility
 
cmp.b #$C,$28(a0)
 
bcs.s Obj01_RemoveInvincibility
 
move.w ($FFFFFF90).w,d0
 
jsr PlayMusic
 
 
 
Obj01_RemoveInvincibility:   ; ...
 
bclr #1,$2B(a0)
 
 
 
Obj01_CheckSpeedShoes:   ; ...
 
btst #2,$2B(a0)
 
beq.s Obj01_ExitCheck
 
tst.w $34(a0)
 
beq.s Obj01_ExitCheck
 
subq.w #1,$34(a0)
 
bne.s Obj01_ExitCheck
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s Obj01_RemoveSpeedShoes
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
Obj01_RemoveSpeedShoes:   ; ...
 
bclr #2,$2B(a0)
 
move.w #$FC,d0
 
jmp PlayMusic
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_ExitCheck:   ; ...
 
rts
 
; End of function Knuckles_Display
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RecordPositions:   ; ...
 
move.w ($FFFFEED2).w,d0
 
lea ($FFFFE500).w,a1
 
lea (a1,d0.w),a1
 
move.w 8(a0),(a1)+
 
move.w $C(a0),(a1)+
 
addq.b #4,($FFFFEED3).w
 
lea ($FFFFE400).w,a1
 
lea (a1,d0.w),a1
 
move.w ($FFFFF602).w,(a1)+
 
move.w $22(a0),(a1)+
 
rts
 
; End of function Knuckles_RecordPositions
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Water:   ; ...
 
tst.b ($FFFFF730).w
 
bne.s Obj01_InWater
 
 
 
return_31556C:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_InWater:   ; ...
 
move.w ($FFFFF646).w,d0
 
cmp.w $C(a0),d0
 
bge.s Obj01_OutWater
 
bset #6,$22(a0)
 
bne.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.b #$A,($FFFFD080).w
 
move.b #$81,($FFFFD0A8).w
 
move.l a0,($FFFFD0BC).w
 
move.w #$300,($FFFFF760).w
 
move.w #6,($FFFFF762).w
 
move.w #$40,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_3155C0
 
move.w #$400,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$60,($FFFFF764).w
 
 
 
loc_3155C0:   ; ...
 
asr $10(a0)
 
asr $12(a0)
 
asr $12(a0)
 
beq.s return_31556C
 
move.w #$100,($FFFFD11C).w
 
move.w #$AA,d0
 
jmp PlaySound
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_OutWater:   ; ...
 
bclr #6,$22(a0)
 
beq.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_315616
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
loc_315616:   ; ...
 
cmp.b #4,$24(a0)
 
beq.s loc_315622
 
asl $12(a0)
 
 
 
loc_315622:   ; ...
 
tst.w $12(a0)
 
beq.w return_31556C
 
move.w #$100,($FFFFD11C).w
 
move.l a0,a1
 
bsr.w ResumeMusic
 
cmp.w #$F000,$12(a0)
 
bgt.s loc_315644
 
move.w #$F000,$12(a0)
 
 
 
loc_315644:   ; ...
 
move.w #$AA,d0
 
jmp PlaySound
 
; End of function Knuckles_Water
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj01_MdNormal:   ; ...
 
bsr.w Knuckles_Spindash
 
bsr.w Knuckles_Jump
 
bsr.w Knuckles_SlopeResist
 
bsr.w Knuckles_Move
 
bsr.w Knuckles_Roll
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w AnglePos
 
bsr.w Knuckles_SlopeRepel
 
rts
 
; End of function Obj01_MdNormal
 
</asm>
 
Put that below the code we've already ported, then go through it and replace each and every "Obj01" with "Obj4C." You should get this:
 
<asm>
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Display:   ; ...
 
move.w $30(a0),d0
 
beq.s Obj4C_Display
 
subq.w #1,$30(a0)
 
lsr.w #3,d0
 
bcc.s Obj4C_CheckInvincibility
 
 
 
Obj4C_Display:   ; ...
 
jsr DisplaySprite
 
 
 
Obj4C_CheckInvincibility:   ; ...
 
btst #1,$2B(a0)
 
beq.s Obj4C_CheckSpeedShoes
 
tst.w $32(a0)
 
beq.s Obj4C_CheckSpeedShoes
 
subq.w #1,$32(a0)
 
bne.s Obj4C_CheckSpeedShoes
 
tst.b ($FFFFF7AA).w
 
bne.s Obj4C_RemoveInvincibility
 
cmp.b #$C,$28(a0)
 
bcs.s Obj4C_RemoveInvincibility
 
move.w ($FFFFFF90).w,d0
 
jsr PlayMusic
 
 
 
Obj4C_RemoveInvincibility:   ; ...
 
bclr #1,$2B(a0)
 
 
 
Obj4C_CheckSpeedShoes:   ; ...
 
btst #2,$2B(a0)
 
beq.s Obj4C_ExitCheck
 
tst.w $34(a0)
 
beq.s Obj4C_ExitCheck
 
subq.w #1,$34(a0)
 
bne.s Obj4C_ExitCheck
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s Obj4C_RemoveSpeedShoes
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
Obj4C_RemoveSpeedShoes:   ; ...
 
bclr #2,$2B(a0)
 
move.w #$FC,d0
 
jmp PlayMusic
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_ExitCheck:   ; ...
 
rts
 
; End of function Knuckles_Display
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RecordPositions:   ; ...
 
move.w ($FFFFEED2).w,d0
 
lea ($FFFFE500).w,a1
 
lea (a1,d0.w),a1
 
move.w 8(a0),(a1)+
 
move.w $C(a0),(a1)+
 
addq.b #4,($FFFFEED3).w
 
lea ($FFFFE400).w,a1
 
lea (a1,d0.w),a1
 
move.w ($FFFFF602).w,(a1)+
 
move.w $22(a0),(a1)+
 
rts
 
; End of function Knuckles_RecordPositions
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Water:   ; ...
 
tst.b ($FFFFF730).w
 
bne.s Obj4C_InWater
 
 
 
return_31556C:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_InWater:   ; ...
 
move.w ($FFFFF646).w,d0
 
cmp.w $C(a0),d0
 
bge.s Obj4C_OutWater
 
bset #6,$22(a0)
 
bne.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.b #$A,($FFFFD080).w
 
move.b #$81,($FFFFD0A8).w
 
move.l a0,($FFFFD0BC).w
 
move.w #$300,($FFFFF760).w
 
move.w #6,($FFFFF762).w
 
move.w #$40,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_3155C0
 
move.w #$400,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$60,($FFFFF764).w
 
 
 
loc_3155C0:   ; ...
 
asr $10(a0)
 
asr $12(a0)
 
asr $12(a0)
 
beq.s return_31556C
 
move.w #$100,($FFFFD11C).w
 
move.w #$AA,d0
 
jmp PlaySound
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_OutWater:   ; ...
 
bclr #6,$22(a0)
 
beq.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_315616
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
loc_315616:   ; ...
 
cmp.b #4,$24(a0)
 
beq.s loc_315622
 
asl $12(a0)
 
 
 
loc_315622:   ; ...
 
tst.w $12(a0)
 
beq.w return_31556C
 
                move.w #$100,($FFFFD11C).w
 
move.l a0,a1
 
bsr.w ResumeMusic
 
cmp.w #$F000,$12(a0)
 
bgt.s loc_315644
 
move.w #$F000,$12(a0)
 
 
 
loc_315644:   ; ...
 
move.w #$AA,d0
 
jmp PlaySound
 
; End of function Knuckles_Water
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj4C_MdNormal:   ; ...
 
bsr.w Knuckles_Spindash
 
bsr.w Knuckles_Jump
 
bsr.w Knuckles_SlopeResist
 
bsr.w Knuckles_Move
 
bsr.w Knuckles_Roll
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w AnglePos
 
bsr.w Knuckles_SlopeRepel
 
rts
 
; End of function Obj4C_MdNormal
 
</asm>
 
And we're done with the Obj4C_MdNormal_Checks subroutine! Now we can get the rest of the code in without worrying about errors, provided you're following this guide correctly.
 
===Step 4: Part 3: Obj4C_MdAir===
 
Not very complicated, just find this, place it below the ported code and replace each "Obj01" with a "Obj4C."
 
<asm>
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj01_MdAir:   ; ...
 
tst.b $21(a0)
 
bne.s Obj01_MdAir_Gliding
 
bsr.w Knuckles_JumpHeight
 
bsr.w Knuckles_ChgJumpDir
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMoveAndFall
 
btst #6,$22(a0)
 
beq.s loc_31569C
 
sub.w #$28,$12(a0)
 
 
 
loc_31569C:   ; ...
 
bsr.w Knuckles_JumpAngle
 
bsr.w Knuckles_DoLevelCollision
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_MdAir_Gliding:   ; ...
 
bsr.w Knuckles_GlideSpeedControl
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w Knuckles_GlideControl
 
 
 
return_3156B8:   ; ...
 
rts
 
; End of function Obj01_MdAir
 
 
 
</asm>
 
You should end up with this:
 
<asm>
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj4C_MdAir:   ; ...
 
tst.b $21(a0)
 
bne.s Obj4C_MdAir_Gliding
 
bsr.w Knuckles_JumpHeight
 
bsr.w Knuckles_ChgJumpDir
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMoveAndFall
 
btst #6,$22(a0)
 
beq.s loc_31569C
 
sub.w #$28,$12(a0)
 
 
 
loc_31569C:   ; ...
 
bsr.w Knuckles_JumpAngle
 
bsr.w Knuckles_DoLevelCollision
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_MdAir_Gliding:   ; ...
 
bsr.w Knuckles_GlideSpeedControl
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w Knuckles_GlideControl
 
 
 
return_3156B8:   ; ...
 
rts
 
; End of function Obj4C_MdAir
 
</asm>
 
I told you it wasn't complicated.
 
 
 
===Step 4: Part 4: Everything having to do with Knuckles' gliding===
 
And we don't even need to change anything. WOOHOO!
 
<asm>
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_GlideControl:   ; ...
 
 
 
; FUNCTION CHUNK AT 00315C40 SIZE 0000003C BYTES
 
 
 
move.b $21(a0),d0
 
beq.s return_3156B8
 
cmp.b #2,d0
 
beq.w Knuckles_FallingFromGlide
 
cmp.b #3,d0
 
beq.w Knuckles_Sliding
 
cmp.b #4,d0
 
beq.w Knuckles_Climbing_Wall
 
cmp.b #5,d0
 
beq.w Knuckles_Climbing_Up
 
 
 
Knuckles_NormalGlide:
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
bsr.w Knuckles_DoLevelCollision2
 
btst #5,($FFFFF7AC).w
 
bne.w Knuckles_BeginClimb
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
btst #1,($FFFFF7AC).w
 
beq.s Knuckles_BeginSlide
 
move.b ($FFFFF602).w,d0
 
and.b #$70,d0
 
bne.s loc_31574C
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
bclr #0,$22(a0)
 
tst.w $10(a0)
 
bpl.s loc_315736
 
bset #0,$22(a0)
 
 
 
loc_315736:   ; ...
 
asr $10(a0)
 
asr $10(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_31574C:   ; ...
 
bra.w sub_315C7C
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BeginSlide:   ; ...
 
bclr #0,$22(a0)
 
tst.w $10(a0)
 
bpl.s loc_315762
 
bset #0,$22(a0)
 
 
 
loc_315762:   ; ...
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s loc_315780
 
move.w $14(a0),$10(a0)
 
move.w #0,$12(a0)
 
bra.w Knuckles_ResetOnFloor_Part2
 
; ---------------------------------------------------------------------------
 
 
 
loc_315780:   ; ...
 
move.b #3,$21(a0)
 
move.b #$CC,$1A(a0)
 
move.b #$7F,$1E(a0)
 
move.b #0,$1B(a0)
 
cmp.b #$C,$28(a0)
 
bcs.s return_3157AC
 
move.b #6,($FFFFD124).w
 
move.b #$15,($FFFFD11A).w
 
 
 
return_3157AC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BeginClimb:   ; ...
 
tst.b ($FFFFF7AD).w
 
bmi.w loc_31587A
 
move.b $3F(a0),d5
 
move.b $1F(a0),d0
 
add.b #$40,d0
 
bpl.s loc_3157D8
 
bset #0,$22(a0)
 
bsr.w CheckLeftCeilingDist
 
or.w d0,d1
 
bne.s Knuckles_FallFromGlide
 
addq.w #1,8(a0)
 
bra.s loc_3157E8
 
; ---------------------------------------------------------------------------
 
 
 
loc_3157D8:   ; ...
 
bclr #0,$22(a0)
 
bsr.w CheckRightCeilingDist
 
or.w d0,d1
 
bne.w loc_31586A
 
 
 
loc_3157E8:   ; ...
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315804
 
cmp.w #$480,$14(a0)
 
bcs.s loc_315804
 
nop
 
 
 
loc_315804:   ; ...
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b #4,$21(a0)
 
move.b #$B7,$1A(a0)
 
move.b #$7F,$1E(a0)
 
move.b #0,$1B(a0)
 
move.b #3,$1F(a0)
 
move.w 8(a0),$A(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_FallFromGlide:   ; ...
 
move.w 8(a0),d3
 
move.b $16(a0),d0
 
ext.w d0
 
sub.w d0,d3
 
subq.w #1,d3
 
 
 
loc_31584A:   ; ...
 
move.w $C(a0),d2
 
sub.w #$B,d2
 
jsr ChkFloorEdge_Part2
 
tst.w d1
 
bmi.s loc_31587A
 
cmp.w #$C,d1
 
bcc.s loc_31587A
 
add.w d1,$C(a0)
 
bra.w loc_3157E8
 
; ---------------------------------------------------------------------------
 
 
 
loc_31586A:   ; ...
 
move.w 8(a0),d3
 
move.b $16(a0),d0
 
ext.w d0
 
add.w d0,d3
 
addq.w #1,d3
 
bra.s loc_31584A
 
; ---------------------------------------------------------------------------
 
 
 
loc_31587A:   ; ...
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
bset #1,($FFFFF7AC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_FallingFromGlide:   ; ...
 
bsr.w Knuckles_ChgJumpDir
 
add.w #$38,$12(a0)
 
btst #6,$22(a0)
 
beq.s loc_3158B2
 
sub.w #$28,$12(a0)
 
 
 
loc_3158B2:   ; ...
 
bsr.w Knuckles_DoLevelCollision2
 
btst #1,($FFFFF7AC).w
 
bne.s return_315900
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b $16(a0),d0
 
sub.b #$13,d0
 
ext.w d0
 
add.w d0,$C(a0)
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s loc_3158F0
 
bra.w Knuckles_ResetOnFloor_Part2
 
; ---------------------------------------------------------------------------
 
 
 
loc_3158F0:   ; ...
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.w #$F,$2E(a0)
 
move.b #$23,$1C(a0)
 
 
 
return_315900:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Sliding:   ; ...
 
move.b ($FFFFF602).w,d0
 
and.b #$70,d0
 
beq.s loc_315926
 
tst.w $10(a0)
 
bpl.s loc_31591E
 
add.w #$20,$10(a0)
 
bmi.s loc_31591C
 
bra.s loc_315926
 
; ---------------------------------------------------------------------------
 
 
 
loc_31591C:   ; ...
 
bra.s loc_315958
 
; ---------------------------------------------------------------------------
 
 
 
loc_31591E:   ; ...
 
sub.w #$20,$10(a0)
 
bpl.s loc_315958
 
 
 
loc_315926:   ; ...
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b $16(a0),d0
 
sub.b #$13,d0
 
ext.w d0
 
add.w d0,$C(a0)
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.w #$F,$2E(a0)
 
move.b #$22,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315958:   ; ...
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
bsr.w Knuckles_DoLevelCollision2
 
bsr.w Player_CheckFloor
 
cmp.w #$E,d1
 
bge.s loc_315988
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315988:   ; ...
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
bset #1,($FFFFF7AC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Climbing_Wall:   ; ...
 
tst.b ($FFFFF7AD).w
 
bmi.w loc_315BAE
 
move.w 8(a0),d0
 
cmp.w $A(a0),d0
 
bne.w loc_315BAE
 
btst #3,$22(a0)
 
bne.w loc_315BAE
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.l #$FFFFD600,($FFFFF796).w
 
cmp.b #$D,$3F(a0)
 
beq.s loc_3159F0
 
move.l #$FFFFD900,($FFFFF796).w
 
 
 
loc_3159F0:   ; ...
 
move.b $3F(a0),d5
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
moveq #0,d1
 
btst #0,($FFFFF602).w
 
beq.w loc_315A76
 
move.w $C(a0),d2
 
sub.w #$B,d2
 
bsr.w sub_315C22
 
cmp.w #4,d1
 
bge.w Knuckles_ClimbUp   ; Climb onto the floor above you
 
tst.w d1
 
bne.w loc_315B30
 
move.b $3F(a0),d5
 
move.w $C(a0),d2
 
subq.w #8,d2
 
move.w 8(a0),d3
 
bsr.w sub_3192E6   ; Doesn't exist in S2
 
tst.w d1
 
bpl.s loc_315A46
 
sub.w d1,$C(a0)
 
moveq #1,d1
 
bra.w loc_315B04
 
; ---------------------------------------------------------------------------
 
 
 
loc_315A46:   ; ...
 
subq.w #1,$C(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315A54
 
subq.w #1,$C(a0)
 
 
 
loc_315A54:   ; ...
 
moveq #1,d1
 
move.w ($FFFFEECC).w,d0
 
cmp.w #-$100,d0
 
beq.w loc_315B04
 
add.w #$10,d0
 
cmp.w $C(a0),d0
 
ble.w loc_315B04
 
move.w d0,$C(a0)
 
bra.w loc_315B04
 
; ---------------------------------------------------------------------------
 
 
 
loc_315A76:   ; ...
 
btst #1,($FFFFF602).w
 
beq.w loc_315B04
 
cmp.b #$BD,$1A(a0)
 
bne.s loc_315AA2
 
move.b #$B7,$1A(a0)
 
addq.w #3,$C(a0)
 
subq.w #3,8(a0)
 
btst #0,$22(a0)
 
beq.s loc_315AA2
 
addq.w #6,8(a0)
 
 
 
loc_315AA2:   ; ...
 
move.w $C(a0),d2
 
add.w #$B,d2
 
bsr.w sub_315C22
 
tst.w d1
 
bne.w loc_315BAE
 
move.b $3E(a0),d5
 
move.w $C(a0),d2
 
add.w #9,d2
 
move.w 8(a0),d3
 
bsr.w sub_318FF6
 
tst.w d1
 
bpl.s loc_315AF4
 
add.w d1,$C(a0)
 
move.b ($FFFFF768).w,$26(a0)
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.b #5,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315AF4:   ; ...
 
addq.w #1,$C(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315B02
 
addq.w #1,$C(a0)
 
 
 
loc_315B02:   ; ...
 
moveq #-1,d1
 
 
 
loc_315B04:   ; ...
 
tst.w d1
 
beq.s loc_315B30
 
subq.b #1,$1F(a0)
 
bpl.s loc_315B30
 
move.b #3,$1F(a0)
 
add.b $1A(a0),d1
 
cmp.b #$B7,d1
 
bcc.s loc_315B22
 
move.b #$BC,d1
 
 
 
loc_315B22:   ; ...
 
cmp.b #$BC,d1
 
bls.s loc_315B2C
 
move.b #$B7,d1
 
 
 
loc_315B2C:   ; ...
 
move.b d1,$1A(a0)
 
 
 
loc_315B30:   ; ...
 
move.b #$20,$1E(a0)
 
move.b #0,$1B(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.w ($FFFFF602).w,d0
 
and.w #$70,d0
 
beq.s return_315B94
 
move.w #$FC80,$12(a0)
 
move.w #$400,$10(a0)
 
bchg #0,$22(a0)
 
bne.s loc_315B6A
 
neg.w $10(a0)
 
 
 
loc_315B6A:   ; ...
 
bset #1,$22(a0)
 
move.b #1,$3C(a0)
 
move.b #$E,$16(a0)
 
move.b #7,$17(a0)
 
move.b #2,$1C(a0)
 
bset #2,$22(a0)
 
move.b #0,$21(a0)
 
 
 
return_315B94:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_ClimbUp:   ; ...
 
move.b #5,$21(a0)   ; Climb up to the floor above you
 
cmp.b #$BD,$1A(a0)
 
beq.s return_315BAC
 
move.b #0,$1F(a0)
 
bsr.s sub_315BDA
 
 
 
return_315BAC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315BAE:   ; ...
 
move.b #2,$21(a0)
 
move.w #$2121,$1C(a0)
 
move.b #$CB,$1A(a0)
 
move.b #7,$1E(a0)
 
move.b #1,$1B(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; End of function Knuckles_GlideControl
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315BDA:   ; ...
 
moveq #0,d0
 
move.b $1F(a0),d0
 
lea word_315C12(pc,d0.w),a1
 
move.b (a1)+,$1A(a0)
 
move.b (a1)+,d0
 
ext.w d0
 
btst #0,$22(a0)
 
beq.s loc_315BF6
 
neg.w d0
 
 
 
loc_315BF6:   ; ...
 
add.w d0,8(a0)
 
move.b (a1)+,d1
 
ext.w d1
 
add.w d1,$C(a0)
 
move.b (a1)+,$1E(a0)
 
addq.b #4,$1F(a0)
 
move.b #0,$1B(a0)
 
rts
 
; End of function sub_315BDA
 
 
 
; ---------------------------------------------------------------------------
 
word_315C12: dc.w $BD03,$FD06,$BE08,$F606,$BFF8,$F406,$D208,$FB06; 0 ; ...
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315C22:   ; ...
 
 
 
; FUNCTION CHUNK AT 00319208 SIZE 00000020 BYTES
 
; FUNCTION CHUNK AT 003193D2 SIZE 00000024 BYTES
 
 
 
move.b $3F(a0),d5
 
btst #0,$22(a0)
 
bne.s loc_315C36
 
move.w 8(a0),d3
 
bra.w loc_319208
 
; ---------------------------------------------------------------------------
 
 
 
loc_315C36:   ; ...
 
move.w 8(a0),d3
 
subq.w #1,d3
 
bra.w loc_3193D2
 
; End of function sub_315C22
 
 
 
; ---------------------------------------------------------------------------
 
; START OF FUNCTION CHUNK FOR Knuckles_GlideControl
 
 
 
Knuckles_Climbing_Up:   ; ...
 
tst.b $1E(a0)
 
bne.s return_315C7A
 
bsr.w sub_315BDA
 
cmp.b #$10,$1F(a0)
 
bne.s return_315C7A
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
btst #0,$22(a0)
 
beq.s loc_315C70
 
subq.w #1,8(a0)
 
 
 
loc_315C70:   ; ...
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.b #5,$1C(a0)
 
 
 
return_315C7A:   ; ...
 
rts
 
; END OF FUNCTION CHUNK FOR Knuckles_GlideControl
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315C7C:   ; ...
 
move.b #$20,$1E(a0)
 
move.b #0,$1B(a0)
 
move.w #$2020,$1C(a0)
 
bclr #5,$22(a0)
 
bclr #0,$22(a0)
 
moveq #0,d0
 
move.b $1F(a0),d0
 
add.b #$10,d0
 
lsr.w #5,d0
 
move.b byte_315CC2(pc,d0.w),d1
 
move.b d1,$1A(a0)
 
cmp.b #$C4,d1
 
bne.s return_315CC0
 
bset #0,$22(a0)
 
move.b #$C0,$1A(a0)
 
 
 
return_315CC0:   ; ...
 
rts
 
; End of function sub_315C7C
 
 
 
; ---------------------------------------------------------------------------
 
byte_315CC2: dc.b $C0,$C1,$C2,$C3,$C4,$C3,$C2,$C1; 0 ; ...
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_GlideSpeedControl:   ; ...
 
cmp.b #1,$21(a0)
 
bne.w loc_315D88
 
move.w $14(a0),d0
 
cmp.w #$400,d0
 
bcc.s loc_315CE2
 
addq.w #8,d0
 
bra.s loc_315CFC
 
; ---------------------------------------------------------------------------
 
 
 
loc_315CE2:   ; ...
 
cmp.w #$1800,d0
 
bcc.s loc_315CFC
 
move.b $1F(a0),d1
 
and.b #$7F,d1
 
bne.s loc_315CFC
 
addq.w #4,d0
 
tst.b ($FFFFFE19).w
 
beq.s loc_315CFC
 
addq.w #8,d0
 
 
 
loc_315CFC:   ; ...
 
move.w d0,$14(a0)
 
move.b $1F(a0),d0
 
btst #2,($FFFFF602).w
 
beq.s loc_315D1C
 
cmp.b #$80,d0
 
beq.s loc_315D1C
 
tst.b d0
 
bpl.s loc_315D18
 
neg.b d0
 
 
 
loc_315D18:   ; ...
 
addq.b #2,d0
 
bra.s loc_315D3A
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D1C:   ; ...
 
btst #3,($FFFFF602).w
 
beq.s loc_315D30
 
tst.b d0
 
beq.s loc_315D30
 
bmi.s loc_315D2C
 
neg.b d0
 
 
 
loc_315D2C:   ; ...
 
addq.b #2,d0
 
bra.s loc_315D3A
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D30:   ; ...
 
move.b d0,d1
 
and.b #$7F,d1
 
beq.s loc_315D3A
 
addq.b #2,d0
 
 
 
loc_315D3A:   ; ...
 
move.b d0,$1F(a0)
 
move.b $1F(a0),d0
 
jsr CalcSine
 
muls.w $14(a0),d1
 
asr.l #8,d1
 
move.w d1,$10(a0)
 
cmp.w #$80,$12(a0)
 
blt.s loc_315D62
 
sub.w #$20,$12(a0)
 
bra.s loc_315D68
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D62:   ; ...
 
add.w #$20,$12(a0)
 
 
 
loc_315D68:   ; ...
 
move.w ($FFFFEECC).w,d0
 
cmp.w #$FF00,d0
 
beq.w loc_315D88
 
add.w #$10,d0
 
cmp.w $C(a0),d0
 
ble.w loc_315D88
 
asr $10(a0)
 
asr $14(a0)
 
 
 
loc_315D88:   ; ...
 
cmp.w #$60,($FFFFEED8).w
 
beq.s return_315D9A
 
bcc.s loc_315D96
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_315D96:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
return_315D9A:   ; ...
 
rts
 
; End of function Knuckles_GlideSpeedControl
 
 
 
; ---------------------------------------------------------------------------
 
</asm>
 
==Just to Recap==
 
At this point, you should have this code ported:
 
<asm>
 
; ----------------------------------------------------------------------------
 
; Object 4C - Knuckles
 
; ----------------------------------------------------------------------------
 
 
 
Obj4C:
 
; a0=character
 
tst.w (Debug_placement_mode).w ; is debug mode being used?
 
beq.s Obj4C_Normal ; if not, branch
 
jmp (DebugMode).l
 
; ---------------------------------------------------------------------------
 
; loc_19F5C:
 
Obj4C_Normal:
 
moveq #0,d0
 
move.b routine(a0),d0
 
move.w Obj4C_Index(pc,d0.w),d1
 
jmp Obj4C_Index(pc,d1.w)
 
; End of function Obj4C
 
 
 
; ----------------------------------------------------------------------------
 
Obj4C_Index:    offsetTable
 
        offsetTableEntry.w Obj4C_Init            ; 0
 
offsetTableEntry.w Obj4C_Control          ; 2
 
offsetTableEntry.w Obj4C_Hurt              ; 4
 
offsetTableEntry.w Obj4C_Dead            ; 6
 
offsetTableEntry.w Obj4C_Gone            ; 8
 
offsetTableEntry.w Obj4C_Respawning              ; $A
 
; ----------------------------------------------------------------------------
 
 
 
Obj4C_Init:                                      ; ...
 
addq.b #2,$24(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.l #SK_Map_Knuckles,4(a0)   ; SK_Map_Knuckles
 
move.b #2,$18(a0)
 
move.b #$18,$19(a0)
 
move.b #4,1(a0)
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE30).w
 
bne.s Obj4C_Init_Continued
 
move.w #$780,2(a0)
 
bsr.w Adjust2PArtPointer2_Useless
 
move.b #$C,$3E(a0)
 
move.b #$D,$3F(a0)
 
move.w 8(a0),($FFFFFE32).w
 
move.w $C(a0),($FFFFFE34).w
 
move.w 2(a0),($FFFFFE3C).w
 
move.w $3E(a0),($FFFFFE3E).w
 
 
 
Obj4C_Init_Continued:   ; ...
 
move.b #0,$2C(a0)
 
move.b #4,$2D(a0)
 
move.b #0,($FFFFFE19).w
 
move.b #$1E,$28(a0)
 
sub.w #$20,8(a0)
 
add.w #4,$C(a0)
 
move.w #0,($FFFFEED2).w
 
move.w #$3F,d2
 
 
 
loc_3153EC:   ; ...
 
bsr.w Knuckles_RecordPositions
 
subq.w #4,a1
 
move.l #0,(a1)
 
dbf d2,loc_3153EC
 
add.w #$20,8(a0)
 
sub.w #4,$C(a0)
 
 
 
Obj4C_Control:   ; ...
 
tst.w ($FFFFFFDA).w
 
beq.s loc_315422
 
btst #4,($FFFFF605).w
 
beq.s loc_315422
 
move.w #1,($FFFFFE08).w
 
clr.b ($FFFFF7CC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315422:   ; ...
 
tst.b ($FFFFF7CC).w
 
bne.s loc_31542E
 
move.w ($FFFFF604).w,($FFFFF602).w
 
 
 
loc_31542E:   ; ...
 
btst #0,$2A(a0)
 
beq.s loc_31543E
 
move.b #0,$21(a0)
 
bra.s loc_315450
 
; ---------------------------------------------------------------------------
 
 
 
loc_31543E:   ; ...
 
moveq #0,d0
 
move.b $22(a0),d0
 
and.w #6,d0
 
move.w Obj4C_Modes(pc,d0.w),d1
 
jsr Obj4C_Modes(pc,d1.w)
 
 
 
loc_315450:   ; ...
 
cmp.w #$FF00,($FFFFEECC).w
 
bne.s loc_31545E
 
and.w #$7FF,$C(a0)
 
 
 
loc_31545E:   ; ...
 
bsr.s Knuckles_Display
 
bsr.w Knuckles_Super
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Water
 
move.b ($FFFFF768).w,$36(a0)
 
move.b ($FFFFF76A).w,$37(a0)
 
tst.b ($FFFFF7C7).w
 
beq.s loc_31548A
 
tst.b $1C(a0)
 
bne.s loc_31548A
 
move.b $1D(a0),$1C(a0)
 
 
 
loc_31548A:   ; ...
 
bsr.w Knuckles_Animate
 
tst.b $2A(a0)
 
bmi.s loc_31549A
 
jsr TouchResponse
 
 
 
loc_31549A:   ; ...
 
bra.w LoadKnucklesDynPLC
 
; ---------------------------------------------------------------------------
 
Obj4C_Modes: dc.w Obj4C_MdNormal_Checks      ; 0 ; not airborne or rolling
 
dc.w Obj4C_MdAir          ; 2 ; airborne
 
dc.w Obj4C_MdRoll        ; 4 ; rolling
 
dc.w Obj4C_MdJump        ; 6 ; jumping
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Display:   ; ...
 
move.w $30(a0),d0
 
beq.s Obj4C_Display
 
subq.w #1,$30(a0)
 
lsr.w #3,d0
 
bcc.s Obj4C_CheckInvincibility
 
 
 
Obj4C_Display:   ; ...
 
jsr DisplaySprite
 
 
 
Obj4C_CheckInvincibility:   ; ...
 
btst #1,$2B(a0)
 
beq.s Obj4C_CheckSpeedShoes
 
tst.w $32(a0)
 
beq.s Obj4C_CheckSpeedShoes
 
subq.w #1,$32(a0)
 
bne.s Obj4C_CheckSpeedShoes
 
tst.b ($FFFFF7AA).w
 
bne.s Obj4C_RemoveInvincibility
 
cmp.b #$C,$28(a0)
 
bcs.s Obj4C_RemoveInvincibility
 
move.w ($FFFFFF90).w,d0
 
jsr PlayMusic
 
 
 
Obj4C_RemoveInvincibility:   ; ...
 
bclr #1,$2B(a0)
 
 
 
Obj4C_CheckSpeedShoes:   ; ...
 
btst #2,$2B(a0)
 
beq.s Obj4C_ExitCheck
 
tst.w $34(a0)
 
beq.s Obj4C_ExitCheck
 
subq.w #1,$34(a0)
 
bne.s Obj4C_ExitCheck
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s Obj4C_RemoveSpeedShoes
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
Obj4C_RemoveSpeedShoes:   ; ...
 
bclr #2,$2B(a0)
 
move.w #$FC,d0
 
jmp PlayMusic
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_ExitCheck:   ; ...
 
rts
 
; End of function Knuckles_Display
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RecordPositions:   ; ...
 
move.w ($FFFFEED2).w,d0
 
lea ($FFFFE500).w,a1
 
lea (a1,d0.w),a1
 
move.w 8(a0),(a1)+
 
move.w $C(a0),(a1)+
 
addq.b #4,($FFFFEED3).w
 
lea ($FFFFE400).w,a1
 
lea (a1,d0.w),a1
 
move.w ($FFFFF602).w,(a1)+
 
move.w $22(a0),(a1)+
 
rts
 
; End of function Knuckles_RecordPositions
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Water:   ; ...
 
tst.b ($FFFFF730).w
 
bne.s Obj4C_InWater
 
 
 
return_31556C:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_InWater:   ; ...
 
move.w ($FFFFF646).w,d0
 
cmp.w $C(a0),d0
 
bge.s Obj4C_OutWater
 
bset #6,$22(a0)
 
bne.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.b #$A,($FFFFD080).w
 
move.b #$81,($FFFFD0A8).w
 
move.l a0,($FFFFD0BC).w
 
move.w #$300,($FFFFF760).w
 
move.w #6,($FFFFF762).w
 
move.w #$40,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_3155C0
 
move.w #$400,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$60,($FFFFF764).w
 
 
 
loc_3155C0:   ; ...
 
asr $10(a0)
 
asr $12(a0)
 
asr $12(a0)
 
beq.s return_31556C
 
move.w #$100,($FFFFD11C).w
 
move.w #$AA,d0
 
jmp PlaySound
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_OutWater:   ; ...
 
bclr #6,$22(a0)
 
beq.s return_31556C
 
move.l a0,a1
 
bsr.w ResumeMusic
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
tst.b ($FFFFFE19).w
 
beq.s loc_315616
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
 
 
loc_315616:   ; ...
 
cmp.b #4,$24(a0)
 
beq.s loc_315622
 
asl $12(a0)
 
 
 
loc_315622:   ; ...
 
tst.w $12(a0)
 
beq.w return_31556C
 
                move.w #$100,($FFFFD11C).w
 
move.l a0,a1
 
bsr.w ResumeMusic
 
cmp.w #$F000,$12(a0)
 
bgt.s loc_315644
 
move.w #$F000,$12(a0)
 
 
 
loc_315644:   ; ...
 
move.w #$AA,d0
 
jmp PlaySound
 
; End of function Knuckles_Water
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj4C_MdNormal:   ; ...
 
bsr.w Knuckles_Spindash
 
bsr.w Knuckles_Jump
 
bsr.w Knuckles_SlopeResist
 
bsr.w Knuckles_Move
 
bsr.w Knuckles_Roll
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w AnglePos
 
bsr.w Knuckles_SlopeRepel
 
rts
 
; End of function Obj4C_MdNormal
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj4C_MdAir:   ; ...
 
tst.b $21(a0)
 
bne.s Obj4C_MdAir_Gliding
 
bsr.w Knuckles_JumpHeight
 
bsr.w Knuckles_ChgJumpDir
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMoveAndFall
 
btst #6,$22(a0)
 
beq.s loc_31569C
 
sub.w #$28,$12(a0)
 
 
 
loc_31569C:   ; ...
 
bsr.w Knuckles_JumpAngle
 
bsr.w Knuckles_DoLevelCollision
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj4C_MdAir_Gliding:   ; ...
 
bsr.w Knuckles_GlideSpeedControl
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w Knuckles_GlideControl
 
 
 
return_3156B8:   ; ...
 
rts
 
; End of function Obj4C_MdAir
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_GlideControl:   ; ...
 
 
 
; FUNCTION CHUNK AT 00315C40 SIZE 0000003C BYTES
 
 
 
move.b $21(a0),d0
 
beq.s return_3156B8
 
cmp.b #2,d0
 
beq.w Knuckles_FallingFromGlide
 
cmp.b #3,d0
 
beq.w Knuckles_Sliding
 
cmp.b #4,d0
 
beq.w Knuckles_Climbing_Wall
 
cmp.b #5,d0
 
beq.w Knuckles_Climbing_Up
 
 
 
Knuckles_NormalGlide:
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
bsr.w Knuckles_DoLevelCollision2
 
btst #5,($FFFFF7AC).w
 
bne.w Knuckles_BeginClimb
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
btst #1,($FFFFF7AC).w
 
beq.s Knuckles_BeginSlide
 
move.b ($FFFFF602).w,d0
 
and.b #$70,d0
 
bne.s loc_31574C
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
bclr #0,$22(a0)
 
tst.w $10(a0)
 
bpl.s loc_315736
 
bset #0,$22(a0)
 
 
 
loc_315736:   ; ...
 
asr $10(a0)
 
asr $10(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_31574C:   ; ...
 
bra.w sub_315C7C
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BeginSlide:   ; ...
 
bclr #0,$22(a0)
 
tst.w $10(a0)
 
bpl.s loc_315762
 
bset #0,$22(a0)
 
 
 
loc_315762:   ; ...
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s loc_315780
 
move.w $14(a0),$10(a0)
 
move.w #0,$12(a0)
 
bra.w Knuckles_ResetOnFloor_Part2
 
; ---------------------------------------------------------------------------
 
 
 
loc_315780:   ; ...
 
move.b #3,$21(a0)
 
move.b #$CC,$1A(a0)
 
move.b #$7F,$1E(a0)
 
move.b #0,$1B(a0)
 
cmp.b #$C,$28(a0)
 
bcs.s return_3157AC
 
move.b #6,($FFFFD124).w
 
move.b #$15,($FFFFD11A).w
 
 
 
return_3157AC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BeginClimb:   ; ...
 
tst.b ($FFFFF7AD).w
 
bmi.w loc_31587A
 
move.b $3F(a0),d5
 
move.b $1F(a0),d0
 
add.b #$40,d0
 
bpl.s loc_3157D8
 
bset #0,$22(a0)
 
bsr.w CheckLeftCeilingDist
 
or.w d0,d1
 
bne.s Knuckles_FallFromGlide
 
addq.w #1,8(a0)
 
bra.s loc_3157E8
 
; ---------------------------------------------------------------------------
 
 
 
loc_3157D8:   ; ...
 
bclr #0,$22(a0)
 
bsr.w CheckRightCeilingDist
 
or.w d0,d1
 
bne.w loc_31586A
 
 
 
loc_3157E8:   ; ...
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315804
 
cmp.w #$480,$14(a0)
 
bcs.s loc_315804
 
nop
 
 
 
loc_315804:   ; ...
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b #4,$21(a0)
 
move.b #$B7,$1A(a0)
 
move.b #$7F,$1E(a0)
 
move.b #0,$1B(a0)
 
move.b #3,$1F(a0)
 
move.w 8(a0),$A(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_FallFromGlide:   ; ...
 
move.w 8(a0),d3
 
move.b $16(a0),d0
 
ext.w d0
 
sub.w d0,d3
 
subq.w #1,d3
 
 
 
loc_31584A:   ; ...
 
move.w $C(a0),d2
 
sub.w #$B,d2
 
jsr ChkFloorEdge_Part2
 
tst.w d1
 
bmi.s loc_31587A
 
cmp.w #$C,d1
 
bcc.s loc_31587A
 
add.w d1,$C(a0)
 
bra.w loc_3157E8
 
; ---------------------------------------------------------------------------
 
 
 
loc_31586A:   ; ...
 
move.w 8(a0),d3
 
move.b $16(a0),d0
 
ext.w d0
 
add.w d0,d3
 
addq.w #1,d3
 
bra.s loc_31584A
 
; ---------------------------------------------------------------------------
 
 
 
loc_31587A:   ; ...
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
bset #1,($FFFFF7AC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_FallingFromGlide:   ; ...
 
bsr.w Knuckles_ChgJumpDir
 
add.w #$38,$12(a0)
 
btst #6,$22(a0)
 
beq.s loc_3158B2
 
sub.w #$28,$12(a0)
 
 
 
loc_3158B2:   ; ...
 
bsr.w Knuckles_DoLevelCollision2
 
btst #1,($FFFFF7AC).w
 
bne.s return_315900
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b $16(a0),d0
 
sub.b #$13,d0
 
ext.w d0
 
add.w d0,$C(a0)
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s loc_3158F0
 
bra.w Knuckles_ResetOnFloor_Part2
 
; ---------------------------------------------------------------------------
 
 
 
loc_3158F0:   ; ...
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.w #$F,$2E(a0)
 
move.b #$23,$1C(a0)
 
 
 
return_315900:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Sliding:   ; ...
 
move.b ($FFFFF602).w,d0
 
and.b #$70,d0
 
beq.s loc_315926
 
tst.w $10(a0)
 
bpl.s loc_31591E
 
add.w #$20,$10(a0)
 
bmi.s loc_31591C
 
bra.s loc_315926
 
; ---------------------------------------------------------------------------
 
 
 
loc_31591C:   ; ...
 
bra.s loc_315958
 
; ---------------------------------------------------------------------------
 
 
 
loc_31591E:   ; ...
 
sub.w #$20,$10(a0)
 
bpl.s loc_315958
 
 
 
loc_315926:   ; ...
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.b $16(a0),d0
 
sub.b #$13,d0
 
ext.w d0
 
add.w d0,$C(a0)
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.w #$F,$2E(a0)
 
move.b #$22,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315958:   ; ...
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
bsr.w Knuckles_DoLevelCollision2
 
bsr.w Player_CheckFloor
 
cmp.w #$E,d1
 
bge.s loc_315988
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315988:   ; ...
 
move.b #2,$21(a0)
 
move.b #$21,$1C(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
bset #1,($FFFFF7AC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Climbing_Wall:   ; ...
 
tst.b ($FFFFF7AD).w
 
bmi.w loc_315BAE
 
move.w 8(a0),d0
 
cmp.w $A(a0),d0
 
bne.w loc_315BAE
 
btst #3,$22(a0)
 
bne.w loc_315BAE
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.l #$FFFFD600,($FFFFF796).w
 
cmp.b #$D,$3F(a0)
 
beq.s loc_3159F0
 
move.l #$FFFFD900,($FFFFF796).w
 
 
 
loc_3159F0:   ; ...
 
move.b $3F(a0),d5
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
moveq #0,d1
 
btst #0,($FFFFF602).w
 
beq.w loc_315A76
 
move.w $C(a0),d2
 
sub.w #$B,d2
 
bsr.w sub_315C22
 
cmp.w #4,d1
 
bge.w Knuckles_ClimbUp   ; Climb onto the floor above you
 
tst.w d1
 
bne.w loc_315B30
 
move.b $3F(a0),d5
 
move.w $C(a0),d2
 
subq.w #8,d2
 
move.w 8(a0),d3
 
bsr.w sub_3192E6   ; Doesn't exist in S2
 
tst.w d1
 
bpl.s loc_315A46
 
sub.w d1,$C(a0)
 
moveq #1,d1
 
bra.w loc_315B04
 
; ---------------------------------------------------------------------------
 
 
 
loc_315A46:   ; ...
 
subq.w #1,$C(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315A54
 
subq.w #1,$C(a0)
 
 
 
loc_315A54:   ; ...
 
moveq #1,d1
 
move.w ($FFFFEECC).w,d0
 
cmp.w #-$100,d0
 
beq.w loc_315B04
 
add.w #$10,d0
 
cmp.w $C(a0),d0
 
ble.w loc_315B04
 
move.w d0,$C(a0)
 
bra.w loc_315B04
 
; ---------------------------------------------------------------------------
 
 
 
loc_315A76:   ; ...
 
btst #1,($FFFFF602).w
 
beq.w loc_315B04
 
cmp.b #$BD,$1A(a0)
 
bne.s loc_315AA2
 
move.b #$B7,$1A(a0)
 
addq.w #3,$C(a0)
 
subq.w #3,8(a0)
 
btst #0,$22(a0)
 
beq.s loc_315AA2
 
addq.w #6,8(a0)
 
 
 
loc_315AA2:   ; ...
 
move.w $C(a0),d2
 
add.w #$B,d2
 
bsr.w sub_315C22
 
tst.w d1
 
bne.w loc_315BAE
 
move.b $3E(a0),d5
 
move.w $C(a0),d2
 
add.w #9,d2
 
move.w 8(a0),d3
 
bsr.w sub_318FF6
 
tst.w d1
 
bpl.s loc_315AF4
 
add.w d1,$C(a0)
 
move.b ($FFFFF768).w,$26(a0)
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.b #5,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315AF4:   ; ...
 
addq.w #1,$C(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_315B02
 
addq.w #1,$C(a0)
 
 
 
loc_315B02:   ; ...
 
moveq #-1,d1
 
 
 
loc_315B04:   ; ...
 
tst.w d1
 
beq.s loc_315B30
 
subq.b #1,$1F(a0)
 
bpl.s loc_315B30
 
move.b #3,$1F(a0)
 
add.b $1A(a0),d1
 
cmp.b #$B7,d1
 
bcc.s loc_315B22
 
move.b #$BC,d1
 
 
 
loc_315B22:   ; ...
 
cmp.b #$BC,d1
 
bls.s loc_315B2C
 
move.b #$B7,d1
 
 
 
loc_315B2C:   ; ...
 
move.b d1,$1A(a0)
 
 
 
loc_315B30:   ; ...
 
move.b #$20,$1E(a0)
 
move.b #0,$1B(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.w ($FFFFF602).w,d0
 
and.w #$70,d0
 
beq.s return_315B94
 
move.w #$FC80,$12(a0)
 
move.w #$400,$10(a0)
 
bchg #0,$22(a0)
 
bne.s loc_315B6A
 
neg.w $10(a0)
 
 
 
loc_315B6A:   ; ...
 
bset #1,$22(a0)
 
move.b #1,$3C(a0)
 
move.b #$E,$16(a0)
 
move.b #7,$17(a0)
 
move.b #2,$1C(a0)
 
bset #2,$22(a0)
 
move.b #0,$21(a0)
 
 
 
return_315B94:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_ClimbUp:   ; ...
 
move.b #5,$21(a0)   ; Climb up to the floor above you
 
cmp.b #$BD,$1A(a0)
 
beq.s return_315BAC
 
move.b #0,$1F(a0)
 
bsr.s sub_315BDA
 
 
 
return_315BAC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_315BAE:   ; ...
 
move.b #2,$21(a0)
 
move.w #$2121,$1C(a0)
 
move.b #$CB,$1A(a0)
 
move.b #7,$1E(a0)
 
move.b #1,$1B(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
rts
 
; End of function Knuckles_GlideControl
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315BDA:   ; ...
 
moveq #0,d0
 
move.b $1F(a0),d0
 
lea word_315C12(pc,d0.w),a1
 
move.b (a1)+,$1A(a0)
 
move.b (a1)+,d0
 
ext.w d0
 
btst #0,$22(a0)
 
beq.s loc_315BF6
 
neg.w d0
 
 
 
loc_315BF6:   ; ...
 
add.w d0,8(a0)
 
move.b (a1)+,d1
 
ext.w d1
 
add.w d1,$C(a0)
 
move.b (a1)+,$1E(a0)
 
addq.b #4,$1F(a0)
 
move.b #0,$1B(a0)
 
rts
 
; End of function sub_315BDA
 
 
 
; ---------------------------------------------------------------------------
 
word_315C12: dc.w $BD03,$FD06,$BE08,$F606,$BFF8,$F406,$D208,$FB06; 0 ; ...
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315C22:   ; ...
 
 
 
; FUNCTION CHUNK AT 00319208 SIZE 00000020 BYTES
 
; FUNCTION CHUNK AT 003193D2 SIZE 00000024 BYTES
 
 
 
move.b $3F(a0),d5
 
btst #0,$22(a0)
 
bne.s loc_315C36
 
move.w 8(a0),d3
 
bra.w loc_319208
 
; ---------------------------------------------------------------------------
 
 
 
loc_315C36:   ; ...
 
move.w 8(a0),d3
 
subq.w #1,d3
 
bra.w loc_3193D2
 
; End of function sub_315C22
 
 
 
; ---------------------------------------------------------------------------
 
; START OF FUNCTION CHUNK FOR Knuckles_GlideControl
 
 
 
Knuckles_Climbing_Up:   ; ...
 
tst.b $1E(a0)
 
bne.s return_315C7A
 
bsr.w sub_315BDA
 
cmp.b #$10,$1F(a0)
 
bne.s return_315C7A
 
move.w #0,$14(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
btst #0,$22(a0)
 
beq.s loc_315C70
 
subq.w #1,8(a0)
 
 
 
loc_315C70:   ; ...
 
bsr.w Knuckles_ResetOnFloor_Part2
 
move.b #5,$1C(a0)
 
 
 
return_315C7A:   ; ...
 
rts
 
; END OF FUNCTION CHUNK FOR Knuckles_GlideControl
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
sub_315C7C:   ; ...
 
move.b #$20,$1E(a0)
 
move.b #0,$1B(a0)
 
move.w #$2020,$1C(a0)
 
bclr #5,$22(a0)
 
bclr #0,$22(a0)
 
moveq #0,d0
 
move.b $1F(a0),d0
 
add.b #$10,d0
 
lsr.w #5,d0
 
move.b byte_315CC2(pc,d0.w),d1
 
move.b d1,$1A(a0)
 
cmp.b #$C4,d1
 
bne.s return_315CC0
 
bset #0,$22(a0)
 
move.b #$C0,$1A(a0)
 
 
 
return_315CC0:   ; ...
 
rts
 
; End of function sub_315C7C
 
 
 
; ---------------------------------------------------------------------------
 
byte_315CC2: dc.b $C0,$C1,$C2,$C3,$C4,$C3,$C2,$C1; 0 ; ...
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_GlideSpeedControl:   ; ...
 
cmp.b #1,$21(a0)
 
bne.w loc_315D88
 
move.w $14(a0),d0
 
cmp.w #$400,d0
 
bcc.s loc_315CE2
 
addq.w #8,d0
 
bra.s loc_315CFC
 
; ---------------------------------------------------------------------------
 
 
 
loc_315CE2:   ; ...
 
cmp.w #$1800,d0
 
bcc.s loc_315CFC
 
move.b $1F(a0),d1
 
and.b #$7F,d1
 
bne.s loc_315CFC
 
addq.w #4,d0
 
tst.b ($FFFFFE19).w
 
beq.s loc_315CFC
 
addq.w #8,d0
 
 
 
loc_315CFC:   ; ...
 
move.w d0,$14(a0)
 
move.b $1F(a0),d0
 
btst #2,($FFFFF602).w
 
beq.s loc_315D1C
 
cmp.b #$80,d0
 
beq.s loc_315D1C
 
tst.b d0
 
bpl.s loc_315D18
 
neg.b d0
 
 
 
loc_315D18:   ; ...
 
addq.b #2,d0
 
bra.s loc_315D3A
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D1C:   ; ...
 
btst #3,($FFFFF602).w
 
beq.s loc_315D30
 
tst.b d0
 
beq.s loc_315D30
 
bmi.s loc_315D2C
 
neg.b d0
 
 
 
loc_315D2C:   ; ...
 
addq.b #2,d0
 
bra.s loc_315D3A
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D30:   ; ...
 
move.b d0,d1
 
and.b #$7F,d1
 
beq.s loc_315D3A
 
addq.b #2,d0
 
 
 
loc_315D3A:   ; ...
 
move.b d0,$1F(a0)
 
move.b $1F(a0),d0
 
jsr CalcSine
 
muls.w $14(a0),d1
 
asr.l #8,d1
 
move.w d1,$10(a0)
 
cmp.w #$80,$12(a0)
 
blt.s loc_315D62
 
sub.w #$20,$12(a0)
 
bra.s loc_315D68
 
; ---------------------------------------------------------------------------
 
 
 
loc_315D62:   ; ...
 
add.w #$20,$12(a0)
 
 
 
loc_315D68:   ; ...
 
move.w ($FFFFEECC).w,d0
 
cmp.w #$FF00,d0
 
beq.w loc_315D88
 
add.w #$10,d0
 
cmp.w $C(a0),d0
 
ble.w loc_315D88
 
asr $10(a0)
 
asr $14(a0)
 
 
 
loc_315D88:   ; ...
 
cmp.w #$60,($FFFFEED8).w
 
beq.s return_315D9A
 
bcc.s loc_315D96
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_315D96:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
return_315D9A:   ; ...
 
rts
 
; End of function Knuckles_GlideSpeedControl
 
 
 
; ---------------------------------------------------------------------------
 
</asm>
 
==Step 5: Obj4C_MdRoll and Obj4C_MdJump==
 
Paste this below the code mentioned above, changing the "Obj01"s to "Obj4C"s:
 
<asm>
 
Obj01_MdRoll:   ; ...
 
tst.b $39(a0)
 
bne.s loc_315DA6
 
bsr.w Knuckles_Jump
 
 
 
loc_315DA6:   ; ...
 
bsr.w Knuckles_RollRepel
 
bsr.w Knuckles_RollSpeed
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
bsr.w AnglePos
 
bsr.w Knuckles_SlopeRepel
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_MdJump:   ; ...
 
bsr.w Knuckles_JumpHeight
 
bsr.w Knuckles_ChgJumpDir
 
bsr.w Knuckles_LevelBoundaries
 
jsr ObjectMoveAndFall
 
btst #6,$22(a0)
 
beq.s loc_315DE2
 
sub.w #$28,$12(a0)
 
 
 
loc_315DE2:   ; ...
 
bsr.w Knuckles_JumpAngle
 
bsr.w Knuckles_DoLevelCollision
 
rts
 
 
 
</asm>
 
Done! Piece of cake.
 
==Step 6: TONS of essential coding!==
 
Well, it's time to actually get something accomplished movement-wise, don't you think? That's where this step comes in. Put the following heap of code below the code we already have:
 
<asm>
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Move:   ; ...
 
move.w ($FFFFF760).w,d6
 
move.w ($FFFFF762).w,d5
 
move.w ($FFFFF764).w,d4
 
tst.b $2B(a0)
 
bmi.w Obj01_Traction
 
tst.w $2E(a0)
 
bne.w Obj01_ResetScreen
 
btst #2,($FFFFF602).w
 
beq.s Obj01_NotLeft
 
bsr.w Knuckles_MoveLeft
 
 
 
Obj01_NotLeft:   ; ...
 
btst #3,($FFFFF602).w
 
beq.s Obj01_NotRight
 
bsr.w Knuckles_MoveRight
 
 
 
Obj01_NotRight:   ; ...
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
bne.w Obj01_ResetScreen
 
tst.w $14(a0)
 
bne.w Obj01_ResetScreen
 
bclr #5,$22(a0)
 
move.b #5,$1C(a0)
 
btst #3,$22(a0)
 
beq.w Knuckles_Balance
 
moveq #0,d0
 
move.b $3D(a0),d0
 
lsl.w #6,d0
 
lea ($FFFFB000).w,a1
 
lea (a1,d0.w),a1
 
tst.b $22(a1)
 
bmi.w Knuckles_LookUp
 
moveq #0,d1
 
move.b $19(a1),d1
 
move.w d1,d2
 
add.w d2,d2
 
subq.w #2,d2
 
add.w 8(a0),d1
 
sub.w 8(a1),d1
 
cmp.w #2,d1
 
blt.s Knuckles_BalanceOnObjLeft
 
cmp.w d2,d1
 
bge.s Knuckles_BalanceOnObjRight
 
bra.w Knuckles_LookUp
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BalanceOnObjRight:   ; ...
 
btst #0,$22(a0)
 
bne.s loc_315E9A
 
move.b #6,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
loc_315E9A:   ; ...
 
bclr #0,$22(a0)
 
move.b #0,$1E(a0)
 
move.b #4,$1B(a0)
 
move.w #$606,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BalanceOnObjLeft:   ; ...
 
btst #0,$22(a0)
 
beq.s loc_315EC8
 
move.b #6,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
loc_315EC8:   ; ...
 
bset #0,$22(a0)
 
move.b #0,$1E(a0)
 
move.b #4,$1B(a0)
 
move.w #$606,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Balance:   ; ...
 
jsr ChkFloorEdge
 
cmp.w #$C,d1
 
blt.w Knuckles_LookUp
 
cmp.b #3,$36(a0)
 
bne.s Knuckles_BalanceLeft
 
btst #0,$22(a0)
 
bne.s loc_315F0C
 
move.b #6,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
loc_315F0C:   ; ...
 
bclr #0,$22(a0)
 
move.b #0,$1E(a0)
 
move.b #4,$1B(a0)
 
move.w #$606,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BalanceLeft:   ; ...
 
cmp.b #3,$37(a0)
 
bne.s Knuckles_LookUp
 
btst #0,$22(a0)
 
beq.s loc_315F42
 
move.b #6,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
loc_315F42:   ; ...
 
bset #0,$22(a0)
 
move.b #0,$1E(a0)
 
move.b #4,$1B(a0)
 
move.w #$606,$1C(a0)
 
bra.w Obj01_ResetScreen
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_LookUp:   ; ...
 
btst #0,($FFFFF602).w
 
beq.s Knuckles_Duck
 
move.b #7,$1C(a0)
 
addq.w #1,($FFFFF66C).w
 
cmp.w #$78,($FFFFF66C).w
 
bcs.s Obj01_ResetScreen_Part2
 
move.w #$78,($FFFFF66C).w
 
cmp.w #$C8,($FFFFEED8).w
 
beq.s Obj01_UpdateSpeedOnGround
 
addq.w #2,($FFFFEED8).w
 
bra.s Obj01_UpdateSpeedOnGround
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Duck:   ; ...
 
btst #1,($FFFFF602).w
 
beq.s Obj01_ResetScreen
 
move.b #8,$1C(a0)
 
addq.w #1,($FFFFF66C).w
 
cmp.w #$78,($FFFFF66C).w
 
bcs.s Obj01_ResetScreen_Part2
 
move.w #$78,($FFFFF66C).w
 
cmp.w #8,($FFFFEED8).w
 
beq.s Obj01_UpdateSpeedOnGround
 
subq.w #2,($FFFFEED8).w
 
bra.s Obj01_UpdateSpeedOnGround
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_ResetScreen:   ; ...
 
move.w #0,($FFFFF66C).w
 
 
 
Obj01_ResetScreen_Part2:   ; ...
 
cmp.w #$60,($FFFFEED8).w
 
beq.s Obj01_UpdateSpeedOnGround
 
bcc.s loc_315FCE
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_315FCE:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
Obj01_UpdateSpeedOnGround:   ; ...
 
tst.b ($FFFFFE19).w
 
beq.s loc_315FDC
 
move.w #$C,d5
 
 
 
loc_315FDC:   ; ...
 
move.b ($FFFFF602).w,d0
 
and.b #$C,d0
 
bne.s Obj01_Traction
 
move.w $14(a0),d0
 
beq.s Obj01_Traction
 
bmi.s Obj01_SettleLeft
 
sub.w d5,d0
 
bcc.s loc_315FF6
 
move.w #0,d0
 
 
 
loc_315FF6:   ; ...
 
move.w d0,$14(a0)
 
bra.s Obj01_Traction
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_SettleLeft:   ; ...
 
add.w d5,d0
 
bcc.s loc_316004
 
move.w #0,d0
 
 
 
loc_316004:   ; ...
 
move.w d0,$14(a0)
 
 
 
Obj01_Traction:   ; ...
 
move.b $26(a0),d0
 
jsr CalcSine
 
muls.w $14(a0),d1
 
asr.l #8,d1
 
move.w d1,$10(a0)
 
muls.w $14(a0),d0
 
asr.l #8,d0
 
move.w d0,$12(a0)
 
 
 
Obj01_CheckWallsOnGround:   ; ...
 
move.b $26(a0),d0
 
add.b #$40,d0
 
bmi.s return_3160A6
 
move.b #$40,d1
 
tst.w $14(a0)
 
beq.s return_3160A6
 
bmi.s loc_31603E
 
neg.w d1
 
 
 
loc_31603E:   ; ...
 
move.b $26(a0),d0
 
add.b d1,d0
 
move.w d0,-(sp)
 
bsr.w CalcRoomInFront   ; Also known as Sonic_WalkSpeed in Sonic 1
 
move.w (sp)+,d0
 
tst.w d1
 
bpl.s return_3160A6
 
asl.w #8,d1
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s loc_3160A2
 
cmp.b #$40,d0
 
beq.s loc_316088
 
cmp.b #$80,d0
 
beq.s loc_316082
 
add.w d1,$10(a0)
 
move.w #0,$14(a0)
 
btst #0,$22(a0)
 
bne.s return_316080
 
bset #5,$22(a0)
 
 
 
return_316080:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316082:   ; ...
 
sub.w d1,$12(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316088:   ; ...
 
sub.w d1,$10(a0)
 
move.w #0,$14(a0)
 
btst #0,$22(a0)
 
beq.s return_316080
 
bset #5,$22(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_3160A2:   ; ...
 
add.w d1,$12(a0)
 
 
 
return_3160A6:   ; ...
 
rts
 
; End of function Knuckles_Move
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_MoveLeft:   ; ...
 
move.w $14(a0),d0
 
beq.s loc_3160B0
 
bpl.s Knuckles_TurnLeft
 
 
 
loc_3160B0:   ; ...
 
bset #0,$22(a0)
 
bne.s loc_3160C4
 
bclr #5,$22(a0)
 
move.b #1,$1D(a0)
 
 
 
loc_3160C4:   ; ...
 
sub.w d5,d0
 
move.w d6,d1
 
neg.w d1
 
cmp.w d1,d0
 
bgt.s loc_3160D6
 
add.w d5,d0
 
cmp.w d1,d0
 
ble.s loc_3160D6
 
move.w d1,d0
 
 
 
loc_3160D6:   ; ...
 
move.w d0,$14(a0)
 
move.b #0,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_TurnLeft:   ; ...
 
sub.w d4,d0
 
bcc.s loc_3160EA
 
move.w #-$80,d0
 
 
 
loc_3160EA:   ; ...
 
move.w d0,$14(a0)
 
move.b $26(a0),d1
 
add.b #$20,d1
 
and.b #$C0,d1
 
bne.s return_31612C
 
cmp.w #$400,d0
 
blt.s return_31612C
 
move.b #$D,$1C(a0)
 
bclr #0,$22(a0)
 
move.w #$A4,d0
 
jsr PlaySound
 
cmp.b #$C,$28(a0)
 
bcs.s return_31612C
 
move.b #6,($FFFFD124).w
 
move.b #$15,($FFFFD11A).w
 
 
 
return_31612C:   ; ...
 
rts
 
; End of function Knuckles_MoveLeft
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_MoveRight:   ; ...
 
move.w $14(a0),d0
 
bmi.s Knuckles_TurnRight
 
bclr #0,$22(a0)
 
beq.s loc_316148
 
bclr #5,$22(a0)
 
move.b #1,$1D(a0)
 
 
 
loc_316148:   ; ...
 
add.w d5,d0
 
cmp.w d6,d0
 
blt.s loc_316156
 
sub.w d5,d0
 
cmp.w d6,d0
 
bge.s loc_316156
 
move.w d6,d0
 
 
 
loc_316156:   ; ...
 
move.w d0,$14(a0)
 
move.b #0,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_TurnRight:   ; ...
 
add.w d4,d0
 
bcc.s loc_31616A
 
move.w #$80,d0
 
 
 
loc_31616A:   ; ...
 
move.w d0,$14(a0)
 
move.b $26(a0),d1
 
add.b #$20,d1
 
and.b #$C0,d1
 
bne.s return_3161AC
 
cmp.w #$FC00,d0
 
bgt.s return_3161AC
 
move.b #$D,$1C(a0)
 
bset #0,$22(a0)
 
move.w #$A4,d0
 
jsr PlaySound
 
cmp.b #$C,$28(a0)
 
bcs.s return_3161AC
 
move.b #6,($FFFFD124).w
 
move.b #$15,($FFFFD11A).w
 
 
 
return_3161AC:   ; ...
 
rts
 
; End of function Knuckles_MoveRight
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RollSpeed:   ; ...
 
move.w ($FFFFF760).w,d6
 
asl.w #1,d6
 
move.w ($FFFFF762).w,d5
 
asr.w #1,d5
 
move.w #$20,d4
 
tst.b $2B(a0)
 
bmi.w Obj01_Roll_ResetScreen
 
tst.w $2E(a0)
 
bne.s Knuckles_Apply_RollSpeed
 
btst #2,($FFFFF602).w
 
beq.s loc_3161D8
 
bsr.w Knuckles_RollLeft
 
 
 
loc_3161D8:   ; ...
 
btst #3,($FFFFF602).w
 
beq.s Knuckles_Apply_RollSpeed
 
bsr.w Knuckles_RollRight
 
 
 
Knuckles_Apply_RollSpeed:   ; ...
 
move.w $14(a0),d0
 
beq.s Knuckles_CheckRollStop
 
bmi.s Knuckles_ApplyRollSpeedLeft
 
sub.w d5,d0
 
bcc.s loc_3161F4
 
move.w #0,d0
 
 
 
loc_3161F4:   ; ...
 
move.w d0,$14(a0)
 
bra.s Knuckles_CheckRollStop
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_ApplyRollSpeedLeft:   ; ...
 
add.w d5,d0
 
bcc.s loc_316202
 
move.w #0,d0
 
 
 
loc_316202:   ; ...
 
move.w d0,$14(a0)
 
 
 
Knuckles_CheckRollStop:   ; ...
 
tst.w $14(a0)
 
bne.s Obj01_Roll_ResetScreen
 
tst.b $39(a0)
 
bne.s Knuckles_KeepRolling
 
bclr #2,$22(a0)
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
move.b #5,$1C(a0)
 
subq.w #5,$C(a0)
 
bra.s Obj01_Roll_ResetScreen
 
; ---------------------------------------------------------------------------
 
; magically gives Knuckles an extra push if he's going to stop rolling where it's not allowed
 
; (such as in an S-curve in HTZ or a stopper chamber in CNZ)
 
 
 
 
 
Knuckles_KeepRolling:   ; ...
 
move.w #$400,$14(a0)
 
btst #0,$22(a0)
 
beq.s Obj01_Roll_ResetScreen
 
neg.w $14(a0)
 
 
 
Obj01_Roll_ResetScreen:   ; ...
 
cmp.w #$60,($FFFFEED8).w
 
beq.s Knuckles_SetRollSpeeds
 
bcc.s loc_316250
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_316250:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
Knuckles_SetRollSpeeds:   ; ...
 
move.b $26(a0),d0
 
jsr CalcSine
 
muls.w $14(a0),d0
 
asr.l #8,d0
 
move.w d0,$12(a0)
 
muls.w $14(a0),d1
 
asr.l #8,d1
 
cmp.w #$1000,d1
 
ble.s loc_316278
 
move.w #$1000,d1
 
 
 
loc_316278:   ; ...
 
cmp.w #-$1000,d1
 
bge.s loc_316282
 
move.w #-$1000,d1
 
 
 
loc_316282:   ; ...
 
move.w d1,$10(a0)
 
bra.w Obj01_CheckWallsOnGround
 
; End of function Knuckles_RollSpeed
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RollLeft:   ; ...
 
move.w $14(a0),d0
 
beq.s loc_316292
 
bpl.s Knuckles_BrakeRollingRight
 
 
 
loc_316292:   ; ...
 
bset #0,$22(a0)
 
move.b #2,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BrakeRollingRight:   ; ...
 
sub.w d4,d0
 
bcc.s loc_3162A8
 
move.w #-$80,d0
 
 
 
loc_3162A8:   ; ...
 
move.w d0,$14(a0)
 
rts
 
; End of function Knuckles_RollLeft
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RollRight:   ; ...
 
move.w $14(a0),d0
 
bmi.s Knuckles_BrakeRollingLeft
 
bclr #0,$22(a0)
 
move.b #2,$1C(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_BrakeRollingLeft:   ; ...
 
add.w d4,d0
 
bcc.s loc_3162CA
 
move.w #$80,d0
 
 
 
loc_3162CA:   ; ...
 
move.w d0,$14(a0)
 
rts
 
; End of function Knuckles_RollRight
 
 
 
; ---------------------------------------------------------------------------
 
; Subroutine for moving Knuckles left or right when he's in the air
 
; ---------------------------------------------------------------------------
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_ChgJumpDir:   ; ...
 
move.w ($FFFFF760).w,d6
 
move.w ($FFFFF762).w,d5
 
asl.w #1,d5
 
btst #4,$22(a0)
 
bne.s Obj01_Jump_ResetScreen
 
move.w $10(a0),d0
 
btst #2,($FFFFF602).w
 
beq.s loc_31630E
 
bset #0,$22(a0)
 
sub.w d5,d0
 
move.w d6,d1
 
neg.w d1
 
cmp.w d1,d0
 
bgt.s loc_31630E
 
tst.w ($FFFFFFD0).w
 
bne.w loc_31630C
 
add.w d5,d0
 
cmp.w d1,d0
 
ble.s loc_31630E
 
 
 
loc_31630C:   ; ...
 
move.w d1,d0
 
 
 
loc_31630E:   ; ...
 
btst #3,($FFFFF602).w
 
beq.s loc_316332
 
bclr #0,$22(a0)
 
add.w d5,d0
 
cmp.w d6,d0
 
blt.s loc_316332
 
tst.w ($FFFFFFD0).w
 
bne.w loc_316330
 
sub.w d5,d0
 
cmp.w d6,d0
 
bge.s loc_316332
 
 
 
loc_316330:   ; ...
 
move.w d6,d0
 
 
 
loc_316332:   ; ...
 
move.w d0,$10(a0)
 
 
 
Obj01_Jump_ResetScreen:   ; ...
 
cmp.w #$60,($FFFFEED8).w
 
beq.s Knuckles_JumpPeakDecelerate
 
bcc.s loc_316344
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_316344:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
Knuckles_JumpPeakDecelerate:   ; ...
 
cmp.w #-$400,$12(a0)
 
bcs.s return_316376
 
move.w $10(a0),d0
 
move.w d0,d1
 
asr.w #5,d1
 
beq.s return_316376
 
bmi.s Knuckles_JumpPeakDecelerateLeft
 
sub.w d1,d0
 
bcc.s loc_316364
 
move.w #0,d0
 
 
 
loc_316364:   ; ...
 
move.w d0,$10(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_JumpPeakDecelerateLeft:   ; ...
 
sub.w d1,d0
 
bcs.s loc_316372
 
move.w #0,d0
 
 
 
loc_316372:   ; ...
 
move.w d0,$10(a0)
 
 
 
return_316376:   ; ...
 
rts
 
; End of function Knuckles_ChgJumpDir
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_LevelBoundaries:   ; ...
 
move.l 8(a0),d1
 
move.w $10(a0),d0
 
ext.l d0
 
asl.l #8,d0
 
add.l d0,d1
 
swap d1
 
move.w ($FFFFEEC8).w,d0
 
add.w #$10,d0
 
cmp.w d1,d0
 
bhi.s Knuckles_Boundary_Sides
 
move.w ($FFFFEECA).w,d0
 
add.w #$128,d0
 
tst.b ($FFFFF7AA).w
 
bne.s loc_3163A6
 
add.w #$40,d0
 
 
 
loc_3163A6:   ; ...
 
cmp.w d1,d0
 
bls.s Knuckles_Boundary_Sides
 
 
 
Knuckles_Boundary_CheckBottom:   ; ...
 
move.w ($FFFFEECE).w,d0
 
add.w #$E0,d0
 
cmp.w $C(a0),d0
 
blt.s Knuckles_Boundary_Bottom
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Boundary_Bottom:   ; ...
 
jmp KillCharacter
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_Boundary_Sides:   ; ...
 
move.w d0,8(a0)
 
move.w #0,$A(a0)
 
move.w #0,$10(a0)
 
move.w #0,$14(a0)
 
bra.s Knuckles_Boundary_CheckBottom
 
; End of function Knuckles_LevelBoundaries
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Roll:   ; ...
 
tst.b $2B(a0)
 
bmi.s Obj01_NoRoll
 
move.w $14(a0),d0
 
bpl.s loc_3163E6
 
neg.w d0
 
 
 
loc_3163E6:   ; ...
 
cmp.w #$80,d0
 
bcs.s Obj01_NoRoll
 
move.b ($FFFFF602).w,d0
 
and.b #$C,d0
 
bne.s Obj01_NoRoll
 
btst #1,($FFFFF602).w
 
bne.s Obj01_ChkRoll
 
 
 
Obj01_NoRoll:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_ChkRoll:   ; ...
 
btst #2,$22(a0)
 
beq.s Obj01_DoRoll
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_DoRoll:   ; ...
 
bset #2,$22(a0)
 
move.b #$E,$16(a0)
 
move.b #7,$17(a0)
 
move.b #2,$1C(a0)
 
addq.w #5,$C(a0)
 
move.w #$BE,d0
 
jsr PlaySound
 
tst.w $14(a0)
 
bne.s return_31643C
 
move.w #$200,$14(a0)
 
 
 
return_31643C:   ; ...
 
rts
 
; End of function Knuckles_Roll
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Jump:   ; ...
 
move.b ($FFFFF603).w,d0
 
and.b #$70,d0
 
beq.w return_3164EC
 
moveq #0,d0
 
move.b $26(a0),d0
 
add.b #$80,d0
 
bsr.w CalcRoomOverHead
 
cmp.w #6,d1
 
blt.w return_3164EC
 
move.w #$600,d2
 
btst #6,$22(a0)
 
beq.s loc_316470
 
move.w #$300,d2
 
 
 
loc_316470:   ; ...
 
tst.w ($FFFFFFD0).w   ; Check for demo mode (note: in normal Sonic 2, this is the level select flag!)
 
beq.s loc_31647A
 
add.w #$80,d2   ; Set the jump height to Sonic's height in Demo mode because Sonic Team were too lazy to record new demos for S2&K.
 
 
 
loc_31647A:   ; ...
 
moveq #0,d0
 
move.b $26(a0),d0
 
sub.b #$40,d0
 
jsr CalcSine
 
muls.w d2,d1
 
asr.l #8,d1
 
add.w d1,$10(a0)
 
muls.w d2,d0
 
asr.l #8,d0
 
add.w d0,$12(a0)
 
bset #1,$22(a0)
 
bclr #5,$22(a0)
 
addq.l #4,sp
 
move.b #1,$3C(a0)
 
clr.b $38(a0)
 
 
 
loc_3164B2:
 
move.w #$A0,d0
 
jsr PlaySound
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
btst #2,$22(a0)
 
bne.s Knuckles_RollJump
 
move.b #$E,$16(a0)
 
move.b #7,$17(a0)
 
move.b #2,$1C(a0)
 
bset #2,$22(a0)
 
addq.w #5,$C(a0)
 
 
 
return_3164EC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_RollJump:   ; ...
 
bset #4,$22(a0)
 
rts
 
; End of function Knuckles_Jump
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_JumpHeight:   ; ...
 
tst.b $3C(a0)
 
beq.s Knuckles_UpwardsVelocityCap
 
move.w #-$400,d1
 
btst #6,$22(a0)
 
beq.s loc_31650C
 
move.w #-$200,d1
 
 
 
loc_31650C:   ; ...
 
cmp.w $12(a0),d1
 
ble.w Knuckles_CheckGlide   ; Check if Knuckles should begin a glide
 
move.b ($FFFFF602).w,d0
 
and.b #$70,d0
 
bne.s return_316522
 
move.w d1,$12(a0)
 
 
 
return_316522:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_UpwardsVelocityCap:   ; ...
 
tst.b $39(a0)
 
bne.s return_316538
 
cmp.w #-$FC0,$12(a0)
 
bge.s return_316538
 
move.w #-$FC0,$12(a0)
 
 
 
return_316538:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_CheckGlide:   ; ...
 
tst.w ($FFFFFFD0).w   ; Don't glide on demos
 
bne.w return_3165D2
 
tst.b $21(a0)
 
bne.w return_3165D2
 
move.b ($FFFFF603).w,d0
 
and.b #$70,d0
 
beq.w return_3165D2
 
tst.b ($FFFFFE19).w
 
bne.s Knuckles_BeginGlide
 
cmp.b #7,($FFFFFFB1).w
 
bcs.s Knuckles_BeginGlide
 
cmp.w #50,($FFFFFE20).w
 
bcs.s Knuckles_BeginGlide
 
tst.b ($FFFFFE1E).w
 
bne.s Knuckles_TurnSuper
 
 
 
Knuckles_BeginGlide:   ; ...
 
bclr #2,$22(a0)
 
move.b #$A,$16(a0)
 
move.b #$A,$17(a0)
 
bclr #4,$22(a0)
 
move.b #1,$21(a0)
 
add.w #$200,$12(a0)
 
bpl.s loc_31659E
 
move.w #0,$12(a0)
 
 
 
loc_31659E:   ; ...
 
moveq #0,d1
 
move.w #$400,d0
 
move.w d0,$14(a0)
 
btst #0,$22(a0)
 
beq.s loc_3165B4
 
neg.w d0
 
moveq #-$80,d1
 
 
 
loc_3165B4:   ; ...
 
move.w d0,$10(a0)
 
move.b d1,$1F(a0)
 
move.w #0,$26(a0)
 
move.b #0,($FFFFF7AC).w
 
bset #1,($FFFFF7AC).w
 
bsr.w sub_315C7C
 
 
 
return_3165D2:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_TurnSuper:   ; ...
 
move.b #1,($FFFFF65F).w
 
move.b #$F,($FFFFF65E).w
 
move.b #1,($FFFFFE19).w
 
move.w #60,($FFFFF670).w
 
move.b #$81,$2A(a0)
 
move.b #$1F,$1C(a0)
 
move.b #$7E,($FFFFD040).w
 
move.w #$800,($FFFFF760).w
 
move.w #$18,($FFFFF762).w
 
move.w #$C0,($FFFFF764).w
 
move.w #0,$32(a0)
 
bset #1,$2B(a0)
 
move.w #$DF,d0
 
jsr PlaySound
 
move.w #$96,d0
 
jmp PlayMusic
 
; End of function Knuckles_JumpHeight
 
 
 
; ---------------------------------------------------------------------------
 
rts
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Super:   ; ...
 
tst.b ($FFFFFE19).w
 
beq.w return_3166C8
 
tst.b ($FFFFFE1E).w
 
beq.s loc_31667E
 
subq.w #1,($FFFFF670).w
 
bpl.w return_3166C8
 
move.w #60,($FFFFF670).w
 
tst.w ($FFFFFE20).w
 
beq.s loc_31667E
 
or.b #1,($FFFFFE1D).w
 
cmp.w #1,($FFFFFE20).w
 
beq.s loc_316672
 
cmp.w #10,($FFFFFE20).w
 
beq.s loc_316672
 
cmp.w #100,($FFFFFE20).w
 
bne.s loc_316678
 
 
 
loc_316672:   ; ...
 
or.b #%10000000,($FFFFFE1D).w
 
 
 
loc_316678:   ; ...
 
subq.w #1,($FFFFFE20).w
 
bne.s return_3166C8
 
 
 
loc_31667E:   ; ...
 
move.b #2,($FFFFF65F).w
 
move.w #40,($FFFFF65C).w
 
move.b #0,($FFFFFE19).w
 
move.b #1,$1D(a0)
 
move.w #1,$32(a0)
 
move.w #$600,($FFFFF760).w
 
move.w #$C,($FFFFF762).w
 
move.w #$80,($FFFFF764).w
 
btst #6,$22(a0)
 
beq.s return_3166C8
 
move.w #$300,($FFFFF760).w
 
move.w #6,($FFFFF762).w
 
move.w #$40,($FFFFF764).w
 
 
 
return_3166C8:   ; ...
 
rts
 
; End of function Knuckles_Super
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Spindash:   ; ...
 
tst.b $39(a0)
 
bne.s Knuckles_UpdateSpindash
 
cmp.b #8,$1C(a0)
 
bne.s return_316718
 
move.b ($FFFFF603).w,d0
 
and.b #$70,d0
 
beq.w return_316718
 
move.b #9,$1C(a0)
 
move.w #$E0,d0
 
jsr PlaySound
 
addq.l #4,sp
 
move.b #1,$39(a0)
 
move.w #0,$3A(a0)
 
cmp.b #$C,$28(a0)
 
bcs.s loc_316710
 
move.b #2,($FFFFD11C).w
 
 
 
loc_316710:   ; ...
 
bsr.w Knuckles_LevelBoundaries
 
bsr.w AnglePos
 
 
 
return_316718:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_UpdateSpindash:   ; ...
 
move.b ($FFFFF602).w,d0
 
btst #1,d0
 
bne.w Knuckles_ChargingSpindash
 
move.b #$E,$16(a0)
 
move.b #7,$17(a0)
 
move.b #2,$1C(a0)
 
addq.w #5,$C(a0)
 
move.b #0,$39(a0)
 
moveq #0,d0
 
move.b $3A(a0),d0
 
add.w d0,d0
 
move.w Spindash_Speeds(pc,d0.w),$14(a0)
 
tst.b ($FFFFFE19).w
 
beq.s loc_31675C
 
move.w Super_Spindash_Speeds(pc,d0.w),$14(a0)
 
 
 
loc_31675C:   ; ...
 
move.w $14(a0),d0
 
sub.w #$800,d0
 
add.w d0,d0
 
and.w #$1F00,d0
 
neg.w d0
 
add.w #$2000,d0
 
move.w d0,($FFFFEED0).w   ; Lock camera for a certain number of frames
 
btst #0,$22(a0)
 
beq.s loc_316780
 
neg.w $14(a0)
 
 
 
loc_316780:   ; ...
 
bset #2,$22(a0)
 
move.b #0,($FFFFD11C).w
 
move.w #$BC,d0
 
jsr PlaySound
 
bra.s Obj01_Spindash_ResetScreen
 
; ---------------------------------------------------------------------------
 
Spindash_Speeds:   ; ...
 
dc.w  $800, $880, $900, $980, $A00, $A80, $B00, $B80, $C00; 0
 
Super_Spindash_Speeds:   ; ...
 
dc.w  $B00, $B80, $C00, $C80, $D00, $D80, $E00, $E80, $F00; 0
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_ChargingSpindash:   ; ...
 
tst.w $3A(a0)
 
beq.s loc_3167D4
 
move.w $3A(a0),d0
 
lsr.w #5,d0
 
sub.w d0,$3A(a0)
 
bcc.s loc_3167D4
 
move.w #0,$3A(a0)
 
 
 
loc_3167D4:   ; ...
 
move.b ($FFFFF603).w,d0
 
and.b #$70,d0
 
beq.w Obj01_Spindash_ResetScreen
 
move.w #$900,$1C(a0)
 
move.w #$E0,d0
 
jsr PlaySound
 
add.w #$200,$3A(a0)
 
cmp.w #$800,$3A(a0)
 
bcs.s Obj01_Spindash_ResetScreen
 
move.w #$800,$3A(a0)
 
 
 
Obj01_Spindash_ResetScreen:   ; ...
 
addq.l #4,sp
 
cmp.w #$60,($FFFFEED8).w
 
beq.s loc_316818
 
bcc.s loc_316814
 
addq.w #4,($FFFFEED8).w
 
 
 
loc_316814:   ; ...
 
subq.w #2,($FFFFEED8).w
 
 
 
loc_316818:   ; ...
 
bsr.w Knuckles_LevelBoundaries
 
bsr.w AnglePos
 
rts
 
; End of function Knuckles_Spindash
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_SlopeResist:   ; ...
 
move.b $26(a0),d0
 
add.b #$60,d0
 
cmp.b #$C0,d0
 
bcc.s return_316856
 
move.b $26(a0),d0
 
jsr CalcSine
 
muls.w #$20,d0
 
asr.l #8,d0
 
tst.w $14(a0)
 
beq.s return_316856
 
bmi.s loc_316852
 
tst.w d0
 
beq.s return_316850
 
add.w d0,$14(a0)
 
 
 
return_316850:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316852:   ; ...
 
add.w d0,$14(a0)
 
 
 
return_316856:   ; ...
 
rts
 
; End of function Knuckles_SlopeResist
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_RollRepel:   ; ...
 
move.b $26(a0),d0
 
add.b #$60,d0
 
cmp.b #$C0,d0
 
bcc.s return_316892
 
move.b $26(a0),d0
 
jsr CalcSine
 
muls.w #$50,d0
 
asr.l #8,d0
 
tst.w $14(a0)
 
bmi.s loc_316888
 
tst.w d0
 
bpl.s loc_316882
 
asr.l #2,d0
 
 
 
loc_316882:   ; ...
 
add.w d0,$14(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316888:   ; ...
 
tst.w d0
 
bmi.s loc_31688E
 
asr.l #2,d0
 
 
 
loc_31688E:   ; ...
 
add.w d0,$14(a0)
 
 
 
return_316892:   ; ...
 
rts
 
; End of function Knuckles_RollRepel
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_SlopeRepel:   ; ...
 
nop
 
tst.b $38(a0)
 
bne.s return_3168CE
 
tst.w $2E(a0)
 
bne.s loc_3168D0
 
move.b $26(a0),d0
 
add.b #$20,d0
 
and.b #$C0,d0
 
beq.s return_3168CE
 
move.w $14(a0),d0
 
bpl.s loc_3168B8
 
neg.w d0
 
 
 
loc_3168B8:   ; ...
 
cmp.w #$280,d0
 
bcc.s return_3168CE
 
clr.w $14(a0)
 
bset #1,$22(a0)
 
move.w #$1E,$2E(a0)
 
 
 
return_3168CE:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_3168D0:   ; ...
 
subq.w #1,$2E(a0)
 
rts
 
; End of function Knuckles_SlopeRepel
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_JumpAngle:   ; ...
 
move.b $26(a0),d0
 
beq.s Knuckles_JumpFlip
 
bpl.s loc_3168E6
 
addq.b #2,d0
 
bcc.s BraTo_Knuckles_JumpAngleSet
 
moveq #0,d0
 
 
 
BraTo_Knuckles_JumpAngleSet:   ; ...
 
bra.s Knuckles_JumpAngleSet
 
; ---------------------------------------------------------------------------
 
 
 
loc_3168E6:   ; ...
 
subq.b #2,d0
 
bcc.s Knuckles_JumpAngleSet
 
moveq #0,d0
 
 
 
Knuckles_JumpAngleSet:   ; ...
 
move.b d0,$26(a0)
 
 
 
Knuckles_JumpFlip:   ; ...
 
move.b $27(a0),d0
 
beq.s return_316934
 
tst.w $14(a0)
 
bmi.s Knuckles_JumpLeftFlip
 
 
 
Knuckles_JumpRightFlip:   ; ...
 
move.b $2D(a0),d1
 
add.b d1,d0
 
bcc.s BraTo_Knuckles_JumpFlipSet
 
subq.b #1,$2C(a0)
 
bcc.s BraTo_Knuckles_JumpFlipSet
 
move.b #0,$2C(a0)
 
moveq #0,d0
 
 
 
BraTo_Knuckles_JumpFlipSet:   ; ...
 
bra.s Knuckles_JumpFlipSet
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_JumpLeftFlip:   ; ...
 
tst.b $29(a0)
 
bne.s Knuckles_JumpRightFlip
 
move.b $2D(a0),d1
 
sub.b d1,d0
 
bcc.s Knuckles_JumpFlipSet
 
subq.b #1,$2C(a0)
 
bcc.s Knuckles_JumpFlipSet
 
move.b #0,$2C(a0)
 
moveq #0,d0
 
 
 
Knuckles_JumpFlipSet:   ; ...
 
move.b d0,$27(a0)
 
 
 
return_316934:   ; ...
 
rts
 
; End of function Knuckles_JumpAngle
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_DoLevelCollision2:   ; ...
 
move.l #$FFFFD600,($FFFFF796).w
 
cmp.b #$C,$3E(a0)
 
beq.s loc_31694E
 
move.l #$FFFFD900,($FFFFF796).w
 
 
 
loc_31694E:   ; ...
 
move.b $3F(a0),d5
 
move.w $10(a0),d1
 
move.w $12(a0),d2
 
jsr CalcAngle
 
sub.b #$20,d0
 
and.b #$C0,d0
 
cmp.b #$40,d0
 
beq.w Knuckles_HitLeftWall2
 
cmp.b #$80,d0
 
beq.w Knuckles_HitCeilingAndWalls2
 
cmp.b #$C0,d0
 
beq.w Knuckles_HitRightWall2
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s loc_316998
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
loc_316998:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s loc_3169B0
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
loc_3169B0:   ; ...
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_3169CC
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
move.w #0,$12(a0)
 
bclr #1,($FFFFF7AC).w
 
 
 
return_3169CC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitLeftWall2:   ; ...
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s Knuckles_HitCeilingAlt
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
Knuckles_HitCeilingAlt:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s Knuckles_HitFloor
 
neg.w d1
 
cmp.w #$14,d1
 
bcc.s loc_316A08
 
add.w d1,$C(a0)
 
tst.w $12(a0)
 
bpl.s return_316A06
 
move.w #0,$12(a0)
 
 
 
return_316A06:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316A08:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s return_316A20
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
return_316A20:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitFloor:   ; ...
 
tst.w $12(a0)
 
bmi.s return_316A44
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_316A44
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
move.w #0,$12(a0)
 
bclr #1,($FFFFF7AC).w
 
 
 
return_316A44:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitCeilingAndWalls2:   ; ...
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s loc_316A5E
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
loc_316A5E:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s loc_316A76
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
loc_316A76:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s return_316A88
 
sub.w d1,$C(a0)
 
move.w #0,$12(a0)
 
 
 
return_316A88:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitRightWall2:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s loc_316AA2
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
bset #5,($FFFFF7AC).w
 
 
 
loc_316AA2:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s loc_316ABC
 
sub.w d1,$C(a0)
 
tst.w $12(a0)
 
bpl.s return_316ABA
 
move.w #0,$12(a0)
 
 
 
return_316ABA:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316ABC:   ; ...
 
tst.w $12(a0)
 
bmi.s return_316ADE
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_316ADE
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
move.w #0,$12(a0)
 
bclr #1,($FFFFF7AC).w
 
 
 
return_316ADE:   ; ...
 
rts
 
; End of function Knuckles_DoLevelCollision2
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_DoLevelCollision:   ; ...
 
move.l #$FFFFD600,($FFFFF796).w
 
cmp.b #$C,$3E(a0)
 
beq.s loc_316AF8
 
move.l #$FFFFD900,($FFFFF796).w
 
 
 
loc_316AF8:   ; ...
 
move.b $3F(a0),d5
 
move.w $10(a0),d1
 
move.w $12(a0),d2
 
jsr CalcAngle
 
sub.b #$20,d0
 
and.b #$C0,d0
 
cmp.b #$40,d0
 
beq.w Knuckles_HitLeftWall
 
cmp.b #$80,d0
 
beq.w Knuckles_HitCeilingAndWalls
 
cmp.b #$C0,d0
 
beq.w Knuckles_HitRightWall
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s loc_316B3C
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
 
 
loc_316B3C:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s loc_316B4E
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
 
 
loc_316B4E:   ; ...
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_316BC0
 
move.b $12(a0),d2
 
addq.b #8,d2
 
neg.b d2
 
cmp.b d2,d1
 
bge.s loc_316B66
 
cmp.b d2,d0
 
blt.s return_316BC0
 
 
 
loc_316B66:   ; ...
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
bsr.w Knuckles_ResetOnFloor
 
move.b d3,d0
 
add.b #$20,d0
 
and.b #$40,d0
 
bne.s loc_316B9E
 
move.b d3,d0
 
add.b #$10,d0
 
and.b #$20,d0
 
beq.s loc_316B90
 
asr $12(a0)
 
bra.s loc_316BB2
 
; ---------------------------------------------------------------------------
 
 
 
loc_316B90:   ; ...
 
move.w #0,$12(a0)
 
move.w $10(a0),$14(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316B9E:   ; ...
 
move.w #0,$10(a0)
 
cmp.w #$FC0,$12(a0)
 
ble.s loc_316BB2
 
move.w #$FC0,$12(a0)
 
 
 
loc_316BB2:   ; ...
 
move.w $12(a0),$14(a0)
 
tst.b d3
 
bpl.s return_316BC0
 
neg.w $14(a0)
 
 
 
return_316BC0:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitLeftWall:   ; ...
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s Knuckles_HitCeiling
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
move.w $12(a0),$14(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitCeiling:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s Knuckles_HitFloor_0
 
sub.w d1,$C(a0)
 
tst.w $12(a0)
 
bpl.s return_316BF4
 
move.w #0,$12(a0)
 
 
 
return_316BF4:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitFloor_0:   ; ...
 
tst.w $12(a0)
 
bmi.s return_316C1C
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_316C1C
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
bsr.w Knuckles_ResetOnFloor
 
move.w #0,$12(a0)
 
move.w $10(a0),$14(a0)
 
 
 
return_316C1C:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitCeilingAndWalls:   ; ...
 
bsr.w CheckLeftWallDist
 
tst.w d1
 
bpl.s loc_316C30
 
sub.w d1,8(a0)
 
move.w #0,$10(a0)
 
 
 
loc_316C30:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s loc_316C42
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
 
 
loc_316C42:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s return_316C78
 
sub.w d1,$C(a0)
 
move.b d3,d0
 
add.b #$20,d0
 
and.b #$40,d0
 
bne.s loc_316C62
 
move.w #0,$12(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316C62:   ; ...
 
move.b d3,$26(a0)
 
bsr.w Knuckles_ResetOnFloor
 
move.w $12(a0),$14(a0)
 
tst.b d3
 
bpl.s return_316C78
 
neg.w $14(a0)
 
 
 
return_316C78:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitRightWall:   ; ...
 
bsr.w CheckRightWallDist
 
tst.w d1
 
bpl.s Knuckles_HitCeiling2
 
add.w d1,8(a0)
 
move.w #0,$10(a0)
 
move.w $12(a0),$14(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitCeiling2:   ; ...
 
bsr.w CheckCeilingDist
 
tst.w d1
 
bpl.s Knuckles_HitFloor2
 
sub.w d1,$C(a0)
 
tst.w $12(a0)
 
bpl.s return_316CAC
 
move.w #0,$12(a0)
 
 
 
return_316CAC:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Knuckles_HitFloor2:   ; ...
 
tst.w $12(a0)
 
bmi.s return_316CD4
 
bsr.w Player_CheckFloor
 
tst.w d1
 
bpl.s return_316CD4
 
add.w d1,$C(a0)
 
move.b d3,$26(a0)
 
bsr.w Knuckles_ResetOnFloor
 
move.w #0,$12(a0)
 
move.w $10(a0),$14(a0)
 
 
 
return_316CD4:   ; ...
 
rts
 
; End of function Knuckles_DoLevelCollision
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_ResetOnFloor:   ; ...
 
tst.b $39(a0)
 
bne.s Knuckles_ResetOnFloor_Part3
 
move.b #0,$1C(a0)
 
; End of function Knuckles_ResetOnFloor
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_ResetOnFloor_Part2:   ; ...
 
move.b $16(a0),d0
 
move.b #$13,$16(a0)
 
move.b #9,$17(a0)
 
btst #2,$22(a0)
 
beq.s Knuckles_ResetOnFloor_Part3
 
bclr #2,$22(a0)
 
move.b #0,$1C(a0)
 
sub.b #$13,d0
 
ext.w d0
 
add.w d0,$C(a0)
 
 
 
Knuckles_ResetOnFloor_Part3:   ; ...
 
bclr #1,$22(a0)
 
bclr #5,$22(a0)
 
bclr #4,$22(a0)
 
move.b #0,$3C(a0)
 
move.w #0,($FFFFF7D0).w
 
move.b #0,$27(a0)
 
move.b #0,$29(a0)
 
move.b #0,$2C(a0)
 
move.w #0,($FFFFF66C).w
 
move.b #0,$21(a0)
 
cmp.b #$20,$1C(a0)
 
bcc.s loc_316D5C
 
cmp.b #$14,$1C(a0)
 
bne.s return_316D62
 
 
 
loc_316D5C:   ; ...
 
move.b #0,$1C(a0)
 
 
 
return_316D62:   ; ...
 
rts
 
; End of function Knuckles_ResetOnFloor_Part2
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj01_Hurt:   ; ...
 
 
 
; FUNCTION CHUNK AT 00316E14 SIZE 0000001C BYTES
 
 
 
tst.w ($FFFFFFDA).w
 
beq.s Obj01_Hurt_Normal
 
btst #4,($FFFFF605).w
 
beq.s Obj01_Hurt_Normal
 
move.w #1,($FFFFFE08).w
 
clr.b ($FFFFF7CC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_Hurt_Normal:   ; ...
 
tst.b $25(a0)
 
bmi.w Knuckles_HurtInstantRecover
 
jsr ObjectMove   ; AKA SpeedToPos in Sonic 1
 
add.w #$30,$12(a0)
 
btst #6,$22(a0)
 
beq.s loc_316DA0
 
sub.w #$20,$12(a0)
 
 
 
loc_316DA0:   ; ...
 
cmp.w #$FF00,($FFFFEECC).w
 
bne.s loc_316DAE
 
and.w #$7FF,$C(a0)
 
 
 
loc_316DAE:   ; ...
 
bsr.w Knuckles_HurtStop
 
bsr.w Knuckles_LevelBoundaries
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Animate
 
bsr.w LoadKnucklesDynPLC
 
jmp DisplaySprite
 
; End of function Obj01_Hurt
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_HurtStop:   ; ...
 
move.w ($FFFFEECE).w,d0
 
add.w #$E0,d0
 
cmp.w $C(a0),d0
 
blt.w JmpTo_KillCharacter
 
bsr.w Knuckles_DoLevelCollision
 
btst #1,$22(a0)
 
bne.s return_316E0C
 
moveq #0,d0
 
move.w d0,$12(a0)
 
move.w d0,$10(a0)
 
move.w d0,$14(a0)
 
move.b d0,$2A(a0)
 
move.b #0,$1C(a0)
 
subq.b #2,$24(a0)
 
move.w #$78,$30(a0)
 
move.b #0,$39(a0)
 
 
 
return_316E0C:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
JmpTo_KillCharacter:   ; ...
 
jmp KillCharacter
 
; End of function Knuckles_HurtStop
 
 
 
; ---------------------------------------------------------------------------
 
; START OF FUNCTION CHUNK FOR Obj01_Hurt
 
 
 
Knuckles_HurtInstantRecover:   ; ...
 
subq.b #2,$24(a0)
 
move.b #0,$25(a0)
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Animate
 
bsr.w LoadKnucklesDynPLC
 
jmp DisplaySprite
 
; END OF FUNCTION CHUNK FOR Obj01_Hurt
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj01_Dead:   ; ...
 
tst.w ($FFFFFFDA).w
 
beq.s loc_316E4A
 
btst #4,($FFFFF605).w
 
beq.s loc_316E4A
 
move.w #1,($FFFFFE08).w
 
clr.b ($FFFFF7CC).w
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
loc_316E4A:   ; ...
 
bsr.w CheckGameOver
 
jsr ObjectMoveAndFall
 
bsr.w Knuckles_RecordPositions
 
bsr.w Knuckles_Animate
 
bsr.w LoadKnucklesDynPLC
 
jmp DisplaySprite
 
; End of function Obj01_Dead
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
CheckGameOver:   ; ...
 
move.b #1,($FFFFEEBE).w
 
move.b #0,$39(a0)
 
move.w ($FFFFEECE).w,d0
 
add.w #$100,d0
 
cmp.w $C(a0),d0
 
bge.w return_316F64
 
move.b #8,$24(a0)
 
move.w #$3C,$3A(a0)
 
addq.b #1,($FFFFFE1C).w
 
subq.b #1,($FFFFFE12).w
 
bne.s Obj01_ResetLevel
 
move.w #0,$3A(a0)
 
move.b #$39,($FFFFB080).w
 
move.b #$39,($FFFFB0C0).w
 
move.b #1,($FFFFB0DA).w
 
move.w a0,($FFFFB0BE).w
 
clr.b ($FFFFFE1A).w
 
 
 
Obj01_Finished:   ; ...
 
clr.b ($FFFFFE1E).w
 
clr.b ($FFFFFECA).w
 
move.b #8,$24(a0)
 
move.w #$9B,d0
 
jsr PlayMusic
 
moveq #3,d0
 
jmp LoadPLC
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_ResetLevel:   ; ...
 
tst.b ($FFFFFE1A).w
 
beq.s Obj01_ResetLevel_Part2
 
move.w #0,$3A(a0)
 
move.b #$39,($FFFFB080).w
 
move.b #$39,($FFFFB0C0).w
 
move.b #2,($FFFFB09A).w
 
move.b #3,($FFFFB0DA).w
 
move.w a0,($FFFFB0BE).w
 
bra.s Obj01_Finished
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_ResetLevel_Part2:   ; ...
 
tst.w ($FFFFFFDC).w
 
beq.s return_316F64
 
move.b #0,($FFFFEEBE).w
 
move.b #$A,$24(a0)
 
move.w ($FFFFFE32).w,8(a0)
 
move.w ($FFFFFE34).w,$C(a0)
 
move.w ($FFFFFE3C).w,2(a0)
 
move.w ($FFFFFE3E).w,$3E(a0)
 
clr.w ($FFFFFE20).w
 
clr.b ($FFFFFE1B).w
 
move.b #0,$2A(a0)
 
move.b #5,$1C(a0)
 
move.w #0,$10(a0)
 
move.w #0,$12(a0)
 
move.w #0,$14(a0)
 
move.b #2,$22(a0)
 
move.w #0,$2E(a0)
 
move.w #0,$3A(a0)
 
 
 
return_316F64:   ; ...
 
rts
 
; End of function CheckGameOver
 
 
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Obj01_Gone:   ; ...
 
tst.w $3A(a0)
 
beq.s return_316F78
 
subq.w #1,$3A(a0)
 
bne.s return_316F78
 
move.w #1,($FFFFFE02).w
 
 
 
return_316F78:   ; ...
 
rts
 
; End of function Obj01_Gone
 
 
 
; ---------------------------------------------------------------------------
 
 
 
Obj01_Respawning:   ; ...
 
tst.w ($FFFFEEB0).w
 
bne.s loc_316F8C
 
tst.w ($FFFFEEB2).w
 
bne.s loc_316F8C
 
move.b #2,$24(a0)
 
 
 
loc_316F8C:   ; ...
 
bsr.w Knuckles_Animate
 
bsr.w LoadKnucklesDynPLC
 
jmp DisplaySprite
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
Knuckles_Animate:   ; ...
 
lea (KnucklesAniData).l,a1
 
moveq #0,d0
 
move.b $1C(a0),d0
 
cmp.b $1D(a0),d0
 
beq.s KAnim_Do
 
move.b d0,$1D(a0)
 
move.b #0,$1B(a0)
 
move.b #0,$1E(a0)
 
bclr #5,$22(a0)
 
 
 
KAnim_Do:   ; ...
 
add.w d0,d0
 
add.w (a1,d0.w),a1
 
move.b (a1),d0
 
bmi.s KAnim_WalkRun
 
move.b $22(a0),d1
 
and.b #1,d1
 
and.b #$FC,1(a0)
 
or.b d1,1(a0)
 
subq.b #1,$1E(a0)
 
bpl.s KAnim_Delay
 
move.b d0,$1E(a0)
 
 
 
KAnim_Do2:   ; ...
 
moveq #0,d1
 
move.b $1B(a0),d1
 
move.b 1(a1,d1.w),d0
 
cmp.b #$FC,d0
 
bcc.s KAnim_End_FF
 
 
 
KAnim_Next:   ; ...
 
move.b d0,$1A(a0)
 
addq.b #1,$1B(a0)
 
 
 
KAnim_Delay:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_End_FF:   ; ...
 
addq.b #1,d0
 
bne.s KAnim_End_FE
 
move.b #0,$1B(a0)
 
move.b 1(a1),d0
 
bra.s KAnim_Next
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_End_FE:   ; ...
 
addq.b #1,d0
 
bne.s KAnim_End_FD
 
move.b 2(a1,d1.w),d0
 
sub.b d0,$1B(a0)
 
sub.b d0,d1
 
move.b 1(a1,d1.w),d0
 
bra.s KAnim_Next
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_End_FD:   ; ...
 
addq.b #1,d0
 
bne.s KAnim_End
 
move.b 2(a1,d1.w),$1C(a0)
 
 
 
KAnim_End:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_WalkRun:   ; ...
 
addq.b #1,d0
 
bne.w KAnim_Roll
 
moveq #0,d0
 
move.b $27(a0),d0
 
bne.w KAnim_Tumble
 
moveq #0,d1
 
move.b $26(a0),d0
 
bmi.s loc_31704E
 
beq.s loc_31704E
 
subq.b #1,d0
 
 
 
loc_31704E:   ; ...
 
move.b $22(a0),d2
 
and.b #1,d2
 
bne.s loc_31705A
 
not.b d0
 
 
 
loc_31705A:   ; ...
 
add.b #$10,d0
 
bpl.s loc_317062
 
moveq #3,d1
 
 
 
loc_317062:   ; ...
 
and.b #$FC,1(a0)
 
eor.b d1,d2
 
or.b d2,1(a0)
 
btst #5,$22(a0)
 
bne.w KAnim_Push
 
lsr.b #4,d0
 
and.b #6,d0
 
move.w $14(a0),d2
 
bpl.s loc_317086
 
neg.w d2
 
 
 
loc_317086:   ; ...
 
tst.b $2B(a0)
 
bpl.w loc_317090
 
add.w d2,d2
 
 
 
loc_317090:   ; ...
 
lea (KnucklesAni_Run).l,a1
 
cmp.w #$600,d2
 
bcc.s loc_3170A4
 
lea (KnucklesAni_Walk).l,a1
 
add.b d0,d0
 
 
 
loc_3170A4:   ; ...
 
add.b d0,d0
 
move.b d0,d3
 
moveq #0,d1
 
move.b $1B(a0),d1
 
move.b 1(a1,d1.w),d0
 
cmp.b #$FF,d0
 
bne.s loc_3170C2
 
move.b #0,$1B(a0)
 
move.b 1(a1),d0
 
 
 
loc_3170C2:   ; ...
 
move.b d0,$1A(a0)
 
add.b d3,$1A(a0)
 
subq.b #1,$1E(a0)
 
bpl.s return_3170E4
 
neg.w d2
 
add.w #$800,d2
 
bpl.s loc_3170DA
 
moveq #0,d2
 
 
 
loc_3170DA:   ; ...
 
lsr.w #8,d2
 
move.b d2,$1E(a0)
 
addq.b #1,$1B(a0)
 
 
 
return_3170E4:   ; ...
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_Tumble:   ; ...
 
move.b $27(a0),d0
 
moveq #0,d1
 
move.b $22(a0),d2
 
and.b #1,d2
 
bne.s KAnim_Tumble_Left
 
and.b #$FC,1(a0)
 
add.b #$B,d0
 
divu.w #$16,d0
 
add.b #$31,d0
 
move.b d0,$1A(a0)
 
move.b #0,$1E(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_Tumble_Left:   ; ...
 
and.b #$FC,1(a0)
 
tst.b $29(a0)
 
beq.s loc_31712C
 
or.b #1,1(a0)
 
add.b #$B,d0
 
bra.s loc_317138
 
; ---------------------------------------------------------------------------
 
 
 
loc_31712C:   ; ...
 
or.b #3,1(a0)
 
neg.b d0
 
add.b #-$71,d0
 
 
 
loc_317138:   ; ...
 
divu.w #$16,d0
 
add.b #$31,d0
 
move.b d0,$1A(a0)
 
move.b #0,$1E(a0)
 
rts
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_Roll:   ; ...
 
subq.b #1,$1E(a0)
 
bpl.w KAnim_Delay
 
addq.b #1,d0
 
bne.s KAnim_Push
 
move.w $14(a0),d2
 
bpl.s loc_317160
 
neg.w d2
 
 
 
loc_317160:   ; ...
 
lea (KnucklesAni_Roll2).l,a1
 
cmp.w #$600,d2
 
bcc.s loc_317172
 
lea (KnucklesAni_Roll).l,a1
 
 
 
loc_317172:   ; ...
 
neg.w d2
 
add.w #$400,d2
 
bpl.s loc_31717C
 
moveq #0,d2
 
 
 
loc_31717C:   ; ...
 
lsr.w #8,d2
 
move.b d2,$1E(a0)
 
move.b $22(a0),d1
 
and.b #1,d1
 
and.b #$FC,1(a0)
 
or.b d1,1(a0)
 
bra.w KAnim_Do2
 
; ---------------------------------------------------------------------------
 
 
 
KAnim_Push:   ; ...
 
subq.b #1,$1E(a0)
 
bpl.w KAnim_Delay
 
move.w $14(a0),d2
 
bmi.s loc_3171A8
 
neg.w d2
 
 
 
loc_3171A8:   ; ...
 
add.w #$800,d2
 
bpl.s loc_3171B0
 
moveq #0,d2
 
 
 
loc_3171B0:   ; ...
 
lsr.w #8,d2
 
move.b d2,$1E(a0)
 
lea (KnucklesAni_Push).l,a1
 
move.b $22(a0),d1
 
and.b #1,d1
 
and.b #$FC,1(a0)
 
or.b d1,1(a0)
 
bra.w KAnim_Do2
 
; End of function Knuckles_Animate
 
 
 
; ---------------------------------------------------------------------------
 
KnucklesAniData:dc.w KnucklesAni_Walk-KnucklesAniData; 0 ; ...
 
dc.w KnucklesAni_Run-KnucklesAniData; 1
 
dc.w KnucklesAni_Roll-KnucklesAniData; 2
 
dc.w KnucklesAni_Roll2-KnucklesAniData; 3
 
dc.w KnucklesAni_Push-KnucklesAniData; 4
 
dc.w KnucklesAni_Wait-KnucklesAniData; 5
 
dc.w KnucklesAni_Balance-KnucklesAniData; 6
 
dc.w KnucklesAni_LookUp-KnucklesAniData; 7
 
dc.w KnucklesAni_Duck-KnucklesAniData; 8
 
dc.w KnucklesAni_Spindash-KnucklesAniData; 9
 
dc.w KnucklesAni_Unused-KnucklesAniData; 10
 
dc.w KnucklesAni_Pull-KnucklesAniData; 11
 
dc.w KnucklesAni_Balance2-KnucklesAniData; 12
 
dc.w KnucklesAni_Stop-KnucklesAniData; 13
 
dc.w KnucklesAni_Float-KnucklesAniData; 14
 
dc.w KnucklesAni_Float2-KnucklesAniData; 15
 
dc.w KnucklesAni_Spring-KnucklesAniData; 16
 
dc.w KnucklesAni_Hang-KnucklesAniData; 17
 
dc.w KnucklesAni_Unused_0-KnucklesAniData; 18
 
dc.w KnucklesAni_S3EndingPose-KnucklesAniData; 19
 
dc.w KnucklesAni_WFZHang-KnucklesAniData; 20
 
dc.w KnucklesAni_Bubble-KnucklesAniData; 21
 
dc.w KnucklesAni_DeathBW-KnucklesAniData; 22
 
dc.w KnucklesAni_Drown-KnucklesAniData; 23
 
dc.w KnucklesAni_Death-KnucklesAniData; 24
 
dc.w KnucklesAni_OilSlide-KnucklesAniData; 25
 
dc.w KnucklesAni_Hurt-KnucklesAniData; 26
 
dc.w KnucklesAni_OilSlide_0-KnucklesAniData; 27
 
dc.w KnucklesAni_Blank-KnucklesAniData; 28
 
dc.w KnucklesAni_Unused_1-KnucklesAniData; 29
 
dc.w KnucklesAni_Unused_2-KnucklesAniData; 30
 
dc.w KnucklesAni_Transform-KnucklesAniData; 31
 
dc.w KnucklesAni_Gliding-KnucklesAniData; 32
 
dc.w KnucklesAni_FallFromGlide-KnucklesAniData; 33
 
dc.w KnucklesAni_GetUp-KnucklesAniData; 34
 
dc.w KnucklesAni_HardFall-KnucklesAniData; 35
 
dc.w KnucklesAni_Badass-KnucklesAniData; 36
 
KnucklesAni_Walk:dc.b $FF,  7, 8,  1, 2,  3, 4,  5, 6,$FF; 0 ; ...
 
KnucklesAni_Run:dc.b $FF,$21,$22,$23,$24,$FF,$FF,$FF,$FF,$FF; 0 ; ...
 
KnucklesAni_Roll:dc.b $FE,$9A,$96,$9A,$97,$9A,$98,$9A,$99,$FF; 0 ; ...
 
KnucklesAni_Roll2:dc.b $FE,$9A,$96,$9A,$97,$9A,$98,$9A,$99,$FF; 0 ; ...
 
KnucklesAni_Push:dc.b $FD,$CE,$CF,$D0,$D1,$FF,$FF,$FF,$FF,$FF; 0 ; ...
 
KnucklesAni_Wait:dc.b 5,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56; 0 ; ...
 
dc.b $56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56; 13
 
dc.b $56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56; 26
 
dc.b $56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$56,$D2; 39
 
dc.b $D2,$D2,$D3,$D3,$D3,$D2,$D2,$D2,$D3,$D3,$D3,$D2,$D2; 52
 
dc.b $D2,$D3,$D3,$D3,$D2,$D2,$D2,$D3,$D3,$D3,$D2,$D2,$D2; 65
 
dc.b $D3,$D3,$D3,$D2,$D2,$D2,$D3,$D3,$D3,$D2,$D2,$D2,$D3; 78
 
dc.b $D3,$D3,$D2,$D2,$D2,$D3,$D3,$D3,$D2,$D2,$D2,$D3,$D3; 91
 
dc.b $D3,$D4,$D4,$D4,$D4,$D4,$D7,$D8,$D9,$DA,$DB,$D8,$D9; 104
 
dc.b $DA,$DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA; 117
 
dc.b $DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB; 130
 
dc.b $DC,$DD,$DC,$DD,$DE,$DE,$D8,$D7,$FF; 143
 
KnucklesAni_Balance:dc.b  3,$9F,$9F,$A0,$A0,$A1,$A1,$A2,$A2,$A3,$A3,$A4,$A4; 0 ; ...
 
dc.b $A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5; 13
 
dc.b $A5,$A5,$A6,$A6,$A6,$A7,$A7,$A7,$A8,$A8,$A9,$A9,$AA; 26
 
dc.b $AA,$FE,  6   ; 39
 
KnucklesAni_LookUp:dc.b   5,$D5,$D6,$FE,  1     ; 0 ; ...
 
KnucklesAni_Duck:dc.b 5,$9B,$9C,$FE, 1   ; 0 ; ...
 
KnucklesAni_Spindash:dc.b  0,$86,$87,$86,$88,$86,$89,$86,$8A,$86,$8B,$FF; 0 ; ...
 
KnucklesAni_Unused:dc.b   9,$BA,$C5,$C6,$C6,$C6,$C6,$C6,$C6,$C7,$C7,$C7,$C7; 0 ; ...
 
dc.b $C7,$C7,$C7,$C7,$C7,$C7,$C7,$C7,$FD,  0; 13
 
KnucklesAni_Pull:dc.b  $F,$8F,$FF   ; 0 ; ...
 
KnucklesAni_Balance2:dc.b  3,$A1,$A1,$A2,$A2,$A3,$A3,$A4,$A4,$A5,$A5,$A5,$A5; 0 ; ...
 
dc.b $A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A5,$A6,$A6; 13
 
dc.b $A6,$A7,$A7,$A7,$A8,$A8,$A9,$A9,$AA,$AA,$FE; 26
 
dc.b  6
 
KnucklesAni_Stop:dc.b 3,$9D,$9E,$9F,$A0,$FD, 0  ; 0 ; ...
 
KnucklesAni_Float:dc.b 7,$C0,$FF     ; 0 ; ...
 
KnucklesAni_Float2:dc.b   5,$C0,$C1,$C2,$C3,$C4,$C5,$C6,$C7,$C8,$C9,$FF; 0 ; ...
 
KnucklesAni_Spring:dc.b $2F,$8E,$FD,  0     ; 0 ; ...
 
KnucklesAni_Hang:dc.b 1,$AE,$AF,$FF   ; 0 ; ...
 
KnucklesAni_Unused_0:dc.b  $F,$43,$43,$43,$FE, 1      ; 0 ; ...
 
KnucklesAni_S3EndingPose:dc.b 5,$B1,$B2,$B2,$B2,$B3,$B4,$FE, 1,  7,$B1,$B3,$B3; 0 ; ...
 
dc.b $B3,$B3,$B3,$B3,$B2,$B3,$B4,$B3,$FE,  4; 13
 
KnucklesAni_WFZHang:dc.b $13,$91,$FF       ; 0 ; ...
 
KnucklesAni_Bubble:dc.b $B,$B0,$B0,  3,  4,$FD,  0  ; 0 ; ...
 
KnucklesAni_DeathBW:dc.b $20,$AC,$FF       ; 0 ; ...
 
KnucklesAni_Drown:dc.b $20,$AD,$FF     ; 0 ; ...
 
KnucklesAni_Death:dc.b $20,$AB,$FF     ; 0 ; ...
 
KnucklesAni_OilSlide:dc.b  9,$8C,$FF       ; 0 ; ...
 
KnucklesAni_Hurt:dc.b $40,$8D,$FF   ; 0 ; ...
 
KnucklesAni_OilSlide_0:dc.b  9,$8C,$FF ; 0 ; ...
 
KnucklesAni_Blank:dc.b $77,  0,$FF     ; 0 ; ...
 
KnucklesAni_Unused_1:dc.b $13,$D0,$D1,$FF       ; 0 ; ...
 
KnucklesAni_Unused_2:dc.b  3,$CF,$C8,$C9,$CA,$CB,$FE  ; 0 ; ...
 
dc.b  4
 
KnucklesAni_Gliding:dc.b $1F,$C0,$FF       ; 0 ; ...
 
KnucklesAni_FallFromGlide:dc.b 7,$CA,$CB,$FE, 1     ; 0 ; ...
 
KnucklesAni_GetUp:dc.b $F,$CD,$FD,  0     ; 0 ; ...
 
KnucklesAni_HardFall:dc.b  $F,$9C,$FD, 0       ; 0 ; ...
 
KnucklesAni_Badass:dc.b   5,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB; 0 ; ...
 
dc.b $D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB,$D8,$D9,$DA,$DB,$D8; 13
 
dc.b $D9,$DA,$DB,$D8,$D9,$DA,$DB,$DC,$DD,$DC,$DD,$DE,$DE; 26
 
dc.b $FF   ; 39
 
KnucklesAni_Transform:dc.b  2,$EB,$EB,$EC,$ED,$EC,$ED,$EC,$ED,$EC,$ED,$EC,$ED; 0 ; ...
 
dc.b $FD,  0,  0   ; 13
 
 
 
; =============== S U B R O U T I N E =======================================
 
 
 
 
 
LoadKnucklesDynPLC:   ; ...
 
moveq #0,d0
 
move.b $1A(a0),d0
 
; End of function LoadKnucklesDynPLC
 
 
 
; START OF FUNCTION CHUNK FOR sub_333D66
 
 
 
LoadKnucklesDynPLC_Part2:   ; ...
 
cmp.b ($FFFFF766).w,d0
 
beq.w return_31753E
 
move.b d0,($FFFFF766).w
 
lea (SK_PLC_Knuckles).l,a2   ; SK_PLC_Knuckles
 
add.w d0,d0
 
add.w (a2,d0.w),a2
 
move.w (a2)+,d5
 
subq.w #1,d5
 
bmi.w return_31753E
 
moveq #0,d3
 
lea ($FFFFF100).w,a3   ; RAM address where the converted art will be stored
 
lea ArtConvTable(pc),a4   ; Load art-conversion table
 
 
 
KPLC_ReadEntry:   ; ...
 
moveq #0,d0
 
moveq #0,d1
 
move.w (a2)+,d1
 
move.w d1,d4
 
rol.w #4,d4
 
and.w #$F,d4
 
addq.w #1,d3
 
add.w d4,d3
 
and.w #$FFF,d1
 
lsl.l #5,d1
 
lea (SK_ArtUnc_Knux).l,a1   ; SK_ArtUnc_Knux
 
add.l d1,a1
 
 
 
KPLC_ConvertArtFromS3K:   ; ...
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+
 
move.b (a1)+,d0
 
move.b (a4,d0.w),(a3)+   ; Repeated $20 times
 
dbf d4,KPLC_ConvertArtFromS3K
 
dbf d5,KPLC_ReadEntry
 
move.l #$FFF100,d1   ; RAM address where the converted art was stored
 
move.w #$F000,d2   ; VRAM address for Knuckles' art
 
lsl.w #4,d3
 
jmp QueueDMATransfer
 
; ---------------------------------------------------------------------------
 
 
 
return_31753E:   ; ...
 
rts
 
; END OF FUNCTION CHUNK FOR sub_333D66
 
; ---------------------------------------------------------------------------
 
; This table converts art using palette indexes set for S&K to palette indexes set for S2.
 
; Format: The rightmost nybble of entry X in any row = the new index that replaces color X.
 
; Similarly, the leftmost nybble of entry X in any column = the new index that replaces color X.
 
;
 
; Specific replacements:
 
;
 
; $0 -> $0
 
; $1 -> $6
 
; $2 -> $5
 
; $3 -> $3
 
; $4 -> $2
 
; $5 -> $4
 
; $6 -> $C
 
; $7 -> $D
 
; $8 -> $E
 
; $9 -> $F
 
; $A -> $A
 
; $B -> $B
 
; $C -> $7
 
; $D -> $8
 
; $E -> $9
 
; $F -> $1
 
; ---------------------------------------------------------------------------
 
ArtConvTable: dc.b $00,$06,$05,$03,$02,$04,$0C,$0D,$0E,$0F,$0A,$0B,$07,$08,$09,$01; 0 ; ...
 
dc.b $60,$66,$65,$63,$62,$64,$6C,$6D,$6E,$6F,$6A,$6B,$67,$68,$69,$61; 16
 
dc.b $50,$56,$55,$53,$52,$54,$5C,$5D,$5E,$5F,$5A,$5B,$57,$58,$59,$51; 32
 
dc.b $30,$36,$35,$33,$32,$34,$3C,$3D,$3E,$3F,$3A,$3B,$37,$38,$39,$31; 48
 
dc.b $20,$26,$25,$23,$22,$24,$2C,$2D,$2E,$2F,$2A,$2B,$27,$28,$29,$21; 64
 
dc.b $40,$46,$45,$43,$42,$44,$4C,$4D,$4E,$4F,$4A,$4B,$47,$48,$49,$41; 80
 
dc.b $C0,$C6,$C5,$C3,$C2,$C4,$CC,$CD,$CE,$CF,$CA,$CB,$C7,$C8,$C9,$C1; 96
 
dc.b $D0,$D6,$D5,$D3,$D2,$D4,$DC,$DD,$DE,$DF,$DA,$DB,$D7,$D8,$D9,$D1; 112
 
dc.b $E0,$E6,$E5,$E3,$E2,$E4,$EC,$ED,$EE,$EF,$EA,$EB,$E7,$E8,$E9,$E1; 128
 
dc.b $F0,$F6,$F5,$F3,$F2,$F4,$FC,$FD,$FE,$FF,$FA,$FB,$F7,$F8,$F9,$F1; 144
 
dc.b $A0,$A6,$A5,$A3,$A2,$A4,$AC,$AD,$AE,$AF,$AA,$AB,$A7,$A8,$A9,$A1; 160
 
dc.b $B0,$B6,$B5,$B3,$B2,$B4,$BC,$BD,$BE,$BF,$BA,$BB,$B7,$B8,$B9,$B1; 176
 
dc.b $70,$76,$75,$73,$72,$74,$7C,$7D,$7E,$7F,$7A,$7B,$77,$78,$79,$71; 192
 
dc.b $80,$86,$85,$83,$82,$84,$8C,$8D,$8E,$8F,$8A,$8B,$87,$88,$89,$81; 208
 
dc.b $90,$96,$95,$93,$92,$94,$9C,$9D,$9E,$9F,$9A,$9B,$97,$98,$99,$91; 224
 
dc.b $10,$16,$15,$13,$12,$14,$1C,$1D,$1E,$1F,$1A,$1B,$17,$18,$19,$11; 240
 
; ---------------------------------------------------------------------------
 
</asm>
 
Change all "Obj01"s to "Obj4C"s.
 
==And we're done!==
 
Finally, we can stop worrying about Knuckles' code and get on with our lives. :3
 
 
 
EDIT: There are quite a few errors with this, so if one of the Tech Members could help me by explaining how to fix these errors, that would be great.
 

Latest revision as of 21:56, 31 May 2022

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