Sonic 1 Beta Remake

You know, I never thought of that, That just might work. Daylight, Evening, Night... hmmm...

 

Way ahead of you, I fixed them up to correspond with the sky.

 

So after being bored off my ass and experimenting with routines, I have given the Checkered ball from GHZ some physics. It's not pictured, but when the ball falls off a cliff, it bounces a little bit, of course, getting under it is a very BAD idea, unless you like seeing Sonic getting squashed by a giant ball. You don't notice it in the screen yet, but it actually bounces until it comes to a complete halt.

Now to figure out how to make it roll faster down a slope and slower up a slope. I dub the bouncing quite an accomplishment so far to be honest. I tried looking at Sonic's Slope subroutines but I have NO clue how to make a similar WORKING subroutine for the checkered ball. Specifically... These two subroutines...

<div class='codetop'>CODE</div><div class='codemain' style='height:200px;white-space:pre;overflow:auto'>
Sonic_SlopeResist: ; XREF: Obj01_MdNormal
move.b $26(a0),d0
addi.b #$60,d0
cmpi.b #$C0,d0
bcc.s locret_13508
move.b $26(a0),d0
jsr (CalcSine).l
muls.w #$20,d0
asr.l #8,d0
tst.w $14(a0)
beq.s locret_13508
bmi.s loc_13504
tst.w d0
beq.s locret_13502
add.w d0,$14(a0) ; change Sonic's inertia

locret_13502:
rts
; ===========================================================================

loc_13504:
add.w d0,$14(a0)

locret_13508:
rts
; End of function Sonic_SlopeResist

; ---------------------------------------------------------------------------
; Subroutine to push Sonic down a slope while he's rolling
; ---------------------------------------------------------------------------

; ||||||||||||||| S U B R O U T I N E |||||||||||||||||||||||||||||||||||||||


-Sonic_RollRepel: ; XREF: Obj01_MdRoll
move.b $26(a0),d0
addi.b #$60,d0
cmpi.b #-$40,d0
bcc.s locret_13544
move.b $26(a0),d0
jsr (CalcSine).l
muls.w #$50,d0
asr.l #8,d0
tst.w $14(a0)
bmi.s loc_1353A
tst.w d0
bpl.s loc_13534
asr.l #2,d0

loc_13534:
add.w d0,$14(a0)
rts
; ===========================================================================

loc_1353A:
tst.w d0
bmi.s loc_13540
asr.l #2,d0

loc_13540:
add.w d0,$14(a0)

locret_13544:
rts
; End of function Sonic_RollRepel
</div>

and...

<div class='codetop'>CODE</div><div class='codemain' style='height:200px;white-space:pre;overflow:auto'>Sonic_SlopeRepel: ; XREF: Obj01_MdNormal; Obj01_MdRoll
nop
tst.b $38(a0)
bne.s locret_13580
tst.w $3E(a0)
bne.s loc_13582
move.b $26(a0),d0
addi.b #$20,d0
andi.b #$C0,d0
beq.s locret_13580
move.w $14(a0),d0
bpl.s loc_1356A
neg.w d0

loc_1356A:
cmpi.w #$280,d0
bcc.s locret_13580
clr.w $14(a0)
bset #1,$22(a0)
move.w #$1E,$3E(a0)

locret_13580:
rts
; ===========================================================================

loc_13582:
subq.w #1,$3E(a0)
rts
; End of function Sonic_SlopeRepel
</div>