View source for Make the Slots Bonus Game Rotate Smoothly

{{GuideBy|Dullhole}}

In ''[[Sonic the Hedgehog 3 & Knuckles|Sonic 3 & Knuckles]]'', the Slots bonus game is mostly based on ''[[Sonic the Hedgehog (16-bit)|Sonic 1's]]'' [[Special Stage (Sonic the Hedgehog 16-bit)|Special Stages]]. As such, it ports many of the mechanics of those Special Stages, including the fact that it doesn't rotate very smoothly at all. This guide describes a way to make the Slots Bonus Game rotate more smoothly.

This tutorial assumes you are using the [[Disassemblies#Sonic_3_.26_Knuckles|''Sonic 3 & Knuckles'' GitHub disassembly]] and that you have basic knowledge on disassemblies.

==Making it smooth==
First, find '''Ending_4B356''', it should look like this:

<syntaxhighlight lang=asm>Ending_4B356:
		bsr.w	sub_4B4C4
		bsr.w	sub_4B592
		lea	($FFFF7800).l,a1
		move.b	(Stat_table).w,d0
		andi.b	#-4,d0
		jsr	(GetSineCosine).l
</syntaxhighlight>
and remove the  ''andi.b'' line, to make the stage itself rotate:
<syntaxhighlight lang=asm>Ending_4B356:
		bsr.w	sub_4B4C4
		bsr.w	sub_4B592
		lea	($FFFF7800).l,a1
		move.b	(Stat_table).w,d0
		jsr	(GetSineCosine).l
</syntaxhighlight>


Next find '''loc_4BF9A''':

<syntaxhighlight lang=asm>loc_4BF9A:
		move.b	(Stat_table).w,d0
		andi.b	#-4,d0
		jsr	(GetSineCosine).l
</syntaxhighlight>
and remove the  ''andi.b'' line there too, so that the slot machine at the middle of the level moves correctly:
<syntaxhighlight lang=asm>loc_4BF9A:
		move.b	(Stat_table).w,d0
		jsr	(GetSineCosine).l
</syntaxhighlight>


'''And that's it!''' Save and build and you should have a smoothly rotating Slots Bonus Game!

{{S3KHowtos}}