Difference between revisions of "Fix the EHZ Deformation bug"
From Sonic Retro
Scarred Sun (talk | contribs) m (Text replace - '[[Category:SCHG How-tos|' to '{{S2Howtos}} [[Category:SCHG How-tos|') |
Scarred Sun (talk | contribs) m (Text replacement - "</asm>" to "</syntaxhighlight>") |
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Line 21: | Line 21: | ||
dbf d1,- | dbf d1,- | ||
− | rts</ | + | rts</syntaxhighlight> |
Copy and paste this code twice into it: | Copy and paste this code twice into it: | ||
<asm> move.w d4,(a1)+ | <asm> move.w d4,(a1)+ | ||
− | move.w d3,(a1)+</ | + | move.w d3,(a1)+</syntaxhighlight> |
In the end it should look like this: | In the end it should look like this: | ||
<asm> move.w #($B4)/12-1,d1 ; $B4 bytes | <asm> move.w #($B4)/12-1,d1 ; $B4 bytes | ||
Line 44: | Line 44: | ||
move.w d3,(a1)+ | move.w d3,(a1)+ | ||
− | rts</ | + | rts</syntaxhighlight> |
And that's it! Now it should look fixed: | And that's it! Now it should look fixed: |
Revision as of 21:30, 20 December 2015
(Original guide by qiuu)
In Sonic 2 is in EHZ a small deformation bug, the lowest two layers don't scroll as they are not affected by the deformation code:
To fix this, go to SwScrl_EHZ:. Scroll down until you see SwScrl_RippleData:. Above it you should have this piece of code:
<asm> move.w #($B4)/12-1,d1 ; $B4 bytes
- move.w d4,(a1)+
move.w d3,(a1)+
move.w d4,(a1)+
move.w d3,(a1)+
move.w d4,(a1)+
move.w d3,(a1)+
swap d3
add.l d0,d3
add.l d0,d3
add.l d0,d3
swap d3
dbf d1,-
rts</syntaxhighlight> Copy and paste this code twice into it: <asm> move.w d4,(a1)+ move.w d3,(a1)+</syntaxhighlight> In the end it should look like this: <asm> move.w #($B4)/12-1,d1 ; $B4 bytes - move.w d4,(a1)+ move.w d3,(a1)+ move.w d4,(a1)+ move.w d3,(a1)+ move.w d4,(a1)+ move.w d3,(a1)+ swap d3 add.l d0,d3 add.l d0,d3 add.l d0,d3 swap d3 dbf d1,- move.w d4,(a1)+ move.w d3,(a1)+ move.w d4,(a1)+ move.w d3,(a1)+
rts</syntaxhighlight>
And that's it! Now it should look fixed: