Closed GoogleCodeExporter closed 9 years ago
[deleted comment]
I have no problem doing the repeated spindash (tried against aquatic ruin
boss), it works as expected as long as you get the timing right (hold down,
hold C, release C, etc), using either wiimote or genesis controller with
wiimote adapter, so unless you are speaking about a different thing, the
problem is probably with the controller you are using, not the emulator.
Original comment by ekeeke31@gmail.com
on 10 Mar 2012 at 2:45
This video I just made using Genesis-Next (a port of Genesis Plus GX for
libsnes) clearly demonstrates the bug. Notice how I can do the spindash
whenever I want and I know how to do it. It's not hard at all. If I try to do
it repeatedly without moving, it fails, but in the end, you see me move after
each spindash and the next spindash works. This happened exactly how I
expected it to happen, with knowledge of the bug. It's not a controller timing
issue, since it's super easy to do.
You can play the video with MPC-HC and LAV Filters or just VLC 2.0.
http://dl.dropbox.com/u/35695760/sonic2bug-encoded.mkv
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 5:02
Hmm! The problem happens in Gens 2.14 also. Maybe it's the ROM. :O You can
close this issue.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 5:21
I tried a different ROM and I still see this behavior. I know it doesn't do
this on the real system. Maybe this only happens on certain models of
Genesis/Mega Drive, but not on the model I have or the model that guy in the
SDA speed run has.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 5:40
http://info.sonicretro.org/SCHG_How-to:Fix_screen_boundary_spindash_bug
It seems this is the bug I'm seeing.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 5:49
I see, it's a bug in the original game indeed.
When i tried the trick, i was on the left pillar but not completely stuck to
the edge of the screen. As i said earlier, repeated spindash (as with only
using DOWN and C buttons with good timing) worked perfectly, and exactly as in
your initial video (Sonic comes back to its initial position after
spindash,even when boss is moving to the middle of the two pillars...)
Original comment by ekeeke31@gmail.com
on 10 Mar 2012 at 10:02
There's no "good timing" necessary. It simply works the first time or it
doesn't once you've come back and not moved anywhere since then. What's done
in the SDA marathon video can't be done on this ROM with these emulators. I
can do it just fine on my Genesis with my real copy of Sonic 2. It may not be
an emulation error, but it's definitely not something that you can do here,
unless you have a different ROM in which the bug is fixed (which is what I
suspect is the case with the Sonic 2 cart I own).
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 10:09
If I could dump my cart somehow, I could test this better. I don't have a ROM
dumping tool though.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 10:10
I have tried with both revisions in no-intro romset and what is done in the
video can be done in both.
I am not sure if the position is *EXACTLY* the same but it works and the boss
was quickly defeated without moving from my initial position on the pillar.
Original comment by ekeeke31@gmail.com
on 10 Mar 2012 at 10:19
Also, it could be that the speedrun was done with a flashcart and a fixed ROM
but what is sure is that sonic retro clearly shows it is a bug in the game
code, not an emulator bug.
Original comment by ekeeke31@gmail.com
on 10 Mar 2012 at 10:23
My cart was bought back when I was a kid, and definitely isn't a flash cart
with a fixed ROM.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 10:25
Ohhhh! It only works from the left! Here's it working properly:
http://dl.dropbox.com/u/35695760/sonic2bug-part2-encoded.mkv
I must have always naturally done it from the left as a kid, and when I came
back to playing it as an adult, I naturally tried from the right for some crazy
psychological reason. I'm sorry for bothering you with all this! It's
definitely my mistake, especially for not noticing he was doing it from the
left in the SDA marathon video.
I can't apologize enough for wasting your time. I hope at least you get some
entertainment out of this. Lol.
Original comment by lexlexlex@gmail.com
on 10 Mar 2012 at 10:52
No problem. I hate playing sonic 2 but it's always fun to learn new things
about mega drive games.
Original comment by ekeeke31@gmail.com
on 10 Mar 2012 at 10:56
Original issue reported on code.google.com by
lexlexlex@gmail.com
on 9 Mar 2012 at 3:36