This TAS shows the fastest speedrun of this game currently existing and beats the non-TAS world record by more than 30 seconds (Sept. 2017). This is the first any% TAS of the game. It utilizes all known time saving glitches known to me (Sleeping Egg Zone glitch and 3x Special Stage glitch). The inputs are mostly frame perfect. The game is completed with Sonic as character in just a bit over 11 minutes (11:02.45) starting from the character select until the final boss jumps on the platform and starts smiling (speedrun.com rules for the game).
Other comments
The boss glitch in SEZ3 and the special stage glitches in SEZ2, APZ1 and APZ2 are noteworthy. Also the MGZ3 boss is hit will being in hit stun. I described the glitches in more details (partially in videos) here: https://www.speedrun.com/Sonic_Chaos/forum
This is the first TAS, I have done. It took me between 3 to 5 hours. It is noteworthy, that the game's visuals have a lag of roughly 3-4 frames and when running with 60fps (NTSC). The game is plaqued with lags, which are eating inputs and appear pseudo-randomly. This made it impossible for me to redo any stages, since "cutting out input frames" would make frame lags in the later game appear differently and therefore corrupt the rest of the recording.
The strategies used for the run are mostly known. The inputs are for the most part frame perfect.
The TAS is not perfect, in that the time can still be optimized marginally. I strongly believe, that a sub 11 minute time is possible, but (if no other glitches surface) only by a few seconds.
fsvgm777: Replaced movie file with one that removes about 8 seconds of blank input at the end.
Noxxa: As has been discussed in the submission topic, the quality of this run is a bit spotty. Comparing to the published best ending TAS (in levels that have identical and comparable goals), this movie has a few improved strategies and saves time in some levels, but in other levels it unnecessarily loses time. Even if it's a different category, a new submission is expected not to lose time to existing runs in comparable areas. For that reason, I'm rejecting this run.
It is most certainly a decent run for a first try, but it just needs a second pass, with that extra bit of polish.
Hello icy and welcome to TAS Videos, maybe this submission got rejected for this reasons: you say "the TAS is not perfect", TASes are oriented on perfect super plays and inhuman skills.
Very weak rerecord count: I think 64 RR, is not enought to optimize a game, specially a sonic game. I recomend you more research, optimization and test more about the game after start a serious TAS, you can post your wips in this thread and search for feedback and maybe people can answers your questions.
If you think sub 11 is possible just do it, optimize the TAS as much you can and maybe get acepted.
Good luck
Same as Evil_3D.
Also, I noted mistakes, so I strongly recommend to see the published run (and for comparision): [1504] SMS Sonic Chaos "best ending" by mike89 in 14:28.55
Because at lack of optimization (and no good ending), I vote no. Sorry.
My homepage
--Currently not much motived for TASing as before...--
But I'm still working.
Hi,
thanks for your feedback. If my submission ends up not beeing accepted, it's okay, but please let me address your points:
Very weak rerecord count: I think 64 RR
I don't see how the rerecord count is a metric of how good the quality of the TAS is. Maybe it is because my process was different from other TASers? I basically didn't rerecord anything, because I did all critical inputs on a frame-to-frame basis and used rewind/skip frame instead of loading states. As I wrote in the comments... this took me between 3 to 5 hours.
optimize the TAS as much you can
This is what I also addressed in my comments: I tried to do the best TAS possible, without checking any timings in between. After I finished the TAS, I realized that I couldn't redo any segments (even though I tried at least for 2 to 3 additional hours) because of the lag issues. If someone can explain to me how to get around these issues, I would be very glad! Otherwise, I wouldn't redo the complete run though (and more, because I would have to always additionally check that I didn't lost any frames in comparision to this TAS) to only save a single second, when this TAS _is_ the fastest known run by a far stretch.
Also, I noted mistakes
I said it myself, that my run isn't perfect, but I also don't think that anyone could optimize it by more than 5 seconds. When you say you noted mistakes, were there any crucial ones? Also note, that in order to trigger the special stage glitch, one has to loose frames/play imperfect in order to set it up (so maybe it is that)?
I strongly recommend to see the published run (and for comparision): [1504] SMS Sonic Chaos (Europe) "best ending" in 14:28.54 by mike89
I saw it before my submission and this run (no offense to mike89) is _far_ less optimized than mine. Just some examples from that run:
TQZ2: not going for the rocket boots is the worse strategy, because the rocket boots (even though you have to accelerate a couple of frames) gives you permanent max speed (7), while his route gives him an estimated avg. speed of 5 (so even with a conservative estimate he is 16,6% slower that route)
TQZ3: the execution on the boss is quiet bad (compare that to mine). The frames that could be saved on this boss alone in mike89's run is I believe 50% of the frame savings you could get in my entire run.
GZ1: After jumping over the big gap with the spikes, he misses the horizontal spring, which is a slowdown.
GZ3: The route to the boss is absolutely unoptimized. Here probably the other 50% of frame to be saved of my run are lost. (Compare that to mine)
(and no good ending)
You are aware, that good ending=100% run? I have problems understanding the feedback in that case. You are saying any% runs are uninteresting?
If my TAS doesn't end up being accepted I am fine with it, but if you are assuming it is not optimized and tell me to look at mike89's TAS for comparision, I ask you to take a closer look, as I believe the optimization of my run far surpasses that of mike89's even if the rerecord count would be zero.
PS: A quote from the 3rd best speed runner on this game in regards to my TAS (and I don't necessary agree... just take this into consideration if you critize the quality of the run):
From my understanding of the game, there isn't a single way to make this faster. 11:02 appears to be the absolute endgame.
I replaced the movie file with one that removes about 8 seconds of blank input at the end.
Anyway, barring the BIOS sequence (which can't be skipped), you don't skip the intro immediately and you wait a good second before selecting Sonic. Therefore, it seems more likely that you timed not from console power-on as we do, but from the moment you selected Sonic, which would more likely explain the 11:02.45 you're getting.
I saw it before my submission and this run (no offense to mike89) is _far_ less optimized than mine.
Well, mike89 did a good work at the time. Now improvements is possible. And since BizHawk has lag counter, probably lag reduction could be possible.
You are aware, that good ending=100% run? I have problems understanding the feedback in that case. You are saying any% runs are uninteresting?
If my TAS doesn't end up being accepted I am fine with it, but if you are assuming it is not optimized and tell me to look at mike89's TAS for comparision, I ask you to take a closer look, as I believe the optimization of my run far surpasses that of mike89's even if the rerecord count would be zero.
I'm not saying that any% runs are uninteresting. I found this game the only sonic game of SMS/GG that the special stages is really entertaining (Unlike the latter 2 sonic SMS/GG games), on my opinion (also, on the ending, instead of try again, you get a ''ending'').
EDIT: I'm a idiot. I forgot something about the both endings (SNES Aladdin and Gekisou Sentai Car Ranger). So, I'm sorry.
But this Any% run is actually interessing. And also I liked these new bugs.
I could try to take a better closer note, although I noted that some of the stages is 1 second in-game timer slower than the published run (maybe be more lag than Dega emulator?) and the glitch that enables you to ignore the running off the screen at the end of each act 3 wasn't used.
I don't see how the rerecord count is a metric of how good the quality of the TAS is. Maybe it is because my process was different from other TASers? I basically didn't rerecord anything, because I did all critical inputs on a frame-to-frame basis and used rewind/skip frame instead of loading states.
Rewind skip/frame? Never heard of this.
Also, checking the SEZ3 boss glitch on speedrun.com, I noted that you have a RAM Watch. I'd like to see if there are any more addresses I haven't found yet (such as boss health, for example).
My homepage
--Currently not much motived for TASing as before...--
But I'm still working.
Therefore, it seems more likely that you timed not from console power-on as we do, but from the moment you selected Sonic, which would more likely explain the 11:02.45 you're getting.
This is correct, as I explained in the comments of the submission. I failed to realize, that tasvideo.org uses the same timing method for all games. I tried to remove the unnecessary frames in the title and character select, but I it corrupts the rest of the TAS in the same way editing any level corrupts it :(
And since BizHawk has lag counter, probably lag reduction could be possible.
I am aware that BizHawk shows me lagging frames, but how can I go about reducing them? Do you have any pointers for me? Is this game specific? Sonic Chaos (NTSC) just happens to lag a lot...
I noted that some of the stages is 1 second in-game timer slower than the published run
I watched both videos (the relevant levels) side-by-side and have to admit, that calling it "_far_ less optimized" probably was a little bit exagerated. He has partially worse strategies, but does other things better. All in all he does some levels faster than me and I do some levels faster than him. Don't get distracted by the ingame time though, as a single frame (16ms) can make a whole second difference and 59 frames can be in the same 1-second-window. Ultimately I would say my run is still the faster one, since I execute the first three bosses better (on those bosses, I think I gain 3-5 seconds on mike89's run).
nd the glitch that enables you to ignore the running off the screen at the end of each act
I noted just now and didn't know about that glitch. I will research...
Rewind skip/frame? Never heard of this.
BizHawk -> Config -> Hotkeys... -> Frame Advance/Rewind (the first two options)
Also in the TAStudio tool of BizHawk you can select every single frame and jump to different frames.
The way my workflow was: I have rewind and frame advance on my shoulder buttons. If I want to record, I would hold frame advance (would make the game run at around 30 fps or so) and record stuff. If I needed frame perfect inputs or wanted to rerecord inputs, I would use the rewind shoulder button until I am on the right frame, push buttons and tap frame advance to advance single frames. While doing so, I had TAStudio open, which showed me which frame I was at, if there were frame lags, etc.... I had zero need for loading states and actually can't remember loading any states/branches at all (maybe I was trying stuff out in the beginning when I didn't establish a workflow yet).
I noted that you have a RAM Watch. I'd like to see if there are any more addresses I haven't found yet
Well, the whole RAM is filled with stuff... but the RAM watch in my videos is all I have + 12C2 contains a frame counter for the ingame timer, which is also relevant for the special stage glitch (I explained it on the speedrun.com forum as well)
Tested the rewind. It's very cool! You are good with this tool.
I am aware that BizHawk shows me lagging frames, but how can I go about reducing them? Do you have any pointers for me? Is this game specific? Sonic Chaos (NTSC) just happens to lag a lot...
The lag on NTSC caused me problems when I tried to TAS the sonic 2 sms. Lag is very random on this game (same as Sonic Chaos) isn't easy to reduce in this case. I assume that the engine is the same of sonic 2, I think [also the timer has the same problem. Quote from mike89: ''the timer in this game acts similarly to the one in Sonic 2 (carries over subseconds from previous levels) so that can add on up to an additional second.''].
Also, I finished the comparision:
The levels that you saved time were:
- The first 2 bosses and the 2nd phase of last boss.
- The new route of GZ3 and AP3 before of the boss.
- A bit of optimization on SEZ3 before of the boss.
Some of mistakes, for future possible improvements:
- Not including the levels that you get the special stage, there are some stages that you hasn't stopped to perform the peelout (that gets the top speed).
- It's possible to use the SEZ3 boss glitch + the glitch at the end of act 3 to save aproximately 150 frames or more.
My homepage
--Currently not much motived for TASing as before...--
But I'm still working.
Ah, thanks for doing a list of actual improvements Challenger. I was planning to look through myself, but got an early desync; I'll be sure to actually fix that knowing there are improvements.
It's a no vote fro me I'm afraid as from what little I did see from before the desync, just didn't look like a TAS. Very clear not controlling Sonic the first frame he could be on level one for a start.
However, I do hope you keep at it icy. From the sounds of things you sounded like you learned some things on the way on making this, and that another submission you make could make the grade.
Edit; Actually, I've rewatched this and completely take back what I said about this not looking like a TAS. Apparently the desync I mentioned had happened a lot earlier than I thought. Sorry for mistake icy.
Ah, thanks for doing a list of actual improvements Challenger. I was planning to look through myself, but got an early desync; I'll be sure to actually fix that knowing there are improvements.
Thanks!
Also I saved approximately 15-16 frames near the end of MGHZ2 (by jumping directly to the monitor instead of jumping after touches the monitor), but I haven't tested other levels or zones to find improvements because of those stupid lags.
http://tasvideos.org/userfiles/info/42146582768763142
My homepage
--Currently not much motived for TASing as before...--
But I'm still working.
