Uploaded November 2021 | Updated September 2026, 2 weeks ago
This video discusses how we reverse-engineered the flight physics to run frame-by-frame simulations, as well as how we made use of a genetic algorithm to achieve optimal plane flight input sequences.
View the code used for this project here: github.com/malleoz/ttydPlaneSim
Jdaster's TTYD Utils repository: github.com/jdaster64/ttyd-utils
TwoMinutePaper's video: youtube.com/watch?v=Lu56xVlZ40M
The Open AI Paper: openai.com/blog/emergent-tool-use
Special Thanks to:
mmtrebuchet - Discord: mmtrebuchet 7937
Monado - twitter.com/Monado_ and twitch.tv/monado
Sjorec - twitter.com/SjorecSRL and twitch.tv/sjorec
Sway - twitter.com/Sway_NC and twitch.tv/swaync
Muz - twitter.com/MuzYoshi and twitch.tv/muzyoshi
Interested in TTYD speedrunning? Join the community Discord here: discordapp.com/invite/YB23azC
_____________________________
Twitter: twitter.com/tasmalleo
Twitch: twitch.tv/tasmalleo
Join my Discord! discord.gg/VRk59mY
Intro/Outro by TheSneakySpy: twitter.com/TheSneakySpy and youtube.com/TheSneakySpy
Check out Mario Kart Wii TASes: mkwtas.com
This video discusses how we reverse-engineered the flight physics to run frame-by-frame simulations, as well as how we made use of a genetic algorithm to achieve optimal plane flight input sequences.
View the code used for this project here: github.com/malleoz/ttydPlaneSim
Jdaster's TTYD Utils repository: github.com/jdaster64/ttyd-utils
TwoMinutePaper's video: youtube.com/watch?v=Lu56xVlZ40M
The Open AI Paper: openai.com/blog/emergent-tool-use
Special Thanks to:
mmtrebuchet - Discord: mmtrebuchet 7937
Monado - twitter.com/Monado_ and twitch.tv/monado
Sjorec - twitter.com/SjorecSRL and twitch.tv/sjorec
Sway - twitter.com/Sway_NC and twitch.tv/swaync
Muz - twitter.com/MuzYoshi and twitch.tv/muzyoshi
Interested in TTYD speedrunning? Join the community Discord here: discordapp.com/invite/YB23azC
_____________________________
Twitter: twitter.com/tasmalleo
Twitch: twitch.tv/tasmalleo
Join my Discord! discord.gg/VRk59mY
Intro/Outro by TheSneakySpy: twitter.com/TheSneakySpy and youtube.com/TheSneakySpy
Check out Mario Kart Wii TASes: mkwtas.com
![[MKW TAS] DS Yoshi Falls Lap 1 - 19466 by Malleo](https://i.ytimg.com/vi/z48PiSZfXlI/mqdefault.jpg "[MKW TAS] DS Yoshi Falls Lap 1 - 19466 by Malleo
Lol, I purposely tried to pretty much tie with Guillaumes time. But note, this actually is faster because I hop before reaching the finish line. Without hopping, the lap is .42 mainly coming from the new beginning strat. Ill end up redoing the entire lap, but what main parts should I improve?")
![Sonic Heroes (TAS) - Seaside Hill (Team Sonic) in 1:23.44 {WR} [16:9]](https://i.ytimg.com/vi/zzI2q_JelrM/mqdefault.jpg "Sonic Heroes (TAS) - Seaside Hill (Team Sonic) in 1:23.44 {WR} [16:9]
This is a Tool Assisted Speedrun (TAS). For more info, please visit http://tasvideos.org
Watch in HD if you can, it looks a lot better! (Thanks Sewer56 for the encode!)
If you prefer to watch a 4:3 encode , its available on Taless channel:
https://www.youtube.com/watch?v=4Ke8057vJF8
Authors: Tales (THC98) and Malleo
Taless Youtube channel:
https://www.youtube.com/user/THC98
A while ago I told Tales that I was interested in TASing this game, and that motivated Tales to start the TAS over with me! So this is where we are right now. So many improvements!
Special thanks to Gamepro011, CriticalCyd, Deku, JustLemres, FusionVaria, and Sewer56 for all their help during the creation of this TAS.
Most of improvements came from abusing level geometry while doing triangle dives to skip several sections of the stage. That also allowed us to also skip the trigger of the first bobsled section by going over it, which saved us quite a lot of time.
Aside from that, we also implemented an object clip in the last pair of blocks before the cannon, which means that we didn’t need to switch to Knuckles and break those blocks.
Another cool trick we found while making this TAS is skipping the “entering the cannon” animation by doing a thundershoot + flight accel as Tails in a very precise position below the cannon. This alone saves a whole second over entering the cannon normally!
And finally, there were improvements due to minor movement changes. One example of this is the ascending pillars section, where we landed on the left higher part of the first pillar as Tails, and thus we could land on the second pillar by doing a triangle dive as Knuckles, avoiding the extra Tails flight.
Tricks used in this level:
Kick acceleration: You can press and release B to kick with Sonic, which is normally followed by a cooldown that prevents you from kicking again for a certain time. This cooldown can be circumvented by switching to Tails and then back to Sonic, allowing us to repeatedly kick over and over again. This allows us to build up speed a lot faster than normal.
Triangle dive: Going into a triangle dive with Knuckles while in high speed allows us to maintain our speed longer than just jumping with a character. This allows us to clear wide gaps.
Abusing level geometry: Throughout Seaside Hill, many vertical walls aren’t actually flat. By jumping against these walls at a certain angle, we can redirect a lot of our forward momentum into vertical momentum, allowing to scale walls a lot faster than normal.
Light dash cancel: By switching formations right after doing a light dash (when you press B with Sonic to lock onto a set of rings), you will instantly jump to a speed value of 15.9. In situations where we have a lower speed value, this can be used to instantly increase in speed.
Loop speed: By doing a homing attack while Sonic is above a scripted section (such as a loop), the game pulls Sonic down back to the loop with increasing speed. If this is activated while not directly above the loop section (by running off the loop while still maintaining its scripted effect), the game will indefinitely increase Sonic’s downward speed, until the homing attack is over. Furthermore, it’s possible to manipulate Sonic’s gravity direction (X and Z rotations) so his “downward vector” is pointed towards an arbitrary direction, which will also be the speed gain direction.
Object clipping: With a high enough speed value, you can switch to Tails right before coming into contact with a door or obstacle, allowing you to go through it. This is used right before we reach the cannon to avoid having to break the two blocks that are in our way.
Game version: NTSC-U in Game Cube
Emulator: Dolphin 5.0 stable
Rerecords: 5958 (As we branched out from multiple .dtm files, this count is likely not very accurate. Id estimate around 10k for this stage alone.)
Former TAS WR: 1:37.81 by THC98
https://www.youtube.com/watch?v=YLE4kuKPBsI
Real time WR (non-PC): 2:31.78 by Sonicspeedruner
https://www.youtube.com/watch?v=la9NXs5phNY
Real time WR (PC): 1:59.49 by Deku
https://www.youtube.com/watch?v=P8LP5rz4dvc
Enjoy! :)")
