[MKW TAS] GCN DK Mountain Backwards 1x Respawn

I complete a lap of the track GCN DK Mountain in the wrong direction using a single respawn. This is TAS. This improvement, alongside Kierio's backwards Koopa Cape demonstration, brings the total number of impossible backwards tracks in MKW from 2 to 0. Every track in the game can be driven a full lap backwards.

This run was created on Dolphin Lua Core with savestates, slowdown, frame advance, TAS code, and Info Display (created by SwareJonge). The video overlays were created by Stebler (bottom right) and Melg (left).

This video is an improvement on the previous strat which doesn't complete the track backwards. Since then, we figured out that we could complete the track backwards. Pretty simple really.

A couple of months ago, xnik demonstrated that it was possible to go over the invisible wall on DK Mountain (   • [MKW TAS] Clearing the GCN DK Mountain Inv...  ). The way they did this was by getting stuck in the final ramp on the downhill section of the track, somehow causing the vehicle to pick up momentum (but not speed) in the -Y direction. He then performs a hop and a bonk against the ramp collision to perform a External Velocity transfer from the Y vector to the X and Z vectors. We've coined this specific example of rigid body physics "velocity stacking" since it sounds cooler and stuff. So, in making this run, I went about the same method with the intent of driving the track backwards.

After getting lodged into the ground, I build up about 5900 -Y external velocity, and with reversing, I was able to get this speed up to about 6400. Then, as I turn to prepare for the speed transfer, my speed drops by around 1000 from turning the vehicle, ultimately leading to the remaining ~5300 -Y external velocity being transferred to the other vectors. This means that, while my actual speed can't exceed 120kmh in any direction, the game will keep pushing me along at 120 XYZ speed as the forces dictating my movement are so much higher than my actual speed. I take advantage of this by driving all the way up the volcano and using the sloped ground to repeatedly rotate the vehicle in midair. This bizarre movement leaves me with enough positive Y external velocity to completely surpass the invisible wall reaching ~64000 units into the air. Simultaneously, this also allows me to hit checkpoint 23, setting my respawn position to region 1, placing me right in front of the cannon.

To summarize, here are the statistics GCN DK Mountain has to offer:
did it :)

Music: Gran Turismo 4 License Music (Remix) - j0hnnys1nz (   • Gran Turismo 4 - License Music (Remix)  )
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