An interesting project
I'll be as brief as possible in this, still hoping you read this because the game has a few main design flaws that seem to have corrupted it.
- When trying to implement momentum, you must not be hitting any of the movement keys and your character will not warp.
- Momentum works in every direction. Running fast in an horizontal plane still carries dynamic energy, which could've been used. Falling in high speed still carries a lot of propulsion from G forces, thus, it sounds like it would be a lot of fun to see some levels that allow you to use this feature.
Finally, I might add that in physics, the instance that carries the most momentum is when your feet have just elevated above the ground, not when you're at the highest point in the jump.
Please, do keep making games like this one, I really enjoy seeing puzzle games based on Portal-ish concepts like this one.
B-