Algodoo

Interesting. What causes this to move forward instead of moving backwards or not at all?

Following Code in 3-4 segments:
vel(0) <= -0.05 ? {
vel = vel * [0, 1]
} : {}

I played with this for a while and believe I improved worm motion by doing the following:
1. Put one way velocity code in every third segment.
2. Set friction = 0.1 in every third segment.
3. Set all other segments friction = 0.0.
4. Added springs between the centers of all adjacent segments.
5. Set the spring length to 0 and the constant to 20.

I rated your scene highly because, after examining it extensively, I understand the thought and effort that went into making it. I will add a response scene because I just can't help myself. Hope you are OK with it.

Dear Sir, Thanks, I appriciate and welcome...