The way the sligs tail fits in to the middle of the pants allows the slig to move forwards and backwards a bit and activate switches.
Mostly, the pants are controlled by the momentum and leaning.
The pants themselves draw motion from a motor inside the pants. As the motor spins, it rotates cams which alternate the turning direction of the pin attatched to the leg. This makes the backwards and forwards motion of the leg.
When the leg is pulled back, a cord inside the leg pulls the shin part of the leg up towards the knee, this lowers that side, so that when it stretches back out again when it is all the way back, the bit the slig sits in is at he same level as it was in the middle.
When the leg is moved forwards, a pin is pushed forwards down the inside of the thigh, which pushes the joint in the knee forwards. This lifts the leg off the ground, alowing it to clear the ground as it moves forwards. When the leg reaches a certain distance, the pin is pulled back again, and tension allows the leg to strech back to how it was before, forcing the leg to "touchdown" onto the ground again.
In short, as the right leg goes forwards, it lifts up and moves, but as the left leg goes back, it stays on the ground so it can push the pants forwards.
In theory, this can't happen, because as the right leg lifts up to move forwards, it SHOULD fall to the right, but because there is so much momentum and because it happens too quickly, the pants only lean a bit while in transit.
PHEW! I think that answers your question!
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How do sligs legs work?
It could be those pipes
