Help Newby lost, Trying to make a robe bridge

[josemendez]

I'm surprise to not see obi use to make bridge.

Bridges are usually built as a sequence of rigidbodies and joints. If you think about it, the ropes are pretty much always completely tensed up in between planks due too their own weight. In a bridge they never have a chance to bend, curl up, intersect themselves, each other or other geometry in the level: they're there just to support the planks. Since there's pretty much zero visible rope dynamics going on in a typical bridge, there's no benefit in using a rope simulation for this.

You can use ropes if you want very detailed dynamics (the bridge twisting on itself, planks detaching from one of the 2 ropes...) or if your bridge is destructible and you really want to see dangling ropes when the bridge is destroyed. But for typical bridges joints are simpler, faster to setup and don't require using a third party physics engine.