Add roller top conveyor

[tiagocunico]

I think it would be nice to implement this types of conveyor.

This one is important to simulate the accumulation of the system.

These are important working on transfers

All images i got here

[ryevdokimov]

Thanks for the suggestion. Adding more types of parts like this is definitely on the road map.

[tiagocunico]

I was tinkering about, and discovered that in the RigidBody3D of the conveyor we can change the friction of the conveyor, I test and it works perfectly. I'm not sure the best way to implement, but if I could decide the friction for each conveyor or change like a combo box setting, and it changes the friction, would be amazing.

[ryevdokimov]

You can modify the RigidBody3D in instances of parts individually by enabling right clicking on the instance in your simulation scene and enabling "Editable Children"