Is there a way to set angular velocity on an object without applying torque over time? I'm trying to do this:

1. Get the linear and angular velocities of my object.
2. Remove the object from the physics engine (clears its linear and angular velocities).
3. Muck around with it.
4. Return it to the physics engine.
5. Restore linear velocity (simple enough).
6. Restore angular velocity (no clue?)

I suppose I could take a linear velocity at the center and one at the surface, then use those to (later) apply a velocity at the surface, but that seems needlessly messy.

Thanks.

Yes, it is quite easy. Before you remove the object, record its velocity (use phent_getangvelocity). Then fire it up again:


phcon_setmotor(constraint2, vector(spinner_vel,100,0),nullvector,nullvector); //if this spinner is replacing one that went out of bounds, it should start moving like the old one

The second parameter is the important one. spinner_vel is the target angular velocity, and the next number, "100," is an amount of torque high enough for the oject to reach that target velocity within one frame (you might need to set this number higher depending on your situation). You can't set it too high, but if it is too low it won't start rotating at the target velocity.

Ah. So, I assume I need to do something like...

1. Record the first object's angular velocity.
2. Reset the first object's physics params.
3. Add a second object.
4. Add a constraint between the first and second.
5. Use phcon_setmotor() to start the first object spinning again.
6. Delete the second object.

Do I have that right?

More like this:

1. Record the entity's angular velocity
2. Dissable the physics
3. Do whatever to the entity
4. Re-enable the physics
5. use phcon_setmotor to get it rotating at the same speed it was before you dissabled it

You don't need a second object.

That's good to know. Thanks much!