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Question by saif301299 · Jan 18, 2022 at 02:06 AM · unity 2dphysics2daddtorqueprototype

How can i add constant rotation speed on 2d object?

Hi all, I m making prototype of famous game knife Hit. Here i stuck. For rotation of wood(knife Target) i am using Rgidbody2d.AddTorque(rotationSpeed) in Fixed Update. but wood (Knifehit target) Rotate at super speed. how can i roate wood log at some constant speed?

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Answer by rh_galaxy · May 07, 2022 at 09:42 AM

If you have no Angular Drag on the RigidBody2D you need just do AddTorque() once (but with a smaller value than you are doing now) to achieve constant rotation speed. If Angular Drag is >0 you need to keep doing AddTorque() in FixedUpdate() but with a very small constant value, and Drag and Torque will eventually reach a constant top rotation speed. If you instantly want to rotate at constant speed, you set rb.rotation each FixedUpdate() to the same small value regardless of Angular Drag.

Your question is too imprecise to give any more specific answer.

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avatar image saif301299 · May 08, 2022 at 05:21 AM 0
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Well I need rotation that can rotate the log at some constant speed. I want to keep things simple. You answer perfect man, but it is ok to use Rigidbody2D.angularVelocity? It just curiosity that's why I asked . Also I read in documentation that angularVelocity case some behavior problems...

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