Unity 2D: lock axis

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Is there a way to lock the object in the x-axis in Unity 4.3 2D?
I have a 2D sprite with a rigidbody2D attached to it.

2 Answers

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You can constrain which axis it can’t move in, in the rigid body.

But that's not for 2D. I checked the documentation, but I don't think that exists in rigidbody2D. :/ Thanks though :>

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Yeah, I don't see anything like that for 2d. You could set the position every frame: void Update() { Vector3 position = transform.position; position.x = 0; transform.position = position; }

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That worked! Thank you so much!

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To be honest, this is suboptimal as the position can be changed inside the frame and thus can cause glitches when its set back to the original position. The only thing i found to be working is "set kinematic" to prevent the object from recieving forces by other objects. This though prevents collision detection

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I know this is an old question, but Google didn’t reveal the right answer anywhere.

For RigidBody2D you can constrain in one axis by attaching a SliderJoint2D