How can i block sideways movement?

Question

How can i block sideways movement when the player hits a cube? I need only to move on z and x axis. alt text

Answer 1

Answer by Dray · Nov 03, 2015 at 08:55 PM

Intuitively I'd say just take the value that defines your movement before it get's applied to your GameObject and just "cut" off the value of the axis you want to block. Be it the smaller value, this is an example of what I mean:

 //where ever this comes from.. could be your rigidbodies velocity or something
 Vector2 velocity = new Vector2(2.0f, 1.0f);
 
 if (velocity.x > velocity.y) {
     velocity.y = 0;
 } else {
     velocity.x = 0;
 }

Put this in LateUpdate and you're good to go I think

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meat5000 ♦ · Nov 03, 2015 at 09:01 PM 0

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I was going to suggest something similar:

 void FixedUpdate ()
 {
     if(rb.velocity.x > rb.velocity.z)
     {
         rb.velocity = new Vector3(rb.velocity.x, 0.0f, 0.0f);
     }
     else if(rb.velocity.z > rb.velocity.x)
     {
         rb.velocity = new Vector3(0.0f, 0.0f, rb.velocity.z);
     }
     
     rb.velocity = new Vector3(rb.velocity.x, 0.0f, rb.velocity.z);
 }

But I dont think it'll really work.

1Crio · Nov 04, 2015 at 05:15 PM 0

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That worked` public Rigidbody rb;

 void OnCollisionEnter(Collision other)
 {
     if (rb.velocity.x > rb.velocity.z) 
     {
         rigidbody.constraints = RigidbodyConstraints.FreezePositionZ | 
                                 RigidbodyConstraints.FreezeRotationX | 
                                 RigidbodyConstraints.FreezeRotationY | 
                                 RigidbodyConstraints.FreezeRotationZ;
     }

     if (rb.velocity.z > rb.velocity.x) 
     {
         rigidbody.constraints = RigidbodyConstraints.FreezePositionX | 
                                 RigidbodyConstraints.FreezeRotationX | 
                                 RigidbodyConstraints.FreezeRotationY | 
                                 RigidbodyConstraints.FreezeRotationZ;
     }
 }`

How can i block sideways movement?

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