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Question by robert_val1 · Apr 12, 2018 at 01:26 PM · performancevelocityjumpingif-statementsframerate drops

Drop in performance when checking velocity of rigidbody.,Performance drop when checking velocity of rigidbody.

if (GetComponent().velocity.y == 0) { transform.Translate(Input.GetAxis("Horizontal") Time.deltaTime speed, 0, Input.GetAxis("Vertical") Time.deltaTime speed); }

// When I use this in my jump script it makes my framerate inconsistent and jittery.

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Answer by sean244 · Apr 14, 2018 at 01:56 AM

You keep calling GetComponent and Input.GetAxis inside the update. You need to cache these. Also, since it's a physics operation, it should be in FixedUpdate.

 private Rigidbody2D _rb;
 private float speed;



 private void Start ()
 {
     _rb = GetComponent<Rigidbody2D>();
 }    


 private void FixedUpdate ()
 {
     float horizontal = Input.GetAxis("Horizontal");
     float vertical = Input.GetAxis("Vertical");

     if (_rb.velocity.y == 0f)
     {
         transform.Translate(horizontal * Time.fixedDeltaTime * speed, vertical * Time.fixedDeltaTime * speed, 0);
     }
 }
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