How do I assign the velocity on the "y" axis to a float?

Questions & Answers
1

Hi there,
MEGA NOOB here (=

A really simple question but I just can’t seem to get it right.
I’m playing around with the animator, I’ve got a parameter “AboutToStop” and I’d like to set it to the velocity of the y axis (float vel) so I can change animation with transitions based on the velocity.

**Thanks in advance ! **

…

    Animator anim;					
	float vel;

	void Start()
	{
		anim = GetComponent<Animator> ();		
	}
	
	void Update()
	{
		vel = GetComponents<Rigidbody2D>().velocity.y;
		anim.SetFloat ("AboutToStop", vel);
	}

…

2

You need to use GetComponent instead of GetComponents like:

vel = GetComponent<Rigidbody2D>().velocity.y;

But since you should not use GetComponent every Update you can cache it as below:

 Rigidbody2D rigidbody2D;
 Animator anim;                    
 float vel;

 void Start()
 {
     rigidbody2D = GetComponent<Rigidbody2D>();
     anim = GetComponent<Animator> ();        
 }
 
 void Update()
 {
     vel = rigidbody2D.velocity.y;
     anim.SetFloat ("AboutToStop", vel);
 }