Putting instantiate inside a variable

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Hello everyone :)

I was just wondering today when i was working with unity, why use a variable when instantiating something? what is the benefit of:

var instance : GameObject = Instantiate(thePrefab, transform.position, transform.rotation);

from just doing

 Instantiate(thePrefab,transform.position,transform.rotation);

Answer 1

Answer by tanoshimi · Nov 04, 2013 at 04:15 PM

Because you might need to access your newly-created instance immediately after, e.g. to set some property:

 var instance : GameObject = Instantiate(thePrefab, transform.position, transform.rotation);
 instance.renderer.enabled = false;

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Answer 2

Answer by aldonaletto · Nov 04, 2013 at 04:30 PM

You must assign the result of Instantiate to a variable when you want to do something else with the newly created object - child it to another object, apply a force to it, etc. If you're creating a rocket, for instance, you must accelerate the object towards the target - the code would be something like this:

  var bullet: GameObject = Instantiate(bulletPrefab, ...);
  bullet.rigidbody.AddForce(bullet.transform.forward * shootingForce);

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Owen-Reynolds · Nov 04, 2013 at 05:26 PM 0

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...and see the docs for the full rocket example: http://docs.unity3d.com/Documentation/Manual/InstantiatingPrefabs.html about 1/2-way down.

Putting instantiate inside a variable

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