x


Why does inside unit circle use the world point?

Hello. I would like to try out spawing enemies with Random.insideUnitCircle

 var newPosition  = Random.insideUnitCircle * spawnSizeArea;
 yield WaitForSeconds(Random.Range(5,12));
 Instantiate(curSpawn, newPosition, transform.rotation);

but this is seemingly using the world point instead of the radius around the gameobject I attached this script to. How do I undo that? Thank you!

more ▼

asked Jun 21, 2011 at 05:03 AM

avatar image

superventure
770 160 137 175

(comments are locked)
10|3000 characters needed characters left

2 answers: sort voted first

Random.insideUnitCrcle returns a Vector2. You should convert it to Vector3 and translate to the game object position:

   var xz = Random.insideUnitCircle * spawnSizeArea;
   var newPosition = Vector3(xz.x,0,xz.y)+transform.position;
   Instantiate(curSpawn, newPosition, ...
more ▼

answered Jun 21, 2011 at 05:24 AM

avatar image

aldonaletto
60.5k 49 187 345

You sir, are an angel. Me thanks!

Jun 21, 2011 at 05:30 AM superventure

Oops! I wrote xz.z, but the it should be xz.y! Edited the answer...

Jun 21, 2011 at 05:46 AM aldonaletto
(comments are locked)
10|3000 characters needed characters left

Random.insideUnitCircle returns a Vector2. When a Vector2 is implicitly converted to a Vector3, the z-component is set to 0. For example, let's assume that spawnSizeArea = 5 and Random.insideUnitCircle returns Vector2(0, 1). When you try to use that as the spawn position of your new instance, it'll spawn at the point (0, 1, 0).

Now, if your problem is that it's not spawning the instance at a local point relative to your game object, well, it's not supposed to. If you want to do that, you have to manually convert the point to local space coordinates by using InverseTransformDirection or InverseTransformPoint (whichever works for your purposes).

more ▼

answered Jun 21, 2011 at 05:17 AM

avatar image

Dreamblur
760 33 34 46

(comments are locked)
10|3000 characters needed characters left
Your answer
toggle preview:

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Topics:

x3374
x1189
x913
x138
x88

asked: Jun 21, 2011 at 05:03 AM

Seen: 2874 times

Last Updated: Jun 21, 2011 at 05:46 AM