Unity3d shotgun cone shoot

Question

I'm using raycasts as a shotgun. I randomize direction of each ray:

Vector3 direction = new Vector3 (UnityEngine.Random.Range (-splash, splash), UnityEngine.Random.Range (-splash, splash), 100);

Everything works fine, but that maximum "range" of this direction is rectangle and I want an ellipse. It's hard to explain: It's seems I should use normalization somewhere, but I don't know where.

http://stackoverflow.com/questions/5837572/generate-a-random-point-within-a-circle-uniformly — Tamas Hegedus, Sep 06 '15 at 12:47

score 2 · Accepted Answer · answered Sep 06 '15 at 16:24

2

Coordinates of points on circle can be calculated like this x = r*cos(a), y = r*sin(a). If r is random points will be inside of circle with radius of "splash";

Vector3 direction = new Vector3( Random.Range(-splash,splash)*Mathf.Cos(Random.Range(0,2*Mathf.PI)),Random.Range(-splash,splash)*Mathf.Sin(Random.Range(0,2*Mathf.PI)),0 );

answered Sep 06 '15 at 16:24

Peter G

155
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Thank you, I forgot about math :) – Konrad Linkowski Sep 06 '15 at 16:59
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Unity has a function called Random.insideUnitSphere there is also Random.insideUnitCircle. Not sure if that helps your case... http://docs.unity3d.com/ScriptReference/Random.html – Anthony Raimondo Sep 06 '15 at 18:25

Unity3d shotgun cone shoot

1 Answers1