Raycast stop at distance

Question

Hey!

I got a question..

I'm using raycasting for shooting with the mouse only problem is, that my raycast needs to stop at the mousepointer. The variable for that is "hit.point (Vector3)" or just "hit (RaycastHit)".

Let me explain:

alt text

for some reason:

 var direction = transform.TransformDirection (Vector3.forward) * 50000;
 var hit : RaycastHit;
 var ray2 : Ray = new Ray(transform.position,hit.point - transform.position);
 var Layermask = 1<<8;
 
 if (Physics.Raycast (ray2.origin, direction, hit, Layermask) ) {.....

so Physics.Raycast (Vector3,Vector3,float,layerMask) doesn't work, eventhough the reference sais:

 static function Raycast (origin : Vector3, direction : Vector3, distance : float = Mathf.Infinity, layerMask : int = kDefaultRaycastLayers) : bool

Please help me :)

Answer 1

Best Answer

Answer by themusicdork · May 26, 2011 at 09:50 AM

try using

Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition),hit,DISTANCE);

of course you would use however far you would like your ray to go for distance. So if you already have a distance (from another raycast? I dunno why you would need to do more than one) you would use this.

Vector3.distance(OBJECT.transform.position,hit.point)

OBJECT most likely being to object you are casting from so you can just use transform.position.

Good Luck TMD

Edit. The picture didn't load before. Try Plane.Raycast. Not sure about the arguments.

Add comment · Show 1 · Share

Arnout Swint · May 26, 2011 at 10:41 AM 0

Share

I tried Vector3.Distance, but it gives the distance of ray.origin ins$$anonymous$$d of transform.position. Unity can't seem to mix 2 hitpoints and raycasting.

Answer 2

Best Answer

Answer by Arnout Swint · May 27, 2011 at 10:05 AM

Got it!

I just made 2 scripts in which 1 calculates the hit.point and gave the distance to the ray2. Now my blue ray (or DVD, lawl) length is the distance between the mouse and the player.

But thanks everyone for thinking ;)

Add comment · Share

Answer 3

Answer by homeros · May 27, 2011 at 07:23 AM

Like said before in the comments you can try finding the closes point of two lines as they'll more likely to get close than to intersect. I've found this script on google search. Maybe it'll help you.

http://paulbourke.net/geometry/lineline3d/calclineline.cs

Add comment · Share

Raycast stop at distance

3 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions