How to rotate a LookVector around origin?

[vlopste (Vercte)]

I need to know this so I can find how to raycast in a cone shape; is there a way I can do this?

Example:

[Prototrode (Vernumeron)]

May I ask what are you trying to do with a cone-shaped raycast? Perhaps you can just use a cone shaped part for a hitbox and use :GetPartsInPart instead?

[vlopste (Vercte)]

I’m trying to make a melee system that uses raycasts for hit detection. By cone-shaped, I mean this:

(red being the origin again)
And I’ll raycast multiple times to get the parts (players) in that general area.
I’m currently using a single ray, but I’m doing this so it doesn’t feel clunky.

[Prototrode (Vernumeron)]

Refer to my original suggestion of using spatial queries

To achieve what you want, check out this other thread:

Rotating a Vector in 3D Space

[BuilderBob25620 (BuilderBob)]

Rotating a vector

function rotateVectorAround( v, amount, axis ) return CFrame.fromAxisAngle(axis, amount):VectorToWorldSpace(v) end Example use:

Script

local VERTICAL = Vector3.new(0, 1, 0) local HORIZONTAL = Vector3.new(1, 0, 1) local rotateSpeed = 1 local followSpeed = 20 local bullet = script.Parent.Bullet local target = script.Parent.Target function rotateVectorAround( v, amount, axis ) return CFrame.fromAxisAngle(axis, amount):VectorToWorldSpace(v) end --Skip the first heartbeat because it's dt i…

[ElusiveEpix (Epix)]

If it’s just about the vector, you can get the direction in a 2D plane by using the sine and cosine functions. You give it an angle, and cosine and sine give you the X and Y coordinates respectively. Since the 2D vector formed by these two numbers is of length 1, you can use it as a direction.