How to make a raycast deviate randomly

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#1

im trying to make my gun system have random spread
i tried to use random.new():NextNumber() but i couldn’t figure it out
code in a server script
targetlocation is the mouse location
i used to just add the spread value to the targetlocation but that makes it the same at all ranges which is not what i want

	local RayDirection = (TargetLocation  - Handles.Position) * raynge
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#2

Hi, try this:

local Random = Random.new()

local spreadAngle = math.rad(spreadValue)
local randomSpreadAngle = Random:NextNumber() * 2 * math.pi
local spreadVector = Vector3.new(math.sin(randomSpreadAngle) * spreadAngle, 0, math.cos(randomSpreadAngle) * spreadAngle)
local rayDirection = (TargetLocation - Handles.Position).Unit + spreadVector
rayDirection = rayDirection.Unit
local finalDirection = rayDirection * raynge
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#3

the system i use makes a part the length of the raycast but setting its cframe to finalDirection wont work

	local Beam = Instance.new("Part", workspace)
	Beam.BrickColor = BrickColor.new("New Yeller")
	Beam.FormFactor = "Custom"
	Beam.Transparency = 0
	Beam.Material = "Neon"
	Beam.Anchored = true
	Beam.CanCollide = false


	-- Math.
	local Distance = (Handles.Position - TargetLocation).magnitude
	Beam.Size = Vector3.new(0.075, 0.075, Distance)
	Beam.CFrame = CFrame.new(Handles.Position, TargetLocation) * CFrame.new(0, 0, -Distance/2)

	game.Debris:AddItem(Beam, 0.05)
#4

I got back to testing and I believe this does not work

#5

Hi, after some more rigorous testing, i got this working, however, the vertical spread only kicks in when aiming above or below the starting position. how can i make it always spread vertically?

#6

tbh i dont remember, but try this

local Beam = Instance.new("Part", workspace)
Beam.BrickColor = BrickColor.new("New Yeller")
Beam.FormFactor = "Custom"
Beam.Transparency = 0
Beam.Material = "Neon"
Beam.Anchored = true
Beam.CanCollide = false

local Handles = Vector3.new(0, 0, 0)
local TargetLocation = Vector3.new(10, 5, 10)

local Distance = (Handles - TargetLocation).magnitude

Beam.Size = Vector3.new(0.075, 0.075, Distance)

local Midpoint = (Handles + TargetLocation) / 2
local VerticalOffset = Vector3.new(0, Distance/2, 0)

Beam.CFrame = CFrame.new(Midpoint, TargetLocation) * CFrame.new(0, 0, -Distance/2) * CFrame.new(VerticalOffset)
Beam.CFrame = Beam.CFrame * CFrame.Angles(math.atan2(TargetLocation.Y - Handles.Y, (TargetLocation - Handles).magnitude), 0, 0)

game.Debris:AddItem(Beam, 0.05)
#7

thank you for replying, but i found a solution

	if sprad == nil then
		sprad = 0
	end
	local Random = Random.new()
	local Offset = Vector3.new(
		math.random(-sprad,sprad),
		math.random(-sprad,sprad),
		math.random(-sprad,sprad)
	)/100 * .25

	local spreadAngle = math.rad(sprad)
	local randomSpreadAngle = Random:NextNumber() * 2 * math.pi
	local spreadVector = Vector3.new(math.sin(randomSpreadAngle) * spreadAngle, 0, math.cos(randomSpreadAngle) * spreadAngle)
	local rayDirection = (TargetLocation - Handles.Position).Unit + Offset
	rayDirection = rayDirection.Unit
	local finalDirection = rayDirection * raynge
#8

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