Raycast won't work

Help and Feedback Scripting Support
#1

Hello, so I’ve been trying to make a model to learn basic raycasting to help other people out, but the problem is it wouldn’t work. It keeps giving me an error.

image
image1008×52 27 KB

How can I fix this?
the script:

--This script was made by justen123568 for learning pourpses to raycasting
--//SERVICES
local Runservice = game:GetService("RunService")

--/MISC
local LASER_THICKNESS = .1

--The parts representing the start and end of our ray
local Originpart,TargetPart = script.Parent.RayOrigin,script.Parent.RayTarget
local laserPart = script.Parent.Laser

--This tells our raycast function what to ignore
local RayCastParameters = RaycastParams.new()
RayCastParameters.FilterDescendantsInstances = script.Parent:GetChildren()
RayCastParameters.FilterType = Enum.RaycastFilterType.Blacklist


local function CastRay()
	local origin = Originpart.CFrame.Position
	local target = TargetPart.CFrame.Position
	local direction = (target - origin)
	local results = workspace:Raycast(origin,direction,RayCastParameters)
	
	--Makes sure that if 'results' don't exist we still give it a table with a position value
	if not results then
		results = {Position = target}
	end

	local distance = (results.Position - origin).Magnitude


	laserPart.CFrame = CFrame.new(origin,target) * CFrame.new(0,0 -distance/2)

	laserPart.Size = Vector3.new(
		LASER_THICKNESS,
		LASER_THICKNESS,
		distance
	)
end
Runservice.Stepped:Connect(CastRay)
#2 
–This script was made by justen123568 for learning pourpses to raycasting
–//SERVICES
local Runservice = game:GetService(“RunService”)

–/MISC
local LASER_THICKNESS = .1

–The parts representing the start and end of our ray
local Originpart,TargetPart = script.Parent.RayOrigin,script.Parent.RayTarget
local laserPart = script.Parent.Laser

–This tells our raycast function what to ignore
local RayCastParameters = RaycastParams.new()
RayCastParameters.FilterDescendantsInstances = script.Parent:GetChildren()
RayCastParameters.FilterType = Enum.RaycastFilterType.Blacklist

local function CastRay()
local origin = Originpart.CFrame.Position
local target = TargetPart.CFrame.Position
local direction = (target - origin)
local results = workspace:Raycast(origin,direction,RayCastParameters)

--Makes sure that if 'results' don't exist we still give it a table with a position value
if not results then
	results = {Position = target}
end

local distance = (results.Position - origin).Magnitude


laserPart.CFrame = CFrame.new(origin,target) * CFrame.new(0,0 -distance/2)

laserPart.Size = Vector3.new(
	LASER_THICKNESS,
	LASER_THICKNESS,
	distance
)
end
Runservice.Stepped:Connect(CastRay)

Your direction variable needs to be the Unit of target - origin
You can use
local direction = (TargetPart.Position - OriginPart.Position).Unit

#3

it wouldn’t work it keeps giving me the same error?

#4

What is the error your getting

#5

image
image1015×55 25.8 KB

#6

try putting a comma between the 0 and -distance line

CFrame.new(0,0 ,-distance/2)
1 Like
#7

Oh yeah, thanks, this was very helpful, but also your script kept inverting it, so I used my original one and it worked. Thanks, I appreciate your time and effort. :+1:

1 Like
#8