Scripting Support | Lazer Resize

Help and Feedback Scripting Support
#1

Hi! I’m trying to make a laser (part) that resizes when something goes in-between the laser, so it cuts off. I’ve tried using beams and trails but they don’t work, nor do they function correctly. Please help!

Ex: Lazer is 50 studs long, something goes in-between it halfway, lazer would resize to 25 studs (or based on that parts sized whatever is convenient enough)

#2

Intro to Raycasting

#3

I had also attempted using raycasting. But when I did research on that I coundn’t figure out why it wouldnt work.

#4

Can you show the code you created that used raycasting?

#5

Sure. Give me a moment as I had deleted it before. (So ill have to remake it)

#6

You raycast from the source of the laser out in the direction, and it should return among other data the position of the first thing that blocks the laser.

#7

Could you show an example of this? (sorry, im new to raycasting as i started yesterday)

#8

RaycastExample.rbxl (23.4 KB)

Script from that place:

local params = RaycastParams.new()

local emitter = script.Parent.Emitter
local beam = script.Parent.Beam

local range = 100

params.FilterDescendantsInstances = {emitter, beam}
params.FilterType = Enum.RaycastFilterType.Blacklist

local function fire()
	local results = workspace:Raycast(emitter.Position, emitter.CFrame.LookVector * range, params)
	-- Analyze results
	if (results == nil) then
		print("The laser didn't hit anything.")
	else
		print("The laser hit a part:", results.Instance)
		print("Material of part:", results.Material)
		print("Normal vector:", results.Normal)
	end
	
	-- Beam
	local p = results and results.Position or (emitter.CFrame * CFrame.new(0, 0, -range)).Position
	beam.Size = Vector3.new(0.5, 0.5, (emitter.Position - p).Magnitude)
	beam.CFrame = CFrame.new((emitter.Position + p) / 2, p)
	for i = 0.5, 1, 0.1 do
		beam.Transparency = i
		wait()
	end
end

while (true) do
	wait(1)
	fire()
end
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