Raycasting only works very close to the hitpart

Help and Feedback Scripting Support
#1

My raycasting only works when its super close to the hitpart

[demo - YouTube](my video)

I have been looking for so long and I cant find anyone else who has the same problem

my script:

local tool = script.Parent
local remote = tool:WaitForChild("OnShot")

local debris = game:GetService("Debris")

local TweenService = game:GetService("TweenService")

local function CreateBeam(origin, direction)
	local midpoint = origin + direction/2 

	local part = Instance.new("Part")
	part.Parent = workspace
	part.Anchored = true 
	part.CanCollide = false 

	part.Material = Enum.Material.Neon
	part.BrickColor = BrickColor.new("Really red")

	part.CFrame = CFrame.new(midpoint, origin)
	part.Size = Vector3.new(.5, .5, direction.magnitude)

	debris:AddItem(part, 1)
end

remote.OnServerEvent:Connect(function(player, mousePos, originPos)
	
	local direction = (mousePos - originPos).Unit * 300000000000

	local result = workspace:Raycast(originPos, direction)

	if result then 
		local character = result.Instance.Parent 
		local humanoid = character:FindFirstChild("Humanoid")

		if humanoid and humanoid ~= player.Character.Humanoid then 
			humanoid.Health -= 5
		end

	end

	CreateBeam(originPos, direction)
end)
#2

Why do you multiply it by so much? Has it always been 300000000000? Maybe the huge integer is the issue.

#3

it didn’t work with 3000, nothing works

#4

Hmm, try adding this raycast visualizer to your code:

-- for more info on these, check out:
-- https://developer.roblox.com/en-us/api-reference/function/WorldRoot/Raycast
-- https://developer.roblox.com/en-us/api-reference/datatype/RaycastParams
local result = workspace:Raycast(origin, direction, params)

if result then
    local distance = (origin - result.Position).Magnitude
    local p = Instance.new("Part")
    p.Anchored = true
    p.CanCollide = false
    p.Size = Vector3.new(0.1, 0.1, distance)
    p.CFrame = CFrame.lookAt(origin, position)*CFrame.new(0, 0, -distance/2)
end

I’m not super good with raycasts but using this visualizer you should be able to see what’s going on, maybe this will provide clarity to your issue.

1 Like
#5

that still doesnt work, it just shows it going slightly ahead of the gun

#6

There is most likely an issue with the raycast running into an unfiltered-out object in between the origin and destination positions, which could be objects directly near the origin. Use the RaycastParams to apply a table that contains the player’s character (if the origin is a tool that the player is holding) and anything else that you need the raycast to ignore.

#7

good pont I dont think I have params

#8

i’m having the same issue. I’ve already put raycast parameters to filter the character but it’s still not working. Did putting parameters fix it for you?

#9

nope, it did not lol (sorry character limit) it didn’;t work

#10

make integer of the multiplication smaller due to if roblox goes to too big numbers it goes negative

#11

i got my script working on accident and i really can’t find the reason. Here’s the code i used though:

local ray1 = char.HumanoidRootPart.Position
local ray2 = char.HumanoidRootPart.CFrame.LookVector * 180
local raycastParams = RaycastParams.new()
raycastParams.FilterDescendantsInstances = {char:GetDescendants()}
raycastParams.FilterType = Enum.RaycastFilterType.Blacklist
local rayResult = workspace:Raycast(ray1, ray2, raycastParams)