Raycast not detecting humanoid

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1

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Im trying to make a raycast gun

  2. What is the issue? For some reason it doesn’t detect the humanoid

  3. What solutions have you tried so far? I tried looking on devforum, but I didn’t find anything

This is my first time trying to make a raycast gun, this is the script that handles the Raycast

local rs = game:GetService("ReplicatedStorage")
local Players = game:GetService("Players")
local WeaponShoot = rs.Events:WaitForChild("WeaponShoot")

WeaponShoot.OnServerEvent:Connect(function(plr, origin, direction, damage)
	print("Event Recived")
	local char = plr.Character

	local Params = RaycastParams.new()
	Params.FilterType = Enum.RaycastFilterType.Exclude
	Params.FilterDescendantsInstances = {char}
	
	local result = workspace:Raycast(origin, direction, Params)
	
	if result and result.Instance then
		print("Got Result And Instance")
		local hitCharacter = result.Instance:FindFirstAncestorWhichIsA("Model")
		if hitCharacter then
			print("Got Character")
			local hitHum = hitCharacter:FindFirstChild("Humanoid")
			if hitHum then
				print("Got Hum")
				hitHum:TakeDamage(damage)	
			end
		end
	end
	
end)

and this is the local script inside the tool that activates the WeaponShoot

local rs = game:GetService("ReplicatedStorage")
local Players = game:GetService("Players")
local WeaponShoot = rs.Events:WaitForChild("WeaponShoot")

local Mouse = Players.LocalPlayer:GetMouse()

local Tool = script.Parent
local StartPos = Tool:WaitForChild("ShootStart")

local Config = Tool.Configuration
local Damage = Config.Damage
local Delay = Config.Delay
local MaxAmmo = Config.MaxAmmo
local ReloadTime = Config.ReloadTime

Tool.Activated:Connect(function()
	WeaponShoot:FireServer(StartPos.Position, Mouse.Hit.Position, Damage.Value)
end)
2

with the direction you need to multiply it by how many studs u want the raycast to go. for example u can do direction * 100.

3

also add the gun in the FilterDescendantsInstances of the raycast.

4

Adding into this, Mouse.Hit.Position is not a directional Vector3 that faces where you clicked at. To get the directional vector that faces where you clicked at, you create a CFrame using CFrame.lookAt(at, lookAt). Basically, what this function does is create a CFrame that is positioned at at and it is facing towards the position lookAt.

Now, to get the directional vector, we simply index it with .LookVector

local directionVector = CFrame.lookAt(StartPos.Position, Mouse.Hit.Position).LookVector

Now we can replace the second argument with directionVector

WeaponShoot:FireServer(StartPos.Position, directionVector, Damage.Value)

Final script (local script):

local rs = game:GetService("ReplicatedStorage")
local Players = game:GetService("Players")
local WeaponShoot = rs.Events:WaitForChild("WeaponShoot")

local Mouse = Players.LocalPlayer:GetMouse()

local Tool = script.Parent
local StartPos = Tool:WaitForChild("ShootStart")

local Config = Tool.Configuration
local Damage = Config.Damage
local Delay = Config.Delay
local MaxAmmo = Config.MaxAmmo
local ReloadTime = Config.ReloadTime

Tool.Activated:Connect(function()
	local directionVector = CFrame.lookAt(StartPos.Position, Mouse.Hit.Position).LookVector
	
	WeaponShoot:FireServer(StartPos.Position, directionVector, Damage.Value)
end)
5

Try this I guess

local finalpos = (origin - direction).Unit * 100 -- 100 is example range

workspace:Raycast(origin, finalpos, Params)
6

Hmm, have you tried making the FindFirstChild() recursive? Just put in true as the second argument. Some suggestions are: please use guard clause!

Example of guard clause:

-- bad code
if conditionA then
 if conditionB then
   -- do something
  end
end
-- guard clause code (good)
if not conditionA then
 return
end
if not conditionB then
 return
end
-- do something 2

Guard clause prevents too much indentations, which makes it more readable (also so your eyes don’t have to jump one line per if statement!)