Raycast not detecting player

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#1

Hey, fellow devs!
I’m making an enemy that uses a magic wand to create a few light beams in a cross pattern that attack you. To detect if you should get damaged or not, I thought about using raycasts from 150 studs in the sky and go down perpendicularly by another 200. The problem is: the ray isn’t hitting anything!

Here’s my code:

-- This code executes when the attack begins
local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Include
for _, player in pairs(game:GetService("Players"):GetChildren()) do
	table.insert(params.FilterDescendantsInstances,player.Character)
	print("inserted "..player.Name)
end





-- This code executes later, and once for each beam
local BeamPos = Target + Vector3.new(i,-.5,i*side)*2 -- Beampos is the position where the Beam hits
local result = workspace:Raycast(Vector3.new(BeamPos.X,150,BeamPos.Z),Vector3.new(0,-200,0),params)

if result then
	local Humanoid = result.Instance:FindFirstAncestorWhichIsA("Model"):FindFirstChild("Humanoid")
	if Humanoid and (table.find(hit,Humanoid) == nil) then
		Humanoid:TakeDamage(self:GetAttribute("Damage"))
		table.insert(hit,Humanoid)
	end
	
end

It has never done damage to anything. I have also tried using Shapecasts, but to no avail.

Help would really be appreciated!!!

EDIT: here’s a video demonstrating the problem.

If the ray hit, I have set up a print to say "Hit" in the console

#2

Uhh, you’re ignoring the player’s character in the raycast params…

#3

The FilterType is Include, not Exclude: that means that only the baseparts included in FilterDescendantsInstances will be considered.
(taken from this article)

#4

Oh didnt see that sorry for the confusion

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#5

double check your beam position, it might be because you’re raycasting the wrong spot

#6

I have already tried visualizing the raycast, but it seems the positions and directions are correct.

#7

try printing the instance the ray is hittin

#8

There is no instance: there’s no result in the first place.
If I do something like

if result then
	print("Hit")
	local Humanoid = result.Instance:FindFirstAncestorWhichIsA("Model"):FindFirstChild("Humanoid")
	if Humanoid and (table.find(hit,Humanoid) == nil) then
		Humanoid:TakeDamage(self:GetAttribute("Damage"))
		table.insert(hit,Humanoid)
	end
	
end

the console doesn’t give any output.

#9

you do know a ray lasts like 0.0001 seconds
maybe it doesnt hit anything

#10

what exactly is self:GetAttribute("Damage")?
also pretty sure raycast will return the character part it hit, not the model

result.Instance:FindFirstAncestorWhichIsA("Model")
#11

What would that have to do with anything?

#12

self is the model of the enemy (script.Parent), and it has a numeric attribute named Damage which’s value is set to 30.
Also, yes, it returns the part: that’s why I find the first ancestor of the part of type model (in this case, the player character), and then get its humanoid.

#13

Didnt you just say it returns no instance?

#14

I was just answering the question, but yes, it doesn’t return anything.

#15

Apparently, by switching to Enum.FilterType.Exclude it now works.
I hate that this is a valid solution, but it is what it is.

1 Like
#16

That made me realize it could have been because of the way you were inserting the characters into params.FilterDescendantsInstances via table.insert. Did you check that if the array is correct?

1 Like
#17

I have already checked that with breakpoints, it’s all fine. It was on of the first things that came to mind when I noticed it wasn’t working.

1 Like
#18

using table.insert with a filter list actually does nothing (just found out after some testing), if it’s working correctly then the exclude should prevent the raycast from hitting your character

use params:AddToFilter(character)

1 Like
#19

Thanks so much, this works too. I didn’t know it existed!

#20

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