Any alternative to spherecast?

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#1

Hey, I recently tried to recreate my own sphere/boxcast. This didn’t work, so I want to know how to create an alternative that works in Roblox. Is there any module or script I could use to do this?

Here is the code if you want:

Failed test :( 
local module = {}

function module.BoxCast(BoxSize,Origin,Direction,Steps)
	local Box = Instance.new("Part")
	if typeof(BoxSize) == Vector3 then
		Box.Size = BoxSize
	else
		Box.Size = Vector3.new(BoxSize,BoxSize,BoxSize)
	end
	Box.Parent = workspace
	
	Box.CFrame = CFrame.new(Origin,Origin+Direction)
	for i = 0,1,1/(Steps+(Origin-Direction).Magnitude) do
		Box.Position:Lerp(Origin+Direction,i)
		local TouchingParts = Box:GetTouchingParts() --Gets intersecting parts
		if #TouchingParts > 0 then 
			Box:Destroy()
			return TouchingParts,Box.Position
		else
			Box:Destroy()
			return nil
		end --Prevents printing an empty table
	end
end

return module
#2

What did you expect to happen with this code, and what happened instead?

#3

I expected a box to be made and lerp to the direction like a normal raycast. The steps is how many times it will check while moving to the direction. And since the box is anchored, nothing happens.

#4

Can you print what’s happening?

#5

No not really. Since anchored parts can’t detect collisions, it’s always nil.

#6

Really? Is your anchored object always CanCollide=false and CanTouch=false?

#7

You can check the code you know. The box in this script isn’t anchored. But since the script runs in under a frame I don’t think the physics work.

#8

Save Box.Position before destroying.

#9

? I am saving it. In a different script I recieve Box.Position after returning.

#10

You might want to look into Roblox’s new spatial query API here. It has functions which can get parts within a box as well as within a sphere.