Ray can only hit 1 side of parts

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#1

I’m trying to make a wallrun but the ray I’m using can only hit 1 side of a part. I haven’t been able to find anything about it. Everything is currently done in a local script.

Code:

local plr = game.Players.LocalPlayer
local chr = plr.Character or plr.CharacterAdded:Wait()
local UIS = game:GetService("UserInputService")

UIS.InputBegan:Connect(function(I,G)
	if G == false then
		if I.KeyCode == Enum.KeyCode.Space then
			local RP = RaycastParams.new()
			RP.FilterType = Enum.RaycastFilterType.Blacklist
			RP.FilterDescendantsInstances = {chr}
			
			local ray = workspace:Raycast(chr.HumanoidRootPart.Position,(chr.HumanoidRootPart.CFrame * CFrame.new(2,0,0)).Position,RP)
			workspace.RayPart.CFrame = chr.HumanoidRootPart.CFrame * CFrame.new(2,0,0)
			if ray and ray.Instance then
				warn("HIT")
			end
		end
	end
end)
#2

Rays only return the part they hit first, and the normal of the surface first intersected. So you can’t get the other side unless you cast another ray.

#3

The second argument to Raycast is a direction, you’re giving it a position. Change this line to:

local ray = workspace:Raycast(chr.HumanoidRootPart.Position, chr.HumanoidRootPart.CFrame.RightVector * 2, RP)
1 Like
#4

thanks a lot. I somehow didn’t realize that until now