Alternative to TouchEvent (Raycast)?

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2

Perhaps with spatial queries?

You could use :GetPartsInPart (more accurate but more expensive) or :GetPartBoundsInBox (for simple brick-like hitboxes)

:GetPartsInPart 

local lp = game:GetService('Players').LocalPlayer
local char = workspace:WaitForChild(lp.Name)

local param = OverlapParams.new()
param.FilterDescendantsInstances = {char}
param.FilterType = Enum.RaycastFilterType.Blacklist
param.MaxParts = 1

local parts = {}
for _, v in ipairs(char:GetChildren()) do
	if v:IsA('MeshPart') then
		table.insert(parts, v)
		print(v)
	end
end

while char do
	for _, v in ipairs(parts) do
		char:SetAttribute(v.Name, #workspace:GetPartsInPart(v, param) > 0)
	end
	task.wait()
end
:GetPartBoundsInBox (extended hitbox) 

local lp = game:GetService('Players').LocalPlayer
local char = workspace:WaitForChild(lp.Name)

local param = OverlapParams.new()
param.FilterDescendantsInstances = {char}
param.FilterType = Enum.RaycastFilterType.Blacklist
param.MaxParts = 1

local parts = {}
for _, v in ipairs(char:GetChildren()) do
	if v:IsA('MeshPart') then
		table.insert(parts, v)
		print(v)
	end
end

local extension = Vector3.new(.1, .1, .1)

while char do
	for _, v in ipairs(parts) do
		char:SetAttribute(v.Name, #workspace:GetPartBoundsInBox(v.CFrame, v.Size + extension, param) > 0)
	end
	task.wait()
end

Here’s a demo of the :GetPartBoundsInBox method that you can try yourself:
touchedAlternative.rbxl (34.8 KB)

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