[Solved.] Raycast issue

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#1

Hey devs. I have a problem. I’m not very good at raycasting, and I really need some help with this script. Basically, the goal is to go through every Instance in the workspace and see if it’s close enough to change its color to red. However, like I said before, I’m not great at raycasting, and this is my awful script down here that nearly crashed the game.

function CastRay(Caster)
	local Descendants = workspace:GetDescendants()
	local raycastParams = RaycastParams.new()
	raycastParams.FilterType = Enum.RaycastFilterType.Include
	raycastParams.FilterDescendantsInstances = {workspace.Model}
	raycastParams.IgnoreWater = true
	
	for _, v in ipairs(Descendants) do
		local raycastResult = workspace:Raycast(Caster.Position, Caster.CFrame.LookVector * 50, raycastParams)
		if raycastResult then
			local Inst = raycastResult.Instance
			if Inst and Inst:IsA("Part") then
				print("Object hit by ray:", raycastResult.Instance:GetFullName())
				print("Position:", raycastResult.Position)
				Inst.Color = Color3.fromRGB(200, 0, 0)
				print("The part's color is now:", Inst.Color)
			end
		else
			print("Nothing was hit!")
		end
	end
end

local Caster = script.Parent.Caster

while true do
	task.wait(3)
	CastRay(Caster)
end
#2

“Close enough” in what way?
You should elaborate more on what you are trying to do. Why is raycasting necessary?

#3

Raycasting is not the way to so this.
Use magnitude to compare distances (Caster.Position - DescendantPosition).Magnitude < maxdistance