Hey there! I’m currently trying to make a game and i’m wondering how i could make a model appear if you got close enough to it, and disappear again if you got further away from it. I’m not that good at scripting i mostly build so this is a hard problem to solve. (Yes i’ve tried searching i haven’t found anything)
This is what i’m trying to make:
Magnitude of part of the character (torso, head, humanoidrootpart, etc.) and the part you want to appear and dissapear.
I barely know any scripting this tell me nothing 
while wait() do
local magnitude = (game.Players.LocalPlayer.Character.HumanoidRootPart.Position - workspace.PartToChange.Position).Magnitude
if magnitude > 10 then workspace.PartToChange.Transparency = 1
else workspace.PartToChange.Transparency = 0
end
end
Put in a local script in StarterPlayerScripts or StarterGui, change 10 to the distance and PartToChange to the part name.
It is bad practice to use while wait() do loops, you should be using either RenderStepped or Heartbeart, depending on your situation from RunService.
So your code would look like this:
local RS = game:GetService("RunService")
RunService.RenderStepped:Connect(function()
local Dist= (game.Players.LocalPlayer.Character.HumanoidRootPart.Position - workspace.PartToChange.Position).Magnitude
if Dist > 10 then
workspace.PartToChange.Transparency = 1
else
workspace.PartToChange.Transparency = 0
end
end)
Another way you can do this without magnitude is to use DistanceFromCharacter however if the player does not have a character (if they have died for example) it will return 0, tricking your code into thinking they are standing on the object.
This only works with parts, I’m trying to do it with a model
Using the better loop from @Canopius because they are correct about looping:
local RS = game:GetService("RunService")
RunService.RenderStepped:Connect(function()
local Dist= (game.Players.LocalPlayer.Character.HumanoidRootPart.Position - workspace.Model.PartToChange.Position).Magnitude
if Dist > 10 then
for i,v in pairs (workspace.Model:GetChildren()) do
if v:IsA("BasePart")
then v.Transparency = 1
end
end
else
for i,v in pairs (workspace.Model:GetChildren()) do
if v:IsA("BasePart")
then v.Transparency = 0
end
end
end
end)
If it’s formatted slightly wrong, I’m sorry, I’m typing this on a phone.
If you are trying to do it with a model all you need to do is loop through all of the base parts in a model and change their transparency:
local Children = workspace.Model:GetChildren() -- Can also use GetDescendants()
for index = 1, #Children() do
if Children[index]:IsA("BasePart") then
Children[index].Transparency = 0
end
end
How do I make it to work with folders?
Just change the path that it is looking in, so instead of
workspace.Model:GetChildren()
you could do something like:
workspace.Model["Folder 1 Name"].Folder2Name:GetChildren()
how would i make it fade in instead of abruptly popping into existence
Use TweenService, You can find more info on the devwiki
I am trying to make a barrier appear when someone walks near and disappear when u walk away, Its a very big barrier. Any ideas how to do that? I have these 2 blocks of code but idk how to get them to work together.
local RS = game:GetService("RunService")
RS.RenderStepped:Connect(function()
local Dist= (game.Players.LocalPlayer.Character.HumanoidRootPart.Position - workspace.Model.PartToChange.Position).Magnitude
if Dist > 10 then
for i,v in pairs (workspace.Model:GetChildren()) do
if v:IsA("BasePart")
then v.Transparency = 1
end
end
else
for i,v in pairs (workspace.Model:GetChildren()) do
if v:IsA("BasePart")
then v.Transparency = 0
end
end
end
end)
function GetClosestPoint(PlayerPos, Barrier) -- Barrier is the barrier object
local RelPoint = Barrier.CFrame:PointToObjectSpace(PlayerPos)
local ClampedPos = Vector3.new(
math.clamp(RelPoint.X, -Barrier.Size.X/2, Barrier.Size.X/2),
math.clamp(RelPoint.Y, -Barrier.Size.Y/2, Barrier.Size.Y/2),
math.clamp(RelPoint.Z, -Barrier.Size.Z/2, Barrier.Size.Z/2)
)
local ClosestPoint = Barrier.CFrame:PointToWorldSpace(ClampedPos)
return ClosestPoint
end
I also need to add a tween service so the closer u get the more visible the part is
Could we use tweenservice to make the part transparency go up smoother?