Parts making sounds after hitting ground

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#1

Is there any way to make a script that plays a sound whenever it falls from a certain height or gets flung into walls or other parts?

Like if I were to throw an object across the room and it would hit a wall, how would I make a sound play on impact?

Side note: the touched function does not work very well.

#2

runservice.heartbeat

detect before velocity and current velocity
subtract

if the velocity is now zero after it was 100, we know it hit something

play sfx

local before velocity = 0

hearbeat connect
local current veloctiy = part velocity
if current velocity - before velocity >= 30 then
pay sound it hit
end

before velocity = current velocity
end

that’s an example

this is the most reliable and precise method

#3

haven’t tested it myself but I would solve it like this:

Create a part, name it hitbox and use a RigidConstrant to bind the thrown part and the hitbox.

Make the hitbox the same shape as the part and make it CanCollide false

Use a loop to constantly check if there’s any parts (Beyond the thrown item) within this hitbox.

If there is a part within this hitbox (and if you want you could also check if the linear assembly velocity drops by more than 10% or what ever value), fire the sound

Make the hitbox smaller for more accurate sounds, run the code on the client so that the physics doesn’t cause lag

#4

You could raycast towards the part’s velocity in a Heartbeat loop in order to detect collision.

local RunService = game:GetService("RunService")

local targetPart = script.Parent
local raycastParams = RaycastParams.new()

raycastParams.FilterType = Enum.RaycastFilterType.Exclude
raycastParams.FilterDescendantsInstances = {targetPart}

local LARGEST_AXIS_SIZE = math.max(targetPart.Size.X, targetPart.Size.Y, targetPart.Size.Z)

local updateConnection = nil
updateConnection = RunService.Heartbeat:Connect(function()
	local velocityRaycast = workspace:Raycast(targetPart.Position, targetPart.AssemblyLinearVelocity.Unit * LARGEST_AXIS_SIZE)
	
	if not velocityRaycast then
		return
	end
	
	updateConnection:Disconnect()
	-- Handle playing sound.
	print("Hit something")
end)