sound playing on crash.

[shadow rock]

could you give me edit i can help

[meager kindle]

** You are now Level 5! **

[tame tendon]

I cant give edit

[shadow rock]

ok

[signal current]

why not use .Touched instead of trying to calculate a sudden stop based on velocity? If you want to keep your velocity method, i think your logic for hasNegativeImpact could be wrong, or quite possibly how you're not using velocityChange at all.

[shadow rock]

lete me see

[tame tendon]

okay lets say i use .Touched but it doesn't solve my problem at all. as it will still be triggered as it hits the ground

[meager kindle]

** You are now Level 2! **

[shadow rock]

this should fix it local character = script.Parent
local RunService = game:GetService("RunService")
local humanoidRootPart = character:WaitForChild("Head")
local humanoid = character:WaitForChild("Humanoid")
local sound = character:FindFirstChild("ImpactSound") or Instance.new("Sound")
sound.Name = "ImpactSound"
sound.SoundId = "rbxassetid://8595980577"
sound.Volume = 1
sound.Looped = false
sound.Parent = character

local lastVelocity = Vector3.new()
local wallImpactThreshold = 20
local lastPlayTime = 0

RunService.Heartbeat:Connect(function()
local velocity = humanoidRootPart.Velocity
local velocityChange = (velocity - lastVelocity).Magnitude
local hasSignificantHorizontalImpact = (lastVelocity.X > 0 and velocity.X < 0) or
(lastVelocity.X < 0 and velocity.X > 0) or
(lastVelocity.Z > 0 and velocity.Z < 0) or
(lastVelocity.Z < 0 and velocity.Z > 0)

-- Ignore impacts where the velocity change is mostly vertical (Y-axis)
local horizontalChange = Vector3.new(velocity.X - lastVelocity.X, 0, velocity.Z - lastVelocity.Z).Magnitude
local verticalChange = math.abs(velocity.Y - lastVelocity.Y)

if horizontalChange > verticalChange and velocityChange > wallImpactThreshold and hasSignificantHorizontalImpact and tick() - lastPlayTime > 0.5 then
    sound:Play()
    lastPlayTime = tick()
end

lastVelocity = velocity

end)

i edit it for you in my studio

for auto correct lol

[tame tendon]

did you just use chatgpt

[shadow rock]

no

what makes you think that

[tame tendon]

you didnt even put in a character variable

[shadow rock]

mb

1 sec

ill fix it

lol

[tame tendon]

no need

[shadow rock]

i forgot to send the top part

[signal current]

tag any part that is considered "ground". Another way is to act on the direction between the 2 parts (so that hitting a roof will play the sound, but hitting a floor will not). I can't remember if roblox gives this with the touched event, but you can easily just use a raycast straight down from the player

[tame tendon]

I could but i wanted to make a automated thing

and also

the exposed parts

the edge here

if i crash into it

it should make the sound

but if i use tag and consider that part a ground

hitting the edge wont make the sound

[signal current]

pretty good edge case. details

[tame tendon]

?

suprisingly @shadow rock

your code does seem to work well

[shadow rock]

oh it worked

nice

thanks

[tame tendon]

no let me see what you did with raycast

[shadow rock]

-- / Pre fabs PluginDecember 15, 2024 3:40 AM \ --     
local ReplicatedStorage = game:GetService('ReplicatedStorage') 
local RunService = game:GetService('RunService')
local ServerScriptService = game:GetService('ServerScriptService') 
local Players = game:GetService('Players')

local character = script.Parent
local RunService = game:GetService("RunService")
local humanoidRootPart = character:WaitForChild("Head")
local humanoid = character:WaitForChild("Humanoid")
local sound = character:FindFirstChild("ImpactSound") or Instance.new("Sound")
sound.Name = "ImpactSound"
sound.SoundId = "rbxassetid://8595980577"
sound.Volume = 1
sound.Looped = false
sound.Parent = character

local lastVelocity = Vector3.new()
local wallImpactThreshold = 20
local lastPlayTime = 0

local function isWall(hit)
    if not hit then return false end
    local normal = hit.Normal

    return math.abs(normal.Y) < 0.5
end

RunService.Heartbeat:Connect(function()
    local velocity = humanoidRootPart.Velocity
    local velocityChange = (velocity - lastVelocity).Magnitude

    if velocityChange > wallImpactThreshold and tick() - lastPlayTime > 0.5 then
        -- Perform a raycast in the direction of movement
        local rayOrigin = humanoidRootPart.Position
        local rayDirection = velocity.Unit * 2
        local raycastParams = RaycastParams.new()
        raycastParams.FilterDescendantsInstances = {character}
        raycastParams.FilterType = enum.RaycastFilterType.Blacklist

        local raycastResult = workspace:Raycast(rayOrigin, rayDirection, raycastParams)

        if raycastResult and isWall(raycastResult) then
            sound:Play()
            lastPlayTime = tick()
        end
    end

    lastVelocity = velocity
end)

here

idk if it works

[signal current]

yeah that kinda leaves you with the velocity calculation. another way still is to use touched and use a raycast to decide if the surface being touched is facing a certain direction, namely vector3.up

[shadow rock]

cant rlly test tell me if it works if you want to

[tame tendon]

yeah thats what i wanted to see

[shadow rock]

also i made a plugin it can be very usefull if you wanna see it

https://create.roblox.com/store/asset/13687344217/PreFabs-V21-Revamped

[shadow rock]

wdym suprisingly

[tame tendon]

what does it do