Make a part fall slowly until it touches another part

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#1

This should be simple, but my part isn’t detecting when it’s touched. Any way to fix this?

#2

It would be better if you can show us your script here along with any possible errors outputted in the Output tab instead of just describing your problem without a clear context.

#3 
local onGround
repeat
		wait(0.001)
		newDrop.Position -= Vector3.new(0, 0.1, 0)
until onGround

newDrop.Touched:Connect(function(hit)
     if hit.Parent.Parent == workspace.Plates.Active then
          onGround = true
     end
end)

No errors. It just doesn’t detect most parts it touches.

#4

Why 0.001 seconds? Try to make it update like every 0.1 seconds your server is probably lagging because of this

#5

Instead of using a code to stimulate the slow-motion of the part falling, use a physics constraint like VectorForce instead.

I tried this in studio and it works well, the event is fired.

#6

False. That has no significant impact of the server’s performance, nor it is the root of the issue.

#7

yeah i was gonna say since when did 0.001 lag the server lmao

#8

Testing this now
char limit char limit

#9

In case if you don’t know how it works:

It applies a force towards where the attachment that you must insert into it is facing, then you have to apply a force that is close to but not equal to the weight of the part. The formula of getting the part’s weight would be Part:GetMass() * workspace.Gravity * c, where c is a constant value ranging between 0 and 1, 0 means no slow motion, while 1 makes it stationary.

#10

The VectorForce isn’t moving the part at all. I’ve set the attachment to a new attachment created inside of the newDrop part, and I’ve set the force, but it doesn’t move.

#11

You must’ve set the property of the VectorForce wrong, can you show me the properties of it?

#12

image

#13

You forgot to set the Force property, obviously it didn’t work. Change the Y value using the formula I have given.

#14

My apologies, I thought that was the internal formula for it. I’m stupid XD

#15

It’s still stationary. The part doesn’t move at all, even with that formula.

#16

Show me what values did you substitute in the c variable in the formula, is it 1? You can show me the properties of the VectorForce instance itself again.

#17

The loop is preventing any other events from running because it is yielding.
Also make sure CanTouch is enabled for the part.
Snippet:

local __ONGROUND = false
coroutine.wrap(function()
repeat
		task.wait()
		newDrop.Position -= Vector3.new(0, 0.1, 0)
until __ONGROUND == true
end)()
newDrop.Touched:Connect(function(hit)
     if hit.Parent.Parent == workspace.Plates.Active then
          __ONGROUND = true
     end
end)
2 Likes
#18

There are a few things:

  • The minimum for wait is 0.03, so wait(0.001), wait(0.03), and wait() are all the same. If you want a faster wait you can use task.wait()
  • Your loop yields, which means the code never creates the touched connection which is meant to end it

To fix your code, simply change the order:

local onGround

newDrop.Touched:Connect(function(hit)
     if hit.Parent.Parent == workspace.Plates.Active then
          onGround = true
     end
end)

repeat
		wait(0.001)
		newDrop.Position -= Vector3.new(0, 0.1, 0)
until onGround

I would also recommend using a connection instead of a loop. It’s nice because it doesn’t yield and cause bugs like this:

local SPEED = 0.1/0.03

local RunService = game:GetService("RunService")

local fallingConnection = RunService.Heartbeat:Connect(function(step)
	newDrop.Position -= Vector3.new(0, 1, 0) * SPEED
end)

newDrop.Touched:Connect(function(hit)
     if hit.Parent.Parent == workspace.Plates.Active then
          -- Stops the function from running
          fallingConnection:Disconnect()
     end
end)

It’s also smoother.

Edit:
Whoops, someone already said that. The real problem is that the part is anchored (probably) so to solve the problem either:

  • Use physics instead (easiest) (like @ItzMeZeus_IGotHacked is saying)
  • Use raycasting or get touching parts every time you move the part to check if it hits something (harder)
#19

I didn’t even notice that! That is actually the solution of the post, I apparently made this thread longer.

#20

I already tried this, I just sent an older version of the code. It detects when some parts touch it, but not all of them

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