Why isn't my PressurePlate Working?

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#1

Hello There,

So for one of the puzzles in my game i need a pressure plate.
But when i made one it wasn’t working, when i made it print out “Touched” and “TouchEnded” i saw that they followed after eachother very quickly, but i need an event that runs when the part has fully left the plate’s body.
Do you know how to fix this or an event which i can use?
Script In the pressure plate:

local Part = script.Parent
local LastHit = nil
local TweenService = game:GetService("TweenService")
local Tweeninfo = TweenInfo.new(1,Enum.EasingStyle.Linear,Enum.EasingDirection.In,0,false,0)

Part.Touched:Connect(function(hit)
	Part:SetAttribute("SignalON",true)
	LastHit = hit
	TweenService:Create(Part,Tweeninfo,{Position = Part.Position - Vector3.new(0,2,0)}):Play()
	print("Touched")
end)
Part.TouchEnded:Connect(function(hit)
	if not LastHit then return end
	if LastHit ~= hit then return end
	Part:SetAttribute("SignalON",false)
	TweenService:Create(Part,Tweeninfo,{Position = Part.Position + Vector3.new(0,2,0)}):Play()
	print("TouchEnded")
end)

Thanks In Advance!

3 Likes
#2

The problem is that a player’s character has many body parts, and it runs every time any of the body parts touches or stops touching the plate. The character is a bit “shaky” and it’s possible that when you walk around, small body parts touch and stop touching very quickly.

I would fix this by having a non-collidable invisible box above the plate, and checking if it is touched by the player’s HumanoidRootPart specifically.
(Just return if the part that is touching isn’t equal to the HumanoidRootPart)

5 Likes
#3 
local Part = script.Parent
local TweenService = game:GetService("TweenService")

local lastHit = nil

local tweenInfo = TweenInfo.new(1,Enum.EasingStyle.Linear,Enum.EasingDirection.In,0,false,0)

Part:SetAttribute("SignalON", false)

Part.Touched:Connect(function(hit)
    if not Part.SignalON then
        Part:SetAttribute("SignalON", true)
        lastHit = hit

	    TweenService:Create(Part, tweenInfo, {Position = Part.Position - Vector3.new(0,2,0)}):Play()
	    print("Touched")
    end
end)

Part.TouchEnded:Connect(function(hit)
    if hit.Parent == lastHit.Parent and Part.SignalON == true then
        Part:SetAttribute("SignalON", false)

	    TweenService:Create(Part, tweenInfo, {Position = Part.Position + Vector3.new(0,2,0)}):Play()
	    print("TouchEnded")
    end
end)
1 Like
#4

well it works now, but it doesn’t play the tweens, is it because touch and touchended fire too quickly ?

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#5

One of the body parts for example LeftFoot touched it, but then it left triggering the TouchEnded. But another part like the RightFoot might’ve stayed in.

2 Likes
#6

The Touched and TouchEnded events should have a debounce in them with a task.wait(some time, depends on how sensitive you want it) to get rid of multiple firings.

2 Likes
#7

so like a boolean and if it is false it returns, and then a task.wait , after we set it back to true so they can run again?

1 Like
#8

Precisely.
I searched debounce on their documentation site and it used to have a link, but it doesn’t show anymore for some reason. A quick google search found it though: Debounce Patterns | Documentation - Roblox Creator Hub
You seem to have a SignalOn boolean, and lastHit = Hit, but a boolean made true and false in each of the functions with a task.wait(2) or whatever time works for you.

2 Likes
#9

so something like this?

local Part = script.Parent
local TweenService = game:GetService("TweenService")

local lastHit = nil
local CanFire = true

local tweenInfo = TweenInfo.new(1,Enum.EasingStyle.Linear,Enum.EasingDirection.In,0,false,0)

Part:SetAttribute("SignalON", false)

Part.Touched:Connect(function(hit)
	if not CanFire then return end
	if not Part:GetAttribute("SignalON") then
		Part:SetAttribute("SignalON", true)
		CanFire = false
		lastHit = hit

		local twen = TweenService:Create(Part, tweenInfo, {Position = Part.Position - Vector3.new(0,2,0)})
		twen:Play()
		repeat wait() until twen.PlaybackState == Enum.PlaybackState.Completed
		CanFire = true
	end
end)

Part.TouchEnded:Connect(function(hit)
	if not CanFire then return end
	if not lastHit then return end
	if hit.Parent == lastHit.Parent and Part:GetAttribute("SignalON") == true then
		Part:SetAttribute("SignalON", false)
		CanFire = false

		local twen = TweenService:Create(Part, tweenInfo, {Position = Part.Position + Vector3.new(0,2,0)})
		twen:Play()
		repeat wait() until twen.PlaybackState == Enum.PlaybackState.Completed
		CanFire = true
	end
end)
1 Like
#10

Put

task.wait(1)  -- since that's the length of your tween, you may want to increase it to keep the touched event from firing before you're ready for it.
CanFire = true

just before the end of the if not CanFire statementsto keep them from firing each and every time the Touched or TouchEnded events fire with the Humanoid. If you set it to true right away then the next Touched or Touchended will fire and run the tween again.

Are the SignalOn, lastHit, and Hit all attempts to get this issue to stop? If so you can get rid of all of them and just have the CanFire debounce.

2 Likes