When player leaves the game while being in a zone detection

[ILovePizzaToes (ILookManly)]

I want my script to detect if a player is in a zone while leaving, to subtract a number in the NumberValue.

Currently, I have been trying to detect that, but every time it doesn’t seem to be able to detect that.

I don’t think I found any specific topic about what I’m describing here, I have tried looking for “HumanoidRootPart” inside of the zone for the leaving function “PlayerRemoving”, but it wouldn’t work.

local NumberValue = script.Parent.PlayerCount
local counter = script.Parent:WaitForChild("Counter")

local function onTouch(part)
	wait()
	if (part.Name ~= "HumanoidRootPart") then return end
	local character = part.Parent
	NumberValue.Value = NumberValue.Value + 1
	counter.BillboardGui.TextLabel.Text = tostring(NumberValue.Value)
end

local function onTouchEnded(part)
	wait()
	if (part.Name ~= "HumanoidRootPart") then return end
	local character = part.Parent
	NumberValue.Value = NumberValue.Value - 1
	counter.BillboardGui.TextLabel.Text = tostring(NumberValue.Value)
end

script.Parent.TouchEnded:Connect(onTouchEnded)
script.Parent.Touched:Connect(onTouch)

game.Players.PlayerAdded:Connect(function(player)
	player.CharacterRemoving:Connect(onTouchEnded)
end)

[raposaninjagamesxl (foxer)]

Store the player position on heartbeat(or every certain ammount of seconds), then just check if the position is inside of the zone

[ExercitusMortem (Exercitus)]

If the zone is a square, you take the positions of the corners, and the last known position of the player. This does mean you’ll need to track every player’s position, constantly.

Then, you check if the players position is in between those 2 corners. If yes, they were in the zone. If no, they were not.

If your zone is a circle, you take the center of the circle, and you check if the magnitude from the player to the center is larger than the radius. If it is not, they were inside the zone.

[ILovePizzaToes (ILookManly)]

Sounds good, would you be kind enough to give me an example?

[ExercitusMortem (Exercitus)]

local i = 0

local playerPositions = {}

local getAllPositions = function()
	for i, player in game.Players:GetChildren() do
		if player.Character ~= nil and player.Character:FindFirstChild("HumanoidRootPart") ~= nil then
			playerPositions[player]=player.Character.HumanoidRootPart.Position
		end
	end
	print(playerPositions)
end



local zone = workspace.RedZone

local function isPositionInsideZone(position, zoneMin, zoneMax)
	return position.x >= zoneMin.x and position.y >= zoneMin.y and position.z >= zoneMin.z and
		position.x <= zoneMax.x and position.y <= zoneMax.y and position.z <= zoneMax.z
end

local function checkPlayerPosition(plr)
	local lastPos = playerPositions[plr]

	if lastPos then
		local zone = workspace.RedZone
		local zoneMin, zoneMax = zone.Position - zone.Size / 2, zone.Position + zone.Size / 2
		
		if isPositionInsideZone(lastPos, zoneMin, zoneMax) then
			print(plr.Name .. "'s last position is inside the zone.")
		else
			print(plr.Name .. "'s last position is outside the zone.")
		end
	end
end

game.Players.PlayerRemoving:Connect(function(plr)
	local lastPos = playerPositions[plr]
	if lastPos then
		checkPlayerPosition(plr)
	end
end)

while wait(1) do
	i+=1
	--l.transform(Vector3.new(i,50,0))
	getAllPositions()

	--checkPlayerPosition(game.Players:GetChildren()[1])
end

[ILovePizzaToes (ILookManly)]

Thank you, after adding this in, it works.
Sorry for the late response anyway.