Breath meter ?

hmm ..using this value detection isnt the best for a breathe script cause when the player floats in water with his head still being above the water surface then he will still lose breath ...

i woulds suggest something complex ...i would make a morph into the spawn point which welds a small part under the players mouth and call it "b" for breath .

Now i would place a invisible part inside the whole water which contains a script which sets a value to true as long as the part "b" is touching it . (dont worry ill post these two scripts under this text wall ^^)

now we need an starter gui ..idk on how to make it animated ..but i know the rest a bit .. so this gui ..lets call it breathmeter contains a number value called "breath" and set it to 100

Now "->AS long<-" as the part "b" inside players head is touching the water part
->The script inside the water part will search inside the playergui for the breathmeter and inside it for the breath value and lower it by -1 each 0.5 of wait time . and once it reached 0 it will stop lowering it

...well sadly i dont know how to script this part ..i often tried similar things but always failed ):

now once the breathe value reaches 0 the player will get like like 1 damage after each 1 second of wait time ->but only if the breathe value is is smaller than 1 once the value is bigger than 1 the damage script part will stop .

sorry for the long text now ill post the morph and the while touching script((but without detection of the b part sorry ))

function Touched(hit)
local human = hit.Parent:findFirstChild("Humanoid")
	script.Parent.Grounded.Value = true  ---get sure a value named :Grounded is inside the part
	
	end
	


function TouchEnd()
	script.Parent.Grounded.Value = false
	
end

script.Parent.Touched:connect(Touched)
script.Parent.TouchEnded:connect(TouchEnd)

Now the script which welds the b part onto players head ..ya can also use a hat which contains the part called "b"

function onTouched(hit)
	if hit.Parent:findFirstChild("Humanoid") ~= nil and hit.Parent:findFirstChild("Head") == nil then
		local g = script.Parent.Parent.Head:clone()
		g.Parent = hit.Parent
		local C = g:GetChildren()
		for i=1, #C do
			if C[i].className == "Part" or C[i].className == "UnionOperation" or C[i].className == "WedgePart"  then
				local W = Instance.new("Weld")
				W.Part0 = g.Middle
				W.Part1 = C[i]
				local CJ = CFrame.new(g.Middle.Position)
				local C0 = g.Middle.CFrame:inverse()*CJ
				local C1 = C[i].CFrame:inverse()*CJ
				W.C0 = C0
				W.C1 = C1
				W.Parent = g.Middle
			end
				local Y = Instance.new("Weld")
				Y.Part0 = hit.Parent.Head
				Y.Part1 = g.Middle
				Y.C0 = CFrame.new(0, 0, 0)
				Y.Parent = Y.Part0
		end

		local h = g:GetChildren()
		for i = 1, # h do
			if h[i].className == "Part" or C[i].className == "UnionOperation" or C[i].className == "WedgePart"  then
				h[i].Anchored = false
				h[i].CanCollide = false
			end
		end
		
	end
end

script.Parent.Touched:connect(onTouched)

^ ^ ^ ^ ^ place this script into your spawn location/spawn point then place a model called Head into your spawn location and place the "b part inside this model ..make sure the b part is anchored and invisible .

About the other scripts ..well ya will need many script parts which contains many funtions that check if a local script value are true or false ..i cant help ya any better sorry i have no time left for further explanations and thoughts...