Roblox: Universal Fall Damage Script

local minimumFallTime = 0.75
-- ^ The minimum time the player has to fall to take damage
local damagePercent = 0.5
-- ^ If its 0.5, their damage is 50% of their MaxHealth * the time they fell
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local Humanoid = script.Parent.Humanoid
local falling = false

function notFreeFalling()
    falling = false
end

function FreeFalling()
    falling = true
end

Humanoid.Died:connect(notFreeFalling)
Humanoid.Running:connect(notFreeFalling)
Humanoid.Jumping:connect(notFreeFalling)
Humanoid.Climbing:connect(notFreeFalling)
Humanoid.GettingUp:connect(notFreeFalling)
Humanoid.FallingDown:connect(notFreeFalling)
Humanoid.Seated:connect(notFreeFalling)
Humanoid.PlatformStanding:connect(notFreeFalling)

Humanoid.FreeFalling:connect(FreeFalling)


local hurtSound
while not hurtSound do
    for _,v in pairs(script.Parent:WaitForChild("Head"):GetChildren()) do
        if v:IsA("Sound") and  v.SoundId == "rbxasset://sounds/uuhhh.wav" then
            hurtSound = v
            break
        end
    end
    wait()
end

while wait() do
    if falling then
        local start = tick()
        repeat wait() until not falling
        print(tick()-start)
        if tick()-start >= minimumFallTime then
            local h,m = Humanoid.Health,Humanoid.MaxHealth
            local damage = (tick()-start)*(m*damagePercent)
            hurtSound:Play()
            Humanoid:TakeDamage((h<damage) and h or damage)
        end
    end
end