local localPlayerCharacter = game.Players.LocalPlayer.Character
local playerHumanoid  = game.Players.LocalPlayer.Character.Humanoid
local currentSound = {} -- test, to hold current sound instance

--deletes all default roblox sounds
for _, children in pairs (localPlayerCharacter.HumanoidRootPart:GetChildren("")) do

	if children:IsA("Sound") then

		children:Destroy()

	end
end

-- SoundId, pitch?, number Volume, boolean Looped (values are replaced in for loop below)
local sounds = {

	--[Enum.Material.Plastic] = nil,
	[Enum.Material.LeafyGrass] = {"http://www.roblox.com/asset/?id=16720281", 1, 1, true},
	[Enum.Material.Wood] = {"http://www.roblox.com/asset/?id=379484117", 1, .5, true}

}

	--creates all the sounds, and then puts the sound instance in the array
for material, data in pairs(sounds) do --material is the key, and data is the value inside the key
	local newSound = Instance.new("Sound", localPlayerCharacter.HumanoidRootPart)
	wait(1)
	newSound.Name    = material.Name
	newSound.SoundId = data[1]
	newSound.Pitch   = data[2]
	newSound.Volume  = data[3]
	newSound.Looped  = data[4]
	sounds[material]   = {newSound} --places the new sound instance in the array, ready for use.
end


--is the player moving
local isWalking

playerHumanoid.Running:connect(function(speed)
	if speed == 0 then
		--print("Player is not walking")
		isWalking = false
	else
		--print("Player is walking")
		isWalking = true
	end
end)



--check if the player is touching the ground, not using right now
function isGroundedFunc()
	if playerHumanoid.FloorMaterial ~= Enum.Material.Air then
		--print("Player is on the ground")
		return true
	else
		--print("Player is NOT on the ground!")
	end
	--print("Player is stepping on: ", playerHumanoid.FloorMaterial, type(playerHumanoid.FloorMaterial))
end
local isGrounded = isGroundedFunc()


wait(5)--for debugging
while wait() do
	local touchingMaterial = playerHumanoid.FloorMaterial
	if isWalking then
		if currentSound ~= touchingMaterial then
			if sounds[touchingMaterial] == nil then
				print("sounds[touchingMaterial == nil")
			else
				currentSound = sounds[touchingMaterial][1] --need to study what this does... kind of smart(including the stuff below)
				currentSound:Play()
			end
		end
	elseif isWalking == false then

		sounds[touchingMaterial][1]:Stop()
		--currentSound:Stop()
		--currentSound = nil
		print("Did the sound stop?") -- Yes, it did. But only one instace of the sound did.

	end
end