-------------------Prgramme de dessin-----------------------------
--Affichage--
function displayLayer(building, layer, height, width)
	local mat = 0
	for i=1,width do
		for j=1,height do
			mat = building[layer][i][j]
			term.setCursorPos(i,j)
			if mat == 0 then
				term.setBackgroundColor(1)
			elseif mat == 1 then
				term.setBackgroundColor(16384)
			else
				term.setBackgroundColor(8192)
			end
			term.write(" ")
		end
	end
end
--Prgramme principal
function paint(hauteur)
	--Preparation de l'affichage de l'image--
	term.setBackgroundColor(1)
	term.clear()
	term.setCursorPos(1,1)
	term.setCursorBlink(false)
	local termHeight
	local termWidth
	termWidth, termHeight = term.getSize()

	--Gestion Event
	local event = ""
	local key = 0
	local x = 0
	local y = 0
	--Données du batiment
	local mat = 1
	local cLayer = 1
	local building = {} --Creation de matrice 3D
	for i=1,hauteur do
		building[i] = {} --Creation de la matrice 2D
		for j=1,termWidth do
			building[i][j] = {} --Création de la ligne
			for k=1,termHeight-1 do
				building[i][j][k] = 0
			end
		end
	end
	--Boucle principale
	while key ~= 28 do
		--Affichage
		displayLayer(building, cLayer, termHeight-1, termWidth)
		term.setBackgroundColor(32768)
		term.setCursorPos(1,termHeight)
		write("^Turtle       Couche " .. cLayer .. "/" .. hauteur .. " Mat : " .. mat)

		event, key, x, y = os.pullEvent()

		--Traitement de l'event
		if event == "mouse_drag" or event == "mouse_click" then --Souris
			if y < termHeight then
				if key == 1 then --Clic gauche
					building[cLayer][x][y] = mat
				elseif key == 2 then --Clic droit
					building[cLayer][x][y] = 0
				end
			end
		elseif event == "key" then --Clavier
			if key == 42 then --Maj
				if mat == 1 then
					mat = 2
				else
					mat = 1
				end
			elseif key == 200 then --Fleche haut
				if cLayer < hauteur then
					cLayer = cLayer + 1
				end
			elseif key == 208 then --Fleche bas
				if cLayer > 1 then
					cLayer = cLayer - 1
				end
			end
		end
	end

	--Preparation de l'affichage de la console--
	term.setBackgroundColor(32768)
	term.clear()
	term.setCursorBlink(true)
	term.setCursorPos(1,1)
	return building
end

-------------------Programme de construction-----------------------------
function goForward()
	while not(turtle.forward()) do
		turtle.dig()
	end
end

function goUp()
	while not(turtle.up()) do
		turtle.digUp()
	end
end

function place(mat)
	local slot = 1
	if turtle.detectDown() then
		turtle.digDown()
	end
	if mat == 0 then
		return
	--Contage des materiaux disponibles--
	elseif mat == 1 then
		slot = 1
		while slot < 9 and turtle.getItemCount(slot) == 0 do
			slot = slot + 1
		end
		if slot == 9 then slot = 1 end --Si il n'y a plus de matériau
	elseif mat == 2 then
		slot = 9
		while slot < 17 and turtle.getItemCount(slot) == 0 do
			slot = slot + 1
		end
		if slot == 17 then slot = 9 end --Si il n'y a plus de matériau
	end
	turtle.select(slot)
	turtle.placeDown()
end

function construct(building, width, depth, height)
	local x = 1
	local y = depth
	local evenY = -1
	local evenX = 1
	for currentLayer=1,height do
		while x >= 1 and x <= width do-- On fait la couche
			while y >= 1 and y <= depth do-- On fait la colonne
				place(building[currentLayer][x][y])
				print(x .. " " .. y)
				if (y > 1 and evenY == -1) or (y < depth and evenY == 1) then
					goForward()
				end
				y = y + evenY
			end
			if (x > 1 and evenX == -1) or (x < width and evenX == 1) then
				if evenY == -1 then --Demi tour
					turtle.turnRight()
					goForward()
					turtle.turnRight()
					evenY = 1
					y = 1
				elseif evenY == 1 then
					turtle.turnLeft()
					goForward()
					turtle.turnLeft()
					evenY = -1
					y = depth
				end
			else
				goUp()
				turtle.turnLeft()
				turtle.turnLeft()
			end
			x = x + evenX
		end

	end
end
-------------------Main-----------------------------
local hauteur = nil
local building
local event = ""
local key = 0
local x = 0
local y = 0

term.clear()
term.setCursorPos(1,1)
while hauteur == nil or hauteur < 1 do
	print("Indiquez la hauteur de votre batiment")
	hauteur = tonumber(read())
end
building = paint(hauteur)
local termHeight
local termWidth
termWidth, termHeight = term.getSize()
construct(building, 3, termHeight-1, hauteur)