local x = 0
local y = 0
local enderchest = 14
local charbon  = 15
local torche = 16
local slot = 0
local cycletorche = 0
local xrecharge = -2
local yrecharge = -2
local savex = 0
local savey = 0
local saveo = 0
local orientation = 0
local nbtunnel = 0
local lgtunnel = 0
local validation = 0
local avancement = 0
local tunnelcourant = 0

function choix()
term.clear()
term.setCursorPos(1,1)
print("bonjour ami mineur")
write("longueur tunnel desiree : ")
lgtunnel = tonumber(read())
write("nombre de tunnel desiree : ")
nbtunnel = tonumber(read())
print("longueur des tunnels choisi : "..(lgtunnel))
print("nombres de couloirs choisi : "..(nbtunnel))
print("es-ce correct ? oui = 1    non = 0")
validation = tonumber(read())
end

function viragegauche()
turtle.turnLeft()
orientation = orientation - 1
if orientation == -1 then
orientation = 3
end
end

function  viragedroite()
turtle.turnRight()
orientation = orientation + 1
if orientation == 4 then
orientation = 0
end
end

function forward()
turtle.dig()
vidage()
turtle.forward()
turtle.digUp()
vidage()
refuel()
if orientation == 0 then
x = x + 1
elseif orientation == 1 then
y = y + 1
elseif orientation == 2 then
x = x - 1
elseif orientation == 3 then
y = y - 1
end
end

  function forwardrecharge()
  turtle.dig()
vidage()
turtle.forward()
vidage()
refuel()
if orientation == 0 then
x = x + 1
elseif orientation == 1 then
y = y + 1
elseif orientation == 2 then
x = x - 1
elseif orientation == 3 then
y = y - 1
end
end

function back()
turtle.back()
refuel()
if orientation == 0 then
x = x - 1
elseif orientation == 1 then
y = y - 1
elseif orientation == 2 then
x = x + 1
elseif orientation == 3 then
y = y + 1
end
end


function recharge()
savex = x
savey = y
saveo = orientation
print("en cours de rechargement")

while y ~= 0 do
while orientation ~= 3 do
viragedroite()
end
forward()
if turtle.getFuelLevel() < 50 then
turtle.select(charbon)
turtle.refuel(2)
turtle.select(1)
end
end

while x ~= 0 do
while orientation ~= 2 do
viragegauche()
end
forwardrecharge()
if turtle.getFuelLevel() < 50 then
turtle.select(charbon)
turtle.refuel(2)
turtle.select(1)
end
end

turtle.select(charbon)
turtle.suckDown()
viragedroite()
turtle.forward()
turtle.select(torche)
turtle.suckDown()
turtle.select(1)
print("rechargement termine, retour au travail")

while x ~= savex do
while orientation ~= 0 do
viragegauche()
end
forwardrecharge()
end

while y ~= savey do
while orientation ~= 1 do
viragedroite()
end
forwardrecharge()
end

while saveo ~= orientation do
viragedroite()
end
savex = 0
savey = 0
saveo = 0
end

function torchage()
if turtle.getItemCount(torche) == 1 then
recharge()
end
cycletorche = cycletorche + 1
if cycletorche == 10 then
turtle.dig()
turtle.forward()
turtle.digUp()
turtle.back()
turtle.select(torche)
turtle.placeUp()
turtle.select(1)
cycletorche = 0
end
end

function refuel()
if turtle.getItemCount(charbon) <= 4 then
recharge()
end
if turtle.getFuelLevel() <= 50 then
turtle.select(charbon)
turtle.refuel(2)
turtle.select(1)
end
end

function tunnel()
while avancement ~= lgtunnel do
forward()
avancement = avancement + 1
refuel()
vidage()
torchage()
end
avancement = 0
sauttunnel()
tunnelcourant = tunnelcourant + 1
end

function sauttunnel()
if orientation == 2 then
turtle.dig()
turtle.forward()
turtle.digUp()
viragegauche()
forward()
forward()
turtle.dig()
turtle.forward()
turtle.digUp()
turtle.back()
turtle.select(torche)
turtle.placeUp()
turtle.select(1)
forward()
viragegauche()
elseif orientation == 0 then
viragedroite()
forward()
forward()
turtle.dig()
turtle.forward()
turtle.digUp()
turtle.back()
turtle.select(torche)
turtle.placeUp()
turtle.select(1)
forward()
viragedroite()
end
end

function happybot()
turtle.up()
turtle. turnLeft()
turtle. turnLeft()
turtle. turnLeft()
turtle. turnLeft()
turtle.turnRight()
turtle.turnRight()
turtle.turnRight()
turtle.turnRight()
turtle.down()
end

function retour()
print("je vous emmerde, et je rentre a ma maison!! ")
while x ~= 0 do
while orientation ~= 2 do
viragegauche()
end
forwardrecharge()
if fuellevel < 50 then
turtle.select(charbon)
turtle.refuel(2)
turtle.select(1)
end
end
while y ~= 0 do
while orientation ~= 3 do
viragedroite()
end
forwardrecharge()
end
end

function vidage()
if turtle.getItemCount(13) > 0 then
turtle.dig()
turtle.forward()
turtle.digUp()
turtle.back()
turtle.select(enderchest)
turtle.place()
for slot=1,13 do
turtle.select(slot)
while turtle.getItemCount(slot)  > 0 do
turtle.drop(turtle.getItemCount(slot))
if turtle.getItemCount(slot) > 0 then
sleep(1)
end
end
end
end
turtle.select(enderchest)
turtle.dig()
turtle.select(1)
end

while validation ~= 1 do
choix()
end
term.clear()
term.setCursorPos(1,1)
print("tache aquise, travail en cours ")

while tunnelcourant ~= nbtunnel do
tunnel()
end
retour()
happybot()
print("travail termine")