Choppin

--Declaring Variables
local isWood
local Length
local pastSelect
local Block
local Coal
local Sap
local Amount
local Wait
local Trees = 0

--Start
function start()
    term.setTextColor( colors.green )
    print("Welcome to the wood chopping program.")
    term.setTextColor( colors.red )
    print("How long do you want it to be?")
    Length = tonumber( io.read() )
    term.setTextColor( colors.green )
    print("The length is", Length)
    term.setTextColor( colors.red )
    print("How long do you want it to wait before checking for trees(in seconds)?")
    Wait = tonumber( io.read() )
    term.setTextColor( colors.green )
    print("The turtle will wait", Wait, "seconds")
    term.setTextColor( colors.blue )
    print("To Do: \n  1:Place 2 chests on on top of the\n    other infront of the turtle so its\n    facing it")
    term.setTextColor( colors.green )
    print("Press any key to continue")
    os.pullEvent("key")
    term.setTextColor( colors.blue )
    print("  2:Place 10 charcoal in the bottom\n    chest and", (Length * 2), "saplings in the top\n    chest")
    term.setTextColor( colors.green )
    print("Press any key to continue")
    os.pullEvent("key")
    term.setTextColor( colors.blue )
    print("  3:Place", (Length * 2), "of any block if you dont\n    want any large trees to grow")
    term.setTextColor( colors.green)
    print("Press any key to continue")
    os.pullEvent("key")
    term.setTextColor( colors.blue )
    print("  4:Route all saplings to the top chest\n    and part of the charcoal to the\n    bottom chest")
    term.setTextColor( colors.green )
    print("Press any key to continue")
    os.pullEvent("key")
    term.setTextColor( colors.blue )
    print("  5:Make sure there is some method to\n    suck up the dropped items")
    term.setTextColor( colors.green )
    print("Press any key to continue")
    os.pullEvent("key")
    term.setTextColor( colors.blue )
    print("  6:Make sure the space is clear for\n    the turtle")
    term.setTextColor( colors.orange )
    print("Press any key to start turtle.")
    os.pullEvent("key")
    getCoal()
    fuel()
    getSap()
    turtle.turnRight()
    --Places sapplings
    turtle.select(2)
    for i = 1, Length do
        turtle.dig()
        turtle.place()
        turtle.turnRight()
        turtle.turnRight()
        turtle.dig()
        turtle.place()
        turtle.turnLeft()
        turtle.forward()
        turtle.turnLeft()
    end
    turtle.turnRight()
    turtle.back()
    turtle.turnLeft()
    for i = 1, 10 do
        turtle.up()
    end
    turtle.select(3)
    --Makes the top line to stop big trees
    for i = 1, Length do
        turtle.place()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.place()
        turtle.turnRight()
        turtle.forward()
        turtle.turnRight()
    end
    turtle.turnRight()
    turtle.forward()
    for i = 1, 10 do
        turtle.down()
    end
    turtle.select(2)
end

--Main part that loops
function main()
    for i = 1, Length do
        fuel()
        turtle.turnLeft()
        check()
        turtle.turnRight()
        turtle.turnRight()
        check()
        turtle.turnLeft()
        turtle.forward()
    end
    turtle.turnLeft()
    turtle.turnLeft()
    for i = 1, Length do
        turtle.forward()
    end
    getCoal()
    getSap()
    turtle.turnLeft()
    turtle.turnLeft()
    sleep()
end

function fuel()
    if (turtle.getFuelLevel() < 100) then
        repeat
            pastSelect = turtle.getSelectedSlot()
            turtle.select(1)
            turtle.refuel(1)
            turtle.select(pastSelect)
        until turtle.getFuelLevel() >= 100
    end
end

function check()
    turtle.place()
    local Um, Block = turtle.inspect()
    if (Block.name == "minecraft:log") then
        Trees = Trees+1
        print("Total trees:", Trees)
        chopNplant()
    end
end

function getCoal()
    if (turtle.getItemCount(1) < 10) then
        pastSelect = turtle.getSelectedSlot()
        Amount = 64 - turtle.getItemCount(1)
        turtle.select(1)
        turtle.suck(Amount)
        turtle.select(pastSelect)
    end
end

function getSap()
    if (turtle.getItemCount(2) < Length) then
        turtle.up()
        pastSelect = turtle.getSelectedSlot()
        Amount = 64 - turtle.getItemCount(2)
        turtle.select(2)
        turtle.suck(Amount)
        turtle.select(pastSelect)
        turtle.down()
    end
end

function sleep()
    os.sleep(Wait)
    main()
end

function chopNplant()
    turtle.dig()
    turtle.place()
    pastSelect = turtle.getSelectedSlot()
    turtle.select(3)
    turtle.drop()
    turtle.select(pastSelect)
end

start()
main()