Turtle 3x3 w torch

distance = 25 --turtle will go twice this far
torchCounter = 3
turtleName = os.getComputerLabel()
ownerTabletId = 2 --what is the computer # of the owner's PDA where messages will be sent.



--open wireless if available. modem is on the left arm.
    if peripheral.isPresent("left") == true then
      local wireless = peripheral.wrap("left")
      --wireless.open(4)
      rednet.open("left")
      wireless.open(65535)
        else
                print("no modem available")
    end

--turtle movement functions

function moveForward()
        while turtle.detect() == true do
                turtle.dig()
                os.sleep(0.5)
                --print("there is something in the way")
                --return to top of loop here.
                restartLoop = 1
        --else
                --turtle.forward()
                --restartLoop = 0 --this is junk but might do the job until i make a better way
        end
        --print("the function is actually running")
        turtle.forward()
        while turtle.detectUp() do
                turtle.digUp()
                os.sleep(0.5)
        end
        turtle.digDown()
end

--turtle inventory dump module
--all slots will be dumped to the inventory in front of the turtle
-- i = 1
-- while i < 17 do
--      slot = 1
--      turtle.select(slot)
--      turtle.drop()
--      i = (i + 1)
-- end

--pick up all items from normal size chest
--turtle will not be able to hold it all in one trip
--i = 1
-- while i < 27 do
--      turtle.suck()
--      os.sleep(0.25)
--      i = (i + 1)
-- end



function moveUp()
        while turtle.detectUp() == true do
                turtle.digUp()
                os.sleep(0.5)
                --return to top and check again
        --else
                --turtle.up()
        end
end

function moveDown()
        while turtle.detectDown() == true do
                turtle.digDown()
                os.sleep(0.5)
                --return to top
        --else
                --turtle.down()
        end
end

function moveLeft() --not sure I like how this function works. the facing needs of a particular program may change
        turtle.turnLeft()
        moveForward()
end


--turn right then forward one. then dig up and down. then turn right again and dig up and down. then return to start. to turn twice then forward then left then forward then right.

function rightSide()
        turtle.turnRight()
        moveForward() --displaced one space right
        turtle.digUp()
        turtle.digDown()
        turtle.turnRight()
        moveForward() --now -1x, -1y
        turtle.digUp()
        turtle.digDown()
        turtle.turnRight()
        turtle.turnRight()
        moveForward() --now -1x, 0y
        turtle.turnLeft()
        moveForward()
        turtle.turnRight()--now facing the same was as when we started
end

function leftSide()
        turtle.turnLeft()
        moveForward() --displaced one space left
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        moveForward() --now +1x, +1y
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        moveForward() --now +1x, 0y
        turtle.turnRight()
        moveForward()
        turtle.turnLeft()--now facing the same was as when we started
end

--refuel module
--checks the turtle inventory for compatible fuel and uses it
function refuel()
        limit = turtle.getFuelLimit()
        level = turtle.getFuelLevel()
        room = (limit) - (level)
        i = 1
        while i < 17 do
                slot = i
                turtle.select(slot)
                if room > 5000 then
                                --i feel like something belongs here
                        turtle.refuel()
                        --i = (i + 1)
                        print(turtle.getFuelLevel)
                        --if i = 16 then
                end
                if i == 16 then
                        print(turtle.getFuelLevel())
                end
        i = (i + 1)
        end
end

function checkFuel()
        checkLevel = turtle.getFuelLevel()
        if checkLevel < 500 then
                refuel()
        end
        if checkLevel < 250 then
                rednet.send(ownerTabletId, turtleName.." is running low on fuel.") --ad message protocol?
                --location data when available.
        end
        --if no fuel found return to start? or notify PDA
end

function detectReturnBlockage()
    if turtle.detect() then
        waiting(timerId) = os.startTimer(20)
        os.sleep(2)
    end
    while turtle.detect() do
        os.sleep(1)
    end
    if os.pullEvent("waiting(timerId") then
        rednet.send(2, turtleName.."here. Something is blocking my return!")  --add coordinates
    end
end





function returnToSender()
        d=0
        turtle.turnRight()
        turtle.turnRight()--now facing 180
        while d < distance do
                turtle.forward() --use the simple forward to save time and not break any work happening behind the turtle
                detectReturnBlockage()
                turtle.forward() --it moves 2 spaces ahead so it needs to move 2 spaces back per distance counter
                detectReturnBlockage()
                d = d + 1
        end
end

--torch placement function
--designate slot for torches
--divide i or d by 7 or 8 and place each time it divides evenly or reset the counter when it hits 7
function torch()
        if torchCounter == 6 then
                turtle.select(1)
                turtle.placeDown()
                torchCounter = 1
        else
                torchCounter = torchCounter + 1
        end
end

function dig()
        refuel()
        i=1
        while i < distance do
                moveForward()
                moveForward()
                rightSide()
                leftSide()
                i = i+1
                torch()
                print(torchCounter)
                checkFuel()
        end

end

function workComplete()
        rednet.send(ownerTabletId, turtleName.." has completed its task. Ready for work!")
end

--lets do this
dig()
returnToSender()
workComplete()
--send my pda a message when work is done
--send one if contact is lost?

-- i want something to say go X distance and check for full inventory, if full go back to the chest adn dump the inv,
--then return to previous until total requested distance is completed and go back to start]]--

--this particular program should dig a 3x3 hole to whatever distance I desire and put the contents in a chest.