wedge.lua

local partnerID=0
local debug=false

--Constants
local MY_ID              = os.getComputerID()
local CHARGE_LEVEL       = 500
local RESERVE_FUEL_LEVEL = 10
local TESSERACT          = 1
local CONDUIT            = 2
local DIG_DELAY          = 1
local FUEL               = 16
local FUEL_DELAY         = 10
local FUEL_RATION        = 4

function checkFuel()
    if(turtle.getFuelLevel() < RESERVE_FUEL_LEVEL) then
        print("\t->Fuel: FAILURE")
        print("\t\tOut of fuel, attempting refuel")
        refuel()
    end
end
function checkStatus()
    print("----------Checking Wedges's Schedule----------")

    if (turtle.getItemCount(TESSERACT) < 1) then
        print("\t->Tesseract: FAILURE")
        print("\t\tPlease insert Tesseract into slot 1")

        turtle.select(TESSERACT)
        while (turtle.getItemCount(TESSERACT) == 0) do
            sleep(1)
        end
    end
    print("\t->Tesseract: OK")

    if (turtle.getItemCount(CONDUIT) < 1) then

        print("\t->Conduit: FAILURE")
        print("\t\tPlease insert conduit into slot 2")

        turtle.select(CONDUIT)
        while (turtle.getItemCount(CONDUIT) == 0) do
            sleep(1)
        end
    end
    print("\t->Conduit: OK")

    checkFuel()
    print("-------------WEDGE READY TO ROLL-------------")

end

function pairWithBiggs()
    rednet.open("right")

    rednet.broadcast("Waiting to pair with partner")
    local id, msg, distance
    while (id==nil or id==MY_ID) do
        id, msg, distance = rednet.receive()
    end

    partnerID = id
    rednet.broadcast("Partner found")
end

function sendMessageToBiggs(message)
    rednet.send(partnerID,message)
end

function powerDown()

    turtle.select(TESSERACT)
    while(turtle.placeDown()==false)do
        turtle.digDown()
        sleep(DIG_DELAY)
    end

    turtle.forward()

    turtle.select(CONDUIT)
    while(turtle.placeDown()==false)do
        turtle.digDown()
        sleep(DIG_DELAY)
    end

    sendMessageToBiggs("powerdown")
end

function powerUp()

    turtle.select(CONDUIT)
    turtle.digDown()

    turtle.back()

    turtle.select(TESSERACT)
    turtle.digDown()

    sendMessageToBiggs("powerup")
end

function moveForward()

    while(turtle.forward()==false) do
        print("ERROR: Problem moving forward!")
    end

    sendMessageToBiggs("forward")
end

function refuel()
    prevSlot = turtle.getSelectedSlot()

    turtle.select(FUEL)
    while(turtle.refuel(FUEL_RATION) == false) do
        print("Error: Not enough fuel in slot 16 to refuel! Minimal 4")
        sleep(FUEL_DELAY)
    end

    turtle.select(prevSlot)
end

function waitForBiggs()

    local id, msg, distance
    while (id==nil or id==MY_ID or id ~= partnerID) do
        id, msg, distance = rednet.receive()
    end

    if (msg=="powerdown") then
        powerDown()
    elseif (msg=="powerup") then
        powerUp()
    elseif (msg=="forward") then
        moveForward()
    end
end

--Check Wedge has the items he needs
checkStatus()

--Wait for Biggs to be ready
pairWithBiggs()

while(true) do
    --Check we've got enough fuel
    checkFuel()
    --Wait for a command from Biggs
    waitForBiggs()
end