MineCompare

--TODO continue after chunk reload

function printUsage()
    print( "Usage:" )
    print( "Mine <forward> <right> <down>" )
end

tArgs = { ... }
if #tArgs ~= 3 then
    printUsage()
    return
elseif tonumber(tArgs[1]) == nil or tonumber(tArgs[2]) == nil or tonumber(tArgs[3]) == nil then
    printUsage()
    return
end

dropped = 0
attacked = 0
turn = 0
mined = 0
deep = 3
compared = 0 --added
slot = 5 -- was 1
turtle.select(slot)
A = tonumber(tArgs[1])
B = tonumber(tArgs[2])
C = tonumber(tArgs[3])

if A < 1 or A > 256 then
    print("forward must be between 1 and 256")
    error()
elseif B < 1 or B > 256 then
    print("right must be between 1 and 256")
    error()
elseif C < 1 or C > 256 then
    print("down must be between 1 and 256")
    error()
end

forward = A - 1
right = B - 1
down = math.floor(C / 3) - 1
downRemaining = math.fmod(C,3)

if down < 0 then
    down = 0
    downRemaining = 0
end

if C < 3 then
    oneLayer = 0
else
    oneLayer = C - 3
end

function fuel()
    fuelNeeded = (A * B - 1) * math.ceil(C / 3) + oneLayer
    fuelLevel = turtle.getFuelLevel()
    fuelDifference = fuelNeeded - fuelLevel
    fuelCoal = math.ceil(fuelDifference / 80)
    if fuelLevel >= fuelNeeded then
        print("*Fuel usage: ".. fuelNeeded .." out of ".. fuelLevel .."")
        print("*Enough fuel to proceed")
    else
        print("*Need ".. fuelDifference .." more fuel (".. fuelCoal .." Coal)")
        while fuelNeeded > fuelLevel do
            C = C - 1
            if C < 3 then
                oneLayer = 0
            else
                oneLayer = C - 3
            end
        fuelNeeded = (A * B - 1) * math.ceil(C / 3) + oneLayer
        end
        print("*Max area with current fuel: ".. A .." ".. B .." ".. C .."")
        print("*Shutting Down...")
        error()
    end
end

fuel()
print("'Put an enderchest in slot 1'")
print("'put compare blocks in slot 2/3/4") --added
print("'Turtle will mine forward, right, down'")
print("'Type in anything to start'")

io.read()

function compareUp() --added
    for ore=2, 4 do
        turtle.select(ore)
        if turtle.compareUp() then
            compared = compared + 1
            return true
        end
    end
    return false
end

function compareDown() --added
    for ore=2, 4 do
        turtle.select(ore)
        if turtle.compareDown() then
            compared = compared + 1
            return true
        end
    end
    return false
end

function full()
    if turtle.getItemCount(16) > 0 then
        dropOff()
    end
end

function dropOff()
    turtle.select(1)
    while turtle.placeUp() == false do
        if turtle.digUp() == false then
            turtle.attackUp()
        end
    end
    slot = 5
    for e=1, 12 do
        turtle.select(slot)
        turtle.dropUp()
        slot = slot + 1
    end
    turtle.select(1)
    turtle.digUp()
    dropped = dropped + 1
end

function mine()
    full()
    while turtle.forward() == false do
        if turtle.dig() == false then
            turtle.attack()
            mined = mined - 1
            attacked = attacked + 1
        end
        mined = mined + 1
    end

    full()
    if not compareDown() then --added
        if turtle.digDown() then
            mined = mined + 1
        end
    end
    full()
    if not compareUp() then --added
        if turtle.digUp() then
            mined = mined + 1
        end
    end
end

function line()
    for x=1, forward do
        mine()
    end
end

function square()
    for y=1, right do
        line()
        if turn == 0 then
            turtle.turnRight()
            mine()
            turtle.turnRight()
            turn = turn + 1
        else
            turtle.turnLeft()
            mine()
            turtle.turnLeft()
            turn = turn - 1
        end
    end
    line()
end

function cube()
    full()
    if not compareDown() then --added
        if turtle.digDown() then
            mined = mined + 1
        end
    end
    full()
    if not compareUp() then --added
        if turtle.digUp() then
            mined = mined + 1
        end
    end

    square()
    for z=1, down do
        digCube()
    end
    if downRemaining ~= 0 then
        deep = downRemaining
        digCube()
    end
end

function digCube()
    for d=1, deep do
        while turtle.down() == false do
            if turtle.digDown() == false then
                turtle.attackDown()
                mined = mined - 1
                attacked = attacked + 1
            end
            mined = mined + 1
        end
    end
    full()
    if not compareDown() then --added
        if turtle.digDown() then
            mined = mined + 1
        end
    end
    turtle.turnRight()
    turtle.turnRight()
    square()
end

cube()
dropOff()
print ("Mined ".. mined .." blocks")
print ("Attacked ".. attacked .." times")
print ("Dropped off ".. dropped .." times")
print ("Found ".. compared .." special ores")