Excavate3.lua

--[[
TO-DO:
- return back to chest
- up/down dig
- quarry(x,y,z)
- throw items
- print out location and reset monitor
- min fuel reserve level
--]]

--[[
local tArgs = { ... }
if #tArgs ~= 3 then
    print( "Usage: exc3 x y z" )
    return
end
--]]

local xPos = 0
local yPos = 0
local zPos = 0
local dir = 0
local fuelLevel = turtle.getFuelLevel()

local oldXPos = 0
local oldYPos = 0
local oldZPos = 0
local oldDir = 0


-- Movement - no fuel needed
function left()
    if turtle.turnLeft() then
        dir = dir + 1
        if dir == 4 then
            dir = 0
        end
        return true
    else
        return false
    end
end

function right()
    if turtle.turnRight() then
        dir = dir - 1
        if dir == -1 then
            dir = 3
        end
        return true
    else
        return false
    end
end

-- Movement - fuel needed

function moveDown()
    turtle.digDown()
    if turtle.down() then
        yPos = yPos+1
        return true
    else
        return false
    end
end

function moveUp()
    turtle.digUp()
    if turtle.up() then
        yPos = yPos-1
        return true
    else
        return false
    end
end


function moveForward()
    turtle.dig()
    if turtle.forward() then
        if dir == 0 then
            xPos=xPos+1
        elseif dir == 1 then
            zPos=zPos+1
        elseif dir == 2 then
            xPos=xPos-1
        elseif dir == 3 then
            zPos=zPos-1
        end
    end
end

function rotate(d)
    while dir ~= d do
        right()
    end

end

function goTo(x,y,z,d) -- x,y,z,direction
    if fuel() == true then -- fueling
        -- X coordinate
        if xPos > x then
            rotate(2)
        elseif xPos < x then
            rotate(0)
        end
        while xPos ~= x do
            moveForward()
        end
        -- Z coordinate
        if zPos > z then
            rotate(3)
        elseif zPos < z then
            rotate(1)
        end
        while zPos ~= z do
            moveForward()
        end
        -- Y coordinate
        if yPos < y then
            while yPos ~= y do
                moveDown()
            end
        elseif yPos > y then
            while yPos ~= y do
                moveUp()
            end
        end
        print("went")
    end
end


-- Fueling
function fuel()
    local hasFuel = false
    if turtle.getFuelLevel() < 50 then
        for i = 1, 16 do -- loop through the slots
            turtle.select(i) -- change to the slot
            if turtle.refuel(0) then -- if it's valid fuel
                hasFuel = true
                break
            end
        end
        if hasFuel == true then
            for j=1,turtle.getItemCount() do
                if turtle.getFuelLevel() ~= turtle.getFuelLimit() then
                    turtle.refuel(1)
                end
            end
        else
            print("no fuel - going back")
            --goBack()
        end
    else
        hasFuel = true
    end
    return hasFuel
end




function goBack()
    oldXPos = xPos
    oldYPos = yPos
    oldZPos = zPos
    oldDir = dir
end


function test()
    shell.run("label","set","Zmiskol")
    term.clear()
    print("Start Fuel Level: ",fuelLevel)

    goTo(0,2,0,0)
    sleep(5)
    goTo(2,0,0,2)
end

test()