api.lua

local M = { }

M.LEFT = -1
M.RIGHT = 1
M.UP = 1
M.DOWN = -1
M.FRONT = 0

M.inspect = function(i)
    if i == M.FRONT then
        return turtle.inspect()
    elseif i == M.UP then
        return turtle.inspectUp()
    elseif i == M.DOWN then
        return turtle.inspectDown()
    end
end

M.checkBlacklist = function(fn, i)
    local exists, data = M.inspect(i)
    return exists, fn(data)
end

M.dig = function(i)
    if i == M.FRONT then
        return turtle.dig()
    elseif i == M.UP then
        return turtle.digUp()
    elseif i == M.DOWN then
        return turtle.digDown()
    end
end

M.attack = function(i)
    if i == M.FRONT then
        return turtle.attack()
    elseif i == M.UP then
        return turtle.attackUp()
    elseif i == M.DOWN then
        return turtle.attackDown()
    end
end

M.turn = function(i)
    if i == M.RIGHT then
        return turtle.turnRight()
    elseif i == M.LEFT then
        return turtle.turnLeft()
    end
end

M.move = function(i)
    if i == M.FRONT then
        return turtle.forward()
    elseif i == M.UP then
        return turtle.up()
    elseif i == M.DOWN then
        return turtle.down()
    end
end

M.freeSlots = function()
    local free = 0
    for n=1,16 do
        if turtle.getItemCount(n) == 0 then
            free = free + 1
        end
    end
    return free
end

M.place = function(i, slot)
    if slot then
        turtle.select(slot)
    end

    if i == M.FRONT then
        turtle.place()
    elseif i == M.UP then
        turtle.placeUp()
    elseif i == M.DOWN then
        turtle.placeDown()
    end
end

M.drop = function(i)
    if i == M.FRONT then
        turtle.drop()
    elseif i == M.UP then
        turtle.dropUp()
    elseif i == M.DOWN then
        turtle.dropDown()
    end
end

M.dropAll = function(i)
    for n=1,16 do
        turtle.select(n)
        M.drop(i)
    end
end

M.refuelAll = function()
    local any = false
    for n=1,16 do
        if turtle.refill() then
            any = true
        end
    end
    return any
end

M.select = turtle.select

return M