Simplest Miner

--Simplest miner v0.2
--17 Nov 27
--  pastebin get C93d6FX6 cm
--  delete cm
--************
--
--This mining program is filled with
--assumptions, generalizations, and
--bugs. I will update/maintain when
--possible. Feel free to suggest changes
--
--Written by : Keystyles
--************


--************
--Constants/Initialization
--************

----Orientation (start location = 0,0,0)
local currX = 0
local currY = 0
local currZ = 0

local width = 15

--***********
--Functions
--***********

function checkJunk(name) --check the data from the inspect and return true if it's junk; add "--" before both lines to remove an entry
    if name == "minecraft:stone" then
        return false
    elseif name == "minecraft:cobblestone" then
        return false
    elseif name == "minecraft:gravel" then
        return false
    elseif name == "minecraft:dirt" then
        return false
    elseif name == "minecraft:water" then
        return false
    elseif name == "minecraft:red_mushroom" then
        return false
    --elseif name == "minecraft:redstone_ore" then
    --  return false
    --elseif name == "minecraft:coal_ore" then
    --  return false
    elseif name == "ProjRed:Exploration:projectred.exploration.stone" then --Marble, need to find correct name*
        return false
    elseif name == "minecraft:sand" then
        return false
    elseif name == "minecraft:netherrack" then
        return false
    elseif name == "Botania:stone" then --this is all Botania stones; diorite, granite, etc
        return false
    elseif name == "Botania:mushroom" then  --this is all Botania stones; diorite, granite, etc
        return false
    elseif name == "chisel:limestone" then
        return false
    elseif name == "chisel:andesite" then
        return false
    elseif name == "chisel:diorite" then
        return false
    elseif name == "chisel:granite" then
        return false
    elseif name == "chisel:marble" then
        return false
    elseif name == "BiomesOPlenty:flowers" then
        return false
    elseif name == "BiomesOPlenty:flowers2" then
        return false
    else
        return true
    end
end

function turtleUp()
    x = turtle.up()
    while x == false do
        if turtle.digUp() then
        x = turtle.up()
        else
            if turtle.inspectUp() then
                if turtle.digUp() then
                    x=turtle.up()
                else
                    return false
                end
            else
                turtle.attackUp()
                x = turtle.up()
            end
        end
    end
    return true
end

function turtleDown()
    x = turtle.down()
    while x == false do
        if turtle.digDown() then
            x = turtle.down()
        else
            if turtle.inspectDown() then
                if turtle.digDown() then
                    x=turtle.down()
                else
                    return false
                end
            else
                turtle.attackDown()
                x = turtle.down()
            end
        end
    end
    return true
end

function turtleForward()
    x = turtle.forward()
    while x == false do
        if turtle.dig() then
        x = turtle.forward()
        else
            if turtle.inspect() then
                if turtle.dig() then
                    x=turtle.forward()
                else
                    return false
                end
            else
                turtle.attack()
                x = turtle.forward()
            end
        end
    end
    return true
end

function check()
    --Check down first, dig if necessary
    local success, data = turtle.inspectDown()
    if success then
        if checkJunk(data.name) then
            if data.name == "minecraft:flowing_lava" then
                turtle.select(1)
                turtle.placeDown()
                turtle.refuel()
            else
                turtle.digDown()
            end
        end
    end
    --Check up second, ...
    local success, data = turtle.inspectUp()
    if success then
        if checkJunk(data.name) then
            if data.name == "minecraft:flowing_lava" then
                turtle.select(1)
                turtle.placeUp()
                turtle.refuel()
            else
                turtle.digUp()
            end
        end
    end
end

function inventoryClear()
    for i=1, 16 do
        turtle.select(i)
    local data = turtle.getItemDetail()
        if data then
            if checkJunk(data.name) == false then
                turtle.drop()
        end
        end
    end
    turtle.select(1)
end

function inventoryFull()
    local count = 0
    for i = 1,16 do
        if turtle.getItemCount(i) > 0 then
            count = count + 1
        end
    end
    if count > 10 then
        return true
    else
        return false
    end
end

function inventoryUnload()
    for i = 2, 16 do
        turtle.select(i)
        turtle.dropUp()
    end
end

--************
--Main Loop
--************

----Fuel
turtle.select(1)
turtle.refuel()
turtle.select(2)
turtle.refuel()
print(turtle.getFuelLevel())

----Descend to bottom (bedrock +5)
while turtleDown() do
    currY = currY - 1
end

print(currY)

--Move up to avoid non-flat bedrock

--for i = 1, 4 do
--  turtleUp()
--  currY = currY + 1
--end


--Mining Loop
inventoryClear()
while currY < -2 do  --While you are in an acceptable mining range



    for i = 1, width do     --Mine one leg
        turtleForward()
        check()
    end

    inventoryClear()
    turtle.turnRight()      --Move right one
    turtleForward()
    currX = currX + 1
    check()
    turtle.turnRight()

    for i = 1, width do     --Mine return leg
        turtleForward()
        check()
    end

    if currX < width then   --Move left one, or return to 0,0 if complete
        inventoryClear()
        turtle.turnLeft()
        turtleForward()
        currX = currX + 1
        check()
        turtle.turnLeft()
    else
        turtle.turnRight()
        repeat
        turtleForward()
        currX = currX - 1
        until currX == 0
        turtle.turnRight()

        for i = 1, 3 do     --Move up three levels
            turtleUp()
            currY = currY + 1
        end

        inventoryClear()    --Dump junk
        if inventoryFull() then     --Return to starting level and empty cargo is necessary
            y = currY
            print(y)
            print(turtle.getFuelLevel())
            while currY < 0 do
                turtleUp()
                currY = currY + 1
            end
            inventoryUnload()
            while currY > y do
                turtleDown()
                currY = currY - 1
            end
        end
    end
end

inventoryClear()    --Dump junk
while currY < 0 do
    turtleUp()
    currY = currY + 1
end
inventoryUnload()
--************
--Rev history
--************
--  v0.1 - initial posting
--  v0.2 - fixed MANY issues, added inital fueling from slot2, increased inventoryClear frequency, added junk items, etc, etc, etc,