Miner

--SETTINGS DEFAULTS
local stop=false
local settings={}
settings["miningTime"]=3
settings["digDelay"]=1
settings["reserveFuelLevel"]=10
settings["chargeTime"]=30
settings["debug"]=false
local nextStep=nil

function checkStatus()
    if turtle.getItemCount(1)>0 then
        print("Ender Chest OK")
    else
        print("Please insert an Ender Chest into slot 1")
        while turtle.getItemCount(1)==0 do
            turtle.select(1)
            sleep(0.1)
        end
    end
    if turtle.getItemCount(2)>0 then
        print("Mining Well OK")
    else
        print("Please insert Mining Well into slot 2")
        while turtle.getItemCount(2)==0 do
            turtle.select(2)
            sleep(0.1)
        end
    end
    if turtle.getFuelLevel()~="unlimited" then
        if turtle.getItemCount(3)>0 then
            print("Charge Station OK")
        else
            print("Please insert Advanced Charge Station (or higher) into slot 3")
            while turtle.getItemCount(3)==0 do
                turtle.select(3)
                sleep(0.1)
            end
        end
    end
	if turtle.getItemCount(4)>0 then
		print("Solar Panel OK")
	else
		print("Please insert Ultimate Hybrid Solar Panel into slot 4")
		while turtle.getItemCount(4)==0 do
			turtle.select(4)
			sleep(0.1)
		end
	end
	if turtle.getItemCount(5)>0 then
		print("IC2 Consumer OK")
	else
		print("Please insert IC2 HV Consumer into slot 5")
		while turtle.getItemCount(5)==0 do
			turtle.select(5)
			sleep(0.1)
		end
	end
	if turtle.getItemCount(6)>0 then
		print("Energy Bridge OK")
	else
		print("Please insert Energy Bridge into slot 6")
		while turtle.getItemCount(6)==0 do
			turtle.select(6)
			sleep(0.1)
		end
	end
	if turtle.getItemCount(7)>0 then
		print("BC Producer OK")
	else
		print("Please insert BC Producer into slot 7")
		while turtle.getItemCount(7)==0 do
			turtle.select(7)
			sleep(0.1)
		end
	end
    if needsFuel() then
        if turtle.getItemCount(16)>0 then
            print("Fuel Level OK")
        else
            print("Please insert fuel in slot 16")
            while turtle.getItemCount(16)==0 do
                turtle.select(16)
                sleep(0.1)
            end
        end
    end

end

function needsFuel()
    local level=turtle.getFuelLevel()
    if level=="unlimited" or level>settings["reserveFuelLevel"] then
        return false
    else
        return true
    end
end

function moveForward()
    while turtle.detect() do
        turtle.dig()
        sleep(settings["digDelay"])
    end
    while turtle.forward()==false do
        turtle.dig()
	    sleep(settings["digDelay"])
	    turtle.attack()
	end
end

function topOff()
	if needsFuel()==true then
		setNextStep("chargeplacecharge")
	else
		setNextStep("placeminingwell")
	end
end

function placeCharge()
    turtle.select(4)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
	turtle.back()
	turtle.select(5)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
	turtle.up()
	turtle.select(6)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
	turtle.up()
	turtle.select(7)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
	turtle.up()
	turtle.select(3)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
end

function digCharge()
    turtle.select(3)
    turtle.digDown()
	turtle.down()
	turtle.select(7)
	turtle.digDown()
	turtle.down()
	turtle.select(6)
	turtle.digDown()
	turtle.down()
	turtle.select(5)
	turtle.digDown()
	turtle.forward()
	turtle.select(4)
	turtle.digDown()
end

function placeChest()
    turtle.select(1)
	turtle.back()
    while turtle.place()==false do
        turtle.attack()
        turtle.dig()
        sleep(settings["digDelay"])
    end
end

function digChest()
    turtle.select(1)
    if turtle.getItemCount(1) > 0 then
        turtle.drop()
    end
    turtle.dig()
	turtle.forward()
end

function placeMiningWell()
    turtle.select(2)
    while turtle.placeDown()==false do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
    end
end

function digMiningWell()
    turtle.select(2)
    if turtle.getItemCount(2) > 0 then
        turtle.drop()
    end
    turtle.digDown()
end

function setNextStep(next)
    if debug==true then
        print("Set next step "..next)
    end
    local file=nil
    while file==nil do
       file=fs.open("SnapBoxStepTracker","w")
    end
    file.write(next)
    file.close()
    nextStep=next
end

function getNextStep()
    local file=fs.open("SnapBoxStepTracker","r")
    if file==nil then
        setNextStep("topoff")
    else
        local returnValue=file.readAll()
        file.close()
        setNextStep(returnValue)
    end
end

function powerUp()
	turtle.select(4)
	turtle.digDown()
	turtle.down()
	turtle.select(5)
	turtle.digDown()
	turtle.down()
	turtle.select(6)
	turtle.digDown()
	turtle.down()
	turtle.select(7)
	turtle.digDown()
end

function powerDown()
	turtle.select(7)
	while turtle.placeDown()==false and turtle.getItemCount(7)>0 do
		turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
        sleep(0.1)
	end
	turtle.up()
	turtle.select(6)
	while turtle.placeDown()==false and turtle.getItemCount(6)>0 do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
        sleep(0.1)
	end
	turtle.up()
	turtle.select(5)
	while turtle.placeDown()==false and turtle.getItemCount(5)>0 do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
        sleep(0.1)
	end
	turtle.up()
	turtle.select(4)
	while turtle.placeDown()==false and turtle.getItemCount(4)>0 do
        turtle.digDown()
        sleep(settings["digDelay"])
        turtle.attackDown()
        sleep(0.1)
	end
end

function doNextStep()
--is there a better way to do this?
    if nextStep=="topoff" then
        topOff()
    elseif nextStep=="chargeplacecharge" then
		placeCharge()
        setNextStep("chargewaitforrefuel")
    elseif nextStep=="chargewaitforrefuel" then
        sleep(settings["chargeTime"])
        setNextStep("chargedigcharge")
    elseif nextStep=="chargedigcharge" then
        digCharge()
        setNextStep("placeminingwell")
    elseif nextStep=="placeminingwell" then
        placeMiningWell()
        setNextStep("placechest")
    elseif nextStep=="placechest" then
        placeChest()
        setNextStep("powerdown")
    elseif nextStep=="powerdown" then
        powerDown()
        setNextStep("powerup")
        sleep(settings["miningTime"])
    elseif nextStep=="powerup" then
        powerUp()
        setNextStep("digchest")
    elseif nextStep=="digchest" then
        digChest()
        setNextStep("digminingwell")
    elseif nextStep=="digminingwell" then
        digMiningWell()
        setNextStep("moveforward")
    elseif nextStep=="moveforward" then
        moveForward()
        setNextStep("topoff")
    else
        print("Unknown Step - Something Went Wrong. Giving Up "..nextStep)
		return
    end
end

function clearScreen()
    term.clear()
    term.setCursorPos(1,1)
end

--------MAIN PROGRAM
clearScreen()

--check to make sure it has all the items it needs
checkStatus()

--initial refuel
turtle.select(16)
turtle.refuel()
turtle.select(1)

nextStep="topoff"

--main loop
while stop==false do
    doNextStep()
    sleep(0.2)
end