movement test

DISTANCETOHOMEBASE = 0


function MoveDownwardByOne()
    if CheckRetreatParameters() or CheckForBedrockBeneath() then
        print("Critical Error")
        local x,y,z = gps.locate()
        SavedX = x
        SavedY = y
        SavedZ = z
        print("close To retreating")
        Retreat()
    end
    if turtle.getFuelLevel() < 20 then
        Refuel()
    end
    local existence = turtle.inspectDown()
    if existence then
        turtle.digDown()
    end
    turtle.down()
end

function CheckRetreatParameters()
    local lowFuel = LowFuel()
    local fullInventory = InventoryHasfreeSpace()
    if lowFuel then
        print("Fuel")
        return true
    end
    if fullInventory then
        print("Inventory")
        return true
    end
end

function CheckForBedrockBeneath()
    local success,data = turtle.inspectDown()
    if success then
        if data.name == "minecraft:bedrock" then
            return true
        else
            return false
        end
    else
        return false
    end
end

function LowFuel()
    local extraSafetyDistance = 10
    if DISTANCETOHOMEBASE < CalculateTotalFuel() + extraSafetyDistance then
        return false
    else if DISTANCETOHOMEBASE >= CalculateTotalFuel() + extraSafetyDistance then
        return true
    end
    end
end

function CalculateTotalFuel()
    local result = turtle.getFuelLevel() + turtle.getItemCount(1) * 80
    return result
end


function InventoryHasfreeSpace()
    local count = turtle.getItemCount(16)
    if count == 0 then
        return false
    else
        return true
    end
end

function CalculateHomebaseDistance(baseX,BaseY,BaseZ)
    local x,y,z = gps.locate()
    local result = CalculateTotalDistance(CalculateDistance(baseX,x),CalculateDistance(BaseY,y),CalculateDistance(BaseZ,z))
end

function init()

end
init()
MoveDownwardByOne()