--
-- fuel
--

function automobiles_lib.contains(table, val)
    for k,v in pairs(table) do
        if k == val then
            return v
        end
    end
    return false
end

function automobiles_lib.loadFuel(self, player_name, free, max_fuel)
    free = free or false

    local player = minetest.get_player_by_name(player_name)
    local inv = player:get_inventory()

    local itmstck=player:get_wielded_item()
    local item_name = ""
    if itmstck then item_name = itmstck:get_name() end

    local fuel = automobiles_lib.contains(automobiles_lib.fuel, item_name)
    if fuel or free == true then
        local stack = ItemStack(item_name .. " 1")
        if self._energy < max_fuel then
            if free == false then inv:remove_item("main", stack) end
            if fuel then
                self._energy = self._energy + fuel
            end
            if self._energy > max_fuel then self._energy = max_fuel end
            automobiles_lib.last_fuel_display = 0
            if self._energy == max_fuel then minetest.chat_send_player(player_name, "Full tank!") end
        end
        
        return true
    end

    return false
end