string keyword = "SYSTEMS";

Dictionary<string, string> ParseCustomData(IMyTerminalBlock block)
{
    var settings = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
    var lines = block.CustomData.Split('\n');

    foreach (string rawLine in lines)
    {
        string line = rawLine.Trim();
        if (string.IsNullOrWhiteSpace(line) || line.StartsWith("//") || line.StartsWith("[")) continue;

        int eq = line.IndexOf('=');
        if (eq < 0) continue;

        string key = line.Substring(0, eq).Trim();
        string value = line.Substring(eq + 1).Trim();

        if (!settings.ContainsKey(key))
            settings.Add(key, value);
    }

    return settings;
}

public void ProgressBar(IMyTextSurface display, string name, float percent, int scale, bool keep)
{
    int filled = (int)(percent / 100f * scale);
    display.WriteText(name + " [", keep);
    for (int i = 0; i < scale; i++)
        display.WriteText(i < filled ? "=" : " ", true);
    display.WriteText("] " + percent.ToString("0.0") + "%\n", true);
}

IMyProgrammableBlock me = null;
IMyBlockGroup blocks = null;

List<IMyBatteryBlock> batteries = new List<IMyBatteryBlock>();
List<IMyGasTank> gas_tanks = new List<IMyGasTank>();
List<IMyCargoContainer> cargo_containers = new List<IMyCargoContainer>();
List<IMyTextPanel> LCDs = new List<IMyTextPanel>();

public void Init() {
    blocks = GridTerminalSystem.GetBlockGroupWithName(keyword);

    if (blocks != null)
    {
        blocks.GetBlocksOfType(batteries);
        blocks.GetBlocksOfType(gas_tanks);
        blocks.GetBlocksOfType(cargo_containers);
        blocks.GetBlocksOfType(LCDs);
    }
}

public Program()
{
    Runtime.UpdateFrequency = UpdateFrequency.Update100;
    me = Me;
    Init();
}
//-------------------- MAIN ------------------------------------------------------------------------------------------------------------------------------------------
public void Main(string argument, UpdateType updateSource)
{
    if (argument == "refresh") Init();

    float power = 0;
    float max_power = 0;
    float oxygen = 0;
    int oxygen_count = 0;
    float hydrogen = 0;
    int hydrogen_count = 0;
    float cargo = 0;
    float max_cargo = 0;
    IMyInventory inv;

    foreach (var block in batteries) {
        max_power += block.MaxStoredPower;
        power += block.CurrentStoredPower;
    }
    foreach (var block in gas_tanks) {

        Echo(block.BlockDefinition.SubtypeName.ToLower());

        if (block.BlockDefinition.SubtypeName.ToLower().Contains("oxygen")) {
            oxygen_count++;
            oxygen += (float)block.FilledRatio;
        }
        if (block.BlockDefinition.SubtypeName.ToLower().Contains("hydrogen")) {
            hydrogen_count++;
            hydrogen += (float)block.FilledRatio;
        }
    }
    foreach (var block in cargo_containers) {
        inv = block.GetInventory();
        max_cargo += (float)inv.MaxVolume;
        cargo += (float)inv.CurrentVolume;
    }

    float power_percent = max_power > 0 ? (power / max_power) * 100f : 0f;
    float oxygen_percent    = oxygen_count     > 0 ? (oxygen    / oxygen_count)     * 100f : 0f;
    float hydrogen_percent = hydrogen_count > 0 ? (hydrogen / hydrogen_count) * 100f : 0f;
    float cargo_percent = max_cargo > 0 ? (cargo / max_cargo) * 100f : 0f;

    foreach (var panel in LCDs)
    {
        panel.ContentType = ContentType.TEXT_AND_IMAGE;
        panel.Font = "Monospace";
        panel.WriteText("", false); // clear

        ProgressBar(panel, "Battery", power_percent, 20, true);
        ProgressBar(panel, "Oxygen", oxygen_percent, 20, true);
        ProgressBar(panel, "Hydrogen", hydrogen_percent, 20, true);
        ProgressBar(panel, "Cargo", cargo_percent, 20, true);
    }
}