Event Flag Reference Implementation C#

// Replace calls to dsInterface with your own library

private const int eventFlagPtr = 0x137D7D4;

private static Dictionary<string, int> eventFlagGroups = new Dictionary<string, int>()
{
    {"0", 0x00000},
    {"1", 0x00500},
    {"5", 0x05F00},
    {"6", 0x0B900},
    {"7", 0x11300},
};

private static Dictionary<string, int> eventFlagAreas = new Dictionary<string, int>()
{
    {"000", 00},
    {"100", 01},
    {"101", 02},
    {"102", 03},
    {"110", 04},
    {"120", 05},
    {"121", 06},
    {"130", 07},
    {"131", 08},
    {"132", 09},
    {"140", 10},
    {"141", 11},
    {"150", 12},
    {"151", 13},
    {"160", 14},
    {"170", 15},
    {"180", 16},
    {"181", 17},
};

private bool getEventFlagAddress(int ID, out int address, out uint mask)
{
    string idString = ID.ToString("D8");
    if (idString.Length == 8)
    {
        string group = idString.Substring(0, 1);
        string area = idString.Substring(1, 3);
        int section = Int32.Parse(idString.Substring(4, 1));
        int number = Int32.Parse(idString.Substring(5, 3));

        if (eventFlagGroups.ContainsKey(group) && eventFlagAreas.ContainsKey(area))
        {
            int offset = eventFlagGroups[group];
            offset += eventFlagAreas[area] * 0x500;
            offset += section * 128;
            offset += (number - (number % 32)) / 8;

            address = dsInterface.ReadInt32(eventFlagPtr);
            address = dsInterface.ReadInt32(address);
            address += offset;

            mask = 0x80000000 >> (number % 32);
            return true;
        }
    }

    address = 0;
    mask = 0;
    return false;
}

public bool ReadEventFlag(int ID)
{
    if (getEventFlagAddress(ID, out int address, out uint mask))
    {
        uint flags = dsInterface.ReadUInt32(address);
        return (flags & mask) != 0;
    }
    else
        throw new ArgumentException("Unknown event flag ID: " + ID);
}

public void WriteEventFlag(int ID, bool value)
{
    if (getEventFlagAddress(ID, out int address, out uint mask))
    {
        uint flags = dsInterface.ReadUInt32(address);
        if (value)
            flags |= mask;
        else
            flags &= ~mask;
        dsInterface.WriteUInt32(address, flags);
    }
    else
        throw new ArgumentException("Unknown event flag ID: " + ID);
}