using System;
using System.Threading.Tasks;
using System.Windows.Forms;
using RGiesecke.DllExport;
using System.Runtime.InteropServices;
using System.Threading;

namespace FMSelRS
{
static class Program
{
//Default main method was here but is not needed for this

private static sFMSelectorData FMSelData;
private static eFMSelReturn FMSelReturnValue = new eFMSelReturn();

[DllExport(CallingConvention=CallingConvention.Cdecl, ExportName="SelectFM")]
public static int SelectFM([MarshalAs(UnmanagedType.Struct)] ref sFMSelectorData data)
{
byte[] sName = new byte[256];
FMSelData = data;
Thread thd = new Thread(()=>
{
Form1 nForm = new Form1();
DialogResult dR = nForm.ShowDialog();

if (dR == DialogResult.OK)
{
string fol = nForm.getFMName;
sName = ASCIIEncoding.ASCII.GetBytes(fol);
FMSelReturnValue = eFMSelReturn.kSelFMRet_OK;
}
});

thd.SetApartmentState(ApartmentState.STA);
thd.Start();
thd.Join();

Marshal.Copy(sName, 0, FMSelData.sName, sName.Length);

return (int)FMSelReturnValue;
}

public enum eFMSelReturn
{
kSelFMRet_OK = 0, // run selected FM 'data->sName' (0-len string to run without an FM)
kSelFMRet_Cancel = -1, // cancel FM selection And start game As-Is (no FM Or If defined In cam_mod.ini use that)
kSelFMRet_ExitGame = 1 // abort And quit game
}

[StructLayout(LayoutKind.Sequential, Pack=4, CharSet = CharSet.Ansi)]
public struct sFMSelectorData
{
//sizeof(sFMSelectorData)
public int nStructSize;

//game version string as returned by AppName() (ie. in the form "Thief 2 Final 1.19")
public string sGameVersion;

//supplied initial FM root path (the FM Selector may change this)
public IntPtr sRootPath;
public int nMaxRootLen;

//buffer to copy the selected FM name
public IntPtr sName;
public int nMaxNameLen;

//set to non-zero when selector Is invoked after game exit (if requested during game start)
public int bExitedGame;

//FM selector should set this to non-zero if it wants to be invoked after game exits (only done for FMs)
public int bRunAfterGame;

//optional list of paths to exclude from mod_path/uber_mod_path in + separated format And Like the config
//vars, Or if "*" all Mod paths are excluded (leave buffer empty for no excludes)
//the specified exclude paths work as if they had a "*\" wildcard prefix
public IntPtr sModExcludePaths;
public int nMaxModExcludeLen;

public IntPtr sLanguage;
public int nLanguageLen;
public int bForceLanguage;
}
}
}

@snobel Yes. I was probably going to go with TFMM.dll. It only makes sense.

How have you identified which game has called the dll? data.sGameVersion is always Thief 2 1.24... even for T1.

I found that I could use System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName; to get the full path of the calling .exe as a string. Is that what you did your was it something else?

You said in the video that you scan the .mis files for a certain string to determine the game type. Did you find something foolproof? I initially did that for NDL. Mis files contain references to all things from the gamesys. However, an author can recreate a T1 archetype in a T2 gamesys, so for each game I had NDL search for 4 strings that, by default, are unique to each game. And then I found a T2 FM that had been ported directly from T1, thanks to NewDark, so NDL thought it was a T1 FM.

I decided to replace that with a search of the readme for certain strings (Thief 2, Thief: Gold etc).

If PatternExists(misBuf, New Byte() {&HDE, &HAD, &HBE, &HEF}) Then 'Valid Mission Files contain the byte pattern: DE AD BE EF (Dead Beef)
If PatternExists(misBuf, ASCII.GetBytes("HIT_EXPLOSION")) Then
mi.Game = Game.Thief2
ElseIf PatternExists(misBuf, ASCII.GetBytes("Electro Shock")) Then
mi.Game = Game.SystemShock2
Else
mi.Game = Game.Thief1
End If
End If

I use TDP, but keep up the good work.