Added FSO.Files for use with the API server

Don't ask me. FreeSO is the prime example of dependency hell.

server/tso.files/Formats/IFF/Chunks/FAMI.cs

@@ -0,0 +1,102 @@
+using FSO.Files.Utils;
+using System.IO;
+
+namespace FSO.Files.Formats.IFF.Chunks
+{
+    /// <summary>
+    /// This class defines a single family in the neighbourhood, and various properties such as their 
+    /// budget and house assignment. These can be modified using GenericTS1Calls, but are mainly
+    /// defined within CAS.
+    /// </summary>
+    public class FAMI : IffChunk
+    {
+        public uint Version = 0x9;
+
+        public int HouseNumber;
+        //this is not a typical family number - it is unique between user created families, but -1 for townies.
+        //i believe it is an alternate family UID that basically runs on an auto increment to obtain its value.
+        //(in comparison with the ChunkID as family that is used ingame, which appears to fill spaces as they are left)
+        public int FamilyNumber;
+        public int Budget;
+        public int ValueInArch;
+        public int FamilyFriends;
+        public int Unknown; //19, 17 or 1? could be flags, (1, 16, 2) ... 0 for townies. 24 for CAS created (new 16+8?)
+                            //1: in house
+                            //2: unknown, but is set sometimes
+                            //4: unknown
+                            //8: user created?
+                            //16: in cas
+
+        public uint[] FamilyGUIDs = new uint[] { };
+
+        public uint[] RuntimeSubset = new uint[] { }; //the members of this family currently active. don't save!
+
+        public void SelectWholeFamily()
+        {
+            RuntimeSubset = FamilyGUIDs;
+        }
+
+        public void SelectOneMember(uint guid)
+        {
+            RuntimeSubset = new uint[] { guid };
+        }
+
+        /// <summary>
+        /// Reads a FAMI chunk from a stream.
+        /// </summary>
+        /// <param name="iff">An Iff instance.</param>
+        /// <param name="stream">A Stream object holding a OBJf chunk.</param>
+        public override void Read(IffFile iff, Stream stream)
+        {
+            using (var io = IoBuffer.FromStream(stream, ByteOrder.LITTLE_ENDIAN))
+            {
+                io.ReadUInt32(); //pad
+                Version = io.ReadUInt32(); //0x9 for latest game
+                string magic = io.ReadCString(4); //IMAF
+
+                HouseNumber = io.ReadInt32();
+                FamilyNumber = io.ReadInt32();
+                Budget = io.ReadInt32();
+                ValueInArch = io.ReadInt32();
+                FamilyFriends = io.ReadInt32();
+                Unknown = io.ReadInt32();
+                FamilyGUIDs = new uint[io.ReadInt32()];
+                for (int i=0; i<FamilyGUIDs.Length; i++)
+                {
+                    FamilyGUIDs[i] = io.ReadUInt32();
+                }
+                try
+                {
+                    for (int i = 0; i < 4; i++)
+                        io.ReadInt32();
+                } catch
+                {
+                    //for some reason FAMI "Default" only has 3 zeroes after it, but only if saved by base game.
+                }
+            }
+        }
+
+        public override bool Write(IffFile iff, Stream stream)
+        {
+            using (var io = IoWriter.FromStream(stream, ByteOrder.LITTLE_ENDIAN))
+            {
+                io.WriteInt32(0);
+                io.WriteUInt32(9);
+                io.WriteCString("IMAF", 4);
+                io.WriteInt32(HouseNumber);
+                io.WriteInt32(FamilyNumber);
+                io.WriteInt32(Budget);
+                io.WriteInt32(ValueInArch);
+                io.WriteInt32(FamilyFriends);
+                io.WriteInt32(Unknown);
+                io.WriteInt32(FamilyGUIDs.Length);
+                foreach (var guid in FamilyGUIDs)
+                    io.WriteUInt32(guid);
+
+                for (int i = 0; i < 4; i++)
+                    io.WriteInt32(0);
+            }
+            return true;
+        }
+    }
+}