diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 491fa76f..ab72653e 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -135,6 +135,8 @@
+
+
diff --git a/ArcFormats/HCSystem/ArcPAK.cs b/ArcFormats/HCSystem/ArcPAK.cs
new file mode 100644
index 00000000..aba9b96a
--- /dev/null
+++ b/ArcFormats/HCSystem/ArcPAK.cs
@@ -0,0 +1,127 @@
+//! \file ArcPAK.cs
+//! \date 2018 Jan 30
+//! \brief hcsystem resource archive.
+//
+// Copyright (C) 2018 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Text;
+using GameRes.Compression;
+using GameRes.Utility;
+
+namespace GameRes.Formats.HCSystem
+{
+ [Export(typeof(ArchiveFormat))]
+ public class PakOpener : ArchiveFormat
+ {
+ public override string Tag { get { return "PAK/HCSYSTEM"; } }
+ public override string Description { get { return "hcsystem engine resource archive"; } }
+ public override uint Signature { get { return 0x4B434150; } } // 'PACK'
+ public override bool IsHierarchic { get { return false; } }
+ public override bool CanWrite { get { return false; } }
+
+ public override ArcFile TryOpen (ArcView file)
+ {
+ int count = file.View.ReadInt32 (4);
+ if (!IsSaneCount (count))
+ return null;
+
+ bool is_encrypted = file.View.ReadByte (8) == 1;
+ bool is_unicode = false;
+ uint entry_size = 0x2C;
+ if (!CheckFirstOffset (file, count, entry_size, is_encrypted))
+ {
+ entry_size = 0x4C;
+ if (!CheckFirstOffset (file, count, entry_size, is_encrypted))
+ return null;
+ is_unicode = true;
+ }
+ var index = file.View.ReadBytes (0xC, entry_size * (uint)count);
+ if (is_encrypted)
+ DecryptIndex (index);
+
+ int name_size = is_unicode ? 0x40 : 0x20;
+ Func read_name;
+ if (is_unicode)
+ {
+ read_name = pos => {
+ int len = 0;
+ for (; len < name_size; len += 2)
+ {
+ if (index[pos+len] == 0 && index[pos+len+1] == 0)
+ break;
+ }
+ return Encoding.Unicode.GetString (index, pos, len);
+ };
+ }
+ else
+ read_name = pos => Binary.GetCString (index, pos, name_size);
+
+ int index_offset = 0;
+ var dir = new List (count);
+ for (int i = 0; i < count; ++i)
+ {
+ var name = read_name (index_offset);
+ index_offset += name_size;
+ var entry = FormatCatalog.Instance.Create (name);
+ entry.UnpackedSize = index.ToUInt32 (index_offset);
+ entry.Size = index.ToUInt32 (index_offset+4);
+ entry.Offset = index.ToUInt32 (index_offset+8);
+ entry.IsPacked = entry.Size != 0;
+ if (!entry.IsPacked)
+ entry.Size = entry.UnpackedSize;
+ if (!entry.CheckPlacement (file.MaxOffset))
+ return null;
+ dir.Add (entry);
+ index_offset += 0xC;
+ }
+ return new ArcFile (file, this, dir);
+ }
+
+ public override Stream OpenEntry (ArcFile arc, Entry entry)
+ {
+ var pent = entry as PackedEntry;
+ if (null == pent || !pent.IsPacked)
+ return base.OpenEntry (arc, entry);
+ var input = arc.File.CreateStream (entry.Offset, entry.Size);
+ return new LzssStream (input);
+ }
+
+ private bool CheckFirstOffset (ArcView file, int count, uint entry_size, bool is_encrypted)
+ {
+ uint data_offset = 0xC + entry_size * (uint)count;
+ uint first_offset = file.View.ReadUInt32 (0xC + entry_size - 4);
+ if (is_encrypted)
+ first_offset = (first_offset >> 4) & 0x0F0F0F0F | (first_offset << 4) & 0xF0F0F0F0;
+ return first_offset == data_offset;
+ }
+
+ void DecryptIndex (byte[] data)
+ {
+ for (int i = 0; i < data.Length; ++i)
+ data[i] = Binary.RotByteL (data[i], 4);
+ }
+ }
+}
diff --git a/ArcFormats/HCSystem/ImageOPF.cs b/ArcFormats/HCSystem/ImageOPF.cs
new file mode 100644
index 00000000..77ee36d3
--- /dev/null
+++ b/ArcFormats/HCSystem/ImageOPF.cs
@@ -0,0 +1,82 @@
+//! \file ImageOPF.cs
+//! \date 2018 Jan 30
+//! \brief hcsystem image format.
+//
+// Copyright (C) 2018 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+
+namespace GameRes.Formats.HCSystem
+{
+ internal class OpfMetaData : ImageMetaData
+ {
+ public int Stride;
+ public int DataOffset;
+ public int DataLength;
+ }
+
+ [Export(typeof(ImageFormat))]
+ public class OpfFormat : ImageFormat
+ {
+ public override string Tag { get { return "OPF"; } }
+ public override string Description { get { return "hcsystem engine image format"; } }
+ public override uint Signature { get { return 0x2046504F; } } // 'OPF '
+
+ public override ImageMetaData ReadMetaData (IBinaryStream file)
+ {
+ var header = file.ReadHeader (0x20);
+ var info = new OpfMetaData {
+ Width = header.ToUInt32 (4),
+ Height = header.ToUInt32 (8),
+ BPP = header.ToInt32 (0xC),
+ Stride = header.ToInt32 (0x10),
+ DataOffset = header.ToInt32 (0x14),
+ DataLength = header.ToInt32 (0x18),
+ };
+ if (info.BPP > 32 || info.DataOffset < 32)
+ return null;
+ return info;
+ }
+
+ public override ImageData Read (IBinaryStream file, ImageMetaData info)
+ {
+ var meta = (OpfMetaData)info;
+ file.Position = meta.DataOffset;
+ PixelFormat format;
+ switch (meta.BPP)
+ {
+ case 24: format = PixelFormats.Bgr24; break;
+ case 32: format = PixelFormats.Bgra32; break;
+ default: throw new InvalidFormatException ("Not supported OPF color depth.");
+ }
+ var pixels = file.ReadBytes (meta.DataLength);
+ return ImageData.Create (info, format, null, pixels, meta.Stride);
+ }
+
+ public override void Write (Stream file, ImageData image)
+ {
+ throw new System.NotImplementedException ("OpfFormat.Write not implemented");
+ }
+ }
+}