[CatSystem2] 封包支持

2026-07-08 01:30:18 +08:00 · 2026-04-28 23:13:48 +08:00
parent d487074bbe
commit be3bf61c82
3 changed files with 284 additions and 0 deletions
--- a/ArcFormats/CatSystem/ArcPidaV1.cs
+++ b/ArcFormats/CatSystem/ArcPidaV1.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace GameRes.Formats.CatSystem
+{
+    internal class PidaEntryV1 : Entry
+    {
+        public ushort Width;
+        public ushort Height;
+        public short OffsetX;
+        public short OffsetY;
+    }
+
+    [Export(typeof(ArchiveFormat))]
+    public class PidaOpenerV1 : ArchiveFormat
+    {
+        public override string Tag => "PidaV1";
+        public override string Description => "CatSystem2 engine multi-image";
+        public override uint Signature => 0x6DF22373u;
+        public override bool IsHierarchic => true;
+        public override bool CanWrite => false;
+
+        public PidaOpenerV1()
+        {
+            ContainedFormats = new[] { "PNG" };
+        }
+
+        public override ArcFile TryOpen(ArcView file)
+        {
+            using (ArcViewStream stream = file.CreateStream())
+            {
+                using (BinaryReader br = new BinaryReader(stream, Encoding.Unicode, true))
+                {
+                    stream.Position = 8L;
+
+                    List<PidaEntryV1> entries = new List<PidaEntryV1>();
+                    {
+                        string fn = br.ReadString();
+                        while (!string.IsNullOrEmpty(fn))
+                        {
+                            PidaEntryV1 e = Create<PidaEntryV1>(fn);
+                            e.Offset = br.ReadUInt32();
+                            e.Size = 0u;
+
+                            e.Width = br.ReadUInt16();
+                            e.Height = br.ReadUInt16();
+                            e.OffsetX = br.ReadInt16();
+                            e.OffsetY = br.ReadInt16();
+
+                            e.Type = "image";
+                            entries.Add(e);
+
+                            fn = br.ReadString();
+                        }
+                    }
+
+                    if (entries.Any())
+                    {
+                        long imageDataOffset = stream.Position;
+
+                        foreach (PidaEntryV1 e in entries)
+                        {
+                            e.Offset += imageDataOffset;
+                        }
+                        {
+                            PidaEntryV1 last = entries.Last();
+                            last.Size = (uint)(stream.Length - last.Offset);
+                        }
+                        for (int i = 0; i < entries.Count - 1; ++i)
+                        {
+                            PidaEntryV1 curr = entries[i + 0];
+                            PidaEntryV1 next = entries[i + 1];
+                            curr.Size = (uint)(next.Offset - curr.Offset);
+                        }
+                    }
+
+                    return new ArcFile(file, this, entries.Cast<Entry>().ToList());
+                } 
+            }
+        }
+    }
+}