Added pointers and list handling in reader

BlendFile/Reader.cs

@@ -1,6 +1,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Text;
+using CodeGenerator;
 using Kaitai;
 using static Kaitai.BlendFile;
 
@@ -102,17 +103,40 @@ public class Reader {
                 blockOffset += t.GetCustomAttribute<DNAClassAttribute>()!.Size;
             }
         }
-        foreach (var obj in objects) {
+        foreach (var obj in objects) { // for each converted object
+            // get the fields of the object
             FieldInfo[] fieldInfo = obj.Value.GetType().GetFields();
+            // get all fields that are pointers
             var list = fieldInfo.Where(fldInfo => fldInfo.GetCustomAttribute<DNAFieldAttribute>()!.IsPointer).ToList();
 
+            // for each pointer field
             foreach (var f in list) {
+                // get the pointer value
                 var addr = GetBlockFieldDataOffset(obj.Key.Item1, f.GetCustomAttribute<DNAFieldAttribute>()!.OriginalIndex,
                     fieldInfo);
+                // get the object that the pointer is pointing to if we've already converted it
                 var newobj = objects.GetValueOrDefault((addr, f.FieldType));
-                if (newobj != null) f.SetValue(obj.Value, newobj);
+                if (newobj != null)
+                    f.SetValue(obj.Value, newobj);
+                else // if we haven't converted the object yet, we need to convert it now
+                {
+                    newobj = ActivateInstance(f.FieldType);
+                    if (newobj != null)
+                    {
+                        FillObject(addr, ref newobj, f.FieldType.GetFields());
+                        f.SetValue(obj.Value, newobj);
+                        Objects.Add((addr, f.FieldType), newobj);
+                    } // should never happen
+                    else throw new NotSupportedException($"Type \"{f.FieldType}\" is unknown");
+                }
             }
         }
+        
+        foreach(var ptr in pointers) {
+            var obj = objects.GetValueOrDefault((ptr.Key, typeof(object)));
+            if (obj == null) continue;
+            InstantiatedObjects.Add(ptr.Key, obj);
+        }
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -179,6 +203,15 @@ public class Reader {
         objects.Add((block.MemAddr.ToPointer() + startOffset, obj!.GetType()), obj!);
     }
 
+    private void FillObject(IntPtr ptr, ref object? obj, FieldInfo[] fieldMetadata)
+    {
+        var block = GetBlock(ptr.ToInt64());
+        if (block == null) throw new($"Block for pointer {ptr.ToInt64():X} not found");
+        
+        var blockOffset = ptr.ToInt64() - block.MemAddr.ToPointer();
+        FillObject(block, ref obj, fieldMetadata, new IntPtr(blockOffset));
+    }
+
     private object? ConvertNormalField(FileBlock block, DNAFieldAttribute attrib, IntPtr startOffset) {
         //Calculate the offset from where the data of the field starts.
         //Because the order of the fields is not guaranteed we need to compute it each time
@@ -219,11 +252,50 @@ public class Reader {
         throw new NotSupportedException($"Unknown type \"{attrib.OriginalType}\"");
     }
 
-    private object? ConvertListField(FileBlock block, FieldInfo field, DNAListAttribute attrib, IntPtr startOffset) {/*
-        IntPtr offset = attrib.MemoryOffset + startOffset;
-        int size = Array.Copy((byte[])block.Body, startOffset+attrib.)
-        var data = new byte[]*/
-        return null;
+    private object? ConvertListField(FileBlock block, FieldInfo field, DNAListAttribute attrib, IntPtr startOffset) {
+        IntPtr countOffset = attrib.CountMemoryOffset + startOffset;
+        IntPtr ptrOffset = attrib.PtrMemoryOffset + startOffset;
+
+        var countLen = attrib.CountFieldName.ParseFSize();
+        var countData = new byte[countLen];
+        Array.Copy((byte[])block.Body, countOffset, countData, 0, countLen);
+        var tmpCount = ConvertFieldData(countData, attrib.CountFieldName);
+        int count;
+
+        switch (tmpCount)
+        {
+            case int i:
+                count = i;
+                break;
+            case short s:
+                count = s;
+                break;
+            default:
+                throw new NotSupportedException($"Unknown type \"{attrib.CountFieldName}\"");
+        }
+        
+        List<Object?> objList = new();
+        
+        for(IntPtr ptr = ptrOffset; ptr < ptrOffset + count * sizeof(Int64); ptr += sizeof(Int64)) {
+            var data = new byte[sizeof(Int64)];
+            Array.Copy((byte[])block.Body, ptr, data, 0, sizeof(Int64));
+            IntPtr memAddr = new IntPtr(BitConverter.ToInt64(data, 0));
+            
+            if (memAddr == IntPtr.Zero) {
+                objList.Add(null);
+                continue;
+            }
+
+            var obj = ActivateInstance(attrib.UnderlyingType);
+            if (obj == null) throw new NotSupportedException($"Type \"{attrib.UnderlyingType}\" is unknown");
+            
+            var fieldMetadata = obj.GetType().GetFields();
+            
+            FillObject(memAddr, ref obj, fieldMetadata);
+            objList.Add(obj);
+        }
+        
+        return objList;
     }
 
     private object? ConvertFieldData(byte[] data, string type) {