From 633b2b4376dc058277b21d8e24e577381bfea440 Mon Sep 17 00:00:00 2001
From: Samuele Lorefice <samuelelorefice98@gmail.com>
Date: Wed, 12 Mar 2025 01:55:26 +0100
Subject: [PATCH] Implemented convert array field

---
 BlendFile/Reader.cs | 34 +++++++++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/BlendFile/Reader.cs b/BlendFile/Reader.cs
index 8b1ad3c..1b75546 100644
--- a/BlendFile/Reader.cs
+++ b/BlendFile/Reader.cs
@@ -265,10 +265,38 @@ public class Reader {
         }
         return null;
     }
-        
-        throw new NotSupportedException($"Unknown type \"{attrib.OriginalType}\"");
-    }
 
+    private object? ConvertArrayField(FileBlock block, FieldInfo field, DNAArrayAttribute arrayAttribute, 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
+        IntPtr offset = arrayAttribute.MemoryOffset + startOffset;
+
+        //Grab data size, create a container and copy the data from the block to the container
+        int size = arrayAttribute.Size;
+        var data = new byte[size];
+        Array.Copy((byte[])block.Body, offset, data, 0, size);
+        
+        int itemLenght = arrayAttribute.OriginalType.ParseFSize();
+        //Gather Array type
+        var type = Type.GetType(arrayAttribute.OriginalType.ParseFType());
+        if (type == null) throw new NotSupportedException($"Type \"{arrayAttribute.UnderlyingType}\" is unknown");
+        //Create the array
+        var array = Array.CreateInstance(type, arrayAttribute.Size);
+        
+        for (int i = 0; i < arrayAttribute.Size; i += itemLenght) {
+            var itemData = new byte[itemLenght];
+            Array.Copy(data, i, itemData, 0, itemLenght);
+            object? cellData = ConvertFieldData(itemData, arrayAttribute.OriginalType);
+            if (cellData == null) throw new NotSupportedException($"Unknown type \"{arrayAttribute.OriginalType}\"");
+            var cellType = Type.GetType(arrayAttribute.OriginalType.ParseFType());
+            //check that cellData is the correct type
+            if (cellData.GetType() != cellType) throw new NotSupportedException($"Array type mismatch. Expected {cellType} got {cellData.GetType()}");
+            array.SetValue(cellData, i / itemLenght);
+        }
+
+        return array;
+    }
+    
     private object? ConvertListField(FileBlock block, FieldInfo field, DNAListAttribute attrib, IntPtr startOffset) {
         IntPtr countOffset = attrib.CountMemoryOffset + startOffset;
         IntPtr ptrOffset = attrib.PtrMemoryOffset + startOffset;