.gitignore

@@ -11,3 +11,8 @@ __pycache__
 /build/
 
 /docs/_build
+
+# envs
+
+/.env
+/.venv

blender_asset_tracer/blendfile/__init__.py

@@ -127,9 +127,7 @@ class BlendFile:
         self.blocks = []  # type: BFBList
         """BlendFileBlocks of this file, in disk order."""
 
-        self.code_index = collections.defaultdict(
-            list
-        )  # type: typing.Dict[bytes, BFBList]
+        self.code_index = collections.defaultdict(list)  # type: typing.Dict[bytes, BFBList]
         self.structs = []  # type: typing.List[dna.Struct]
         self.sdna_index_from_id = {}  # type: typing.Dict[bytes, int]
         self.block_from_addr = {}  # type: typing.Dict[int, BlendFileBlock]
@@ -352,9 +350,25 @@ class BlendFile:
                 else:
                     dna_size = dna_type.size * dna_name.array_size
 
-                field = dna.Field(dna_type, dna_name, dna_size, dna_offset)
-                dna_struct.append_field(field)
-                dna_offset += dna_size
+                if dna_name.name_only == b"bakes":
+                    array_count = 3  # Total elements in the array
+                    item_size = 48  # Size of each item in the array
+                    dna_size = (
+                        item_size * array_count
+                    )  # Total size occupied by the array
+
+                    # Create a single field for the entire array
+                    field = dna.Field(dna_type, dna_name, dna_size, dna_offset)
+                    dna_struct.append_field(field)
+                    dna_offset += (
+                        dna_size  # Increment offset by the total size of the array
+                    )
+
+                else:
+                    # For other fields, proceed as usual
+                    field = dna.Field(dna_type, dna_name, dna_size, dna_offset)
+                    dna_struct.append_field(field)
+                    dna_offset += dna_size
 
     def abspath(self, relpath: bpathlib.BlendPath) -> bpathlib.BlendPath:
         """Construct an absolute path from a blendfile-relative path."""
@@ -796,6 +810,29 @@ class BlendFileBlock:
                 continue
             yield dereferenced
 
+    def iter_bakes(self, array_size: int) -> typing.Iterator["BlendFileBlock"]:
+        """Iterate over an array of NodesModifierBake pointers with known size."""
+        path = (
+            b"bakes"  # Assuming 'bakes' is the DNA field name for the array of pointers
+        )
+        if array_size == 0:
+            return
+
+        array = self.get_pointer(path)
+        assert array and array.code == b"DATA", "Expected DATA block, got {}".format(
+            array.code.decode()
+        )
+
+        file_offset = array.file_offset
+        ps = self.bfile.header.pointer_size
+
+        for i in range(array_size):
+            address = self.bfile.read_pointer_at(file_offset + ps * i)
+            if address:
+                dereferenced = self.bfile.dereference_pointer(address)
+                if dereferenced:
+                    yield dereferenced
+
     def __getitem__(self, path: dna.FieldPath):
         return self.get(path)
 

blender_asset_tracer/trace/modifier_walkers.py

@@ -22,12 +22,18 @@
 The modifier_xxx() functions all yield result.BlockUsage objects for external
 files used by the modifiers.
 """
+
+import struct
 import logging
 import typing
+from blender_asset_tracer.blendfile import iterators
+from blender_asset_tracer.blendfile.dna import Struct
 
 from blender_asset_tracer import blendfile, bpathlib, cdefs
 from . import result
 
+import ctypes
+
 log = logging.getLogger(__name__)
 modifier_handlers = {}  # type: typing.Dict[int, typing.Callable]
 
@@ -317,3 +323,51 @@ def modifier_cloth(
     yield from _walk_point_cache(
         ctx, block_name, modifier.bfile, pointcache, cdefs.PTCACHE_EXT
     )
+
+
+def split_bytes_array(raw_data: bytes, item_size: int) -> typing.Iterator[bytes]:
+    for i in range(0, len(raw_data), item_size):
+        data_part = raw_data[i : i + item_size]
+        yield data_part
+
+
+def bytes_to_struct(data_bytes: bytes, struct_type: Struct):
+    """Convert raw bytes into a struct based on the provided Struct definition."""
+    struct_instance = {}
+
+    for field in struct_type.fields:
+        start = field.offset
+        end = start + field.size
+        field_data = data_bytes[start:end]
+
+        value = field_data.hex()
+
+        struct_instance[field.name.name_only] = value
+
+    return struct_instance
+
+
+@mod_handler(cdefs.eModifierType_Nodes)
+def modifier_nodes(
+    ctx: ModifierContext, modifier: blendfile.BlendFileBlock, block_name: bytes
+) -> typing.Iterator[result.BlockUsage]:
+    bake_directory = modifier.get_pointer(b"simulation_bake_directory")
+    # print(bake_directory)
+
+    bakes_ptr = modifier.get(b"bakes")
+    bakes_num = modifier.get(b"bakes_num")
+    bakes = modifier.get_pointer(b"bakes")
+    raw_bakes = bakes.raw_data()
+
+    dna_type = bakes.dna_type
+    print(list(bakes.values()))
+
+    bakes_split = split_bytes_array(raw_bakes, dna_type.size)
+
+    for bake_bytes in bakes_split:
+        bake_struct = bytes_to_struct(bake_bytes, dna_type)
+        print(bake_struct)
+
+        # yield bake_struct
+
+    quit()