From c2ae0ceab39f34b24c0a48175890e5214bdbd6a7 Mon Sep 17 00:00:00 2001
From: HENDRIX-ZT2 <28632661+HENDRIX-ZT2@users.noreply.github.com>
Date: Wed, 20 Nov 2024 17:38:59 +0100
Subject: [PATCH] texel - calc aux hash for PC2

---
 __init__.py               |  2 +-
 __version__.py            |  6 +++---
 modules/formats/DDS.py    | 19 +++++++++++++++++++
 modules/formats/shared.py | 23 +++++++++++++++++++++++
 pyproject.toml            |  2 +-
 5 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/__init__.py b/__init__.py
index 04ec94555..667ae896e 100644
--- a/__init__.py
+++ b/__init__.py
@@ -3,7 +3,7 @@
     "name": "Frontier's Cobra Engine Formats",
     "author": "Harlequinz Ego, HENDRIX et al.",
     "blender": (4, 0, 0),
-    "version": (2024, 11, 18),
+    "version": (2024, 11, 19),
     "location": "File > Import-Export",
     "description": "Import-Export models, skeletons and animations",
     "warning": "",
diff --git a/__version__.py b/__version__.py
index 74e8213a0..d18780aed 100644
--- a/__version__.py
+++ b/__version__.py
@@ -1,4 +1,4 @@
 # this file is auto-generated by the pre-commit hook increment_version.py
-VERSION = "2024.11.18"
-COMMIT_HASH = "986059478"
-COMMIT_TIME = "Mon Nov 18 16:49:32 2024 +0100"
+VERSION = "2024.11.19"
+COMMIT_HASH = "deac0d086"
+COMMIT_TIME = "Tue Nov 19 17:06:41 2024 +0100"
diff --git a/modules/formats/DDS.py b/modules/formats/DDS.py
index 4f3374f22..bff193cb4 100644
--- a/modules/formats/DDS.py
+++ b/modules/formats/DDS.py
@@ -9,6 +9,7 @@
 from generated.formats.tex.compounds.TexHeader import TexHeader
 from generated.formats.tex.compounds.TexturestreamHeader import TexturestreamHeader
 from modules.formats.BaseFormat import MemStructLoader, BaseFile
+from modules.formats.shared import fnv64, encode_int64_base32
 
 from ovl_util import texconv, imarray
 
@@ -388,3 +389,21 @@ def get_tiles(self, size_info):
 class TexelLoader(BaseFile):
 	extension = ".texel"
 
+	def get_aux_path(self, aux_suffix):
+		"""Get path of aux file from ovl name and texel name"""
+		# Full Archive path:
+		#   Win64\ovldata\Content0\Worlds\DefaultSandbox.ovl
+		# File in Archive:
+		#   /zz159oeel9rhs8ex.texel
+		# File in tex header:
+		#   zz159oeel9rhs8ex
+		# Input Text
+		# text = b"defaultsandbox_/zz159oeel9rhs8ex_texel"
+		# Resulting Lookup:
+		#   XERY2OUE5ECDC_.aux
+		# Result:
+		# XERY2OUE5ECDC
+		assert not aux_suffix
+		text = f"{self.ovl.basename}_{self.name.replace('.', '_')}".lower().encode()
+		hash_value = fnv64(text)
+		return os.path.join(self.ovl.dir, f"{encode_int64_base32(hash_value)}_.aux")
diff --git a/modules/formats/shared.py b/modules/formats/shared.py
index cc70c378c..4555098d7 100644
--- a/modules/formats/shared.py
+++ b/modules/formats/shared.py
@@ -1,6 +1,7 @@
 import contextlib
 import functools
 import logging
+import os
 import struct
 import time
 
@@ -28,6 +29,28 @@ def djb2(s):
     return n & 0xFFFFFFFF
 
 
+def fnv64(data):
+    hash_ = 0xcbf29ce484222325
+    for b in data:
+        hash_ *= 0x100000001b3
+        hash_ &= 0xffffffffffffffff
+        hash_ ^= b
+    return hash_
+
+
+def encode_int64_base32(integer, charset="ABCDEFGHIJKLMNOPQRSTUVWXYZ012345"):
+    """Encodes a 64-bit integer into a base32 string with a custom charset."""
+    encoded = ""
+    while integer > 0:
+        index = integer & 0x1F
+        encoded += charset[index]
+        integer >>= 5
+
+    return encoded
+
+
+
+
 def fmt_hash(id_hash):
     return "".join([f"{b:02X}" for b in struct.pack("<I", id_hash)])
 
diff --git a/pyproject.toml b/pyproject.toml
index 4d67234ae..8f7722036 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cobra-tools"
-version = "2024.11.18"
+version = "2024.11.19"
 readme = "README.md"
 license = { file = "LICENSE" }
 requires-python = "==3.11.*"