update handling of Lua assets

.gitattributes

@@ -1,6 +1,7 @@
 #
 # Auto Generated
 #
+
 # Other
 *.pdf filter=lfs diff=lfs merge=lfs -text
 # Unity Binary Assets
@@ -69,15 +70,18 @@
 *.wmv filter=lfs diff=lfs merge=lfs -text
 # Unity-Specific
 * text=auto
+
 # Some assets such as lighting data, nav meshes, etc will always be binary,
 # as will anything with [PreferBinarySerialization]
 # (Even if you force it to text mode serialization)
 # Meaning autoCRLF on git will fuck up your project.
 *.asset auto
 TimeManager.asset -text
+
 #
 # The following should be text to allow git merges
 #
+
 *.anim text
 *.controller text
 *.mat text
@@ -88,3 +92,5 @@ TimeManager.asset -text
 *.unity text
 *.preset text
 *.lfs_test filter=lfs diff=lfs merge=lfs -text
+
+

Editor/LuaFileAssetEditor.cs

@@ -0,0 +1,15 @@
+using Splashedit.RuntimeCode;
+using UnityEditor;
+using UnityEngine;
+
+[CustomEditor(typeof(LuaFile))]
+public class LuaScriptAssetEditor : Editor
+{
+    private TextAsset asset;
+
+    public override void OnInspectorGUI()
+    {
+        LuaFile luaScriptAsset = (LuaFile)target;
+        EditorGUILayout.TextArea(luaScriptAsset.LuaScript);
+    }
+}

Editor/LuaFileAssetEditor.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 32c0501d523345500be12e6e4214ec9d

Editor/LuaImporter.cs

@@ -0,0 +1,25 @@
+using UnityEngine;
+using System.IO;
+using UnityEditor;
+using UnityEditor.AssetImporters;
+using Splashedit.RuntimeCode;
+
+namespace SplashEdit.EditorCode
+{
+    [ScriptedImporter(1, "lua")]
+    class LuaImporter : ScriptedImporter
+    {
+        public override void OnImportAsset(AssetImportContext ctx)
+        {
+            var asset = ScriptableObject.CreateInstance<LuaFile>();
+            var luaCode = File.ReadAllText(ctx.assetPath);
+            asset.Init(luaCode);
+            asset.name = Path.GetFileName(ctx.assetPath);
+            var text = new TextAsset(asset.LuaScript);
+
+            ctx.AddObjectToAsset("Text", text);
+            ctx.AddObjectToAsset("Script", asset);
+            ctx.SetMainObject(text);
+        }
+    }
+}

Editor/LuaImporter.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: d364a1392e3bccd77aca824ac471f89c

README.md

@@ -42,8 +42,6 @@ Both Nicolas and Bandwidth have videos on setting up the PSX Dev Extension in Vi
 
 [Setting up a Scene in Unity 6 for SplashEdit.](https://youtu.be/1JJFYptDTk0)
 
-[Tips for Scene creation.](https://zhamul.itch.io/sauna/devlog/936240/using-psxsplashedit-to-craft-a-scene-for-playstation)
-
 ## PSX Components:
 
 There are currently four custom Unity components for exporting your scenes to the PS1. These include:

Runtime/LuaFile.cs

@@ -0,0 +1,15 @@
+using UnityEngine;
+
+namespace Splashedit.RuntimeCode
+{
+    public class LuaFile : ScriptableObject
+    {
+        [SerializeField] private string luaScript;
+        public string LuaScript => luaScript;
+
+        public void Init(string luaCode)
+        {
+            luaScript = luaCode;
+        }
+    }
+}

Runtime/LuaFile.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: e3b07239f3beb7a87ad987c3fedae9c1

Runtime/PSXMesh.cs

@@ -40,7 +40,6 @@ namespace SplashEdit.RuntimeCode
     {
         public List<Tri> Triangles;
 
-
         private static Vector3[] RecalculateSmoothNormals(Mesh mesh)
         {
             Vector3[] normals = new Vector3[mesh.vertexCount];
@@ -90,8 +89,6 @@ namespace SplashEdit.RuntimeCode
             // Get materials and mesh.
             Material[] materials = renderer.sharedMaterials;
             Mesh mesh = renderer.GetComponent<MeshFilter>().sharedMesh;
-            
-            bool uvWarning = false;
 
             // Iterate over each submesh.
             for (int submeshIndex = 0; submeshIndex < materials.Length; submeshIndex++)
@@ -150,22 +147,11 @@ namespace SplashEdit.RuntimeCode
                         (vid1, vid2) = (vid2, vid1);
                     }
 
-                    // Set uvWarning to true if uv cooordinates are outside the range [0, 1].
-                    if (uv[vid0].x < 0 || uv[vid0].y < 0 || uv[vid1].x < 0 || uv[vid1].y < 0 || uv[vid2].x < 0 || uv[vid2].y < 0)
-                        uvWarning = true;
-                    if (uv[vid0].x > 1 || uv[vid0].y > 1 || uv[vid1].x > 1 || uv[vid1].y > 1 || uv[vid2].x > 1 || uv[vid2].y > 1)
-                        uvWarning = true;
-
                     // Add the constructed triangle to the mesh.
                     psxMesh.Triangles.Add(new Tri { v0 = convertData(vid0), v1 = convertData(vid1), v2 = convertData(vid2), Texture = psxTexture });
                 }
             }
 
-            if(uvWarning)
-            {
-                Debug.LogWarning($"UV coordinates on mesh {mesh.name} are outside the range [0, 1]. Texture repeat DOES NOT WORK right now. You may have broken textures.");
-            }
-
             return psxMesh;
         }
 
@@ -197,9 +183,6 @@ namespace SplashEdit.RuntimeCode
                 nz = PSXTrig.ConvertCoordinateToPSX(normal.z),
 
                 // Map UV coordinates to a byte range after scaling based on texture dimensions.
-
-
-
                 u = (byte)Mathf.Clamp(uv.x * (width - 1), 0, 255),
                 v = (byte)Mathf.Clamp((1.0f - uv.y) * (height - 1), 0, 255),
 

Runtime/PSXObjectExporter.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using Splashedit.RuntimeCode;
 using UnityEngine;
 using UnityEngine.Serialization;
 
@@ -7,11 +8,14 @@ namespace SplashEdit.RuntimeCode
     [RequireComponent(typeof(Renderer))]
     public class PSXObjectExporter : MonoBehaviour
     {
+        public LuaFile LuaFile => luaFile;
+
         public List<PSXTexture2D> Textures { get; set; } = new List<PSXTexture2D>(); // Stores the converted PlayStation-style texture
-        public PSXMesh Mesh { get; set; } // Stores the converted PlayStation-style mesh
+        public PSXMesh Mesh { get; protected set; } // Stores the converted PlayStation-style mesh
         [Header("Export Settings")]
         [FormerlySerializedAs("BitDepth")]
         [SerializeField] private PSXBPP bitDepth = PSXBPP.TEX_8BIT; // Defines the bit depth of the texture (e.g., 4BPP, 8BPP)
+        [SerializeField] private LuaFile luaFile;
         [Header("Gizmo Settings")]
         [FormerlySerializedAs("PreviewNormals")]
         [SerializeField] private bool previewNormals = false;

Runtime/PSXSceneExporter.cs

@@ -2,6 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Text;
+using Splashedit.RuntimeCode;
 using UnityEditor;
 using UnityEngine;
 
@@ -89,6 +91,10 @@ namespace SplashEdit.RuntimeCode
             string path = EditorUtility.SaveFilePanel("Select Output File", "", "output", "bin");
             int totalFaces = 0;
 
+            // Lists for lua data offsets.
+            List<long> luaOffsetPlaceholderPositions = new List<long>();
+            List<long> luaDataOffsets = new List<long>();
+
             // Lists for mesh data offsets.
             List<long> meshOffsetPlaceholderPositions = new List<long>();
             List<long> meshDataOffsets = new List<long>();
@@ -106,6 +112,7 @@ namespace SplashEdit.RuntimeCode
             List<long> navmeshDataOffsets = new List<long>();
 
             int clutCount = 0;
+            List<LuaFile> luaFiles = new List<LuaFile>();
 
             // Cluts
             foreach (TextureAtlas atlas in _atlases)
@@ -119,12 +126,26 @@ namespace SplashEdit.RuntimeCode
                 }
             }
 
+            // Lua files 
+            foreach (PSXObjectExporter exporter in _exporters)
+            {
+                if (exporter.LuaFile != null)
+                {
+                    //if not contains
+                    if (!luaFiles.Contains(exporter.LuaFile))
+                    {
+                        luaFiles.Add(exporter.LuaFile);
+                    }
+                }
+            }
+
             using (BinaryWriter writer = new BinaryWriter(File.Open(path, FileMode.Create)))
             {
                 // Header
                 writer.Write('S'); // 1 byte                                                                    // 1
                 writer.Write('P'); // 1 byte                                                                    // 2 
                 writer.Write((ushort)1); // 2 bytes - version                                                   // 4
+                writer.Write((ushort)luaFiles.Count); // 2 bytes - padding                                                      // 6
                 writer.Write((ushort)_exporters.Length); // 2 bytes                                             // 6
                 writer.Write((ushort)_navmeshes.Length);                                                        // 8
                 writer.Write((ushort)_atlases.Length); // 2 bytes                                               // 10
@@ -140,6 +161,16 @@ namespace SplashEdit.RuntimeCode
                 writer.Write((ushort)PSXTrig.ConvertCoordinateToPSX(_playerHeight, GTEScaling));                // 26
 
                 writer.Write((ushort)0);
+                writer.Write((ushort)0);
+
+                // Lua file section
+                foreach (LuaFile luaFile in luaFiles)
+                {
+                    // Write placeholder for lua file data offset and record its position.
+                    luaOffsetPlaceholderPositions.Add(writer.BaseStream.Position);
+                    writer.Write((int)0); // 4-byte placeholder for mesh data offset.
+                    writer.Write((uint)luaFile.LuaScript.Length);
+                }
 
                 // GameObject section (exporters)
                 foreach (PSXObjectExporter exporter in _exporters)
@@ -165,7 +196,15 @@ namespace SplashEdit.RuntimeCode
                     writer.Write((int)rotationMatrix[2, 2]);
 
                     writer.Write((ushort)exporter.Mesh.Triangles.Count);
-                    writer.Write((ushort)0);
+                    if (exporter.LuaFile != null)
+                    {
+                        int index = luaFiles.IndexOf(exporter.LuaFile);
+                        writer.Write((short)index);
+                    }
+                    else
+                    {
+                        writer.Write((short)-1);
+                    }
                 }
 
                 // Navmesh metadata section
@@ -211,6 +250,17 @@ namespace SplashEdit.RuntimeCode
 
                 // Start of data section
 
+                // Lua data section: Write lua file data for each exporter.
+                foreach (LuaFile luaFile in luaFiles)
+                {
+                    AlignToFourBytes(writer);
+                    // Record the current offset for this lua file's data.
+                    long luaDataOffset = writer.BaseStream.Position;
+                    luaDataOffsets.Add(luaDataOffset);
+
+                    writer.Write(Encoding.UTF8.GetBytes(luaFile.LuaScript));
+                }
+
                 // Mesh data section: Write mesh data for each exporter.
                 foreach (PSXObjectExporter exporter in _exporters)
                 {
@@ -343,6 +393,20 @@ namespace SplashEdit.RuntimeCode
 
                 }
 
+                // Bacfill the lua data offsets into the metadata section.
+                if (luaOffsetPlaceholderPositions.Count == luaDataOffsets.Count)
+                {
+                    for (int i = 0; i < luaOffsetPlaceholderPositions.Count; i++)
+                    {
+                        writer.Seek((int)luaOffsetPlaceholderPositions[i], SeekOrigin.Begin);
+                        writer.Write((int)luaDataOffsets[i]);
+                    }
+                }
+                else
+                {
+                    Debug.LogError("Mismatch between metadata lua offset placeholders and lua data blocks!");
+                }
+
                 // Backfill the mesh data offsets into the metadata section.
                 if (meshOffsetPlaceholderPositions.Count == meshDataOffsets.Count)
                 {

Sample.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 03c1f3626c09eb44eb79759ab2675f9e
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Sample/Lua.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 83f98f1f40209b141a597a83c862a61f
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Sample/Lua/example.lua

@@ -0,0 +1,21 @@
+local dir = true
+local minY = -300
+local maxY = -25
+
+function doSomething(first, other)
+    local pos = first.position
+
+    if dir then
+        pos.y = pos.y + 10
+        if pos.y >= maxY then
+            dir = false
+        end
+    else
+        pos.y = pos.y - 10
+        if pos.y <= minY then
+            dir = true
+        end
+    end
+
+    first.position = pos
+end

Sample/Lua/example.lua.meta

@@ -0,0 +1,10 @@
+fileFormatVersion: 2
+guid: 2080a81a20451b74bb4fed47cde1eb64
+ScriptedImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 2
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
+  script: {fileID: 11500000, guid: d364a1392e3bccd77aca824ac471f89c, type: 3}

Sample/Material.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 98c8fecb427143042be70f00ac1ebb42
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Sample/Material/PSXDefault.mat

@@ -0,0 +1,137 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 8
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: PSXDefault
+  m_Shader: {fileID: 4800000, guid: 0ca6dca7396eb48e5849247ffd444914, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
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+  m_InvalidKeywords: []
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+  m_EnableInstancingVariants: 0
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+  stringTagMap:
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+  disabledShaderPasses:
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+  m_LockedProperties: 
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+    m_TexEnvs:
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+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _SpecGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_Lightmaps:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_LightmapsInd:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_ShadowMasks:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Ints: []
+    m_Floats:
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+    - _AlphaClip: 0
+    - _AlphaToMask: 0
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+    - _BumpScale: 1
+    - _ClearCoatMask: 0
+    - _ClearCoatSmoothness: 0
+    - _Cull: 2
+    - _Cutoff: 0.5
+    - _DetailAlbedoMapScale: 1
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _DstBlendAlpha: 0
+    - _EnvironmentReflections: 1
+    - _GlossMapScale: 0
+    - _Glossiness: 0
+    - _GlossyReflections: 0
+    - _Metallic: 0
+    - _OcclusionStrength: 1
+    - _Parallax: 0.005
+    - _QueueOffset: 0
+    - _ReceiveShadows: 1
+    - _Smoothness: 0.5
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _SrcBlendAlpha: 1
+    - _Surface: 0
+    - _WorkflowMode: 1
+    - _ZWrite: 1
+    m_Colors:
+    - _BaseColor: {r: 1, g: 1, b: 1, a: 1}
+    - _Color: {r: 1, g: 1, b: 1, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
+    - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
+  m_BuildTextureStacks: []
+  m_AllowLocking: 1
+--- !u!114 &7557462600926894941
+MonoBehaviour:
+  m_ObjectHideFlags: 11
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: d0353a89b1f911e48b9e16bdc9f2e058, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  version: 9

Sample/Material/PSXDefault.mat.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: ef90866ae3c8e3241995606c20a6f335
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Sample/Scene.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 6a2d025695ecb074a811681d20c569b0
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Sample/Scene/Demo.unity

@@ -0,0 +1,683 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!29 &1
+OcclusionCullingSettings:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_OcclusionBakeSettings:
+    smallestOccluder: 5
+    smallestHole: 0.25
+    backfaceThreshold: 100
+  m_SceneGUID: 00000000000000000000000000000000
+  m_OcclusionCullingData: {fileID: 0}
+--- !u!104 &2
+RenderSettings:
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+  serializedVersion: 10
+  m_Fog: 0
+  m_FogColor: {r: 0.5, g: 0.5, b: 0.5, a: 1}
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+  m_FogDensity: 0.01
+  m_LinearFogStart: 0
+  m_LinearFogEnd: 300
+  m_AmbientSkyColor: {r: 0.212, g: 0.227, b: 0.259, a: 1}
+  m_AmbientEquatorColor: {r: 0.114, g: 0.125, b: 0.133, a: 1}
+  m_AmbientGroundColor: {r: 0.047, g: 0.043, b: 0.035, a: 1}
+  m_AmbientIntensity: 1
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+  m_ReflectionIntensity: 1
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+  m_Sun: {fileID: 0}
+  m_UseRadianceAmbientProbe: 0
+--- !u!157 &3
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+  m_BakeOnSceneLoad: 0
+  m_GISettings:
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+    m_IndirectOutputScale: 1
+    m_AlbedoBoost: 1
+    m_EnvironmentLightingMode: 0
+    m_EnableBakedLightmaps: 1
+    m_EnableRealtimeLightmaps: 0
+  m_LightmapEditorSettings:
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+    m_Resolution: 2
+    m_BakeResolution: 40
+    m_AtlasSize: 1024
+    m_AO: 0
+    m_AOMaxDistance: 1
+    m_CompAOExponent: 1
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+    m_LightmapsBakeMode: 1
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+    m_PVRDenoiserTypeIndirect: 1
+    m_PVRDenoiserTypeAO: 1
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+    m_PVRFilterTypeIndirect: 0
+    m_PVRFilterTypeAO: 0
+    m_PVREnvironmentMIS: 1
+    m_PVRCulling: 1
+    m_PVRFilteringGaussRadiusDirect: 1
+    m_PVRFilteringGaussRadiusIndirect: 1
+    m_PVRFilteringGaussRadiusAO: 1
+    m_PVRFilteringAtrousPositionSigmaDirect: 0.5
+    m_PVRFilteringAtrousPositionSigmaIndirect: 2
+    m_PVRFilteringAtrousPositionSigmaAO: 1
+    m_ExportTrainingData: 0
+    m_TrainingDataDestination: TrainingData
+    m_LightProbeSampleCountMultiplier: 4
+  m_LightingDataAsset: {fileID: 20201, guid: 0000000000000000f000000000000000, type: 0}
+  m_LightingSettings: {fileID: 0}
+--- !u!196 &4
+NavMeshSettings:
+  serializedVersion: 2
+  m_ObjectHideFlags: 0
+  m_BuildSettings:
+    serializedVersion: 3
+    agentTypeID: 0
+    agentRadius: 0.5
+    agentHeight: 2
+    agentSlope: 45
+    agentClimb: 0.4
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+    maxJumpAcrossDistance: 0
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+    cellSize: 0.16666667
+    manualTileSize: 0
+    tileSize: 256
+    buildHeightMesh: 0
+    maxJobWorkers: 0
+    preserveTilesOutsideBounds: 0
+    debug:
+      m_Flags: 0
+  m_NavMeshData: {fileID: 0}
+--- !u!1 &416002693
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
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+  - component: {fileID: 416002696}
+  - component: {fileID: 416002695}
+  - component: {fileID: 416002694}
+  - component: {fileID: 416002698}
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Sample/Scene/Demo.unity.meta

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doc/splashbundle.md

@@ -10,24 +10,32 @@ All numeric values are stored in little‐endian format. All offsets are counted
 | ------ | ---- | ------ | ----------------------------------- |
 | 0x00   | 2    | char   | `'SP'` – File magic                 |
 | 0x02   | 2    | uint16 | Version number                      |
-| 0x04   | 2    | uint16 | Number of GameObjects               |
-| 0x06   | 2    | uint16 | Number of Navmeshes                 |
-| 0x08   | 2    | uint16 | Number of Texture Atlases           |
-| 0x0A   | 2    | uint16 | Number of CLUTs                     |
-| 0x0C   | 2    | uint16 | Player Start X                      |
-| 0x0E   | 2    | uint16 | Player Start Y                      |
-| 0x10   | 2    | uint16 | Player Start Z                      |
-| 0x12   | 2    | uint16 | Player Rotation X                   |
-| 0x14   | 2    | uint16 | Player Rotation Y                   |
-| 0x16   | 2    | uint16 | Player Rotation Z                   |
-| 0x18   | 2    | uint16 | Player Height                       |
-| 0x1A   | 2    | uint16 | Reserved (always 0)                 |
+| 0x04   | 2    | uint16 | Number of Lua Files                 |
+| 0x06   | 2    | uint16 | Number of GameObjects               |
+| 0x08   | 2    | uint16 | Number of Navmeshes                 |
+| 0x0A   | 2    | uint16 | Number of Texture Atlases           |
+| 0x0C   | 2    | uint16 | Number of CLUTs                     |
+| 0x0E   | 2    | uint16 | Player Start X (Fixed-point)        |
+| 0x10   | 2    | uint16 | Player Start Y (Fixed-point)        |
+| 0x12   | 2    | uint16 | Player Start Z (Fixed-point)        |
+| 0x14   | 2    | uint16 | Player Rotation X (Fixed-point)     |
+| 0x16   | 2    | uint16 | Player Rotation Y (Fixed-point)     |
+| 0x18   | 2    | uint16 | Player Rotation Z (Fixed-point)     |
+| 0x1A   | 2    | uint16 | Player Height (Fixed-point)         |
+| 0x1C   | 4    | uint32 | Reserved (always 0)                 |
 
 ---
 
 ## 2. Metadata Section
 
-### 2.1 GameObject Descriptors (56 bytes each)
+### 2.1 Lua File Descriptors (8 bytes each)
+
+| Offset (per entry) | Size | Type   | Description                       |
+| ------------------ | ---- | ------ | --------------------------------- |
+| 0x00               | 4    | uint32 | Lua File Data Offset              |
+| 0x04               | 4    | uint32 | Lua File Size                     |
+
+### 2.2 GameObject Descriptors (56 bytes each)
 
 | Offset (per entry) | Size | Type     | Description                       |
 | ------------------ | ---- | -------- | --------------------------------- |
@@ -37,21 +45,17 @@ All numeric values are stored in little‐endian format. All offsets are counted
 | 0x0C               | 4    | int32    | Z position (Fixed-point)          |
 | 0x10               | 36   | int32[9] | 3×3 Rotation Matrix (Fixed-point) |
 | 0x34               | 2    | uint16   | Triangle count                    |
-| 0x36               | 2    | int16    | Padding                           |
+| 0x36               | 2    | int16    | Lua File Index (-1 if none)       |
 
-> Mesh data for each GameObject is located at `meshDataOffset`.
-
-### 2.2 Navmesh Descriptors (8 bytes each)
+### 2.3 Navmesh Descriptors (8 bytes each)
 
 | Offset (per entry) | Size | Type   | Description                       |
 | ------------------ | ---- | ------ | --------------------------------- |
 | 0x00               | 4    | uint32 | Navmesh Data Offset               |
-| 0x04               | 2    | int16  | Triangle count                    |
-| 0x06               | 2    | int16  | Padding                           |
+| 0x04               | 2    | uint16 | Triangle count                    |
+| 0x06               | 2    | uint16 | Padding                           |
 
-> Each triangle in a navmesh is defined by 3 `int16` vertices (6 bytes per vertex).
-
-### 2.3 Texture Atlas Descriptors (12 bytes each)
+### 2.4 Texture Atlas Descriptors (12 bytes each)
 
 | Offset (per entry) | Size | Type   | Description                      |
 | ------------------ | ---- | ------ | -------------------------------- |
@@ -61,9 +65,7 @@ All numeric values are stored in little‐endian format. All offsets are counted
 | 0x08               | 2    | uint16 | Atlas Position X (VRAM origin)   |
 | 0x0A               | 2    | uint16 | Atlas Position Y (VRAM origin)   |
 
-> Pixel data is stored as `uint16[width * height]`.
-
-### 2.4 CLUT Descriptors (12 bytes each)
+### 2.5 CLUT Descriptors (12 bytes each)
 
 | Offset (per entry) | Size | Type   | Description                                           |
 | ------------------ | ---- | ------ | ----------------------------------------------------- |
@@ -73,20 +75,24 @@ All numeric values are stored in little‐endian format. All offsets are counted
 | 0x08               | 2    | uint16 | Palette entry count                                   |
 | 0x0A               | 2    | uint16 | Padding                                               |
 
-> CLUT pixel data is stored as `uint16[length]`.
-
 ---
 
 ## 3. Data Section
 
-### 3.1 Mesh Data Block (per GameObject)
+### 3.1 Lua Data Block
+
+Each Lua file is stored as raw bytes. The size of each Lua file is specified in the Lua File Descriptor.
+
+---
+
+### 3.2 Mesh Data Block (per GameObject)
 
 Each mesh is made of triangles:
 
 **Triangle Layout (52 bytes):**
 
 | Field               | Size | Description                                         |
-| -------------------|------|-----------------------------------------------------|
+| ------------------- |------|-----------------------------------------------------|
 | Vertex v0          | 6    | x, y, z (int16)                                     |
 | Vertex v1          | 6    | x, y, z (int16)                                     |
 | Vertex v2          | 6    | x, y, z (int16)                                     |
@@ -105,20 +111,27 @@ Each mesh is made of triangles:
 
 ---
 
-### 3.2 Navmesh Data Block
+### 3.3 Navmesh Data Block
 
 Each triangle is 3 vertices (`int16` x/y/z), total 18 bytes per triangle.
 
 ---
 
-### 3.3 Texture Atlas Data Block
+### 3.4 Texture Atlas Data Block
 
 Pixel data stored as `uint16[width * height]`.
 
 ---
 
-### 3.4 CLUT Data Block
+### 3.5 CLUT Data Block
 
 Pixel data stored as `uint16[length]`.
 
----
+---
+
+## Notes
+
+- All offsets are aligned to 4-byte boundaries.
+- Fixed-point values are scaled by the `GTEScaling` factor.
+- Lua file indices in GameObject descriptors are `-1` if no Lua file is associated with the object.
+- Navmesh triangles are stored as raw vertex data without additional attributes.