// Model loader for MDL files. Reference Valve's studiohdr_t struct definition for the most part.
public DataStructures.Models.Model LoadMDL(IFile file, ModelLoadItems loadItems)
{
using (var fs = new MemoryStream(file.ReadAll()))
{
using(var br = new BinaryReader(fs))
{
return ReadModel(br, file, loadItems);
}
}
}
// Model loader for MDL files. Reference Valve's studiohdr_t struct definition for the most part.
public DataStructures.Models.Model LoadMDL(IFile file, ModelLoadItems loadItems)
{
using (var fs = file.Open())
{
using(var br = new BinaryReader(fs))
{
return ReadModel(br, file, loadItems);
}
}
}
private static DataStructures.Models.Model ReadModel(BinaryReader br, IFile file, ModelLoadItems loadItems)
{
// int id - Not really an int. This is a magic string, either "IDST" or "IDSQ".
var magicString = br.ReadFixedLengthString(Encoding.UTF8, 4);
if (magicString != MagicStringIDST && magicString != MagicStringIDSQ)
{
throw new ProviderException("Bad magic number for model. Expected [IDST,IDSQ], got: " + magicString);
}
// int version - Half-life 1 models are version 10.
var version = br.ReadInt32();
if (version != MDLVersionGoldsource
&& version != MDLVersionSource2006
&& version != MDLVersionSourceEpisode2
&& version != MDLVersionSourcePortal
&& version != MDLVersionSource2007
&& version != MDLVersionSource2012)
{
throw new ProviderException("Bad version number for model. Expected [10,44,45,46,48,49], got: " + version);
}
var modelData = new ModelData {Version = version};
if (version >= MDLVersionSource2006)
{
if (loadItems.HasFlag(ModelLoadItems.Meshes))
{
// Source vertex and mesh info is stored in flat file structures, preload these separately.
LoadSourceMeshData(modelData, file);
}
}
long checksum = 0;
if (version >= MDLVersionSource2006)
{
checksum = br.ReadInt32(); // This is a long in the headers but is only written to the file in 4 bytes. Why? I don't know.
}
// char name[64] - The name of the model (file path)
var path = br.ReadFixedLengthString(Encoding.UTF8, 64);
// int length - The size of the model file in bytes
var fileSize = br.ReadInt32();
var eyePosition = br.ReadCoordinateF();
var illumPosition = CoordinateF.Zero;
if (version >= MDLVersionSource2006)
{
illumPosition = br.ReadCoordinateF();
}
var hullMin = br.ReadCoordinateF();
var hullMax = br.ReadCoordinateF();
var bbMin = br.ReadCoordinateF();
var bbMax = br.ReadCoordinateF();
// int flags - Unknown.
var flags = br.ReadInt32();
var numBones = br.ReadInt32();
var boneIndex = br.ReadInt32();
var numBoneControllers = br.ReadInt32();
var boneControllerIndex = br.ReadInt32();
var numHitBoxes = br.ReadInt32();
var hitboxIndex = br.ReadInt32();
if (version >= MDLVersionSource2006)
{
var numAnim = br.ReadInt32();
var animIndex = br.ReadInt32();
if (loadItems.HasFlag(ModelLoadItems.Animations))
{
// Source animation data is stored on their own instead of inside the sequence
LoadSourceAnimationData(br, modelData, numAnim, animIndex);
}
}
var numSeq = br.ReadInt32();
var seqIndex = br.ReadInt32();
int numSeqGroups = 0, seqGroupIndex = 0, activitylistversion = 0, eventsindexed = 0;
if (version >= MDLVersionSource2006)
{
activitylistversion = br.ReadInt32();
eventsindexed = br.ReadInt32();
}
else if (version == MDLVersionGoldsource)
{
numSeqGroups = br.ReadInt32();
seqGroupIndex = br.ReadInt32();
}
var numTextures = br.ReadInt32();
var textureIndex = br.ReadInt32();
var textureDataIndex = 0;
if (version == MDLVersionGoldsource)
{
textureDataIndex = br.ReadInt32();
}
if (version >= MDLVersionSource2006)
{
var numcdtextures = br.ReadInt32();
var cdtextureindex = br.ReadInt32();
}
var numSkinRef = br.ReadInt32();
var numSkinFamilies = br.ReadInt32();
var skinIndex = br.ReadInt32();
var numBodyParts = br.ReadInt32();
var bodyPartIndex = br.ReadInt32();
var numAttachments = br.ReadInt32();
var attachmentIndex = br.ReadInt32();
if (version >= MDLVersionSource2006)
{
var numlocalnodes = br.ReadInt32();
var localnodeindex = br.ReadInt32();
var localnodenameindex = br.ReadInt32();
var numflexdesc = br.ReadInt32();
var flexdescindex = br.ReadInt32();
var numflexcontrollers = br.ReadInt32();
var flexcontrollerindex = br.ReadInt32();
var numflexrules = br.ReadInt32();
var flexruleindex = br.ReadInt32();
var numikchains = br.ReadInt32();
var ikchainindex = br.ReadInt32();
var nummouths = br.ReadInt32();
var mouthindex = br.ReadInt32();
var numlocalposeparameters = br.ReadInt32();
var localposeparamindex = br.ReadInt32();
var surfacepropindex = br.ReadInt32();
var keyvalueindex = br.ReadInt32();
var keyvaluesize = br.ReadInt32();
var numlocalikautoplaylocks = br.ReadInt32();
var localikautoplaylockindex = br.ReadInt32();
var mass = br.ReadSingle();
var contents = br.ReadInt32();
var numincludemodels = br.ReadInt32();
var includemodelindex = br.ReadInt32();
var virtualModelPointer = br.ReadInt32();
var szanimblocknameindex = br.ReadInt32();
var numanimblocks = br.ReadInt32();
var animblockindex = br.ReadInt32();
var animblockModelPointer = br.ReadInt32();
var bonetablebynameindex = br.ReadInt32();
var pVertexBasePointer = br.ReadInt32();
var pIndexBasePointer = br.ReadInt32();
var constdirectionallightdot = br.ReadByte();
var rootLod = br.ReadByte();
var numAllowedRootLods = br.ReadByte(); // Unused in Source2006
br.ReadByte(); // Unused
var zeroframecacheindex = br.ReadInt32(); // Unused in Source2007
if (version == MDLVersionSource2006)
{
br.ReadBytes(6); // Unused
}
else if (version == MDLVersionSource2007)
{
var numflexcontrollerui = br.ReadInt32();
var flexcontrolleruiindex = br.ReadInt32();
br.ReadIntArray(2); // Unused
var studiohdr2Index = br.ReadInt32();
br.ReadInt32(); // Unused
}
}
else if (version == MDLVersionGoldsource)
{
var soundTable = br.ReadInt32();
var soundIndex = br.ReadInt32();
var soundGroups = br.ReadInt32();
var soundGroupIndex = br.ReadInt32();
var numTransitions = br.ReadInt32();
var transitionIndex = br.ReadInt32();
}
var model = new DataStructures.Models.Model();
model.Name = file.NameWithoutExtension;
model.BonesTransformMesh = modelData.Version == MDLVersionGoldsource;
if (loadItems.HasFlag(ModelLoadItems.Bones))
{
// Bones
br.BaseStream.Position = boneIndex;
for (var i = 0; i < numBones; i++) ReadBone(br, i, modelData, model);
}
// Controllers
// TODO
// Attachments
// TODO
// Hitboxes
// TODO
if (loadItems.HasFlag(ModelLoadItems.Animations))
{
if (version >= MDLVersionSource2006)
{
throw new ProviderException("Source animations are currently not supported.");
}
// Sequence Groups
var groups = new List<SequenceGroup>();
br.BaseStream.Position = seqGroupIndex;
for (var i = 0; i < numSeqGroups; i++) groups.Add(ReadSequenceGroup(br, modelData));
// Sequences
br.BaseStream.Position = seqIndex;
for (var i = 0; i < numSeq; i++) ReadSequence(br, i, modelData, model, groups);
}
// Transitions
// TODO
if (loadItems.HasFlag(ModelLoadItems.Meshes))
{
// Body parts
br.BaseStream.Position = bodyPartIndex;
for (var i = 0; i < numBodyParts; i++) ReadBodyPart(br, i, modelData, model);
}
// Texture Info
if (loadItems.HasFlag(ModelLoadItems.TextureInfo) || loadItems.HasFlag(ModelLoadItems.TextureData))
{
ReadTextureInfo(file, br, modelData, model, numTextures, textureIndex);
}
// Textures
return model;
}
