/// <summary>
/// Sets the model that this object was instanced from
/// </summary>
public ModelInstance( Model source )
{
m_Source = source;
// Set up the animation layers
if ( source.Animations == null )
{
return;
}
m_Layers = new AnimationLayer[ ( int )ModelPart.NumParts ];
for ( int layerIndex = 0; layerIndex < ( int )ModelPart.NumParts; ++layerIndex )
{
m_ReferencePoints[ layerIndex ] = new ReferencePoint( ( ModelPart )layerIndex );
ModelMesh partMesh = source.GetPartMesh( ( ModelPart )layerIndex );
if ( partMesh == null )
{
continue;
}
if ( source.Animations != null )
{
// TODO: This assigns the entire animation set to each layer, which isn't correct (although it'll work OK)
m_Layers[ layerIndex ] = new AnimationLayer( source.Animations, ( ModelPart )layerIndex );
}
}
}
/// <summary>
/// Loads... stuff
/// </summary>
public override object Load( ISource source, LoadParameters parameters )
{
parameters.CanCache = true;
Vector3 scale = new Vector3
(
DynamicProperties.GetProperty( parameters.Properties, "scaleX", 1.0f ),
DynamicProperties.GetProperty( parameters.Properties, "scaleY", 1.0f ),
DynamicProperties.GetProperty( parameters.Properties, "scaleZ", 1.0f )
);
Matrix44 transform = new Matrix44( );
transform.Scale( scale.X, scale.Y, scale.Z );
// create the model
Model model = new Model( );
// oh dear another md3 hack - directories mean articulated models, with skins and animations. Files
// mean single objects
if ( source is IFolder )
{
// Load animations
model.Animations = LoadAnimations( AnimationFile( source ) );
LoadNestedModel( model, source, transform );
}
else
{
LoadObjectModel( model, source, transform );
}
return model;
}
/// <summary>
/// Nests one model part's mesh inside another, using a named tag as a transform
/// </summary>
private static void NestMesh( Model model, ModelPart parent, ModelPart child, string tagName )
{
model.GetPartMesh( parent ).AddNestedPart( child, model.GetPartMesh( parent ).GetTagIndex( tagName ) );
}
private static void LoadObjectModel( Model model, ISource source, Matrix44 transform )
{
// Load the skin file for the current part
IDictionary< string, ITexture2d > textureTable = LoadSkin( source, DefaultSkinFile( source, ModelPart.Weapon ) );
// Load the MD3 associated with the current part
ModelMesh partMesh = LoadMd3( source, model, ModelPart.Weapon, transform, source, textureTable );
model.SetPartMesh( ModelPart.Weapon, partMesh );
model.SetRootMesh( partMesh );
}
private static void LoadNestedModel( Model model, ISource source, Matrix44 transform )
{
// Run through all the parts
for ( int partIndex = 0; partIndex < ( int )ModelPart.NumParts; ++partIndex )
{
ModelPart curPart = ( ModelPart )partIndex;
if ( curPart == ModelPart.Weapon )
{
// The weapon does not have a related mesh, so just ignore...
continue;
}
// Load the skin file for the current part
IDictionary< string, ITexture2d > surfaceTextureTable = LoadSkin( source, DefaultSkinFile( source, curPart ) );
// Load the MD3 associated with the current part
ModelMesh partMesh = LoadMd3( source, model, curPart, transform, MeshFile( source, curPart ), surfaceTextureTable );
model.SetPartMesh( curPart, partMesh );
}
model.SetRootMesh( model.GetPartMesh( ModelPart.Lower ) );
NestMesh( model, ModelPart.Lower, ModelPart.Upper, "tag_torso" );
NestMesh( model, ModelPart.Upper, ModelPart.Head, "tag_head" );
NestMesh( model, ModelPart.Upper, ModelPart.Weapon, "tag_weapon" );
}
/// <summary>
/// Loads an MD3 mesh resource from a stream
/// </summary>
private static ModelMesh LoadMd3( ISource source, Model model, ModelPart part, Matrix44 transform, ISource md3Source, IDictionary<string, ITexture2d> surfaceTextureTable )
{
using ( Stream inputStream = OpenStream( md3Source ) )
{
BinaryReader reader = new BinaryReader( inputStream );
// http://icculus.org/homepages/phaethon/q3a/formats/md3format.html
// Make sure of the MD3 identity
byte[] ident = reader.ReadBytes( 4 );
if ( ( ident[ 0 ] != 'I' ) || ( ident[ 1 ] != 'D' ) || ( ident[ 2 ] != 'P' ) || ( ident[ 3 ] != '3' ) )
{
throw new ApplicationException( "Failed to load MD3 resource - stream did not start with 'IDP3' MD3 identifier" );
}
// Read in header
//int version =
reader.ReadInt32( );
//string name =
ReadString( reader, MaxPathLength );
//int flags =
reader.ReadInt32( );
int numFrames = reader.ReadInt32( );
int numTags = reader.ReadInt32( );
int numSurfaces = reader.ReadInt32( );
//int numSkins =
reader.ReadInt32( );
int framesOffset = reader.ReadInt32( );
int tagsOffset = reader.ReadInt32( );
int surfacesOffset = reader.ReadInt32( );
//int eofOffset =
reader.ReadInt32( );
// TODO: Can load directly into mesh frame, tag and surface structures - don't do this intermediate step
ModelMesh mesh = new ModelMesh( model, part );
ReadFrames( reader, framesOffset, numFrames, mesh, transform );
ReadTags( reader, tagsOffset, numTags, numFrames, mesh, transform );
ReadSurfaces( source, reader, surfacesOffset, numSurfaces, numFrames, mesh, surfaceTextureTable, transform );
// TODO: REMOVE. test frames
string md3Name = md3Source.ToString( );
if ( md3Name.IndexOf( "Upper" ) != -1 )
{
mesh.DefaultFrame = 151;
}
else if ( md3Name.IndexOf( "Head" ) != -1 )
{
mesh.DefaultFrame = 0;
}
else
{
mesh.DefaultFrame = 0;
}
return mesh;
}
}
/// <summary>
/// Constructor
/// </summary>
public ModelMesh( Model model, ModelPart part )
{
m_Model = model;
m_Part = part;
}
