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irrlicht/source/Irrlicht/CB3DMeshFileLoader.cpp

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// Copyright (C) 2006-2012 Luke Hoschke
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
// B3D Mesh loader
// File format designed by Mark Sibly for the Blitz3D engine and has been
// declared public domain
#include "CB3DMeshFileLoader.h"
#include "IVideoDriver.h"
#include "IFileSystem.h"
#include "os.h"
#ifdef _DEBUG
#define _B3D_READER_DEBUG
#endif
namespace irr
{
namespace scene
{
//! Constructor
CB3DMeshFileLoader::CB3DMeshFileLoader(scene::ISceneManager* smgr)
: AnimatedMesh(0), B3DFile(0), VerticesStart(0), NormalsInFile(false),
HasVertexColors(false), ShowWarning(true)
{
#ifdef _DEBUG
setDebugName("CB3DMeshFileLoader");
#endif
}
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".bsp")
bool CB3DMeshFileLoader::isALoadableFileExtension(const io::path& filename) const
{
return core::hasFileExtension ( filename, "b3d" );
}
//! creates/loads an animated mesh from the file.
//! \return Pointer to the created mesh. Returns 0 if loading failed.
//! If you no longer need the mesh, you should call IAnimatedMesh::drop().
//! See IReferenceCounted::drop() for more information.
IAnimatedMesh* CB3DMeshFileLoader::createMesh(io::IReadFile* file)
{
if (!file)
return 0;
B3DFile = file;
AnimatedMesh = new scene::CSkinnedMesh();
ShowWarning = true; // If true a warning is issued if too many textures are used
VerticesStart=0;
if ( load() )
{
AnimatedMesh->finalize();
}
else
{
AnimatedMesh->drop();
AnimatedMesh = 0;
}
return AnimatedMesh;
}
bool CB3DMeshFileLoader::load()
{
B3dStack.clear();
NormalsInFile=false;
HasVertexColors=false;
//------ Get header ------
SB3dChunkHeader header;
B3DFile->read(&header, sizeof(header));
#ifdef __BIG_ENDIAN__
header.size = os::Byteswap::byteswap(header.size);
#endif
if ( strncmp( header.name, "BB3D", 4 ) != 0 )
{
os::Printer::log("File is not a b3d file. Loading failed (No header found)", B3DFile->getFileName(), ELL_ERROR);
return false;
}
// Add main chunk...
B3dStack.push_back(SB3dChunk(header, B3DFile->getPos()-8));
// Get file version, but ignore it, as it's not important with b3d files...
s32 fileVersion;
B3DFile->read(&fileVersion, sizeof(fileVersion));
#ifdef __BIG_ENDIAN__
fileVersion = os::Byteswap::byteswap(fileVersion);
#endif
//------ Read main chunk ------
while ( (B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos() )
{
B3DFile->read(&header, sizeof(header));
#ifdef __BIG_ENDIAN__
header.size = os::Byteswap::byteswap(header.size);
#endif
B3dStack.push_back(SB3dChunk(header, B3DFile->getPos()-8));
if ( strncmp( B3dStack.getLast().name, "TEXS", 4 ) == 0 )
{
if (!readChunkTEXS())
return false;
}
else if ( strncmp( B3dStack.getLast().name, "BRUS", 4 ) == 0 )
{
if (!readChunkBRUS())
return false;
}
else if ( strncmp( B3dStack.getLast().name, "NODE", 4 ) == 0 )
{
if (!readChunkNODE((CSkinnedMesh::SJoint*)0) )
return false;
}
else
{
os::Printer::log("Unknown chunk found in mesh base - skipping");
if (!B3DFile->seek(B3dStack.getLast().startposition + B3dStack.getLast().length))
return false;
B3dStack.erase(B3dStack.size()-1);
}
}
B3dStack.clear();
BaseVertices.clear();
AnimatedVertices_VertexID.clear();
AnimatedVertices_BufferID.clear();
Materials.clear();
Textures.clear();
return true;
}
bool CB3DMeshFileLoader::readChunkNODE(CSkinnedMesh::SJoint *inJoint)
{
CSkinnedMesh::SJoint *joint = AnimatedMesh->addJoint(inJoint);
readString(joint->Name);
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkNODE";
os::Printer::log(logStr.c_str(), joint->Name.c_str(), ELL_DEBUG);
#endif
f32 position[3], scale[3], rotation[4];
readFloats(position, 3);
readFloats(scale, 3);
readFloats(rotation, 4);
joint->Animatedposition = core::vector3df(position[0],position[1],position[2]) ;
joint->Animatedscale = core::vector3df(scale[0],scale[1],scale[2]);
joint->Animatedrotation = core::quaternion(rotation[1], rotation[2], rotation[3], rotation[0]);
//Build LocalMatrix:
core::matrix4 positionMatrix;
positionMatrix.setTranslation( joint->Animatedposition );
core::matrix4 scaleMatrix;
scaleMatrix.setScale( joint->Animatedscale );
core::matrix4 rotationMatrix;
joint->Animatedrotation.getMatrix_transposed(rotationMatrix);
joint->LocalMatrix = positionMatrix * rotationMatrix * scaleMatrix;
if (inJoint)
joint->GlobalMatrix = inJoint->GlobalMatrix * joint->LocalMatrix;
else
joint->GlobalMatrix = joint->LocalMatrix;
while(B3dStack.getLast().startposition + B3dStack.getLast().length > B3DFile->getPos()) // this chunk repeats
{
SB3dChunkHeader header;
B3DFile->read(&header, sizeof(header));
#ifdef __BIG_ENDIAN__
header.size = os::Byteswap::byteswap(header.size);
#endif
B3dStack.push_back(SB3dChunk(header, B3DFile->getPos()-8));
if ( strncmp( B3dStack.getLast().name, "NODE", 4 ) == 0 )
{
if (!readChunkNODE(joint))
return false;
}
else if ( strncmp( B3dStack.getLast().name, "MESH", 4 ) == 0 )
{
VerticesStart=BaseVertices.size();
if (!readChunkMESH(joint))
return false;
}
else if ( strncmp( B3dStack.getLast().name, "BONE", 4 ) == 0 )
{
if (!readChunkBONE(joint))
return false;
}
else if ( strncmp( B3dStack.getLast().name, "KEYS", 4 ) == 0 )
{
if(!readChunkKEYS(joint))
return false;
}
else if ( strncmp( B3dStack.getLast().name, "ANIM", 4 ) == 0 )
{
if (!readChunkANIM())
return false;
}
else
{
os::Printer::log("Unknown chunk found in node chunk - skipping");
if (!B3DFile->seek(B3dStack.getLast().startposition + B3dStack.getLast().length))
return false;
B3dStack.erase(B3dStack.size()-1);
}
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkMESH(CSkinnedMesh::SJoint *inJoint)
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkMESH";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
s32 brushID;
B3DFile->read(&brushID, sizeof(brushID));
#ifdef __BIG_ENDIAN__
brushID = os::Byteswap::byteswap(brushID);
#endif
NormalsInFile=false;
HasVertexColors=false;
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) //this chunk repeats
{
SB3dChunkHeader header;
B3DFile->read(&header, sizeof(header));
#ifdef __BIG_ENDIAN__
header.size = os::Byteswap::byteswap(header.size);
#endif
B3dStack.push_back(SB3dChunk(header, B3DFile->getPos()-8));
if ( strncmp( B3dStack.getLast().name, "VRTS", 4 ) == 0 )
{
if (!readChunkVRTS(inJoint))
return false;
}
else if ( strncmp( B3dStack.getLast().name, "TRIS", 4 ) == 0 )
{
scene::SSkinMeshBuffer *meshBuffer = AnimatedMesh->addMeshBuffer();
if (brushID == -1)
{ /* ok */ }
else if (brushID < 0 || (u32)brushID >= Materials.size())
{
os::Printer::log("Illegal brush ID found", B3DFile->getFileName(), ELL_ERROR);
return false;
}
else
{
meshBuffer->Material=Materials[brushID].Material;
}
if(readChunkTRIS(meshBuffer,AnimatedMesh->getMeshBuffers().size()-1, VerticesStart)==false)
return false;
if (!NormalsInFile)
{
s32 i;
for ( i=0; i<(s32)meshBuffer->Indices.size(); i+=3)
{
core::plane3df p(meshBuffer->getVertex(meshBuffer->Indices[i+0])->Pos,
meshBuffer->getVertex(meshBuffer->Indices[i+1])->Pos,
meshBuffer->getVertex(meshBuffer->Indices[i+2])->Pos);
meshBuffer->getVertex(meshBuffer->Indices[i+0])->Normal += p.Normal;
meshBuffer->getVertex(meshBuffer->Indices[i+1])->Normal += p.Normal;
meshBuffer->getVertex(meshBuffer->Indices[i+2])->Normal += p.Normal;
}
for ( i = 0; i<(s32)meshBuffer->getVertexCount(); ++i )
{
meshBuffer->getVertex(i)->Normal.normalize();
BaseVertices[VerticesStart+i].Normal=meshBuffer->getVertex(i)->Normal;
}
}
}
else
{
os::Printer::log("Unknown chunk found in mesh - skipping");
if (!B3DFile->seek(B3dStack.getLast().startposition + B3dStack.getLast().length))
return false;
B3dStack.erase(B3dStack.size()-1);
}
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
/*
VRTS:
int flags ;1=normal values present, 2=rgba values present
int tex_coord_sets ;texture coords per vertex (eg: 1 for simple U/V) max=8
but we only support 3
int tex_coord_set_size ;components per set (eg: 2 for simple U/V) max=4
{
float x,y,z ;always present
float nx,ny,nz ;vertex normal: present if (flags&1)
float red,green,blue,alpha ;vertex color: present if (flags&2)
float tex_coords[tex_coord_sets][tex_coord_set_size] ;tex coords
}
*/
bool CB3DMeshFileLoader::readChunkVRTS(CSkinnedMesh::SJoint *inJoint)
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "ChunkVRTS";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
const s32 max_tex_coords = 3;
s32 flags, tex_coord_sets, tex_coord_set_size;
B3DFile->read(&flags, sizeof(flags));
B3DFile->read(&tex_coord_sets, sizeof(tex_coord_sets));
B3DFile->read(&tex_coord_set_size, sizeof(tex_coord_set_size));
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
tex_coord_sets = os::Byteswap::byteswap(tex_coord_sets);
tex_coord_set_size = os::Byteswap::byteswap(tex_coord_set_size);
#endif
if (tex_coord_sets < 0 || tex_coord_set_size < 0 ||
tex_coord_sets >= max_tex_coords || tex_coord_set_size >= 4) // Something is wrong
{
os::Printer::log("tex_coord_sets or tex_coord_set_size too big", B3DFile->getFileName(), ELL_ERROR);
return false;
}
//------ Allocate Memory, for speed -----------//
s32 numberOfReads = 3;
if (flags & 1)
{
NormalsInFile = true;
numberOfReads += 3;
}
if (flags & 2)
{
numberOfReads += 4;
HasVertexColors=true;
}
numberOfReads += tex_coord_sets*tex_coord_set_size;
const s32 memoryNeeded = (B3dStack.getLast().length / sizeof(f32)) / numberOfReads;
BaseVertices.reallocate(memoryNeeded + BaseVertices.size() + 1);
AnimatedVertices_VertexID.reallocate(memoryNeeded + AnimatedVertices_VertexID.size() + 1);
//--------------------------------------------//
while( (B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) // this chunk repeats
{
f32 position[3];
f32 normal[3]={0.f, 0.f, 0.f};
f32 color[4]={1.0f, 1.0f, 1.0f, 1.0f};
f32 tex_coords[max_tex_coords][4];
readFloats(position, 3);
if (flags & 1)
readFloats(normal, 3);
if (flags & 2)
readFloats(color, 4);
for (s32 i=0; i<tex_coord_sets; ++i)
readFloats(tex_coords[i], tex_coord_set_size);
f32 tu=0.0f, tv=0.0f;
if (tex_coord_sets >= 1 && tex_coord_set_size >= 2)
{
tu=tex_coords[0][0];
tv=tex_coords[0][1];
}
f32 tu2=0.0f, tv2=0.0f;
if (tex_coord_sets>1 && tex_coord_set_size>1)
{
tu2=tex_coords[1][0];
tv2=tex_coords[1][1];
}
// Create Vertex...
video::S3DVertex2TCoords Vertex(position[0], position[1], position[2],
normal[0], normal[1], normal[2],
video::SColorf(color[0], color[1], color[2], color[3]).toSColor(),
tu, tv, tu2, tv2);
// Transform the Vertex position by nested node...
inJoint->GlobalMatrix.transformVect(Vertex.Pos);
inJoint->GlobalMatrix.rotateVect(Vertex.Normal);
//Add it...
BaseVertices.push_back(Vertex);
AnimatedVertices_VertexID.push_back(-1);
AnimatedVertices_BufferID.push_back(-1);
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkTRIS(scene::SSkinMeshBuffer *meshBuffer, u32 meshBufferID, s32 vertices_Start)
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "ChunkTRIS";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
bool showVertexWarning=false;
s32 triangle_brush_id; // Note: Irrlicht can't have different brushes for each triangle (using a workaround)
B3DFile->read(&triangle_brush_id, sizeof(triangle_brush_id));
#ifdef __BIG_ENDIAN__
triangle_brush_id = os::Byteswap::byteswap(triangle_brush_id);
#endif
SB3dMaterial *B3dMaterial;
if (triangle_brush_id == -1)
B3dMaterial = 0;
else if (triangle_brush_id < 0 || (u32)triangle_brush_id >= Materials.size())
{
os::Printer::log("Illegal material index found", B3DFile->getFileName(), ELL_ERROR);
return false;
}
else
{
B3dMaterial = &Materials[triangle_brush_id];
meshBuffer->Material = B3dMaterial->Material;
}
const s32 memoryNeeded = B3dStack.getLast().length / sizeof(s32);
meshBuffer->Indices.reallocate(memoryNeeded + meshBuffer->Indices.size() + 1);
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) // this chunk repeats
{
s32 vertex_id[3];
B3DFile->read(vertex_id, 3*sizeof(s32));
#ifdef __BIG_ENDIAN__
vertex_id[0] = os::Byteswap::byteswap(vertex_id[0]);
vertex_id[1] = os::Byteswap::byteswap(vertex_id[1]);
vertex_id[2] = os::Byteswap::byteswap(vertex_id[2]);
#endif
//Make Ids global:
vertex_id[0] += vertices_Start;
vertex_id[1] += vertices_Start;
vertex_id[2] += vertices_Start;
for(s32 i=0; i<3; ++i)
{
if ((u32)vertex_id[i] >= AnimatedVertices_VertexID.size())
{
os::Printer::log("Illegal vertex index found", B3DFile->getFileName(), ELL_ERROR);
return false;
}
if (AnimatedVertices_VertexID[ vertex_id[i] ] != -1)
{
if ( AnimatedVertices_BufferID[ vertex_id[i] ] != (s32)meshBufferID ) //If this vertex is linked in a different meshbuffer
{
AnimatedVertices_VertexID[ vertex_id[i] ] = -1;
AnimatedVertices_BufferID[ vertex_id[i] ] = -1;
showVertexWarning=true;
}
}
if (AnimatedVertices_VertexID[ vertex_id[i] ] == -1) //If this vertex is not in the meshbuffer
{
//Check for lightmapping:
if (BaseVertices[ vertex_id[i] ].TCoords2 != core::vector2df(0.f,0.f))
meshBuffer->convertTo2TCoords(); //Will only affect the meshbuffer the first time this is called
//Add the vertex to the meshbuffer:
if (meshBuffer->VertexType == video::EVT_STANDARD)
meshBuffer->Vertices_Standard.push_back( BaseVertices[ vertex_id[i] ] );
else
meshBuffer->Vertices_2TCoords.push_back(BaseVertices[ vertex_id[i] ] );
//create vertex id to meshbuffer index link:
AnimatedVertices_VertexID[ vertex_id[i] ] = meshBuffer->getVertexCount()-1;
AnimatedVertices_BufferID[ vertex_id[i] ] = meshBufferID;
if (B3dMaterial)
{
// Apply Material/Color/etc...
video::S3DVertex *Vertex=meshBuffer->getVertex(meshBuffer->getVertexCount()-1);
if (!HasVertexColors)
Vertex->Color=B3dMaterial->Material.DiffuseColor;
else if (Vertex->Color.getAlpha() == 255)
Vertex->Color.setAlpha( (s32)(B3dMaterial->alpha * 255.0f) );
// Use texture's scale
if (B3dMaterial->Textures[0])
{
Vertex->TCoords.X *= B3dMaterial->Textures[0]->Xscale;
Vertex->TCoords.Y *= B3dMaterial->Textures[0]->Yscale;
}
/*
if (B3dMaterial->Textures[1])
{
Vertex->TCoords2.X *=B3dMaterial->Textures[1]->Xscale;
Vertex->TCoords2.Y *=B3dMaterial->Textures[1]->Yscale;
}
*/
}
}
}
meshBuffer->Indices.push_back( AnimatedVertices_VertexID[ vertex_id[0] ] );
meshBuffer->Indices.push_back( AnimatedVertices_VertexID[ vertex_id[1] ] );
meshBuffer->Indices.push_back( AnimatedVertices_VertexID[ vertex_id[2] ] );
}
B3dStack.erase(B3dStack.size()-1);
if (showVertexWarning)
os::Printer::log("B3dMeshLoader: Warning, different meshbuffers linking to the same vertex, this will cause problems with animated meshes");
return true;
}
bool CB3DMeshFileLoader::readChunkBONE(CSkinnedMesh::SJoint *inJoint)
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkBONE";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
if (B3dStack.getLast().length > 8)
{
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) // this chunk repeats
{
u32 globalVertexID;
f32 strength;
B3DFile->read(&globalVertexID, sizeof(globalVertexID));
B3DFile->read(&strength, sizeof(strength));
#ifdef __BIG_ENDIAN__
globalVertexID = os::Byteswap::byteswap(globalVertexID);
strength = os::Byteswap::byteswap(strength);
#endif
globalVertexID += VerticesStart;
if (globalVertexID >= AnimatedVertices_VertexID.size())
{
os::Printer::log("Illegal vertex index found", B3DFile->getFileName(), ELL_ERROR);
return false;
}
if (AnimatedVertices_VertexID[globalVertexID]==-1)
{
os::Printer::log("B3dMeshLoader: Weight has bad vertex id (no link to meshbuffer index found)");
}
else if (strength >0)
{
CSkinnedMesh::SWeight *weight=AnimatedMesh->addWeight(inJoint);
weight->strength=strength;
//Find the meshbuffer and Vertex index from the Global Vertex ID:
weight->vertex_id = AnimatedVertices_VertexID[globalVertexID];
weight->buffer_id = AnimatedVertices_BufferID[globalVertexID];
}
}
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkKEYS(CSkinnedMesh::SJoint *inJoint)
{
#ifdef _B3D_READER_DEBUG
// Only print first, that's just too much output otherwise
if ( !inJoint || (inJoint->PositionKeys.empty() && inJoint->ScaleKeys.empty() && inJoint->RotationKeys.empty()) )
{
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkKEYS";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
}
#endif
s32 flags;
B3DFile->read(&flags, sizeof(flags));
#ifdef __BIG_ENDIAN__
flags = os::Byteswap::byteswap(flags);
#endif
CSkinnedMesh::SPositionKey *oldPosKey=0;
core::vector3df oldPos[2];
CSkinnedMesh::SScaleKey *oldScaleKey=0;
core::vector3df oldScale[2];
CSkinnedMesh::SRotationKey *oldRotKey=0;
core::quaternion oldRot[2];
bool isFirst[3]={true,true,true};
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) //this chunk repeats
{
s32 frame;
B3DFile->read(&frame, sizeof(frame));
#ifdef __BIG_ENDIAN__
frame = os::Byteswap::byteswap(frame);
#endif
// Add key frames, frames in Irrlicht are zero-based
f32 data[4];
if (flags & 1)
{
readFloats(data, 3);
if ((oldPosKey!=0) && (oldPos[0]==oldPos[1]))
{
const core::vector3df pos(data[0], data[1], data[2]);
if (oldPos[1]==pos)
oldPosKey->frame = (f32)frame-1;
else
{
oldPos[0]=oldPos[1];
oldPosKey=AnimatedMesh->addPositionKey(inJoint);
oldPosKey->frame = (f32)frame-1;
oldPos[1].set(oldPosKey->position.set(pos));
}
}
else if (oldPosKey==0 && isFirst[0])
{
oldPosKey=AnimatedMesh->addPositionKey(inJoint);
oldPosKey->frame = (f32)frame-1;
oldPos[0].set(oldPosKey->position.set(data[0], data[1], data[2]));
oldPosKey=0;
isFirst[0]=false;
}
else
{
if (oldPosKey!=0)
oldPos[0]=oldPos[1];
oldPosKey=AnimatedMesh->addPositionKey(inJoint);
oldPosKey->frame = (f32)frame-1;
oldPos[1].set(oldPosKey->position.set(data[0], data[1], data[2]));
}
}
if (flags & 2)
{
readFloats(data, 3);
if ((oldScaleKey!=0) && (oldScale[0]==oldScale[1]))
{
const core::vector3df scale(data[0], data[1], data[2]);
if (oldScale[1]==scale)
oldScaleKey->frame = (f32)frame-1;
else
{
oldScale[0]=oldScale[1];
oldScaleKey=AnimatedMesh->addScaleKey(inJoint);
oldScaleKey->frame = (f32)frame-1;
oldScale[1].set(oldScaleKey->scale.set(scale));
}
}
else if (oldScaleKey==0 && isFirst[1])
{
oldScaleKey=AnimatedMesh->addScaleKey(inJoint);
oldScaleKey->frame = (f32)frame-1;
oldScale[0].set(oldScaleKey->scale.set(data[0], data[1], data[2]));
oldScaleKey=0;
isFirst[1]=false;
}
else
{
if (oldScaleKey!=0)
oldScale[0]=oldScale[1];
oldScaleKey=AnimatedMesh->addScaleKey(inJoint);
oldScaleKey->frame = (f32)frame-1;
oldScale[1].set(oldScaleKey->scale.set(data[0], data[1], data[2]));
}
}
if (flags & 4)
{
readFloats(data, 4);
if ((oldRotKey!=0) && (oldRot[0]==oldRot[1]))
{
// meant to be in this order since b3d stores W first
const core::quaternion rot(data[1], data[2], data[3], data[0]);
if (oldRot[1]==rot)
oldRotKey->frame = (f32)frame-1;
else
{
oldRot[0]=oldRot[1];
oldRotKey=AnimatedMesh->addRotationKey(inJoint);
oldRotKey->frame = (f32)frame-1;
oldRot[1].set(oldRotKey->rotation.set(data[1], data[2], data[3], data[0]));
oldRot[1].normalize();
}
}
else if (oldRotKey==0 && isFirst[2])
{
oldRotKey=AnimatedMesh->addRotationKey(inJoint);
oldRotKey->frame = (f32)frame-1;
// meant to be in this order since b3d stores W first
oldRot[0].set(oldRotKey->rotation.set(data[1], data[2], data[3], data[0]));
oldRot[0].normalize();
oldRotKey=0;
isFirst[2]=false;
}
else
{
if (oldRotKey!=0)
oldRot[0]=oldRot[1];
oldRotKey=AnimatedMesh->addRotationKey(inJoint);
oldRotKey->frame = (f32)frame-1;
// meant to be in this order since b3d stores W first
oldRot[1].set(oldRotKey->rotation.set(data[1], data[2], data[3], data[0]));
oldRot[1].normalize();
}
}
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkANIM()
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkANIM";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
s32 animFlags; //not stored\used
s32 animFrames;//not stored\used
f32 animFPS; //not stored\used
B3DFile->read(&animFlags, sizeof(s32));
B3DFile->read(&animFrames, sizeof(s32));
readFloats(&animFPS, 1);
if (animFPS>0.f)
AnimatedMesh->setAnimationSpeed(animFPS);
os::Printer::log("FPS", io::path((double)animFPS), ELL_DEBUG);
#ifdef __BIG_ENDIAN__
animFlags = os::Byteswap::byteswap(animFlags);
animFrames = os::Byteswap::byteswap(animFrames);
#endif
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkTEXS()
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkTEXS";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) //this chunk repeats
{
Textures.push_back(SB3dTexture());
SB3dTexture& B3dTexture = Textures.getLast();
readString(B3dTexture.TextureName);
B3dTexture.TextureName.replace('\\','/');
#ifdef _B3D_READER_DEBUG
os::Printer::log("read Texture", B3dTexture.TextureName.c_str(), ELL_DEBUG);
#endif
B3DFile->read(&B3dTexture.Flags, sizeof(s32));
B3DFile->read(&B3dTexture.Blend, sizeof(s32));
#ifdef __BIG_ENDIAN__
B3dTexture.Flags = os::Byteswap::byteswap(B3dTexture.Flags);
B3dTexture.Blend = os::Byteswap::byteswap(B3dTexture.Blend);
#endif
#ifdef _B3D_READER_DEBUG
os::Printer::log("Flags", core::stringc(B3dTexture.Flags).c_str(), ELL_DEBUG);
os::Printer::log("Blend", core::stringc(B3dTexture.Blend).c_str(), ELL_DEBUG);
#endif
readFloats(&B3dTexture.Xpos, 1);
readFloats(&B3dTexture.Ypos, 1);
readFloats(&B3dTexture.Xscale, 1);
readFloats(&B3dTexture.Yscale, 1);
readFloats(&B3dTexture.Angle, 1);
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
bool CB3DMeshFileLoader::readChunkBRUS()
{
#ifdef _B3D_READER_DEBUG
core::stringc logStr;
for ( u32 i=1; i < B3dStack.size(); ++i )
logStr += "-";
logStr += "read ChunkBRUS";
os::Printer::log(logStr.c_str(), ELL_DEBUG);
#endif
u32 n_texs;
B3DFile->read(&n_texs, sizeof(u32));
#ifdef __BIG_ENDIAN__
n_texs = os::Byteswap::byteswap(n_texs);
#endif
// number of texture ids read for Irrlicht
const u32 num_textures = core::min_(n_texs, video::MATERIAL_MAX_TEXTURES);
// number of bytes to skip (for ignored texture ids)
const u32 n_texs_offset = (num_textures<n_texs)?(n_texs-num_textures):0;
while((B3dStack.getLast().startposition + B3dStack.getLast().length) > B3DFile->getPos()) //this chunk repeats
{
// This is what blitz basic calls a brush, like a Irrlicht Material
core::stringc name;
readString(name);
#ifdef _B3D_READER_DEBUG
os::Printer::log("read Material", name, ELL_DEBUG);
#endif
Materials.push_back(SB3dMaterial());
SB3dMaterial& B3dMaterial=Materials.getLast();
readFloats(&B3dMaterial.red, 1);
readFloats(&B3dMaterial.green, 1);
readFloats(&B3dMaterial.blue, 1);
readFloats(&B3dMaterial.alpha, 1);
readFloats(&B3dMaterial.shininess, 1);
B3DFile->read(&B3dMaterial.blend, sizeof(B3dMaterial.blend));
B3DFile->read(&B3dMaterial.fx, sizeof(B3dMaterial.fx));
#ifdef __BIG_ENDIAN__
B3dMaterial.blend = os::Byteswap::byteswap(B3dMaterial.blend);
B3dMaterial.fx = os::Byteswap::byteswap(B3dMaterial.fx);
#endif
#ifdef _B3D_READER_DEBUG
os::Printer::log("Blend", core::stringc(B3dMaterial.blend).c_str(), ELL_DEBUG);
os::Printer::log("FX", core::stringc(B3dMaterial.fx).c_str(), ELL_DEBUG);
#endif
u32 i;
for (i=0; i<num_textures; ++i)
{
s32 texture_id=-1;
B3DFile->read(&texture_id, sizeof(s32));
#ifdef __BIG_ENDIAN__
texture_id = os::Byteswap::byteswap(texture_id);
#endif
//--- Get pointers to the texture, based on the IDs ---
if ((u32)texture_id < Textures.size())
{
B3dMaterial.Textures[i]=&Textures[texture_id];
#ifdef _B3D_READER_DEBUG
os::Printer::log("Layer", core::stringc(i).c_str(), ELL_DEBUG);
os::Printer::log("using texture", Textures[texture_id].TextureName.c_str(), ELL_DEBUG);
#endif
}
else
B3dMaterial.Textures[i]=0;
}
// skip other texture ids
for (i=0; i<n_texs_offset; ++i)
{
s32 texture_id=-1;
B3DFile->read(&texture_id, sizeof(s32));
#ifdef __BIG_ENDIAN__
texture_id = os::Byteswap::byteswap(texture_id);
#endif
if (ShowWarning && (texture_id != -1) && (n_texs>video::MATERIAL_MAX_TEXTURES))
{
os::Printer::log("Too many textures used in one material", B3DFile->getFileName(), ELL_WARNING);
ShowWarning = false;
}
}
//Fixes problems when the lightmap is on the first texture:
if (B3dMaterial.Textures[0] != 0)
{
if (B3dMaterial.Textures[0]->Flags & 65536) // 65536 = secondary UV
{
SB3dTexture *TmpTexture;
TmpTexture = B3dMaterial.Textures[1];
B3dMaterial.Textures[1] = B3dMaterial.Textures[0];
B3dMaterial.Textures[0] = TmpTexture;
}
}
//If a preceeding texture slot is empty move the others down:
for (i=num_textures; i>0; --i)
{
for (u32 j=i-1; j<num_textures-1; ++j)
{
if (B3dMaterial.Textures[j+1] != 0 && B3dMaterial.Textures[j] == 0)
{
B3dMaterial.Textures[j] = B3dMaterial.Textures[j+1];
B3dMaterial.Textures[j+1] = 0;
}
}
}
//------ Convert blitz flags/blend to irrlicht -------
//Two textures:
if (B3dMaterial.Textures[1])
{
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
B3dMaterial.Material.ZWriteEnable = video::EZW_OFF;
}
else if (B3dMaterial.Textures[0]) //One texture:
{
// Flags & 0x1 is usual SOLID, 0x8 is mipmap (handled before)
if (B3dMaterial.Textures[0]->Flags & 0x2) //(Alpha mapped)
{
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
B3dMaterial.Material.ZWriteEnable = video::EZW_OFF;
}
else if (B3dMaterial.Textures[0]->Flags & 0x4) //(Masked)
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF; // TODO: create color key texture
else if (B3dMaterial.alpha == 1.f)
B3dMaterial.Material.MaterialType = video::EMT_SOLID;
else
{
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
B3dMaterial.Material.ZWriteEnable = video::EZW_OFF;
}
}
else //No texture:
{
if (B3dMaterial.alpha == 1.f)
B3dMaterial.Material.MaterialType = video::EMT_SOLID;
else
{
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
B3dMaterial.Material.ZWriteEnable = video::EZW_OFF;
}
}
B3dMaterial.Material.DiffuseColor = video::SColorf(B3dMaterial.red, B3dMaterial.green, B3dMaterial.blue, B3dMaterial.alpha).toSColor();
B3dMaterial.Material.ColorMaterial=video::ECM_NONE;
//------ Material fx ------
if (B3dMaterial.fx & 1) //full-bright
{
B3dMaterial.Material.AmbientColor = video::SColor(255, 255, 255, 255);
B3dMaterial.Material.Lighting = false;
}
else
B3dMaterial.Material.AmbientColor = B3dMaterial.Material.DiffuseColor;
if (B3dMaterial.fx & 2) //use vertex colors instead of brush color
B3dMaterial.Material.ColorMaterial=video::ECM_DIFFUSE_AND_AMBIENT;
if (B3dMaterial.fx & 4) //flatshaded
B3dMaterial.Material.GouraudShading = false;
if (B3dMaterial.fx & 16) //disable backface culling
B3dMaterial.Material.BackfaceCulling = false;
if (B3dMaterial.fx & 32) //force vertex alpha-blending
{
B3dMaterial.Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
B3dMaterial.Material.ZWriteEnable = video::EZW_OFF;
}
B3dMaterial.Material.Shininess = B3dMaterial.shininess;
}
B3dStack.erase(B3dStack.size()-1);
return true;
}
void CB3DMeshFileLoader::readString(core::stringc& newstring)
{
newstring="";
while (true)
{
c8 character;
if (B3DFile->read(&character, sizeof(character)) == 0)
return; // eof
if (character==0)
return;
newstring.append(character);
}
}
void CB3DMeshFileLoader::readFloats(f32* vec, u32 count)
{
B3DFile->read(vec, count*sizeof(f32));
#ifdef __BIG_ENDIAN__
for (u32 n=0; n<count; ++n)
vec[n] = os::Byteswap::byteswap(vec[n]);
#endif
}
} // end namespace scene
} // end namespace irr
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