Ogre::DataStreamPtr ApplicationContext::openAPKFile(const Ogre::String& fileName)
{
Ogre::MemoryDataStreamPtr stream;
AAsset* asset = AAssetManager_open(mAAssetMgr, fileName.c_str(), AASSET_MODE_BUFFER);
if(asset)
{
off_t length = AAsset_getLength(asset);
stream.reset(new Ogre::MemoryDataStream(length, true, true));
memcpy(stream->getPtr(), AAsset_getBuffer(asset), length);
AAsset_close(asset);
}
return stream;
}
Ogre::Codec::DecodeResult MTGACodec::decode(Ogre::DataStreamPtr& stream) const
{
// Read 4 character code
mtga_header_s hdr;
//uint32 fileType;
stream->read(&hdr, sizeof(hdr));
if (LodResource_Bitmap != hdr.magic)
{
OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
"This is not a MTGA file!", "MTGACodec::decode");
}
mtga_pal_s pal[256];
assert(stream->size() == sizeof(hdr)+hdr.uncompressedSize + sizeof(pal));
stream->seek(sizeof(mtga_header_s)+hdr.uncompressedSize);
stream->read(pal,sizeof(pal));
bool isTransparent = false;
mtga_pal_s& clr = pal[0];
if( (clr.r == 0 && clr.g >250 && clr.b > 250) || (clr.r > 250 && clr.g ==0 && clr.b > 250))
isTransparent = true;
Ogre::ImageCodec::ImageData* imgData = OGRE_NEW Ogre::ImageCodec::ImageData();
imgData->format = PF_BYTE_BGRA;
imgData->width = hdr.width;
imgData->height = hdr.height;
imgData->num_mipmaps = 3;
imgData->depth = 1;
imgData->size = Image::calculateSize(imgData->num_mipmaps, 1,
imgData->width, imgData->height, imgData->depth, imgData->format);
Ogre::MemoryDataStreamPtr pixelData;
pixelData.bind(OGRE_NEW MemoryDataStream(imgData->size));
// Now deal with the data
unsigned char* destPtr = pixelData->getPtr();
stream->seek(sizeof(mtga_header_s));
size_t width = hdr.width;
size_t height = hdr.height;
for(size_t mip = 0; mip <= imgData->num_mipmaps; ++mip)
{
for (size_t y = 0; y < height; y ++)
{
for (size_t x = 0; x < width; x ++)
{
unsigned char idx;
stream->read(&idx,1);
mtga_pal_s& clr = pal[idx];
assert(destPtr-pixelData->getPtr() < imgData->size);
*destPtr++ = clr.b;
*destPtr++ = clr.g;
*destPtr++ = clr.r;
*destPtr++ = (idx == 0 && isTransparent)?0:255;
}
}
width /=2;
height /=2;
}
DecodeResult ret;
ret.first = pixelData;
ret.second = CodecDataPtr(imgData);
return ret;
}
void CollisionMesh::loadImpl (void)
{
APP_ASSERT(masterShape==NULL);
Ogre::DataStreamPtr file;
try {
file = Ogre::ResourceGroupManager::getSingleton().openResource(name.substr(1), "GRIT");
} catch (Ogre::Exception &e) {
GRIT_EXCEPT(e.getDescription());
}
std::string ext = name.substr(name.length()-5);
uint32_t fourcc = 0;
for (int i=0 ; i<4 ; ++i) {
unsigned char c;
file->read(&c, 1);
fourcc |= c << (i*8);
}
file->seek(0);
std::string dir = grit_dirname(name);
const btVector3 ZV(0,0,0);
const btQuaternion ZQ(0,0,0,1);
bool compute_inertia = false;
bool is_static = false;
if (fourcc==0x4c4f4342) { //BCOL
Ogre::MemoryDataStreamPtr mem =
Ogre::MemoryDataStreamPtr(OGRE_NEW Ogre::MemoryDataStream(name,file));
BColFile &bcol = *reinterpret_cast<BColFile*>(mem->getPtr());
is_static = bcol.mass == 0.0f; // static
masterShape = new btCompoundShape();
BColMaterialMap mmap(dir,name);
for (unsigned i=0 ; i<bcol.hullNum ; ++i) {
BColHull &p = *bcol.hulls(i);
btConvexHullShape *s2 = new btConvexHullShape();
s2->setMargin(p.margin);
for (unsigned j=0 ; j<p.vertNum ; ++j) {
BColVert &v = *p.verts(j);
s2->addPoint(btVector3(v.x, v.y, v.z));
}
masterShape->addChildShape(btTransform(ZQ,ZV), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
for (unsigned i=0 ; i<bcol.boxNum ; ++i) {
BColBox &p = *bcol.boxes(i);
btBoxShape *s2 = new btBoxShape(btVector3(p.dx/2,p.dy/2,p.dz/2));
s2->setMargin(p.margin);
masterShape->addChildShape(btTransform(btQuaternion(p.qx,p.qy,p.qz,p.qw),
btVector3(p.px,p.py,p.pz)), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
for (unsigned i=0 ; i<bcol.cylNum ; ++i) {
BColCyl &p = *bcol.cyls(i);
btCylinderShape *s2 = new btCylinderShapeZ(btVector3(p.dx/2,p.dy/2,p.dz/2));
s2->setMargin(p.margin);
masterShape->addChildShape(btTransform(btQuaternion(p.qx,p.qy,p.qz,p.qw),
btVector3(p.px,p.py,p.pz)), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
for (unsigned i=0 ; i<bcol.coneNum ; ++i) {
BColCone &p = *bcol.cones(i);
btConeShape *s2 = new btConeShapeZ(p.radius,p.height);
s2->setMargin(p.margin);
masterShape->addChildShape(btTransform(btQuaternion(p.qx,p.qy,p.qz,p.qw),
btVector3(p.px,p.py,p.pz)), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
for (unsigned i=0 ; i<bcol.planeNum ; ++i) {
BColPlane &p = *bcol.planes(i);
btStaticPlaneShape *s2 = new btStaticPlaneShape(btVector3(p.nx,p.ny,p.nz),p.d);
masterShape->addChildShape(btTransform(ZQ,ZV), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
for (unsigned i=0 ; i<bcol.sphereNum ; ++i) {
BColSphere &p = *bcol.spheres(i);
btSphereShape *s2 = new btSphereShape(p.radius);
masterShape->addChildShape(btTransform(ZQ, btVector3(p.px,p.py,p.pz)), s2);
partMaterials.push_back(mmap(p.mat.name()));
}
if (bcol.triMeshFaceNum > 0) {
bcolVerts.resize(bcol.triMeshVertNum);
bcolFaces.resize(bcol.triMeshFaceNum);
memcpy(&bcolVerts[0], bcol.triMeshVerts(0), bcol.triMeshVertNum * sizeof(BColVert));
memcpy(&bcolFaces[0], bcol.triMeshFaces(0), bcol.triMeshFaceNum * sizeof(BColFace));
faceMaterials.reserve(bcol.triMeshFaceNum);
int counter = 0;
float accum_area = 0;
for (unsigned i=0 ; i<bcol.triMeshFaceNum ; ++i) {
BColFace &face = *bcol.triMeshFaces(i);
PhysicalMaterial *mat = mmap(face.mat.name());
faceMaterials.push_back(mat);
CollisionMesh::ProcObjFace po_face(to_v3(bcolVerts[face.v1]),
to_v3(bcolVerts[face.v2]),
to_v3(bcolVerts[face.v3]));
procObjFaceDB[mat->id].faces.push_back(po_face);
float area = (po_face.AB.cross(po_face.AC)).length();
APP_ASSERT(area>=0);
procObjFaceDB[mat->id].areas.push_back(area);
procObjFaceDB[mat->id].totalArea += area;
if (++counter = 10) {
counter = 0;
accum_area = 0;
procObjFaceDB[mat->id].areas10.push_back(accum_area);
}
accum_area += area;
}
btTriangleIndexVertexArray *v = new btTriangleIndexVertexArray(
bcolFaces.size(), reinterpret_cast<int*>(&(bcolFaces[0].v1)), sizeof(BColFace),
bcolVerts.size(), &(bcolVerts[0].x), sizeof(BColVert));
if (is_static) {
btBvhTriangleMeshShape *tm = new btBvhTriangleMeshShape(v,true,true);
tm->setMargin(bcol.triMeshMargin);
btTriangleInfoMap* tri_info_map = new btTriangleInfoMap();
tri_info_map->m_edgeDistanceThreshold = bcol.triMeshEdgeDistanceThreshold;
btGenerateInternalEdgeInfo(tm,tri_info_map);
masterShape->addChildShape(btTransform::getIdentity(), tm);
} else {
// skip over dynamic trimesh
}
}
setMass(bcol.mass);
setLinearDamping(bcol.linearDamping);
setAngularDamping(bcol.angularDamping);
setLinearSleepThreshold(bcol.linearSleepThreshold);
setAngularSleepThreshold(bcol.angularSleepThreshold);
setCCDMotionThreshold(bcol.ccdMotionThreshold);
setCCDSweptSphereRadius(bcol.ccdSweptSphereRadius);
setInertia(Vector3(bcol.inertia[0],bcol.inertia[1],bcol.inertia[2]));
compute_inertia = !bcol.inertiaProvided;
} else if (fourcc==0x4c4f4354) { //TCOL
ProxyStreamBuf proxy(file);
std::istream stream(&proxy);
quex::tcol_lexer qlex(&stream);
TColFile tcol;
parse_tcol_1_0(name,&qlex,tcol);
is_static = tcol.mass == 0.0f; // static
masterShape = new btCompoundShape();
if (tcol.usingCompound) {
TColCompound &c = tcol.compound;
for (size_t i=0 ; i<c.hulls.size() ; ++i) {
const TColHull &h = c.hulls[i];
btConvexHullShape *s2 = new btConvexHullShape();
s2->setMargin(h.margin);
for (unsigned j=0 ; j<h.vertexes.size() ; ++j) {
const Vector3 &v = h.vertexes[j];
s2->addPoint(to_bullet(v));
}
masterShape->addChildShape(btTransform(ZQ,ZV), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,h.material));
}
for (size_t i=0 ; i<c.boxes.size() ; ++i) {
const TColBox &b = c.boxes[i];
/* implement with hulls
btConvexHullShape *s2 = new btConvexHullShape();
s2->addPoint(btVector3(-b.dx/2+b.margin, -b.dy/2+b.margin, -b.dz/2+b.margin));
s2->addPoint(btVector3(-b.dx/2+b.margin, -b.dy/2+b.margin, b.dz/2-b.margin));
s2->addPoint(btVector3(-b.dx/2+b.margin, b.dy/2-b.margin, -b.dz/2+b.margin));
s2->addPoint(btVector3(-b.dx/2+b.margin, b.dy/2-b.margin, b.dz/2-b.margin));
s2->addPoint(btVector3( b.dx/2-b.margin, -b.dy/2+b.margin, -b.dz/2+b.margin));
s2->addPoint(btVector3( b.dx/2-b.margin, -b.dy/2+b.margin, b.dz/2-b.margin));
s2->addPoint(btVector3( b.dx/2-b.margin, b.dy/2-b.margin, -b.dz/2+b.margin));
s2->addPoint(btVector3( b.dx/2-b.margin, b.dy/2-b.margin, b.dz/2-b.margin));
*/
btBoxShape *s2 =new btBoxShape(btVector3(b.dx/2,b.dy/2,b.dz/2));
s2->setMargin(b.margin);
masterShape->addChildShape(btTransform(btQuaternion(b.qx,b.qy,b.qz,b.qw),
btVector3(b.px,b.py,b.pz)), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,b.material));
}
for (size_t i=0 ; i<c.cylinders.size() ; ++i) {
const TColCylinder &cyl = c.cylinders[i];
btCylinderShape *s2 =
new btCylinderShapeZ(btVector3(cyl.dx/2,cyl.dy/2,cyl.dz/2));
s2->setMargin(cyl.margin);
masterShape->addChildShape(
btTransform(btQuaternion(cyl.qx,cyl.qy,cyl.qz,cyl.qw),
btVector3(cyl.px,cyl.py,cyl.pz)), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,cyl.material));
}
for (size_t i=0 ; i<c.cones.size() ; ++i) {
const TColCone &cone = c.cones[i];
btConeShapeZ *s2 = new btConeShapeZ(cone.radius,cone.height);
s2->setMargin(cone.margin);
masterShape->addChildShape(
btTransform(btQuaternion(cone.qx,cone.qy,cone.qz,cone.qw),
btVector3(cone.px,cone.py,cone.pz)), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,cone.material));
}
for (size_t i=0 ; i<c.planes.size() ; ++i) {
const TColPlane &p = c.planes[i];
btStaticPlaneShape *s2 =
new btStaticPlaneShape(btVector3(p.nx,p.ny,p.nz),p.d);
masterShape->addChildShape(btTransform(ZQ,ZV), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,p.material));
}
for (size_t i=0 ; i<c.spheres.size() ; ++i) {
const TColSphere &sp = c.spheres[i];
btSphereShape *s2 = new btSphereShape(sp.radius);
masterShape->addChildShape(btTransform(ZQ,
btVector3(sp.px,sp.py,sp.pz)), s2);
partMaterials.push_back(phys_mats.getMaterial(dir,name,sp.material));
}
}
if (tcol.usingTriMesh) {
TColTriMesh &t = tcol.triMesh;
std::swap(verts, t.vertexes);
std::swap(faces, t.faces);
faceMaterials.reserve(faces.size());
int counter = 0;
float accum_area = 0;
for (TColFaces::const_iterator i=faces.begin(), i_=faces.end() ; i!=i_ ; ++i) {
//optimisation possible here by changing the TCol struct to be more liek what
//bullet wants, and then re-using memory
PhysicalMaterial *mat = phys_mats.getMaterial(dir,name,i->material);
faceMaterials.push_back(mat);
CollisionMesh::ProcObjFace po_face(verts[i->v1], verts[i->v2], verts[i->v3]);
procObjFaceDB[mat->id].faces.push_back(po_face);
float area = (po_face.AB.cross(po_face.AC)).length();
APP_ASSERT(area>=0);
procObjFaceDB[mat->id].areas.push_back(area);
procObjFaceDB[mat->id].totalArea += area;
if (++counter = 10) {
counter = 0;
accum_area = 0;
procObjFaceDB[mat->id].areas10.push_back(accum_area);
}
accum_area += area;
}
btTriangleIndexVertexArray *v = new btTriangleIndexVertexArray(
faces.size(), &(faces[0].v1), sizeof(TColFace),
verts.size(), &(verts[0].x), sizeof(Vector3));
if (is_static) {
btBvhTriangleMeshShape *tm = new btBvhTriangleMeshShape(v,true,true);
tm->setMargin(t.margin);
btTriangleInfoMap* tri_info_map = new btTriangleInfoMap();
tri_info_map->m_edgeDistanceThreshold = t.edgeDistanceThreshold;
btGenerateInternalEdgeInfo(tm,tri_info_map);
masterShape->addChildShape(btTransform::getIdentity(), tm);
} else {
// Skip over dynamic trimesh
}
}
setMass(tcol.mass);
setInertia(Vector3(tcol.inertia_x,tcol.inertia_y,tcol.inertia_z));
setLinearDamping(tcol.linearDamping);
setAngularDamping(tcol.angularDamping);
setLinearSleepThreshold(tcol.linearSleepThreshold);
setAngularSleepThreshold(tcol.angularSleepThreshold);
setCCDMotionThreshold(tcol.ccdMotionThreshold);
setCCDSweptSphereRadius(tcol.ccdSweptSphereRadius);
compute_inertia = !tcol.hasInertia;
} else {
GRIT_EXCEPT("Collision mesh \""+name+"\" seems to be corrupt.");
}
if (is_static) {
setInertia(Vector3(0,0,0));
} else {
if (faceMaterials.size() > 0) {
CERR << "While loading \"" + name + "\": Dynamic trimesh not supported." << std::endl;
}
if (compute_inertia) {
btVector3 i;
masterShape->calculateLocalInertia(mass,i);
setInertia(from_bullet(i));
}
}
}
