void HouseManager::load(const std::string& fileName)
{
try {
TiXmlDocument doc;
doc.Parse(g_resources.readFileContents(fileName).c_str());
if(doc.Error())
stdext::throw_exception(stdext::format("failed to load '%s': %s (House XML)", fileName, doc.ErrorDesc()));
TiXmlElement *root = doc.FirstChildElement();
if(!root || root->ValueTStr() != "houses")
stdext::throw_exception("invalid root tag name");
for(TiXmlElement *elem = root->FirstChildElement(); elem; elem = elem->NextSiblingElement()) {
if(elem->ValueTStr() != "house")
stdext::throw_exception("invalid house tag.");
uint32 houseId = elem->readType<uint32>("houseid");
HousePtr house = getHouse(houseId);
if(!house)
house = HousePtr(new House(houseId)), addHouse(house);
house->load(elem);
}
} catch(std::exception& e) {
g_logger.error(stdext::format("Failed to load '%s': %s", fileName, e.what()));
}
}
static osg::Geode* createObjects( osg::HeightField * grid, unsigned int density )
{
osg::Geode* geode = new osg::Geode;
// set up the texture of the base.
osg::StateSet* stateset = new osg::StateSet();
osg::Image * image = new osg::Image();
image->setImage( 64,64,1,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
GL_UNSIGNED_BYTE,
orderBytes( objectTexture, sizeof( objectTexture ) ),
osg::Image::NO_DELETE );
osg::Texture2D* texture = new osg::Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
stateset->setMode( GL_BLEND,osg::StateAttribute::ON );
stateset->setAttributeAndModes( new osg::CullFace() );
stateset->setAttributeAndModes( new osg::Depth( osg::Depth::LESS, 0.f, 1.f, true ) );
stateset->setAttributeAndModes( new osg::AlphaFunc( osg::AlphaFunc::GEQUAL, 0.5f ) );
geode->setStateSet( stateset );
osg::Geometry* geometry = new osg::Geometry;
geode->addDrawable(geometry);
osg::Vec3Array* vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
geometry->setNormalArray(normals);
geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
osg::Vec2Array* texCoords = new osg::Vec2Array;
geometry->setTexCoordArray(0, texCoords);
osg::Vec4Array* colours = new osg::Vec4Array;
geometry->setColorArray(colours);
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
for( unsigned int x = 0; x < grid->getNumColumns() - 1; x++ )
{
for( unsigned int y = 0; y < grid->getNumRows() - 1; y++ )
{
float z00 = grid->getHeight( x,y );
float z01 = grid->getHeight( x,y+1 );
float z10 = grid->getHeight( x+1,y );
float z11 = grid->getHeight( x+1,y+1 );
float z = 0.25 * ( z00 + z10 + z11 + z01 );
if( z < 400 ) continue;
if( z > 500 ) continue;
osg::Vec3 o( float(x) * grid->getXInterval(), float(y) * grid->getYInterval(), 0.0f );
o += grid->getOrigin();
for( unsigned int d = 0; d < density; d++ )
{
osg::Vec3 p( float( rand() ) / RAND_MAX, float( rand() ) / RAND_MAX, 0 );
z = ( 1.f - p[0] ) * ( 1.f - p[1] ) * z00 +
( 1.f - p[0] ) * ( p[1] ) * z01 +
( p[0] ) * ( p[1] ) * z11 +
( p[0] ) * ( 1.f - p[1] ) * z10;
osg::Vec3 pos(o + osg::Vec3(p.x() * grid->getXInterval(), p.y() * grid->getYInterval(), z));
if( rand() % 3 > 0 )
addTree( pos, vertices, normals, texCoords );
else
addHouse( pos, vertices, normals, texCoords );
}
}
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, vertices->size()));
geode->addDrawable(geometry);
return geode;
}
