OptionalOffset
ContentFolder::doFindOffsetWhereMetaDataShouldBeWritten()
{
// loop over all entries and try and find a previously deleted one
// If its deleted, the first bit of the entry metadata will be unset
// Note possible way of optimizing this? Store in cache available entries
// to overwrite?
if(m_checkForEarlyMetaData) { // optimization
for (long entryIndex = 0; entryIndex < m_entryCount; ++entryIndex) {
auto metaData(doSeekAndReadOfEntryMetaData(m_folderData, entryIndex));
if (!entryMetaDataIsEnabled(metaData)) {
uint32_t bufferSize = 1 + detail::MAX_FILENAME_LENGTH + 8;
std::ios_base::streamoff offset = (8 + (entryIndex * bufferSize));
return OptionalOffset(offset);
}
}
// couldn't be found before, means that it won't be found in future
m_checkForEarlyMetaData = false;
}
m_oldSpaceAvailableForEntry = false;
// free entry not found so signify that we should seek right to
// end by returning an empty optional
return OptionalOffset();
}
STARTDECL(ph_createcircle) (Value &position, Value &radius, Value &offset, Value &other_id)
{
auto &body = GetBody(other_id, position);
b2CircleShape shape;
auto off = OptionalOffset(offset);
shape.m_p.Set(off.x, off.y);
shape.m_radius = radius.fval;
return CreateFixture(body, shape);
}
STARTDECL(ph_createbox) (Value &position, Value &size, Value &offset, Value &rot, Value &other_id)
{
auto &body = GetBody(other_id, position);
auto sz = ValueDecTo<float2>(size);
auto r = rot.True() ? rot.fval : 0;
b2PolygonShape shape;
shape.SetAsBox(sz.x(), sz.y(), OptionalOffset(offset), r * RAD);
return CreateFixture(body, shape);
}
