genesis-3d_engine/Engine/addons/resource/skeletonressaver.cc

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#include "resource/resource_stdneb.h"
#include "resource/skeletonressaver.h"
#include "resource/reslable.h"

namespace Resources
{
	__ImplementClass( Resources::SkeletonResSaver,'SKRS',Resources::ResourceSaver);
	//------------------------------------------------------------------------
	SkeletonResSaver::SkeletonResSaver()
	{

	}
	//------------------------------------------------------------------------
	SkeletonResSaver::~SkeletonResSaver()
	{

	}
	//------------------------------------------------------------------------
	bool SkeletonResSaver::SaveResource(Resource* res )
	{
		if ( !res )
			return false;

		if ( res->GetRtti() != &SkeletonRes::RTTI )
		{
			return false;
		}

		GPtr<Resource> pRes = res;
		GPtr<SkeletonRes> pSkelRes = pRes.downcast<SkeletonRes>();
		n_assert(pSkelRes);

		if ( !mStream.isvalid() )
		{
			return false;
		}

		// Only loaded res can be saved
		if ( pSkelRes->GetState() != Resource::Loaded  )
		{
			return false;
		}

		GPtr<IO::BinaryWriter> pWriter = IO::BinaryWriter::Create();
		n_assert(pWriter.isvalid());

		pWriter->SetStream( mStream );

		// Every file should be LittleEndian
		pWriter->SetStreamByteOrder(System::ByteOrder::LittleEndian);

		if ( !pWriter->Open() )
		{
			return false;
		}

		// save data
		if ( !SaveSkeleton(pWriter, pSkelRes) )
		{
			pWriter->Close();
			return false;
		}

		pWriter->Close();
		return true;
	}
	//------------------------------------------------------------------------
	bool 
		SkeletonResSaver::SaveSkeleton(GPtr<IO::BinaryWriter>& pWriter, GPtr<SkeletonRes>& pSkelRes)
	{
		pWriter->WriteInt(ResLable::L_Skeleton);

		// cur version is 1
		pWriter->WriteInt(1);

		if( !WriteSkelBone( pWriter, pSkelRes ) )
		{
			return false;
		}

		pWriter->WriteInt( ResLable::L_End );

		return true;
	}
	//------------------------------------------------------------------------
	bool 
		SkeletonResSaver::WriteSkelBone(GPtr<IO::BinaryWriter>& pWriter, GPtr<SkeletonRes>& pSkelRes)
	{
		n_assert( pWriter.isvalid() && pSkelRes.isvalid() );

		const SkelBoneContainer& container = pSkelRes->GetSkelBones();

		if ( container.IsEmpty() )
		{
			return true;
		}

		// Data mask
		pWriter->WriteInt(ResLable::L_Bone);

		//save type mask
		pWriter->WriteInt(ResLable::S_StdBone);

		SizeT size = container.Size();
		if ( size > MaxSkeletonBoneCount )
		{
			// the max bone count is 65535
			return false;
		}

		// note: ushort
		pWriter->WriteUShort( (ushort)size );

		for ( IndexT index = 0; index < size; ++index )
		{
			const SkelBone& bone = container[index];

#if NEBULA3_BOUNDSCHECKS
			if ( bone.boneName.IsValid() 
				&& ( (bone.parentIndex == MaxSkeletonBoneCount) || ( bone.parentIndex < size ) ) )
			{
				pWriter->WriteUShort( bone.parentIndex );
				pWriter->WriteString( bone.boneName.AsString() );
				pWriter->WriteMatrix44( bone.inverseBindingMatrix );
			}
			else
			{
				return false;
			}
#else
			pWriter->WriteUShort( bone.parentIndex );
			pWriter->WriteString( bone.boneName );
			pWriter->WriteMatrix44( bone.inverseBindingMatrix );
#endif
		}

		return true;
	}
}