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

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

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

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****************************************************************************/

#include "resource/resource_stdneb.h"
#include "resource/skeletonresloader.h"
#include "resource/reslable.h"
#include "system/byteorder.h"

namespace Resources
{
	__ImplementClass(Resources::SkeletonResLoader, 'SKRL', Resources::ResourceLoader );
	//------------------------------------------------------------------------
	SkeletonResLoader::SkeletonResLoader()
	{

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

	}
	//------------------------------------------------------------------------
	bool 
		SkeletonResLoader::LoadResource(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.isvalid());

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

		GPtr<IO::BinaryReader> pReader = IO::BinaryReader::Create();
		n_assert(pReader.isvalid());

		pReader->SetStream( mStream );

		//  <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD>˵<EFBFBD>
#ifdef __OSX__
		pReader->SetStreamByteOrder(System::ByteOrder::BigEndian);
#else
		pReader->SetStreamByteOrder(System::ByteOrder::LittleEndian);
#endif

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

		// skeleton<6F><6E>֧<EFBFBD><D6A7><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ء<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD>ȷ<EFBFBD><C8B7>reload<61><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6>Mesh<73>Ѿ<EFBFBD><D1BE>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
		pSkelRes->UnLoadImpl();

		// load data
		if ( !LoadSkeleton(pReader, pSkelRes) )
		{
			pReader->Close();
			return false;
		}

		pReader->Close();

		return true;
	}
	//------------------------------------------------------------------------
	bool 
		SkeletonResLoader::LoadSkeleton(GPtr<IO::BinaryReader>& pReader, GPtr<SkeletonRes>& pSkelRes )
	{
		n_assert( pReader.isvalid() && pSkelRes.isvalid() );

		int magicNum = pReader->ReadInt();

		if ( magicNum != ResLable::L_Skeleton )
		{
			return false;
		}

		int version = pReader->ReadInt();
		if ( version == 1)
		{
			// <20><>ȡ<EFBFBD>汾1
			return Load_1(pReader, pSkelRes);
		}
		else if(version == 2)
		{
			// <20><>ȡ<EFBFBD>汾2
			return Load_2(pReader, pSkelRes);
		}
		else		
		{
			// not support other version now
			return false;
		}

		return false;
	}

	//------------------------------------------------------------------------
	bool SkeletonResLoader::Load_1( GPtr<IO::BinaryReader>& pReader, GPtr<SkeletonRes>& pSkelRes )
	{
		do 
		{
			int type = pReader->ReadInt();
			if ( type == ResLable::L_End )
			{
				// <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>β<EFBFBD><CEB2>־
				return true;
			}

			switch ( type )
			{
			case ResLable::L_Bone:	//	<09><>ȡinverse binding matrix
				{
					if ( !ReadSkelBone(pReader, pSkelRes ) )
					{
						return false;
					}
				}
				break;
			case ResLable::L_BoneTree:
				{
					if (! ReadSkelTree(pReader, pSkelRes))
					{
						return false;
					}
				}
				break;
			default:
				return false;	//	<09><><EFBFBD><EFBFBD>ʶ<EFBFBD>ı<EFBFBD>ʾ<EFBFBD><CABE><EFBFBD>š<EFBFBD><C5A1>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ܶ<EFBFBD><DCB6><EFBFBD><EFBFBD>ˡ<EFBFBD>
			}

		} 
		while ( !pReader->Eof() );

		return true;
	}

	//------------------------------------------------------------------------
	bool SkeletonResLoader::Load_2( GPtr<IO::BinaryReader>& pReader, GPtr<SkeletonRes>& pSkelRes )
	{
		int type = pReader->ReadInt();
		if ( type == ResLable::L_End )
		{
			// <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>β<EFBFBD><CEB2>־
			return true;
		}

		if ( type == ResLable::L_SkelID )
		{
			Util::String skelId = pReader->ReadString();
			pSkelRes->SetSkelID(skelId);
		}

		return Load_1(pReader, pSkelRes);
	}

	//------------------------------------------------------------------------
	bool 
		SkeletonResLoader::ReadSkelBone(GPtr<IO::BinaryReader>& pReader, GPtr<SkeletonRes>& pSkelRes)
	{
		int storage = pReader->ReadInt();
		if ( storage == ResLable::S_StdBone )
		{
			ushort count = pReader->ReadUShort();

			pSkelRes->Reserve(count);
			for ( ushort index = 0; index < count; ++index )
			{
				SkelBone bone;
				bone.parentIndex = pReader->ReadUShort();
				bone.boneName = pReader->ReadString();
				bone.inverseBindingMatrix = pReader->ReadMatrix44();
				pSkelRes->AddSkelBone( bone );
			}
			if( pSkelRes->GetSkelBones().Size() == (SizeT)count ) 
			{
				pSkelRes->AddSkeletonPair();
				return true;
			}
			else
			{
				// add bone fail
				return false;
			}
		}
		else
		{
			// unknown storage type 
			return false;
		}

		return false;
	}
	//------------------------------------------------------------------------
	bool
		SkeletonResLoader::ReadSkelTree(GPtr<IO::BinaryReader> &pReader, GPtr<SkeletonRes> &pSkelRes)
	{
		int storage = pReader->ReadInt();

		if ( storage == ResLable::S_StdBoneTree)
		{
			ushort count = pReader->ReadUShort();

			for (ushort index = 0; index<count; ++index)
			{
				GPtr<SkelTreeData> pData =SkelTreeData::Create();

				Util::String nodeName   = pReader->ReadString();
				Util::String parentName = pReader->ReadString();

				pData->name = nodeName;

				Math::vector pos   = pReader->ReadVector();
				Math::float4 trans = Math::float4(pos.x(), pos.y(), pos.z(), 1.0f);

				Math::vector scale  = pReader->ReadVector();
				Math::float4 scale4 = Math::float4(scale.x(), scale.y(), scale.z(), 0.0f);

				Math::float4 rot    = pReader->ReadFloat4();

				pData->pos   = trans;
				pData->scale = scale4;
				pData->rot   = rot;

				pSkelRes->AddSkelTreeData(pData, parentName);
			}

			if (pSkelRes->GetSkelTreeDataCount() == (SizeT) count)
			{
				return true;
			} 
			else
			{
				return false;
			}

		}	
		else
		{
			return false;
		}

		return false;
	}


}