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CryAnimation/CryModelGeometryLoader.h

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+/////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//	Crytek Character Animation source code
+//	
+//	History:
+//	Created by Sergiy Migdalskiy
+//
+//  Contains the geometry load code for CryModel class
+//
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef _CRY_MODEL_GEOMETRY_LOADER_HDR_
+#define _CRY_MODEL_GEOMETRY_LOADER_HDR_
+
+#include "CryBoneInfo.h"
+class CryModel;
+#include "CryBoneHierarchyLoader.h"
+
+//////////////////////////////////////////////////////////////////////////
+// this is just a helper class for CryModelLoader.
+// it parses the CGF file and extracts the useful information in the useful form
+//
+// NOTE:
+//  to load different LODs, use the same instance of this class. Between LOD
+//  loading, it may preserve important information
+class CryModelGeometryLoader
+{
+	// class CryModel is the only client of this class for now
+public:
+	CryModelGeometryLoader ();
+	~CryModelGeometryLoader ();
+
+	// frees all resources allocated within this class
+	void clear();
+	
+	// parses the given file, returns true if successful
+	bool load (CryModel* pModel, CChunkFileReader* pReader, unsigned nLOD, float fScale);
+
+	// returns true if the bone infos have the initial position set
+	bool hasBoneInfoInitPos();
+protected:
+	// loads the materials; returns true if succeeds
+	bool loadMaterials();
+
+	bool prepare();
+	bool finalize();
+
+	// load the stuff that doesn't need anything else to be already loaded:
+	// Bone name table, bone-light binding table, light and node maps,
+	// calculate the number of morph targets
+	bool loadStage1();
+
+	// loads the stuff that needs the stuff loaded at stage 1
+	bool loadStage2();
+
+	// loads the morph targets - after the other things are known
+	bool loadMorphTargets();
+
+	// corrects the bone ids in the geometry info according to the new numeration of the bones
+	bool rebindBoneIndices();
+
+	// loads the bone name list into m_arrGeomBoneNameTable
+	// m_arrGeomBoneNameTable points to the chunk data places where the actual names are; so no need to deallocate the strings
+	bool loadBoneNameList (const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+
+	// loads the bone light binding array
+	bool loadBoneLightBinding (const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+
+	// loads the bone light binding array
+	bool loadBoneInitialPos (const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+
+	// Attempts to load the material from the given material chunk
+	// loads the material from the material chunk to the given structure.
+	// returns true if the chunk was recognized and the material was loaded
+	bool loadMaterial (CHUNK_HEADER* pMaterialChunk, unsigned nChunkSize, MAT_ENTITY& rMaterial, class CMatEntityNameTokenizer& mt);
+
+	bool loadBoneMesh (const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+	bool loadBoneAnim (const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+	bool loadBones (const BONEANIM_CHUNK_DESC* pChunk, unsigned nChunkSize);
+	// for LODs > 0, builds the m_arrTempBoneIdToIndex by matching the bone names
+	// against the bone names in the already loaded LOD 0
+	void buildBoneIndicesByNames();
+	// loads the mesh
+	bool loadMesh(const CHUNK_HEADER& chunkHeader, const void* pChunk, unsigned nChunkSize);
+
+	// returns the file path tot he file being currently loaded
+	const char* getFilePathCStr()const;
+
+	void indicateProgress (const char* szMsg = NULL);
+protected:
+	// this will contain the information about the loaded bones, if any
+	CryBoneHierarchyLoader m_BoneLoader;
+
+	// the number of elements in the arrGeomBoneNameTable is the number of bone name entities
+	// this will be the array of bone names, extracted right from the file (the pointers will point into the mapped file)
+	std::vector<const char*> m_arrGeomBoneNameTable;
+
+	// this is the array of bone-light binding
+	unsigned m_numBoneLightBinds;
+	const SBoneLightBind* m_pBoneLightBind;
+
+	// this map contains the bone geometry. The mapping is : [Chunk ID]->[Physical geometry read from that chunk]
+	// the chunks from which the physical geometry is read are the bone mesh chunks.
+	typedef CryBoneInfo::ChunkIdToPhysGeomMap ChunkIdToPhysGeomMap;
+	ChunkIdToPhysGeomMap m_mapLimbPhysGeoms;
+
+	// the map of lights
+	std::map <unsigned, const LIGHT_CHUNK_DESC*> m_mapLights;
+	// the map of object nodes - pointers to the node chunks for ObjectIDs
+	std::map <unsigned, const NODE_CHUNK_DESC*> m_mapObjectNodes;
+
+	TFixedArray<unsigned> m_arrTempBoneIdToIndex;
+
+	// the number of morph target chunks
+	unsigned m_numMorphTargets;
+
+	// the basis number of materials: by this value, the material ids are shifted in the mesh
+	int m_nFirstMat;
+
+	bool m_bFirstTimeWarningBoneGeometryMtl; // if set to true, we can issue this warning and set it to false; when it's false, we don't issue this warning to keep the extra warning number low
+  bool m_bMeshFound;     // mesh chunk found in the file
+  bool m_bGeometryFound; // mesh chunk found in the file
+	bool m_bBonesFound;    // bone animation chunk found in the file
+	unsigned m_nGeometryChunkID; // the id used to bind the morph targets
+
+	IGeomManager *m_pPhysicalGeometryManager;
+
+	CChunkFileReader_AutoPtr m_pReader;
+	CryModel* m_pModel;
+	unsigned m_nLOD;
+	float m_fScale;
+};
+
+#endif