struct IEntityClassRegistry {
  struct SEntityClassDesc {
    int flags;
    const char* sName;
    const char* sScriptFile;
    SEditorClassInfo editorClassInfo;
    IEntityClass::UserProxyCreateFunc pUserProxyCreateFunc;
    void* pUserProxyData;
    IEntityPropertyHandler* pPropertyHandler;
    IEntityEventHandler* pEventHandler;
    IEntityScriptFileHandler* pScriptFileHandler;
  };
};

IEntityClass.h

This interface is the repository of the the various entity classes, it allows creation and modification of entities types. There`s only one IEntityClassRegistry interface can exist per EntitySystem. Every entity class that can be spawned must be registered in this interface.

IEntitySystem::GetClassRegistry

struct SEntityClassDesc {
  int flags;
  const char* sName;
  const char* sScriptFile;
  SEditorClassInfo editorClassInfo;
  IEntityClass::UserProxyCreateFunc pUserProxyCreateFunc;
  void* pUserProxyData;
  IEntityPropertyHandler* pPropertyHandler;
  IEntityEventHandler* pEventHandler;
  IEntityScriptFileHandler* pScriptFileHandler;
};

IEntityClass.h

SEditorClassInfo editorClassInfo;

int flags;

IEntityEventHandler* pEventHandler;

IEntityPropertyHandler* pPropertyHandler;

IEntityScriptFileHandler* pScriptFileHandler;

IEntityClass::UserProxyCreateFunc pUserProxyCreateFunc;

void* pUserProxyData;

const char* sName;

const char* sScriptFile;

SEntityClassDesc();

virtual ~IEntityClassRegistry();

virtual IEntityClass* FindClass(const char * sClassName) const = 0;

Pointer to the IEntityClass interface, or NULL if class not found.

Retrieves pointer to the IEntityClass interface by entity class name.

virtual int GetClassCount() const = 0;

Return a pointer to the next IEntityClass interface, or NULL if is the end

Return the number of entity classes in the registry.

virtual IEntityClass* GetDefaultClass() const = 0;

Pointer to the IEntityClass interface, It can never return NULL.

Retrieves pointer to the IEntityClass interface for a default entity class.

virtual void IteratorMoveFirst() = 0;

Move the entity class iterator to the begin of the registry. To iterate over all entity classes, ex: ... IEntityClass *pClass = NULL; for (pEntityRegistry->IteratorMoveFirst(); pClass = pEntityRegistry->IteratorNext();;) { pClass ...

virtual IEntityClass* IteratorNext() = 0;

Return a pointer to the next IEntityClass interface, or NULL if is the end

Get the next entity class in the registry.

virtual void LoadClasses(const char * sPath, bool bOnlyNewClasses = false) = 0;

Load all entity class description xml files with extension ".ent" from specified directory.

virtual bool RegisterClass(IEntityClass * pClass) = 0;

true if successfully registered.

Register a new entity class.

virtual IEntityClass* RegisterStdClass(const SEntityClassDesc & entityClassDesc) = 0;

Pointer to the new created and registered IEntityClass interface, or NULL if failed.

Register standard entity class, if class id not specified (is zero), generate a new class id.

virtual bool UnregisterClass(IEntityClass * pClass) = 0;

true if successfully unregistered.

Unregister an entity class.