struct SEntitySpawnParams {
  EntityId id;
  EntityId prevId;
  EntityGUID guid;
  EntityGUID prevGuid;
  IEntityClass* pClass;
  IEntityArchetype * pArchetype;
  const char * sLayerName;
  const char* sName;
  uint32 nFlags;
  uint32 nFlagsExtended;
  bool bIgnoreLock;
  bool bStaticEntityId;
  bool bCreatedThroughPool;
  Vec3 vPosition;
  Quat qRotation;
  Vec3 vScale;
  void* pUserData;
  IScriptTable * pPropertiesTable;
  IScriptTable * pPropertiesInstanceTable;
};

IEntity.h

bool bCreatedThroughPool;

Entity Pool useage.

bool bIgnoreLock;

Spawn lock.

bool bStaticEntityId;

To support save games compatible with patched levels (patched levels might use more EntityIDs and save game might conflict with dynamic ones).

EntityGUID guid;

Optional entity guid.

EntityId id;

The Entity unique identifier (EntityId). If 0 then an ID will be generated automatically (based on the bStaticEntityId parameter).

uint32 nFlags;

e.g. ENTITY_FLAG_CASTSHADOW

uint32 nFlagsExtended;

EEntityFlagsExtended flags.

IEntityArchetype * pArchetype;

Entity archetype.

IEntityClass* pClass;

Class of entity.

IScriptTable * pPropertiesInstanceTable;

IScriptTable * pPropertiesTable;

Optional properties table.

EntityGUID prevGuid;

Previously used entityGuid, in the case of reloading

EntityId prevId;

Previously used entityId, in the case of reloading

void* pUserData;

Any user defined data. It will be available for container when it will be created.

Quat qRotation;

Initial entity rotation (Local space).

const char * sLayerName;

The name of the layer the entity resides in, when in the Editor.

const char* sName;

The name of the entity... does not need to be unique.

Vec3 vPosition;

Initial entity position (Local space).

Vec3 vScale;

Initial entity scale (Local space).

SEntitySpawnParams();