void ezWorld::SetParent(ezGameObject* pObject, ezGameObject* pNewParent, ezGameObject::TransformPreservation preserve)
{
EZ_ASSERT_DEV(pObject != pNewParent, "Object can't be its own parent!");
EZ_ASSERT_DEV(pNewParent == nullptr || pObject->IsDynamic() || pNewParent->IsStatic(),
"Can't attach a static object to a dynamic parent!");
CheckForWriteAccess();
if (GetObjectUnchecked(pObject->m_ParentIndex) == pNewParent)
return;
UnlinkFromParent(pObject);
// UnlinkFromParent does not clear these as they are still needed in DeleteObjectNow to allow deletes while iterating.
pObject->m_NextSiblingIndex = 0;
pObject->m_PrevSiblingIndex = 0;
if (pNewParent != nullptr)
{
// Ensure that the parent's global transform is up-to-date otherwise the object's local transform will be wrong afterwards.
pNewParent->UpdateGlobalTransform();
pObject->m_ParentIndex = pNewParent->m_InternalId.m_InstanceIndex;
LinkToParent(pObject);
}
PatchHierarchyData(pObject, preserve);
}
swObject::swObject(swObject* swParent, uint _flags, const char* _nameID):sigc::trackable(),
m_parent( swParent ),
m_nameID(_nameID),
m_flags(_flags)
{
m_ChildIT = m_children.end();
if( swParent ) LinkToParent( swParent );
}
swObject::swObject(swObject* swParent):sigc::trackable(),
m_parent( swParent ),
m_nameID("swObject"),
m_flags(0)
{
m_ChildIT = m_children.end();
if( swParent ) LinkToParent( swParent );
}
Object::Object ( Object* swParent,const char* NameID ) :sigc::trackable(),
_parent ( swParent ),
_nameID ( NameID ),
_eventsMask ( 0 )
{
_ChildIT = _children.end();
if ( swParent ) LinkToParent ( swParent );
}
Object::Object ( Object* swParent ) :sigc::trackable(),
_parent ( swParent ),
_nameID ( "Object" ),
_eventsMask ( 0 )
{
_ChildIT = _children.end();
if ( swParent ) LinkToParent ( swParent );
}
ezGameObjectHandle ezWorld::CreateObject(const ezGameObjectDesc& desc, ezGameObject*& out_pObject)
{
CheckForWriteAccess();
ezGameObject* pParentObject = nullptr;
ezGameObject::TransformationData* pParentData = nullptr;
ezUInt32 uiParentIndex = 0;
ezUInt32 uiHierarchyLevel = 0;
bool bDynamic = desc.m_bDynamic;
if (TryGetObject(desc.m_hParent, pParentObject))
{
pParentData = pParentObject->m_pTransformationData;
uiParentIndex = desc.m_hParent.m_InternalId.m_InstanceIndex;
uiHierarchyLevel = pParentObject->m_uiHierarchyLevel + 1; // if there is a parent hierarchy level is parent level + 1
EZ_ASSERT_DEV(uiHierarchyLevel < (1 << 12), "Max hierarchy level reached");
bDynamic |= pParentObject->IsDynamic();
}
// get storage for the transformation data
ezGameObject::TransformationData* pTransformationData = m_Data.CreateTransformationData(bDynamic, uiHierarchyLevel);
// get storage for the object itself
ezGameObject* pNewObject = m_Data.m_ObjectStorage.Create();
// insert the new object into the id mapping table
ezGameObjectId newId = m_Data.m_Objects.Insert(pNewObject);
newId.m_WorldIndex = m_uiIndex;
// fill out some data
pNewObject->m_InternalId = newId;
pNewObject->m_Flags = ezObjectFlags::None;
pNewObject->m_Flags.AddOrRemove(ezObjectFlags::Dynamic, bDynamic);
pNewObject->m_Flags.AddOrRemove(ezObjectFlags::Active, desc.m_bActive);
pNewObject->m_sName = desc.m_sName;
pNewObject->m_pWorld = this;
pNewObject->m_ParentIndex = uiParentIndex;
pNewObject->m_Tags = desc.m_Tags;
pNewObject->m_uiTeamID = desc.m_uiTeamID;
pNewObject->m_uiHierarchyLevel = uiHierarchyLevel;
// fill out the transformation data
pTransformationData->m_pObject = pNewObject;
pTransformationData->m_pParentData = pParentData;
pTransformationData->m_localPosition = ezSimdConversion::ToVec3(desc.m_LocalPosition);
pTransformationData->m_localRotation = ezSimdConversion::ToQuat(desc.m_LocalRotation);
pTransformationData->m_localScaling = ezSimdConversion::ToVec4(desc.m_LocalScaling.GetAsVec4(desc.m_LocalUniformScaling));
pTransformationData->m_globalTransform.SetIdentity();
pTransformationData->m_velocity.SetZero();
pTransformationData->m_localBounds.SetInvalid();
pTransformationData->m_localBounds.m_BoxHalfExtents.SetW(ezSimdFloat::Zero());
pTransformationData->m_globalBounds = pTransformationData->m_localBounds;
pTransformationData->m_hSpatialData.Invalidate();
if (pParentData != nullptr)
{
pTransformationData->UpdateGlobalTransformWithParent();
}
else
{
pTransformationData->UpdateGlobalTransform();
}
pTransformationData->m_lastGlobalPosition = pTransformationData->m_globalTransform.m_Position;
// link the transformation data to the game object
pNewObject->m_pTransformationData = pTransformationData;
// fix links
LinkToParent(pNewObject);
out_pObject = pNewObject;
return ezGameObjectHandle(newId);
}