Cry Legacy: the Lessening (#5961)

* Generic Cleanup

Removals:

* Unused cvars,member variables and defines
* Windows media center edition support routines
* CSystem - removed debug_GetCallStackRaw/GetRootWindowMessageHandler/
UnloadDLL/ShutdownModuleLibraries

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Fix CryMessageBox return values in Windows build

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove named selection group and a few smaller unused functionalities

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove ObjectManager export functionality + 2 deprecated functions

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove object legacy freeze/hide support from ObjectManager

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove ObjectManager duplicate name dection, as well as object renaming

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove ObjectManager serialization and selection callbacks

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* ObjectManager - remove MoveObjects/HitTestObject/EndEditParams and related members/functions

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove a bunch of unused clone related functionality + misc

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* ObjectManager - misc removals

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* ObjectManager - more removals

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove unused object selection/retrieval in ObjectManager and LoadObjects in ObjectLoader

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* CBaseObject - remove unused material layers mask support

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* More CBaseObject cleanups.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* CBaseObject - remove SubObj functions and IMouseCreateCallback

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove unused procedural floor management, helper scale and tags.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* CBaseObject - remove more unused methods.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Removals in multiple places.

CBaseObject - unused `OBJTYPE_DUMMY` flag removed, member `IsSameClass`
CObjectArchive removed unused methods/members
CObjectManager removed unused `Update` method

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* More removals

IDisplayViewport - HitTestLine/GetGridStep/setHitcontext/
GetConstructionPlane
Unused Cry_Matrix44 template specializations.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* O3DE.exe Project-Centric "Open Editor" fix (#5852)

* The O3DE.exe Open Editor button now attempts to open the Editor in the
build directory of the project being opened.

If their is no Editor within the build directory of the Project, it uses
the Editor.exe in the current O3DE.exe executable directory if it exists

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Engine .gitignore now ignores the build directory if placed in the
AutomatedTesting project

Previously it was just ignoring a `[Bb]uild` directory if it was
directly within the engine root.
This change matches the behavior of the project templates.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Renamed the ProjectUtils GetEditorDirectory function to
GetEditorExecutablePath

Added a platform specific implementation for retrieving the path to the
Editor executable in the GetEditorExectuablePath function.

It first attempts to locate the Editor via checking the project build
directory for an Editor executable before falling back to checking the
binary directory of the currently running O3DE executable.

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

* Correct the MacOS GetEditorExecutablePath to return the Editor path

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>
Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Adding missing C++20 std::erase implementations (#5735)

There were already implementations for std::erase_if.
This adds the counterpart AZStd::erase versions

resolves #5734

Signed-off-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>
Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* More removals and refactors

`ShowMessage` and `CryMessageBox` return void now
Simplify code in `CSystem::WarningV`
Remove unused `CryGetTicksPerSec`
Remove unused WinBase functionality
Replace `nanosleep` call in WinBase with `std::this_thread::sleep_for`
Remove unused Win32Wrapper routines
Remove unused IFunctorBase.h and IEntityObjectListener.h
Fix VectorAndArray.cpp compilation
Use QMessageBox instead of CryMessageBox in the editor.
Remove empty ArchiveVars platform specific files

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Fix test code.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove an unused  function

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* CBaseObject and undo description removals.

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* A bunch of removals

* Remove IRenderNode
* Remove editor's KDTree
* Remove StatObjBus, InstanceStatObjEventBus::ReleaseData is redundant (
same functionality in the only available handler is triggered by
`OnCryEditorCloseScene`)
* Remove CExportManager::AddStatObj/AddMeshes/AddMesh,
IExportManager::ExportSingleStatObj
* Remove CIconManager/IIconManager::GetObject
* Remove CBaseObject::IntersectRayMesh
* Remove IIndexedMesh and related structs.
* Unused IUndoObject::GetDescription and all derived implementations.
* Unused CUndoBaseLibrary/CUndoBaseLibraryManager
* Unused Matrix34_tpl typedefs
* Legacy Xml classes cleanup

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove unused `Vec3ToVector3D` helper

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* fix - remove unused static variable

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

Co-authored-by: lumberyard-employee-dm <56135373+lumberyard-employee-dm@users.noreply.github.com>

Code/Editor/Plugins/ComponentEntityEditorPlugin/Objects/ComponentEntityObject.h

@@ -56,27 +56,21 @@ public:
     bool SetScale(const Vec3& scale, int flags) override;
     void InvalidateTM(int nWhyFlags) override;
     void Display(DisplayContext& disp) override;
-    void OnContextMenu(QMenu* pMenu) override;
-    int MouseCreateCallback(CViewport* view, EMouseEvent event, QPoint& point, int flags) override;
-    bool HitHelperTest(HitContext& hc) override;
     bool HitTest(HitContext& hc) override;
     void GetLocalBounds(AABB& box) override;
     void GetBoundBox(AABB& box) override;
     void SetName(const QString& name) override;
     bool IsFrozen() const override;
     void SetFrozen(bool bFrozen) override;
-    void SetHidden(bool bHidden, uint64 hiddenId = CBaseObject::s_invalidHiddenID, bool bAnimated = false) override;
     void SetSelected(bool bSelect) override;
     void SetHighlight(bool bHighlight) override;
-    IRenderNode* GetEngineNode() const override;
     void AttachChild(CBaseObject* child, bool bKeepPos = true) override;
     void DetachAll(bool bKeepPos = true) override;
     void DetachThis(bool bKeepPos = true) override;
-    CBaseObject* GetLinkParent() const override;
     XmlNodeRef Export(const QString& levelPath, XmlNodeRef& xmlNode) override;
     void DeleteEntity() override;
     void DrawDefault(DisplayContext& dc, const QColor& labelColor = QColor(255, 255, 255)) override;
-    IStatObj* GetIStatObj() override;
+
     bool IsIsolated() const override;
     bool IsSelected() const override;
     bool IsSelectable() const override;
@@ -88,12 +82,6 @@ public:
     // Component entity highlighting (accenting) is taken care of elsewhere
     void DrawHighlight(DisplayContext& /*dc*/) override {};
 
-    // Don't auto-clone children. Cloning happens in groups with reference fixups,
-    // and individually selected objercts should be cloned as individuals.
-    bool ShouldCloneChildren() const override { return false; }
-
-
-
     //////////////////////////////////////////////////////////////////////////
 
     //////////////////////////////////////////////////////////////////////////