#lockdown Nick.Penwarden
#rb none
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MAJOR FEATURES + CHANGES
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Change 3209340 on 2016/11/23 by Ben.Marsh
Convert UE4 codebase to an "include what you use" model - where every header just includes the dependencies it needs, rather than every source file including large monolithic headers like Engine.h and UnrealEd.h.
Measured full rebuild times around 2x faster using XGE on Windows, and improvements of 25% or more for incremental builds and full rebuilds on most other platforms.
* Every header now includes everything it needs to compile.
* There's a CoreMinimal.h header that gets you a set of ubiquitous types from Core (eg. FString, FName, TArray, FVector, etc...). Most headers now include this first.
* There's a CoreTypes.h header that sets up primitive UE4 types and build macros (int32, PLATFORM_WIN64, etc...). All headers in Core include this first, as does CoreMinimal.h.
* Every .cpp file includes its matching .h file first.
* This helps validate that each header is including everything it needs to compile.
* No engine code includes a monolithic header such as Engine.h or UnrealEd.h any more.
* You will get a warning if you try to include one of these from the engine. They still exist for compatibility with game projects and do not produce warnings when included there.
* There have only been minor changes to our internal games down to accommodate these changes. The intent is for this to be as seamless as possible.
* No engine code explicitly includes a precompiled header any more.
* We still use PCHs, but they're force-included on the compiler command line by UnrealBuildTool instead. This lets us tune what they contain without breaking any existing include dependencies.
* PCHs are generated by a tool to get a statistical amount of coverage for the source files using it, and I've seeded the new shared PCHs to contain any header included by > 15% of source files.
Tool used to generate this transform is at Engine\Source\Programs\IncludeTool.
[CL 3209342 by Ben Marsh in Main branch]
Tweaked styles and layout to better suit a tab.
Also fixed browser not showing some tutorials if all assets are not yet loaded.
Progress is now updated periodically as the browser can be now open while a tutorial is in progress.
TTP# 347956 - TUTORIALS: Selecting More Tutorials can hide Tutorial Browser
[CL 2327011 by Thomas Sarkanen in Main branch]
Tutorials browser now always appears on the mainframe. This avoids the browser appearing on small torn-off windows if content is torn off while a tutorial is in progress.
Also fixed crash when opening a browser from a widget that used to be docked to anotehr tab (weak window pointer was invalid at this point).
TTP# 347014 - EDITOR: TUTORIAL: If a tab is undocked while being referenced in the "welcome to the unreal editor" tutorial, there will be two instances of the tutorial text
[CL 2305366 by Thomas Sarkanen in Main branch]
Tutorial contexts for IOS/Android/Whatever are now hooked up (console setup ones are still missing).
Analytics added for tutorial usage in various places.
Added ability to reset tutorial state with -ResetTutorials command-line flag.
Cleaned up some unused code (still a lot more to come here!).
[CL 2302314 by Thomas Sarkanen in Main branch]
Icon is only visible if content is available for the editor in question.
Split editor settings into two groups - one is persistent settings and one is progress/state.
Tutorials record their dismissed state, so users can permenantly disable the 'nag' for a particular tutorial.
Tutorial content now solidifies when the mouse is hovered over it, so it can be made easier to read.
Fixed crash on startup if an intro tutorial was displaying rich text.
Also fixed crash for TTP# 345094, where a zero-length tutorial was being accessed.
[CL 2275934 by Thomas Sarkanen in Main branch]
Fixed visibility issues where hyperlinks could not be clicked.
Implemented BP functions for tutorial stage completion etc.
[CL 2264228 by Thomas Sarkanen in Main branch]
NOTE: Old tutorials not deprecated (yet), but widget highlights in old tutorials will stop working with this change!
Added new Blueprintable UEditorTutorial object.
Added suite of widgets and details customizations to display tutorials.
New system is available on command line switch -NewTutorials.
Slate changes:
Tag names are now stored in SWidgets, rather than simply being discarded.
Removed STutorialWrapper in favour of using Tags.
Added Tags to more multibox widgets, so virtually all can now be picked.
Added SWindow::HasOverlay so we dont attempt to add overlays to widows that cannot have them.
[CL 2244216 by Thomas Sarkanen in Main branch]
