#lockdown Nick.Penwarden
#rb none
==========================
MAJOR FEATURES + CHANGES
==========================
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]
#lockdown Nick.Penwarden
==========================
MAJOR FEATURES + CHANGES
==========================
Change 2899855 on 2016/03/08 by Marc.Audy
Merging //UE4/Dev-Main to Dev-Framework (//UE4/Dev-Framework) @ 2899785
Change 2926689 on 2016/03/29 by Jeff.Farris
AAIController::SetFocus() will now implicitly clear any location focus at the same priority.
UE-27975
#rb john.abercrombie
Change 2926690 on 2016/03/29 by Jeff.Farris
Using wildcard operator with the "KismetEvent" or "ke" console commands will now only trigger the event on objects in the world in which it was triggered. Prevents badness with running events on things like CDOs and editor actors. (UE-23106)
Change 2926691 on 2016/03/29 by mason.seay
Content for testing collision on scaled components
Change 2926692 on 2016/03/29 by Jeff.Farris
- FixupDeltaSeconds now considers time dilation when clamping.
- Acceptable range for time dilation values is now a config parameter on WorldSettings
- Acceptable range for undilated frame times is now a config parameter on WorldSettings
(UE-27815)
#rb marc.audy
Change 2926711 on 2016/03/29 by Ori.Cohen
Fix constraint rendering when scaling a cosntraint actor
#JIRA UE-28691, UE-28700
#rb Lina.Halper
Change 2926745 on 2016/03/29 by Lukasz.Furman
navigation filters can now be instantiated per querier - usually AI agent
required for FORT-21372
Change 2926789 on 2016/03/29 by Ori.Cohen
Downgrade check to ensure for 2d physics during a hard shutdown
#rb Michael.Noland
Change 2926859 on 2016/03/29 by Ori.Cohen
Fix red herring warnings of not locking physx scenes during hard shutdown.
#JIRA UE-28747
#rb Michael.Noland
Change 2927444 on 2016/03/30 by Thomas.Sarkanen
Fixed Blueprint compiler errors when resetting timer handles
Added basic support for 64-bit int/uint terms to Blueprint. This allows the use of opaque 64-bit integer types inside of BlueprintType structs, it in no way means that 64-bit ints are fully supported in Blueprint.
Corrected a left-over formatting oversight when converting a FTimerHandle to a string.
Added new by-ref "Clear and Invalidate Timer by Handle" function to Blueprint system library & deprecated old version.
#rb Maciej.Mroz (and a few others!)
#jira UE-28833 - Unresolved compiler error for B_Pickups blueprint in Fortnite
Change 2927520 on 2016/03/30 by Jurre.deBaare
Should not allow skeletal mesh components mobility to be set to static, but detach instead
#fix Added CanHaveStaticMobility to SceneComponent class, and check this when trying to propogate Static mobility to parent component
#jira UE-26364
Change 2927533 on 2016/03/30 by Jurre.deBaare
Static Mesh Merge tool: when merging from multiple blueprints, fails to combine same materials
#fix Material index remapping was part of if-clause where it shouldn't be
#jira UE-23827
Static Mesh Merge tool, failed to combine physics data if using complex
#fix Required copying the SectionInfoMap from source static meshes
HLOD/MergeActor - Vertex Colours are not correctly propagated to negatively scaled meshes
#fix had to re-order function calls
#jira UE-28316
#rb James.Golding
Change 2927535 on 2016/03/30 by Ori.Cohen
Make sub-stepping run on game thread
#JIRA UE-24011
#rb Gil.Gribb
Change 2927537 on 2016/03/30 by Jurre.deBaare
Warning message when HLOD mesh > 65536 vertices
#jira UE-22365
#fix added messages when building proxy mesh
Change 2927691 on 2016/03/30 by Jeff.Farris
Fixed potential PlayerState leak (UE-22700)
Change 2927692 on 2016/03/30 by Lina.Halper
Allow it to select any name they want other than just restrict to what we have.
- I think it may not be the best solution but with current widget built, you can't even clear name, which is problem.
- Other solution is to add "Clear" as a name, and when that gets entered, we just clear it, but then the X button is odd and no purpose being there.
- I think we should just allow them to choose if they don't like it but with suggestions.
#rb: Ori.Cohen
#jira UE-27786
#code review: Benn.Gallagher
Change 2927853 on 2016/03/30 by Lina.Halper
[CL 2944273 by Marc Audy in Main branch]
- Fixed many Slate modules that failing to bracket compiler optimizations correctly (triggers new compiler error)
- Worked around compiler bug triggered by enums in Shared Pointer code
- Disabled compiler warnings about ".." in relative include paths (UE4's build system requires this)
[CL 2747901 by Mike Fricker in Main branch]
UETOOL-213 - Minimize Slate FString -> FText conversion (remove SLATE_TEXT_ATTRIBUTE)
This fixes any editor/engine specific code that was passing text to Slate as FString rather than FText.
[CL 2399803 by Jamie Dale in Main branch]
Introduces the concept of "Active Ticking" to allow Slate to go to sleep when there is no need to update the UI.
While asleep, Slate will skip the Tick & Paint pass for that frame entirely.
- There are TWO ways to "wake" Slate and cause a Tick/Paint pass:
1. Provide some sort of input (mouse movement, clicks, and key presses). Slate will always tick when the user is active.
- Therefore, if the logic in a given widget's Tick is only relevant in response to user action, there is no need to register an active tick.
2. Register an Active Tick. Currently this is an all-or-nothing situation, so if a single active tick needs to execute, all of Slate will be ticked.
- The purpose of an Active Tick is to allow a widget to "drive" Slate and guarantee a Tick/Paint pass in the absence of any user action.
- Examples include animation, async operations that update periodically, progress updates, loading bars, etc.
- An empty active tick is registered for viewports when they are real-time, so game project widgets are unaffected by this change and should continue to work as before.
- An Active Tick is registered by creating an FWidgetActiveTickDelegate and passing it to SWidget::RegisterActiveTick()
- There are THREE ways to unregister an active tick:
1. Return EActiveTickReturnType::StopTicking from the active tick function
2. Pass the FActiveTickHandle returned by RegisterActiveTick() to SWidget::UnregisterActiveTick()
3. Destroy the widget responsible for the active tick
- Sleeping is currently disabled, can be enabled with Slate.AllowSlateToSleep cvar
- There is currently a little buffer time during which Slate continues to tick following any input. Long-term, this is planned to be removed.
- The duration of the buffer can be adjusted using Slate.SleepBufferPostInput cvar (defaults to 1.0f)
- The FCurveSequence API has been updated to work with the active tick system
- Playing a curve sequence now requires that you pass the widget being animated by the sequence
- The active tick will automatically be registered on behalf of the widget and unregister when the sequence is complete
- GetLerpLooping() has been removed. Instead, pass true as the second param to Play() to indicate that the animation will loop. This causes the active tick to be registered indefinitely until paused or jumped to the start/end.
[CL 2391669 by Dan Hertzka in Main branch]
Please note that file comments had no purpose in nearly all cases and just added visual clutter. The two files that had meaningful file comments had their comments moved into the corresponding classes. There are still hundreds of file comments left in other files that will be removed over time.
Also cleaned up some random stuff along the way:
- relative paths to public headers within the same module are no longer necessary (automatically discovered by UBT now)
- header guards are deprecated, use #pragma once instead (all compilers support it now)
- space between multiple template brackets is no longer required (all compilers support >> now)
- NULL to nullptr, OVERRIDE to override
- spelling errors, whitespace, line breaks
[CL 2104067 by Max Preussner in Main branch]
