We need to ensure that literal default values are interpreted as float strings instead of doubles. We've observed that some older Blueprint content might be using exact comparisons with floats. While this is generally frowned upon, some game logic may depend on this behavior. These issues can be difficult to debug if we covertly interpret literal float data as doubles.
As for the fix, anytime we serialize old pin data that represented a single precision float, we set a flag on the type that ensures we parse its default value string as a single precision float. This flag is also serialized, and isn't changed until the user actually changes the current value to something different.
#jira UE-145026
#preflight 622a416b03062eac59dae469
#rb phillip.kavan
#lockdown
#ROBOMERGE-AUTHOR: dave.jones2
#ROBOMERGE-SOURCE: CL 19339612 in //UE5/Release-5.0/... via CL 19348994
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v926-19321884)
[CL 19349461 by dave jones2 in ue5-main branch]
The KismetMathLibrary changes made in CL 19159126 revealed a problem with type promotions: it's too strict when it comes to finding matching functions. This is currently preventing a BP class from compiling, which is blocking Dev-EngineMerge.
We need to modify ArePinTypesEquivalent to be less strict about real number comparisons, which permits using single precision float pins with double precision math functions.
#jira UE-144351
#preflight 621ec6c331454c90cce33859
#rb Marc.Audy
#lockdown
#ROBOMERGE-AUTHOR: dave.jones2
#ROBOMERGE-SOURCE: CL 19224349 via CL 19226280 via CL 19226464 via CL 19226631 via CL 19226810
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v921-19075845)
[CL 19230290 by dave jones2 in ue5-main branch]
Two issues were discovered:
1. UKismetSystemLibrary::SetFloatPropertyByName is no longer used since it's been replaced by SetDoublePropertyByName. As a result, SetDoublePropertyByName would fail if the property was actually a float, which can happen if it's a native class. In this case, we should check for a FFloatProperty as a fallback.
2. Deprecation of float<->string converion functions in CL 19083449 introduced a regression: we can no longer use autocasts when the type is a single-precision float. In this case, we should search for autocast functions that take a double instead.
#jira UE-143681
#preflight 62181516783beeaf8ae8db8b
#rb andy.davidson
#lockdown julien.marchand
#ROBOMERGE-AUTHOR: dave.jones2
#ROBOMERGE-SOURCE: CL 19157869 in //UE5/Release-5.0/... via CL 19159851
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v921-19075845)
[CL 19161495 by dave jones2 in ue5-main branch]
2) Enhancements to StringView and a few other helper classes
3) New UE style ignore case comparison
4) Moved shared UHT definitions into a common C# file.
#rb jonathan.adamczewski
#rnx
#preflight 620e3cdc8b6428e701a24666
[CL 19033446 by Tim Smith in ue5-main branch]
previous change at CL 18866227 was backed out because it broke the bot1 cooks: https://horde.devtools.epicgames.com/log/61ffcf94676584e71ea0ab7e?lineindex=104697
Basically GetBoolMetaDataHierarchical returns the wrong thing and the return pin can no longer be broken up and so the blueprint won't compile.
#jira UE-141083
#rb helge.mathee sara.schvartzman ben.hoffman
#preflight https://horde.devtools.epicgames.com/job/62018bbd62420bfd0493e404
#ROBOMERGE-AUTHOR: jack.cai
#ROBOMERGE-SOURCE: CL 18907822 via CL 18907834 via CL 18907851 via CL 18918946 via CL 18919865
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v916-18915374)
[CL 18919918 by jack cai in ue5-main branch]
#fyi jack.cai
Original CL Desc
-----------------------------------------------------------------
Control Rig: Added BlueprintInternalUseOnly="true" to the basel rig unit struct so that all derived rig unit structs don't appear in the pin type drop down menu and create confusion
#jira UE-141083
#rb helge.mathee sara.schvartzman ben.hoffman
#preflight https://horde.devtools.epicgames.com/job/61fc0ed3af01d3caef14ccb1
[CL 18882380 by aurel cordonnier in ue5-main branch]
The original ENABLE_BLUEPRINT_REAL_NUMBERS macro was strictly meant for AB testing in the Dev-LWC. Currently, disabling it won't work, and would likely lead to broken behavior. Its presence might incorrectly indicate to licensees that this is an option that can be toggled safely.
#rb marc.audy
#jira UE-140327
#preflight 61fc6449dc0b3ecbecb6f381
#lockdown julien.marchand
#ROBOMERGE-AUTHOR: dave.jones2
#ROBOMERGE-SOURCE: CL 18864654 in //UE5/Release-5.0/... via CL 18864683 via CL 18864993
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v910-18824042)
[CL 18865002 by dave jones2 in ue5-main branch]
- Ensure that any folded AnimNode property gets remapped correctly for pin-to-property map in FBlueprintDebugData
- Ensure pin value watching for folded properties retrieves the correct value
- Const-ifying some code paths around blueprint pin watching
#jira UE-139995
#preflight 61fa624ddb42673a60239ce1
#rb Thomas.Sarkanen
#lockdown Cristina.Riveron
#ROBOMERGE-AUTHOR: jurre.debaare
#ROBOMERGE-SOURCE: CL 18824229 in //UE5/Release-5.0/... via CL 18825883 via CL 18826298
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v910-18824042)
[CL 18826349 by jurre debaare in ue5-main branch]
Blueprint real number support.
This change deprecates the use the of "float" and "double" types in Blueprints in favor of a new "real". By default, "real" is back by a double precision floating point number. However, it can be single precision if the number is a native float property or function parameter. This distinction won't be visible to the Blueprint user: in both instances, they'll be represented by "real" pin types. During deserialization, we'll automatically convert Blueprint pin types to use real/doubles, unless they're used to represent native code (including delegate signatures).
One consequence of this change is that we need to perform implicit casts between single and double precision real numbers. During Blueprint compilation, the compiler will detect points in the graph for when either a widening or narrowing conversion needs to occur. Subsequently, the script bytecode will contain a new cast instruction that performs the conversion. This also works on container types, but each entry in the container will have to be converted. This can introduce unwanted overhead for large containers that are frequently passed between Blueprint and native code.
The scope of this change affects Blueprints used by Gameplay, Animation, Control Rig, and UMG.
#rb marc.audy (serialization changes)
#jira UE-116484
#preflight 61f8bdd5a2514ba12ff7bdfc
#ROBOMERGE-AUTHOR: dave.jones2
#ROBOMERGE-SOURCE: CL 18809077 in //UE5/Release-5.0/... via CL 18809455 via CL 18822548
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v908-18788545)
[CL 18823569 by dave jones2 in ue5-main branch]
#jira UE-136038
#rb ben.hoffman
#preflight 61d4b8bad17842e547ab783d
#ROBOMERGE-AUTHOR: benjamin.fox
#ROBOMERGE-SOURCE: CL 18512890 in //UE5/Release-5.0/... via CL 18512942
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v899-18417669)
[CL 18512978 by benjamin fox in ue5-release-engine-test branch]
This represents UE4/Main @18073326, Release-5.0 @18081140 and Dev-PerfTest @18045971
[CL 18081471 by aurel cordonnier in ue5-release-engine-test branch]
This represents UE4/Main @17774255, Release-5.0 @17791557 and Dev-PerfTest @17789485
[CL 17794212 by aurel cordonnier in ue5-release-engine-test branch]
Adjust weights a bit to prioritize starts of words more
#ROBOMERGE-SOURCE: CL 17376142 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v865-17346139)
[CL 17376157 by ben zeigler in ue5-release-engine-test branch]
Description: Make it so breakpoints are saved in the EditorPerProjectUserSettings ini rather than blueprint uasset files so that they can be excluded from version control and be unique to the user
#jira UE-119540
#rb Ben.Zeigler
#ROBOMERGE-SOURCE: CL 16959614 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v838-16927207)
[CL 16959625 by jordan hoffmann in ue5-release-engine-test branch]
[FYI] jordan.hoffmann
Original CL Desc
-----------------------------------------------------------------
Feature: Move breakpoint storage out of the uasset file
Description: Make it so breakpoints are saved in the EditorPerProjectUserSettings ini rather than blueprint uasset files so that they can be excluded from version control and be unique to the user
#jira UE-119540
#preflight 60fa0407224826000161cd31
#ROBOMERGE-SOURCE: CL 16934737 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v838-16927207)
[CL 16934748 by jordan hoffmann in ue5-release-engine-test branch]
Description: Make it so breakpoints are saved in the EditorPerProjectUserSettings ini rather than blueprint uasset files so that they can be excluded from version control and be unique to the user
#jira UE-119540
#preflight 60fa0407224826000161cd31
#ROBOMERGE-SOURCE: CL 16933419 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v838-16927207)
[CL 16933421 by jordan hoffmann in ue5-release-engine-test branch]
[FYI] jordan.hoffmann
Original CL Desc
-----------------------------------------------------------------
Feature: Move breakpoint storage out of the uasset file
Description: Make it so breakpoints are saved in the EditorPerProjectUserSettings ini rather than blueprint uasset files so that they can be excluded from version control and be unique to the user
#jira UE-119540
#ROBOMERGE-SOURCE: CL 16929845 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v838-16927207)
[CL 16929852 by jordan hoffmann in ue5-release-engine-test branch]
Description: Make it so breakpoints are saved in the EditorPerProjectUserSettings ini rather than blueprint uasset files so that they can be excluded from version control and be unique to the user
#jira UE-119540
#ROBOMERGE-SOURCE: CL 16915099 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v836-16769935)
[CL 16915117 by jordan hoffmann in ue5-release-engine-test branch]
