Plugins can now add third-party Python scripts within their Content/Python/Lib/site-packages and Content/Python/Lib/{Platform}/site-packages folders, and these will be automatically available for import within UE.
#rb JeanMichel.Dignard, Timothy.Daoust
#ROBOMERGE-SOURCE: CL 16884142 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v836-16769935)
[CL 16884152 by jamie dale in ue5-release-engine-test branch]
- ~ key now also works for python command boxes
- Improved tooltip for the output log drawer
- Cosmetic UI changes.
#ROBOMERGE-SOURCE: CL 16352021 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v804-16311228)
[CL 16352157 by matt kuhlenschmidt in ue5-release-engine-test branch]
The following flags are now set when initializing the embedded Python interpreter:
- Py_IgnoreEnvironmentFlag - Ignore PYTHONPATH when calculating sys.path.
- Py_IsolatedFlag - Skip adding the user's site-packages directory to sys.path.
To counter the loss of PYTHONPATH, a new UE_PYTHONPATH environment variable is now available with the same rules as PYTHONPATH.
#jira UE-113583
#rb Rex.Hill
[CL 16064481 by Jamie Dale in ue5-main branch]
- Only export interface functions if there isn't already a function with this name on the type.
- Added tests for interfaces, including interface inheritance, and multiple inheritance on an object.
#jira UE-112343, UE-112342
#rb Jurre.deBarre
#ROBOMERGE-SOURCE: CL 15876710 in //UE5/Release-5.0-EarlyAccess/...
#ROBOMERGE-BOT: STARSHIP (Release-5.0-EarlyAccess -> Main) (v786-15839533)
[CL 15876772 by jamie dale in ue5-main branch]
LIMITATIONS:
1) Re-instancing will only update UClass instance data.
2) Adding and removing properties should only be done towards the end of a class or structure and can not be followed by complex data types.
3) Adding and removing properties from a base class should not be done if a derived class contains complex data types.
KNOWN ISSUES:
1) Changes to enumerations and structures will not be reflected in existing blueprints. However, adding new nodes to the blueprint will show the updated enumeration or structure.
2) If a class contains an enumeration or structure as a member, the class will not be re-instanced if enumeration or structure is changed.
CHANGES:
1) LiveCodingServer
1a) Modified to always execute certain static instances during load.
1b) Modified to exclude the _Statics static structures to avoid patching to old copies.
2) Added support for LiveCoding reinstancing
2a) Refactored deferred registration system for UClass, UEnum, and UScriptStruct to use a common system that works for normal game, hot reload and live coding.
2b) Type specific version check data is possible (i.e. enum doesn't have a size)
2c) Single registration static for UClass
2d) Single registration class for all types that is just a blind forward to API.
2e) Static and dynamic registrations use different API entry points to avoid having overloaded argument lists that just apply to one or the other.
2f) Shims for older API
3) New common "Reload" system to avoid using HotReload code.
3a) Support common delegates regardless of who is reloading/reinstancing.
3b) Re-instancing code moved from HotReload to Kismet2 (where the bulk of the re-instance code already existed).
3c) Modified PyWrapper to use new helper class instead of depending on HotRelaod
3d) Added WITH_RELOAD which is defined if HotReload or LiveCoding is enabled.
3e) Modifed existing code to use new #define and delegates.
Robert did the review on the changes covered by Part 2. Remaining changes are all straightforward.
#rb robert.manuszewski
#jira UE-74493
[CL 15736777 by Tim Smith in ue5-main branch]
- To maintain backwards compatibility an overload for non TCHAR raw string types has also been added which will be converted to the correct format via a temp FString first.
- Fixed cases of Fstring /= char* found in AndroidPlatformFile.cpp and PythonScriptPluginPreload.cpp
- Added unit tests for the /= operator when passing in TCHAR*, ANSICHAR*, FString, FStringView and TStringBuilder in various forms.
- Changed GetNumfor TStringBuilderBase to return int32 (which is what TStringBuilderBase::Len() returns anyway) rather than SIZE_T to prevent compiler warnings about casting types.
#rb Steve.Robb
[CL 15674959 by paul chipchase in ue5-main branch]
This can save 1-2s during Python initialization, by removing repeated calls to FileExists for everything on sys.path.
It does limit Unreal Python modules to being stored within the root of a known Content/Python directory, however this limitation is in-line with all existing modules that ship with the Engine, and allows us to avoid the cost of recursively scanning for modules.
#rb Rex.Hill
#ROBOMERGE-SOURCE: CL 15594550 in //UE5/Release-5.0-EarlyAccess/...
#ROBOMERGE-BOT: STARSHIP (Release-5.0-EarlyAccess -> Main) (v777-15581079)
[CL 15594583 by jamie dale in ue5-main branch]
Slate can shutdown prior to the Python plugin, which means it can clear an array of delegates (which may contain captured Python objects) without taking the Python GIL. TPyAutoGILPtr has been added as a way to capture Python instances that will safely take the GIL during copy, move, or destruction operations.
#rb Patrick.Laflamme
#ROBOMERGE-SOURCE: CL 15366274 in //UE5/Release-5.0-EarlyAccess/...
#ROBOMERGE-BOT: STARSHIP (Release-5.0-EarlyAccess -> Main) (v771-15082668)
[CL 15368939 by jamie dale in ue5-main branch]
