asqbtcupid / unreal.lua Goto Github PK

In most case, I want to call a C++ function in lua, and the C++ function need a pointer, such as UGameplayStatics::GetGameInstance(UObject* WorldContext), and in GameMode.lua, the self is a table? how can I get the light userdata of GameMode?

继承自SimpleDlg在NewCpp就创建成功了
请问可以继承CppObjectBase么，那为什么不能创建?

操作如下：
1.使用master分支的例子工程，用ue4.21生成c++工程，build后打开uproject工程。
2.在content下git/TopDownCharacter蓝图的BeginPlay事件中添加setlifespan(10.f)节点将角色生命周期设为10秒。
3.pie中播放，等待50秒至5分钟左右，有较大几率发现 输出日志 窗口出现错误；如果此时没有出现，点击停止按钮，则几乎必然在输出日志中出现错误。示例错误如下：

LogUObjectArray: Warning: Empty slot
LogOutputDevice: Warning: Script Stack (0 frames):
LogStats: FPlatformStackWalk::StackWalkAndDump - 5.871 s
LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: 0 [File:D:\work\Unreal\LuaPlugin\origin\unreal.lua.4.21_20190206\unreal.lua\Plugins\UnrealLua\LuaPlugin\Source\LuaPluginRuntime\TableUtil.cpp] [Line: 962]
LogOutputDevice: Error: Bug
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffb9b47c9d9 UE4Editor-LuaPluginRuntime.dll!touobject() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\unreallua\luaplugin\source\luapluginruntime\tableutil.cpp:962]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b43f703 UE4Editor-LuaPluginRuntime.dll!EnsureDestroy() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\unreallua\luaplugin\source\luapluginruntime\nativeluafunc.h:695]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54bd97 UE4Editor-Lua53.dll!luaD_precall() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:437]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54b6bf UE4Editor-Lua53.dll!luaD_callnoyield() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:509]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54c0a5 UE4Editor-Lua53.dll!luaD_rawrunprotected() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:145]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54b940 UE4Editor-Lua53.dll!luaD_pcall() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:729]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b542551 UE4Editor-Lua53.dll!lua_pcallk() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\lapi.c:968]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b47d168 UE4Editor-LuaPluginRuntime.dll!uobjcet_gcfunc() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\unreallua\luaplugin\source\luapluginruntime\nativeluafunc.h:614]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54bd97 UE4Editor-Lua53.dll!luaD_precall() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:437]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54b6bf UE4Editor-Lua53.dll!luaD_callnoyield() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:509]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54c0a5 UE4Editor-Lua53.dll!luaD_rawrunprotected() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:145]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54b940 UE4Editor-Lua53.dll!luaD_pcall() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\ldo.c:729]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54ec3f UE4Editor-Lua53.dll!runafewfinalizers() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\lgc.c:848]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54debd UE4Editor-Lua53.dll!luaC_runtilstate() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\lgc.c:1106]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b54dbff UE4Editor-Lua53.dll!luaC_fullgc() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\lgc.c:1173]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b541d27 UE4Editor-Lua53.dll!lua_gc() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\lua53\source\lua53\private\lapi.c:1103]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b481609 UE4Editor-LuaPluginRuntime.dll!LuaContext::OnWorldCleanup() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\unreallua\luaplugin\source\luapluginruntime\unrealluainterface.cpp:184]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b4816b4 UE4Editor-LuaPluginRuntime.dll!LuaContextMgr::OnWorldCleanup() [d:\work\unreal\luaplugin\origin\unreal.lua.4.21_20190206\unreal.lua\plugins\unreallua\luaplugin\source\luapluginruntime\unrealluainterface.cpp:343]
LogOutputDevice: Error: [Callstack] 0x00007ffb9b47f00e UE4Editor-LuaPluginRuntime.dll!TBaseRawMethodDelegateInstance<0,LuaContextMgr,void __cdecl(UWorld *,bool,bool)>::ExecuteIfSafe() [d:\work\unreal\standard\ue4\ue_4.21\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:518]
LogOutputDevice: Error: [Callstack] 0x00007ffba9318deb UE4Editor-Engine.dll!TBaseMulticastDelegate<void,UWorld * __ptr64,bool,bool>::Broadcast() [d:\build++ue4\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:974]
LogOutputDevice: Error: [Callstack] 0x00007ffba9320780 UE4Editor-Engine.dll!UWorld::CleanupWorld() [d:\build++ue4\sync\engine\source\runtime\engine\private\world.cpp:3762]
LogOutputDevice: Error: [Callstack] 0x00007ffbab58af82 UE4Editor-UnrealEd.dll!UEditorEngine::TeardownPlaySession() [d:\build++ue4\sync\engine\source\editor\unrealed\private\playlevel.cpp:748]
LogOutputDevice: Error: [Callstack] 0x00007ffbab550f1b UE4Editor-UnrealEd.dll!UEditorEngine::EndPlayMap() [d:\build++ue4\sync\engine\source\editor\unrealed\private\playlevel.cpp:324]
LogOutputDevice: Error: [Callstack] 0x00007ffbaaf83002 UE4Editor-UnrealEd.dll!UEditorEngine::Tick() [d:\build++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:1992]
LogOutputDevice: Error: [Callstack] 0x00007ffbab8a2346 UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() [d:\build++ue4\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:403]
LogOutputDevice: Error: [Callstack] 0x00007ff63f176225 UE4Editor.exe!FEngineLoop::Tick() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3699]
LogOutputDevice: Error: [Callstack] 0x00007ff63f18596c UE4Editor.exe!GuardedMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\launch.cpp:174]
LogOutputDevice: Error: [Callstack] 0x00007ff63f1859ea UE4Editor.exe!GuardedMainWrapper() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145]
LogOutputDevice: Error: [Callstack] 0x00007ff63f1948da UE4Editor.exe!WinMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:276]
LogOutputDevice: Error: [Callstack] 0x00007ff63f19659a UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
LogOutputDevice: Error: [Callstack] 0x00007ffc0d7a7e94 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc0fcaa251 ntdll.dll!UnknownFunction []
LogStats: SubmitErrorReport - 0.000 s
LogStats: SendNewReport - 1.127 s
LogStats: FDebug::EnsureFailed - 7.005 s
LogOutputDevice: Warning: stack traceback:
[C]: in ?
[C]: in ?
LogUObjectArray: Warning: Other object in slot
LogOutputDevice: Warning: Script Stack (0 frames):
LogStats: FPlatformStackWalk::StackWalkAndDump - 0.005 s

这样的错误有好几种，有时候提示Other object in slot，有时候提示什么not registered，有时候显示lua堆栈在TimerMgr类的Tick函数中。看提示像是lua的内存管理上的bug。有时间的话能否处理一下这个问题？非常感谢。

error C2011: “TWeakObjectPtr_UObject”:“class” type redifinition?
when I add a new class in a new file to my project, then build solution, some errors occur in visual studio 2017?

11>WARNING : warning : Plugin 'LuaPlugin' does not list plugin 'VarWatcher' as a dependency, but module 'LuaPluginRuntime' depends on 'VarWatcher'.
11>WARNING : warning : Plugin 'LuaPlugin' does not list plugin 'LuaDebugger' as a dependency, but module 'LuaCircularModules' depends on 'LuaDebugger'.
11>WARNING : warning : Plugin 'LuaDebugger' does not list plugin 'LuaPlugin' as a dependency, but module 'LuaDebugger' depends on 'LuaPluginRuntime'.

RootMotionMovementParams.lua.h(39): warning C4996: 'FRootMotionMovementParams::RootMotionTransform': RootMotionTransform should not be accessed directly, please use GetRootMotionTransform() to read it or one of the set/accumulate functions to modify it Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile.

I download the open source code and use ue4.19,I do not use ue4 source code,in win7,I can compile success, but in mac xcode project, It report error:
Couldn't find target rules file for target 'ShaderComileWorker' in rules

RT。

Just FYI since I tracked it down - in TableUtil.cpp a couple times FCoreObjectDelegates::PreGarbageCollectDelegate is used, but 4.18 has refactored that into FCoreUObjectDelegates::GetPreGarbageCollectDelegate()

Making that one change appears all that's necessary to fix build for 4.18.

Plays in editor with that change, though there is a problem with luahotupdate not finding files from HU.FileMap that I haven't tracked down yet. Looks like HU.FileMap just isn't being loaded with them at all

void ASLGBuildingActor::BeginPlay()
{
Super::BeginPlay();
LuaCall("beginPlay", this);
}

function Call(functionName, inscpp, ...)
if type(inscpp) == "table" and not inscpp.has_destroy then
return inscpp[functionName](inscpp, ...)
else
dump(inscpp)
ensure(false, "error in Call, No Exist such lua ins or ins has been released")
end
end

lua.log:

[Thu Mar 8 22:06:29 2018] - }
[Thu Mar 8 22:06:29 2018] - "_gc_list" = {
[Thu Mar 8 22:06:29 2018] - userdata: 0000000089E33548 = true
[Thu Mar 8 22:06:29 2018] - }
[Thu Mar 8 22:06:29 2018] - "has_destroy" = true
[Thu Mar 8 22:06:29 2018] - "beginPlay" = function: 00000000850A2AE8
[Thu Mar 8 22:06:29 2018] - "initNameInfo" = function: 00000000850A2AC0
[Thu Mar 8 22:06:29 2018] - "m_HasBeginPlay" = true
[Thu Mar 8 22:06:29 2018] - "m_HasEndPlay" = true
[Thu Mar 8 22:06:29 2018] - }
...al/SteelOcean/Client_4.18/LuaSource/util\logutil.lua:57: error in Call, No Exist such lua ins or ins has been released...al/SteelOcean/Client_4.18/LuaSource/util\logutil.lua:57: error in Call, No Exist such lua ins or ins has been released
stack traceback:
[C]: in function 'error'
...al/SteelOcean/Client_4.18/LuaSource/util\logutil.lua:57: in function 'ensure'
E:/Unreal/SteelOcean/Client_4.18/LuaSource/main.lua:85: in function <E:/Unreal/SteelOcean/Client_4.18/LuaSource/main.lua:80>

the ASLGBuildingActor new and delete frequently。
please help

我也想弄一個UE4腳本😝。

但是面對UE4的GC物件機制我無從入手...因為虛擬機與UE4 NewObject的內存完全分離，兩邊都有自己的堆和根呀...如果我Lua那邊New了一個新物件，我應該讓Unreal回收還是Lua標記管理？如果C++那邊管了Lua的Object怎麼辦？

而且我覺得做多線程時，這尤其會有衝突...我覺得唯一的解決方法就是Lua虛擬機只可以執行純函數...

還有呢，怎麼樣處理Lua的組態？總不能每一個物件都配一個lua_State吧？如果我弄了1000個Entity這不就死得了...更何況這有機會造成內存洩漏...但是用全局Lua組態又不安全...有機會造成PIE崩潰和令某些物件不死...

BP我沒有怎麼看過，太複雜了。

另外我想問是怎麼樣實現Lua衍生的UObject反射？例如我在Lua弄了一個組函數我想把它反射出去然後在C++裏用UObject::FindFunction然後創建FFrame最後呼叫可以嗎？UE4的反射重建UHT太操蛋了...

順帶一提，我是想用TypeScript的。

I have a blueprint BP_ui which is inherit from my cpp class UBaseUserWiget,

`
UCLASS(BlueprintType, Blueprintable, meta = (lua = 1))
class CLIENT_API UBaseUserWiget : public UUserWidget
{
GENERATED_BODY()
public:
UBaseUserWiget(const FObjectInitializer& ObjectInitializer);
virtual ~UBaseUserWiget();

virtual void NativeConstruct();

public:
UFUNCTION(BlueprintCallable, BlueprintCosmetic)
void ActiveFunc();

UFUNCTION(BlueprintNativeEvent)
	UWidget* GetWidget(const int32& Id);
virtual UWidget* GetWidget_Implementation(const int32& Id);

};
`

`
void UBaseUserWiget::NativeConstruct()
{
Super::NativeConstruct();

LuaCtor("ui.baseuserwiget", this);	

}
`

situation 1,
I call "ActiveFunc" in the BP_ui.
on windows, that works well,
but on android, that does not work,

situation 2,
I override the method "GetWidget" in BP,
on windows, that works well,
but on android, that does not work,

ue4 version: 4.18.3

do you know how it happens?

please help, thank you

UMG blueprint will stay in memory forever after using SimpleDlg.

my struct:
USTRUCT()
struct FFormation
{
GENERATED_BODY()

FFormation()
{

}

// sort
UPROPERTY()
TArray<FBattleShip>	sortShipArr;

};

when compile at "luacallr(FFormation, ...."
it match
template
static T popinternal(lua_State L, int index, typename TEnableIf< TIsSame<typename traitstructclass::NotStructType, NotNeedTempInsType>::Value,T>::Type pp = nullptr )
{
return (T)ue_lua_tointeger(L, index);
};

please help

When I use Lua then OpenLevel will crash

Log:
[2018.04.18-07.15.20:940][419]LogBlueprintUserMessages: Late PlayInEditor Detection: Level '/Game/Map/Leide_HH/Leide_HH.Leide_HH:PersistentLevel' has LevelScriptBlueprint '/Game/Map/Leide_HH/Leide_HH.Leide_HH:PersistentLevel.Leide_HH' with GeneratedClass '/Game/Map/Leide_HH/Leide_HH.Leide_HH_C' with ClassGeneratedBy '/Game/Map/Leide_HH/Leide_HH.Leide_HH:PersistentLevel.Leide_HH'
[2018.04.18-07.15.22:678][469]LogNet: Browse: /Game/Map/HRTEST_MAP/bal02
[2018.04.18-07.15.22:679][469]LogLoad: LoadMap: /Game/Map/HRTEST_MAP/bal02
[2018.04.18-07.15.22:795][469]LogLoad: World /Game/Map/Leide_HH/UEDPIE_0_Leide_HH.Leide_HH not cleaned up by garbage collection!
[2018.04.18-07.15.22:795][469]LogReferenceChain: Searching referencers for Leide_HH. This may take several minutes.
[2018.04.18-07.15.23:156][469]LogReferenceChain: Generating reference graph ...
[2018.04.18-07.15.23:165][469]LogReferenceChain: Level 0 has 1 nodes ...
[2018.04.18-07.15.23:183][469]LogReferenceChain: Level 1 added 0 nodes ...
[2018.04.18-07.15.23:183][469]LogReferenceChain: Generating reference chains ...
[2018.04.18-07.15.23:183][469]LogReferenceChain:
[2018.04.18-07.15.23:183][469]LogReferenceChain: External Referencers:
[2018.04.18-07.15.23:183][469]LogReferenceChain:
[2018.04.18-07.15.24:319][469]LogReferenceChain: (root) GCObjectReferencer /Engine/Transient.GCObjectReferencer_0->0x00000000BF63F664 UE4Editor-CoreUObject-Win64-Debug.dll!UGCObjectReferencer::AddReferencedObjects() [f:\ff15project\client\engine\source\runtime\coreuobject\private\misc\gcobjectreferencer.cpp:19]
[2018.04.18-07.15.24:319][469]LogReferenceChain: (target) World /Game/Map/Leide_HH/UEDPIE_0_Leide_HH.Leide_HH
[2018.04.18-07.15.24:720][469]LogLoad: (Object is not currently rooted)

[2018.04.18-07.15.42:230][469]LogWindows: Windows GetLastError: 操作成功完成。 (0)
[2018.04.18-07.15.42:232][469]LogWindows: Error: === Critical error: ===
[2018.04.18-07.15.42:232][469]LogWindows: Error:
[2018.04.18-07.15.42:232][469]LogWindows: Error: Fatal error: [File:F:\FF15Project\client\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp] [Line: 6717]
[2018.04.18-07.15.42:232][469]LogWindows: Error: World /Game/Map/Leide_HH/UEDPIE_0_Leide_HH.Leide_HH not cleaned up by garbage collection!
[2018.04.18-07.15.42:232][469]LogWindows: Error: (Object is not currently rooted)
[2018.04.18-07.15.42:232][469]LogWindows: Error:
[2018.04.18-07.15.42:232][469]LogWindows: Error:
[2018.04.18-07.15.42:232][469]LogWindows: Error:
[2018.04.18-07.15.42:232][469]LogWindows: Error:
[2018.04.18-07.15.42:254][469]LogExit: Executing StaticShutdownAfterError
[2018.04.18-07.15.42:257][469]LogWindows: FPlatformMisc::RequestExit(1)
[2018.04.18-07.15.42:257][469]Log file closed, 04/18/18 15:15:42

if I doesnt call lua everythingh is ok.
My UE4 version is 4.18.2
thank you

Please help.
_objectins2luatable table, how to set nil for lua GC?
UUserWidget how to call Release, it does not has EndPlay?

thanks ~

Can't Compile with 4.22 on macos with Xcode10

such as, in WidgetComponent.h
UENUM(BlueprintType)
enum class EWidgetSpace : uint8
{
/** The widget is rendered in the world as mesh, it can be occluded like any other mesh in the world. /
World,
/* The widget is rendered in the screen, completely outside of the world, never occluded. */
Screen
};

protected:
/** The coordinate space in which to render the widget */
UPROPERTY(EditAnywhere, Category=UserInterface)
EWidgetSpace Space;

export: in WidgetComponent.script.h
static int32 UWidgetComponent_Set_Space(lua_State* L)
{
UWidgetComponent* Obj = (UWidgetComponent*)UTableUtil::tousertype("UWidgetComponent",1);
return 0;
}

~please help

3>EXEC : error : Can't save a makefile that has invalid contents. See UBTMakefile.IsValidMakefile()
3> (see ..\Programs\UnrealBuildTool\Log_UHT.txt for full exception trace)
ERROR: Can't save a makefile that has invalid contents. See UBTMakefile.IsValidMakefile()

另外反射版本哪个链接打开提示404 找不到git地址

UAssetObjectProperty has been renamed to USoftObjectProperty

切换多平台编译的时候很麻烦，要删除原先的LuaGeneratedCode重新生成，建议不同平台生成在不同的位置。

when I export LevelSequence module, error:
LevelSequenceObject.generated.h can not be found..

If i want to create a UObject, In C++, i need to AddRefrenceObject to avoid the GC， But in lua， if i create a UObject, where shound i put the AddRefrenceObject code to? How do you avoid the GC in your lua framework？

你好，我clone了当前的版本，发现我以前clone的代码怎么在当前的历史记录里找不到了，是github出问题了吗？都不知道以前的代码和今天clone的代码哪个比较新了。能帮我看看哪个是新版本吗？以前clone的Luautils.h文件是这样的：
// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "Kismet/BlueprintFunctionLibrary.h"
#include "UnrealLua.h"
#include "Luautils.generated.h"

USTRUCT()
struct LUAPLUGINRUNTIME_API FReplifetimeCond {
GENERATED_USTRUCT_BODY()

UPROPERTY()
FString PropertyName;

UPROPERTY()
TEnumAsByte<ELifetimeCondition> Cond;

};

UCLASS()
class LUAPLUGINRUNTIME_API ULuautils : public UBlueprintFunctionLibrary
{
GENERATED_BODY()

public:
UFUNCTION()
static UWorld* GetWorld1(AActor *obj);

UFUNCTION()
	static UWorld* GetActorWorld(AActor *obj);

UFUNCTION()
static void SetupAttachment(USceneComponent* Child, USceneComponent* InParent, FName InSocketName = NAME_None);

UFUNCTION(BlueprintCallable)
static void GetPlayerViewPoint(APlayerController* controler, FVector& out_Location, FRotator& out_Rotation);

UFUNCTION()
static FRotator GetViewRotation(APawn* pawn);

UFUNCTION()
static FVector VRandCone(FRandomStream stream, FVector const& Dir, float HorizontalConeHalfAngleRad, float VerticalConeHalfAngleRad);

UFUNCTION()
static FVector2D FVector2D_New(float InX =0, float InY =0);

UFUNCTION(BlueprintCallable, Category = "luautils")
static FColor FColor_New(uint8 InR = 0, uint8 InG = 0, uint8 InB = 0, uint8 InA = 255);

UFUNCTION()
static void GetAllWidgets(UUserWidget* UserWidget, UPARAM(ref)TArray<FName>& Names, UPARAM(ref)TArray<UWidget*>& Widgets, UPARAM(ref)TArray<FName>&TypesOfWidget);

UFUNCTION()
static void log(FString content);

UFUNCTION()
static FString GetName(UObject* p);

UFUNCTION()
	static void UpdateNav(UActorComponent *Component);

UFUNCTION()
	static void AddGCRef(UObject*p);

UFUNCTION()
	static UObject* GetPrivateClass(UObject *p);

UFUNCTION()
	static void CompareSpeed1(UObject*p);


static void CompareSpeed11() {};

UFUNCTION()
	static void CompareSpeed2(int i) {}

UFUNCTION()
	static void CompareSpeed3(int i, UObject* p) {}

static void call() {};

static void call1(int i) {};

static void call2(FVector& i) {};

static void call3(int i, float j, FString k) {};

static FVector call4() { static FVector i; return i; }

UFUNCTION()
	static void ucall(UObject*p) { delete p; };

UFUNCTION()
	static void ucall1(int i) {};

UFUNCTION()
	static void ucall2(FVector& i) {};

UFUNCTION()
	static void ucall3(int i, float j, FString k) {};

UFUNCTION()
	static FVector ucall4() { static FVector i; return i; }

UFUNCTION()
	static FString TestAlloc();

};

USTRUCT()
struct LUAPLUGINRUNTIME_API Flalala
{
GENERATED_BODY()

	UPROPERTY()
	int32 i;

};

struct CmpSpeed
{
static int32 TestTable(lua_State*inL)
{
lua_pushvalue(inL, lua_upvalueindex(1));
lua_pushvalue(inL, 2);
lua_rawget(inL, -2);
return 1;
}

static int32 TestTMap(lua_State*inL)
{
	void* p = (void*)lua_touserdata(inL, lua_upvalueindex(1));
	TMap<FName, void*>* Class = (TMap<FName, void*>*)(p);
	FName Key = lua_tostring(inL, 2);
	lua_pushlightuserdata(inL, *Class->Find(Key));
	return 1;
}

static int32 GetTwoFunc(lua_State*inL)
{
	lua_newtable(inL);
	void*p = reinterpret_cast<void*>(123);
	lua_pushlightuserdata(inL, p);
	lua_setfield(inL, -2, "longlongnamelala");
	lua_pushcclosure(inL, TestTable, 1);

	static TMap<FName, void*> Map;
	Map.Add(FName("longlongnamelala"), p);
	lua_pushlightuserdata(inL, &Map);
	lua_pushcclosure(inL, TestTMap, 1);

	return 2;
}

};

LUA_GLUE_BEGIN(CmpSpeed)
LUA_GLUE_FUNCTION(GetTwoFunc)
LUA_GLUE_END()

和现在github上的哪个新啊？

enter console command "restartlevel", then the game crashed. Crash message
" World /Game/TestMap.TestMap not cleaned up by garbage collection! "

is the plugin will upgrade to 4.20?
thanks

你好，没有找到类似LUA_GLUE_BEGIN的宏定义，是我下载的版本不对吗

Hi,
If I place a BP which Inherit from a C++ Actor in the editor, and the C++ Actor bind lua.
when I play, and change level by code, the engine crash,
because the level can't do Garbage collection.

If the C++ Actor don't bind lua, it is work well.

Please help.

UE4.21.2下 unreal.lua的master最新版貌似有一个bug：
如果一个StreamingLevel在一个PersistentLevel底下，这时该StreamingLevel里的ActorComponent调用自己的lua函数时会无法获取到GameInstance，从而导致LuaContext在每次调用lua函数时重新生成，从而无法成功执行lua函数。
需要把UnrealLuaInterface.cpp的477行代码：
UWorld* WorldBelong = Ins->GetTypedOuter();
改为：
UWorld *WorldBelong = GEngine->GetWorldFromContextObject(Ins, EGetWorldErrorMode::ReturnNull);

还有CppObjectBase.lua文件中的第35行：
self.OnEndPlay:Add(InsCallBack(self.EndPlay, self))
里的self.OnEndPlay是什么？我的脚本每次执行到这里就会出错，貌似没有这样的变量。我把这个文件中的三处OnEndPlay的位置删除掉才能正确执行。请问一下，我这样删除后有没有什么潜在的问题？

你好，打包到真机上的时候，LuaSource应该是找不到的，所以main找不到会崩溃，看nativeluafunc.h里main应该是通过loadobject加载的，这块有需要额外设置什么吗？
我看了代码能想到的是把LuaSource放到Content目录下，然后在打包设置Additional Non-Asset Directories to Package里面加上LuaSource，然后在GetLuaCodeFromPath函数里从打包文件里读出来。这样应该是可以在真机打包里拿到。
但我不知道你的工程这里是不是已经有某种别的办法？ 期待并感谢你的回答。

cannot download zip or clone repository. The files are broken. Is it a github issue? Is there anybody who can give a try?

UTableUtil::GetTempIns just can keep 10 ins, If lua ref C++ object, and in single functin or single class, it is very easy to over 10,
I need to new lua and copy ref C++ object to this new lua to avoid it, can any other way?

struct XX_API FRect2D
{
GENERATED_BODY()

UPROPERTY()
FVector2D origin;


UPROPERTY()
FVector2D size;

}

FRect2D test
FRect2D* pInfo = &test;
...
LuaCall("openInfoUI", this, *pInfo);

.lua

function openInfoUI(info)
local tmpOri = info:luaGet_origin()
local tmpX = info:luaGet_origin():luaGet_X()
end

error:
attempt to call method 'LuaGet_X' (a nil value)...

on lua debug,
the value of origin from "tmpOri" is wrong. the meta strcut of tmpOri is not FVector2D,which is FRect2D now.

please help,

https://wiki.unrealengine.com/How_to_package_your_game_with_commands

Please help,
I want to spawn a actor in lua, the cpp class is Inherited from AActor.
Thanks.

建议把Inherit函数里面的_WITH_EDITOR去掉，统一这个逻辑。实测手机上有时会找不到函数。

Hi, If I'm make some Chinese in a lua file, it is messy in android.