Lyra项目流程图

\Lyra\Content\System\DefaultEditorMap\B_ExperienceList3D

1. 在项目设置中----->游戏----->资产管理器。在索引5 【LyraUserFacingExperienceDefinition】Lyra用户界面体验定义

2. // Copyright Epic Games, Inc. All Rights Reserved.
   
   #pragma once
   
   #include "Engine/DataAsset.h"
   
   #include "LyraUserFacingExperienceDefinition.generated.h"
   
   class FString;
   class UCommonSession_HostSessionRequest;
   class UObject;
   class UTexture2D;
   class UUserWidget;
   struct FFrame;
   
   /** 用于在用户界面中显示体验并开始新会话的设置描述 */
   UCLASS(BlueprintType)
   class ULyraUserFacingExperienceDefinition : public UPrimaryDataAsset
   {
   	GENERATED_BODY()
   
   public:
   	/** 需要加载的具体地图 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience, meta=(AllowedTypes="Map"))
   	FPrimaryAssetId MapID;
   
   	/** 加载的游戏体验 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience, meta=(AllowedTypes="LyraExperienceDefinition"))
   	FPrimaryAssetId ExperienceID;
   
   	/** 作为 URL 选项传递给游戏的额外参数 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	TMap<FString, FString> ExtraArgs;
   
   	/** UI 中的主标题 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	FText TileTitle;
   
   	/** 第二标题 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	FText TileSubTitle;
   
   	/** 完整描述 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	FText TileDescription;
   
   	/** UI 中使用的图标 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	TObjectPtr<UTexture2D> TileIcon;
   
   	/** 加载屏幕小部件，用于加载进入（或退出）特定体验时显示 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=LoadingScreen)
   	TSoftClassPtr<UUserWidget> LoadingScreenWidget;
   
   	/** 如果为真，则这是一个默认体验，应该用于快速游玩，并在 UI 中优先考虑 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	bool bIsDefaultExperience = false;
   
   	/** 如果为真，则会在前端的体验列表中显示 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	bool bShowInFrontEnd = true;
   
   	/** 如果为真，游戏的重播将被记录 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	bool bRecordReplay = false;
   
   	/** 本次会话的最大玩家人数 */
   	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category=Experience)
   	int32 MaxPlayerCount = 16;
   
   public:
   	/** 创建一个请求对象，用于使用这些设置实际开始一个会话 */
   	UFUNCTION(BlueprintCallable, BlueprintPure=false, meta = (WorldContext = "WorldContextObject"))
   	UCommonSession_HostSessionRequest* CreateHostingRequest(const UObject* WorldContextObject) const;
   };

   // Copyright Epic Games, Inc. All Rights Reserved.
   
   #include "LyraUserFacingExperienceDefinition.h"
   #include "CommonSessionSubsystem.h"
   #include "Containers/UnrealString.h"
   #include "UObject/NameTypes.h"
   #include "Engine/GameInstance.h"
   #include "Engine/Engine.h"
   #include "Replays/LyraReplaySubsystem.h"
   
   #include UE_INLINE_GENERATED_CPP_BY_NAME(LyraUserFacingExperienceDefinition)
   
   UCommonSession_HostSessionRequest* ULyraUserFacingExperienceDefinition::CreateHostingRequest(const UObject* WorldContextObject) const
   {
   	const FString ExperienceName = ExperienceID.PrimaryAssetName.ToString();
   	const FString UserFacingExperienceName = GetPrimaryAssetId().PrimaryAssetName.ToString();
   
   	UWorld* World = GEngine->GetWorldFromContextObject(WorldContextObject, EGetWorldErrorMode::ReturnNull);
   	UGameInstance* GameInstance = World ? World->GetGameInstance() : nullptr;
   	UCommonSession_HostSessionRequest* Result = nullptr;
   	
   	if (UCommonSessionSubsystem* Subsystem = GameInstance ? GameInstance->GetSubsystem<UCommonSessionSubsystem>() : nullptr)
   	{
   		Result = Subsystem->CreateOnlineHostSessionRequest();
   	}
   
   	if (!Result)
   	{
   		// 无法使用子系统，因此创建一个
   		Result = NewObject<UCommonSession_HostSessionRequest>();
   		Result->OnlineMode = ECommonSessionOnlineMode::Online;
   		Result->bUseLobbies = true;
   	}
   	Result->MapID = MapID;
   	Result->ModeNameForAdvertisement = UserFacingExperienceName;
   	Result->ExtraArgs = ExtraArgs;
   	Result->ExtraArgs.Add(TEXT("Experience"), ExperienceName);
   	Result->MaxPlayerCount = MaxPlayerCount;
   
   	if (ULyraReplaySubsystem::DoesPlatformSupportReplays())
   	{
   		if (bRecordReplay)
   		{
   			Result->ExtraArgs.Add(TEXT("DemoRec"), FString());
   		}
   	}
   
   	return Result;
   }

3. 体验定义的数据资产列表：

   DA_Convolution_ControlPoint、与你的队友一起保护控制点，增加你的得分并取得胜利。

   DA_ExamplePlaylist、示例播放列表

   DA_Expanse_TDM、在这个经典的对抗团队比赛中，找到并消灭足够的敌人以取胜。

   DA_Frontend、游戏的主菜单

   DA_ShooterGame_ShooterGym、ShooterCore 的小型测试关卡

   DA_ShooterGame_ShooterPerf、性能测试地图

   DA_TopDownArena_Multiplayer、在这款多人顶视角聚会游戏中，摧毁方块、收集增益道具，避免被炸毁！

   DA_TopDownArena_Splode、在这款顶视角聚会游戏中，摧毁方块、收集增益道具，避免被炸毁。