这节课是P16,主要是创建了生命周期的五个回调和委托还有句柄

MultiPlayerSessionSubsystem.h

// Fill out your copyright notice in the Description page of Project Settings. #pragma once #include "CoreMinimal.h" #include "Subsystems/GameInstanceSubsystem.h" #include "Interfaces/OnlineSessionInterface.h" #include "MultiPlayerSessionSubsystem.generated.h" /** * */ UCLASS() class UMultiPlayerSessionSubsystem : public UGameInstanceSubsystem { GENERATED_BODY() public: UMultiPlayerSessionSubsystem(); /* * 这里是一个句柄,让菜单类可以访问Subsystem */ void CreateSession(int32 NumPublicConnections,FString MatchType); void FindSession(int32 MaxSearchResults); void JoinSession(const FOnlineSessionSearchResult& SessionResults); void DestroySession(); void StartSession(); protected: /* * 这里是委托 */ void CreateSessionComplete(FName SessionName, bool bWasSuccessful); void FindSessionsComplete(bool bWasSuccessful); void JoinSessionComplete(FName SessionName, EOnJoinSessionCompleteResult::Type Result); void DestroySessionComplete(FName SessionName, bool bWasSuccessful); void StartSessionComplete(FName SessionName, bool bWasSuccessful); private: IOnlineSessionPtr OnlineSessionInterface; /* * 添加OnlineSession委托到列表内 * 我们的游玩系统内部回调绑定到这里 * */ FOnCreateSessionCompleteDelegate CreateSessionCompleteDelegate; FDelegateHandle CreateSessionCompleteDelegate_Handle; FOnFindSessionsCompleteDelegate FindSessionsCompleteDelegate; FDelegateHandle FindSessionsCompleteDelegate_Handle; FOnJoinSessionCompleteDelegate JoinSessionCompleteDelegate; FDelegateHandle JoinSessionCompleteDelegate_Handle; FOnDestroySessionCompleteDelegate DestroySessionCompleteDelegate; FDelegateHandle DestroySessionCompleteDelegate_Handle; FOnStartSessionCompleteDelegate StartSessionCompleteDelegate; FDelegateHandle StartSessionCompleteDelegate_Handle; };

MultiPlayerSessionSubsystem.cpp

// Fill out your copyright notice in the Description page of Project Settings. #include "MultiPlayerSessionSubsystem.h" #include "OnlineSubsystem.h" UMultiPlayerSessionSubsystem::UMultiPlayerSessionSubsystem(): CreateSessionCompleteDelegate(FOnCreateSessionCompleteDelegate::CreateUObject(this,&ThisClass::CreateSessionComplete)), FindSessionsCompleteDelegate(FOnFindSessionsCompleteDelegate::CreateUObject(this,&ThisClass::FindSessionsComplete)), JoinSessionCompleteDelegate(FOnJoinSessionCompleteDelegate::CreateUObject(this,&ThisClass::JoinSessionComplete)), DestroySessionCompleteDelegate(FOnDestroySessionCompleteDelegate::CreateUObject(this,&ThisClass::DestroySessionComplete)), StartSessionCompleteDelegate(FOnStartSessionCompleteDelegate::CreateUObject(this,&ThisClass::StartSessionComplete)) { IOnlineSubsystem* OnlineSubsystem = IOnlineSubsystem::Get(); if(OnlineSubsystem) { OnlineSessionInterface = OnlineSubsystem->GetSessionInterface(); } } void UMultiPlayerSessionSubsystem::CreateSession(int32 NumPublicConnections, FString MatchType) { } void UMultiPlayerSessionSubsystem::FindSession(int32 MaxSearchResults) { } void UMultiPlayerSessionSubsystem::JoinSession(const FOnlineSessionSearchResult& SessionResults) { } void UMultiPlayerSessionSubsystem::DestroySession() { } void UMultiPlayerSessionSubsystem::StartSession() { } void UMultiPlayerSessionSubsystem::CreateSessionComplete(FName SessionName, bool bWasSuccessful) { } void UMultiPlayerSessionSubsystem::FindSessionsComplete(bool bWasSuccessful) { } void UMultiPlayerSessionSubsystem::JoinSessionComplete(FName SessionName, EOnJoinSessionCompleteResult::Type Result) { } void UMultiPlayerSessionSubsystem::DestroySessionComplete(FName SessionName, bool bWasSuccessful) { } void UMultiPlayerSessionSubsystem::StartSessionComplete(FName SessionName, bool bWasSuccessful) { }