LyraGameMode深入理解
<h2>前置学习</h2>
<p><a href="https://docs.unrealengine.com/4.27/zh-CN/InteractiveExperiences/Framework/GameMode/" title="GameMode官方文档">GameMode官方文档</a>
<a href="https://blog.csdn.net/qq_33500238/article/details/99674576" title="其它资料">其它资料</a></p>
<h3>重点总结</h3>
<p>GameMode只存在于服务端，不会同步到客户端。需要同步的数据是通过GameState去同步的
GmaeMode主要业务：</p>
<ul>
<li>现有的玩家和观众人数，以及允许的最大球员和观众人数。</li>
<li>玩家怎样进入游戏，其中包括选择生成位置和其他生成/重生行为的规则。</li>
<li>是否可以暂停游戏，以及如何开始游戏的暂停。</li>
<li>关卡之间的切换，包括游戏是否应该以电影模式启动。</li>
</ul>
<h4>GameMode创建</h4>
<pre><code class="language-cpp">bool UWorld::SetGameMode(const FURL& InURL)
{
if (!IsNetMode(NM_Client) && !AuthorityGameMode)
{
AuthorityGameMode = GetGameInstance()->CreateGameModeForURL(InURL, this);
if( AuthorityGameMode != NULL )
{
return true;
}
else
{
UE_LOG(LogWorld, Error, TEXT("Failed to spawn GameMode actor."));
return false;
}
}
return false;
}</code></pre>
<h4>AGameModeBase 关注的类型</h4>
<pre><code class="language-cpp">DefaultPawnClass = ADefaultPawn::StaticClass();
PlayerControllerClass = APlayerController::StaticClass();
PlayerStateClass = APlayerState::StaticClass();
GameStateClass = AGameStateBase::StaticClass();
HUDClass = AHUD::StaticClass();
GameSessionClass = AGameSession::StaticClass();
SpectatorClass = ASpectatorPawn::StaticClass();
ReplaySpectatorPlayerControllerClass = APlayerController::StaticClass();
ServerStatReplicatorClass = AServerStatReplicator::StaticClass();</code></pre>
<h3>关键调用顺序</h3>
<h4>0. AGameModeBase::AGameModeBase</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=2161c8b357c56608e4df1ca7a4bf0ed5&file=file.png" alt="" /></p>
<h4>1. AGameModeBase::InitGame</h4>
<ul>
<li>创建GameSession</li>
</ul>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=a7f8dcc3f2ef24cef2b2277902cba8f4&file=file.png" alt="" /></p>
<h4>2. AGameModeBase::PreInitializeComponents()</h4>
<ul>
<li>创建了GameState</li>
<li>创建了NetworkManager</li>
</ul>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=893b0f6d45cf0f0a815480981adf3122&file=file.png" alt="" /></p>
<h5>2.1 AGameModeBase::InitGameState</h5>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=770b26cf391db5b7691c6ab7304244ea&file=file.png" alt="" /></p>
<h4>3 AGameModeBase::Login</h4>
<ul>
<li>创建PlayerController
<img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=426326649b5ccfb163ff006eda30b5af&file=file.png" alt="" /></li>
</ul>
<h5>3.1 AGameModeBase::SpawnPlayerController</h5>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=b5dd3552eb2237976a3d3b4b1de96a0b&file=file.png" alt="" /></p>
<h6>3.1.1 AGameModeBase::AllowCheats</h6>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=918060f5fe79501f3225674dd21761c6&file=file.png" alt="" /></p>
<h4>3.2 AGameModeBase::InitNewPlayer</h4>
<ul>
<li>注册PlayerControler to GameSession</li>
<li>Find a starting spot</li>
<li>Set up spectating</li>
<li>Init player's name</li>
</ul>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=6ef33aad9466168a1142b5112349a063&file=file.png" alt="" /></p>
<h5>3.2.1 AGameModeBase::UpdatePlayerStartSpot</h5>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=e8ed7bdb381b9657f83b64fe4084e8cf&file=file.png" alt="" /></p>
<h4>3.2.1.1 AGameModeBase::FindPlayerStart_Implementation</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=7e8c16923f4ef4e3c46dfcf78c196b49&file=file.png" alt="" /></p>
<h4>AGameModeBase::ShouldSpawnAtStartSpot</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=502517e57aff91d0cd4eb935ea59ad6d&file=file.png" alt="" /></p>
<h4>AGameModeBase::ChoosePlayerStart_Implementation</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=84b62ac0bcca00a3e5f22b0e5b27e014&file=file.png" alt="" /></p>
<h4>AGameModeBase::MustSpectate_Implementation</h4>
<h4>AGameModeBase::ChangeName</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=c6e8ab4912500bedab085ec87c6e8357&file=file.png" alt="" /></p>
<h4>4. AGameModeBase::PostLogin</h4>
<ul>
<li>通用PlayerContrller初始化，HUD，声音、语音、地图流式加载、电影模式</li>
<li>设置网络带宽</li>
<li>设置是不是观察者</li>
<li>加入Replay</li>
<li>通知GameSession->PostLogin， PostLogin事件</li>
<li>创建PLayer's Pawn，占用起点</li>
</ul>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=6d1437806911a4b7205b083f058493f0&file=file.png" alt="" /></p>
<h4>AGameModeBase::GenericPlayerInitialization</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=e712bf0b29af618ba53257a7f4914e48&file=file.png" alt="" /></p>
<h4>AGameModeBase::InitializeHUDForPlayer_Implementatio</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=f7c86349c5437587827a02a694617fbf&file=file.png" alt="" /></p>
<h4>AGameModeBase::UpdateGameplayMuteList</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=e623085811ef326985f01c1492788ff8&file=file.png" alt="" /></p>
<h4>AGameModeBase::ReplicateStreamingStatus</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=0d62f33c894bf9ff9f96be2477bc6115&file=file.png" alt="" /></p>
<h5>AGameModeBase::ShouldStartInCinematicMode</h5>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=cbed6bfaee6f2022ad45804c7536bfe2&file=file.png" alt="" /></p>
<h4>AGameModeBase::DispatchPostLogin</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=40bad14105de2393a319b5ecf288771f&file=file.png" alt="" /></p>
<h4>AGameModeBase::HandleStartingNewPlayer_Implementation</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=36ece94498ed020f52d6770115679858&file=file.png" alt="" /></p>
<h4>AGameModeBase::MustSpectate_Implementation</h4>
<h4>AGameModeBase::PlayerCanRestart_Implementation</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=f71057aad6e813611c82b4ee50a277cc&file=file.png" alt="" /></p>
<h4>AGameModeBase::RestartPlayer</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=aa43e0bce2b6edcf3593e147c0d29400&file=file.png" alt="" /></p>
<h4>AGameModeBase::SpawnDefaultPawnFor_Implementation</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=21356c90ec6eda88e264ba500d5eeae8&file=file.png" alt="" /></p>
<h4>AGameModeBase::SetPlayerDefaults</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=808cceeaa41af2521bff7a996d3ccb9f&file=file.png" alt="" /></p>
<h4>AGameModeBase::StartPlay()</h4>
<p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=33440051e94099b4414df4e704f0a374&file=file.png" alt="" /></p>
<h4>AGameModeBase::Logout</h4>