Ad hoc: Options to simulate a slow network

--adhoc-delay, --adhoc-jitter and --adhoc-loss (AdhocSimDelayMs, AdhocSimJitterMs and
AdhocSimLossPercent in the ini) delay and drop ad hoc traffic, in emulated time, to find games that
can't cope with a real network's latency.

They're a transport, NetSimTransport, around whichever one is in use, so they work the same for the
relay and P2P. PDP datagrams are held on arrival; PTP sends are held before they go, and a "lost" one
goes a retransmit interval later instead. PtpSendNow is new in the transports, for those delayed sends.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Core/CmdLine.cpp

@@ -262,6 +262,9 @@ static const CommandLineParam g_autoParams[] = {
 	{POFF(speedPercent), CmdParamType::Int, "speed", '\0', "With --realtime, run at this percentage of PSP speed (alternate speed 1)", CmdLineMode::Headless},
 	{POFF(adhocServer), CmdParamType::Bool, "adhoc-server", '\0', "Run the built-in ad hoc server"},
 	{POFF(nickname), CmdParamType::String, "nickname", '\0', "The PSP's nickname (System settings), for this run only"},
+	{POFF(adhocDelayMs), CmdParamType::Int, "adhoc-delay", '\0', "Delay ad hoc datagrams received by MS milliseconds of emulated time, to simulate a distant player"},
+	{POFF(adhocJitterMs), CmdParamType::Int, "adhoc-jitter", '\0', "With --adhoc-delay, up to MS more at random"},
+	{POFF(adhocLossPercent), CmdParamType::Int, "adhoc-loss", '\0', "Drop this percentage of the ad hoc datagrams received"},
 	{POFF(lagSync), CmdParamType::Bool, "lag-sync", '\0', "Keep emulated time in step with the wall clock every millisecond, not every frame (the Force real clock sync setting)"},
 	{POFF(frameStats), CmdParamType::Bool, "frame-stats", '\0', "Print flips per emulated second at the end of the run, counted from --state's load", CmdLineMode::Headless},
 	{POFF(maxScreenshotError), CmdParamType::Double, "max-mse", '\0', "Maximum allowed MSE error for screenshot comparison", CmdLineMode::Headless},
@@ -583,6 +586,18 @@ void CommandLineOptions::ApplyToConfig() const {
 		g_Config.sNickName = nickname.value();
 		g_Config.DoNotSaveSetting(&g_Config.sNickName);
 	}
+	if (adhocDelayMs.has_value()) {
+		g_Config.iAdhocSimDelayMs = adhocDelayMs.value();
+		g_Config.DoNotSaveSetting(&g_Config.iAdhocSimDelayMs);
+	}
+	if (adhocJitterMs.has_value()) {
+		g_Config.iAdhocSimJitterMs = adhocJitterMs.value();
+		g_Config.DoNotSaveSetting(&g_Config.iAdhocSimJitterMs);
+	}
+	if (adhocLossPercent.has_value()) {
+		g_Config.iAdhocSimLossPercent = adhocLossPercent.value();
+		g_Config.DoNotSaveSetting(&g_Config.iAdhocSimLossPercent);
+	}
 	if (lagSync.has_value()) {
 		g_Config.bForceLagSync = lagSync.value();
 		g_Config.DoNotSaveSetting(&g_Config.bForceLagSync);