Harden multiplayer networking and adapt frame timing

code/_event.cpp

@@ -0,0 +1,98 @@
+/*******************************************************************************
+ *                                O P E N  T S
+ *******************************************************************************
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright 2025 Electronic Arts Inc.
+ * Copyright 2026 OpenTS contributors
+ *
+ * Contains material derived from Electronic Arts source code.
+ * Modified by OpenTS contributors, 2026.
+ * EA's GPLv3 Section 7 additional terms and supplemental warranty
+ * disclaimers apply; see LICENSE.md.
+ ******************************************************************************/
+
+#include "always.h"
+
+#include "event.h"
+
+
+// This table is the compressed wire size of each event's data field.
+unsigned char EventClass::EventLength[EventClass::LAST_EVENT] = {
+	0,                                               // EMPTY
+	size_of(EventClass, Data.Target),                // POWERON
+	size_of(EventClass, Data.Target),                // POWEROFF
+	size_of(EventClass, Data.General),               // ALLY
+	size_of(EventClass, Data.MegaMission),           // MEGAMISSION
+	size_of(EventClass, Data.MegaMission_F),         // MEGAMISSION_F
+	size_of(EventClass, Data.Target),                // IDLE
+	size_of(EventClass, Data.Target),                // SCATTER
+	0,                                               // DESTRUCT
+	size_of(EventClass, Data.Target),                // DEPLOY
+	size_of(EventClass, Data.Place),                 // PLACE
+	0,                                               // OPTIONS
+	size_of(EventClass, Data.General),               // GAMESPEED
+	size_of(EventClass, Data.Specific),              // PRODUCE
+	size_of(EventClass, Data.Specific),              // SUSPEND
+	size_of(EventClass, Data.Specific),              // ABANDON
+	size_of(EventClass, Data.Target),                // PRIMARY
+	size_of(EventClass, Data.Special),               // SPECIAL_PLACE
+	0,                                               // EXIT
+	size_of(EventClass, Data.Anim),                  // ANIMATION
+	size_of(EventClass, Data.Target),                // REPAIR
+	size_of(EventClass, Data.Target),                // SELL
+	size_of(EventClass, Data.SellCell),              // SELLCELL
+	size_of(EventClass, Data.Options),               // SPECIAL
+	0,                                               // FRAMESYNC
+	0,                                               // MESSAGE
+	size_of(EventClass, Data.FrameInfo.Delay),       // RESPONSE_TIME
+	size_of(EventClass, Data.FrameInfo),             // FRAMEINFO
+	0,                                               // SAVEGAME
+	size_of(EventClass, Data.NavCom),                // ARCHIVE
+	size_of(EventClass, Data.Variable.Size),         // ADDPLAYER
+	size_of(EventClass, Data.Timing),                // TIMING
+	size_of(EventClass, Data.ProcessTime),           // PROCESS_TIME
+	0,                                               // PAGEUSER
+	size_of(EventClass, Data.General),               // REMOVEPLAYER
+	size_of(EventClass, Data.General),               // LATENCYFUDGE
+	size_of(EventClass, Data.NetworkReport),         // NETWORK_REPORT
+};
+
+char const * EventClass::EventNames[EventClass::LAST_EVENT] = {
+	"EMPTY",
+	"POWERON",
+	"POWEROFF",
+	"ALLY",
+	"MEGAMISSION",
+	"MEGAMISSION_F",
+	"IDLE",
+	"SCATTER",
+	"DESTRUCT",
+	"DEPLOY",
+	"PLACE",
+	"OPTIONS",
+	"GAMESPEED",
+	"PRODUCE",
+	"SUSPEND",
+	"ABANDON",
+	"PRIMARY",
+	"SPECIAL_PLACE",
+	"EXIT",
+	"ANIMATION",
+	"REPAIR",
+	"SELL",
+	"SELLCELL",
+	"SPECIAL",
+	"FRAMESYNC",
+	"MESSAGE",
+	"RESPONSE_TIME",
+	"FRAMEINFO",
+	"SAVEGAME",
+	"ARCHIVE",
+	"ADDPLAYER",
+	"TIMING",
+	"PROCESS_TIME",
+	"PAGEUSER",
+	"REMOVEPLAYER",
+	"LATENCYFUDGE",
+	"NETWORK_REPORT",
+};

code/combuf.h

@@ -59,6 +59,9 @@ struct SendQueueType {
 	unsigned int IsUndeliverable : 1;  /// 1 = gave up on it (retries or timeout)
 	unsigned int FirstTime;        // time this packet was first sent
 	unsigned int LastTime;         // time this packet was last sent
+	unsigned int FirstTimeMilliseconds = 0; // monotonic time of the first transmission
+	unsigned int LastTimeMilliseconds = 0;  // monotonic time of the latest transmission
+	unsigned int RetransmitTimeoutMilliseconds = 0; // base RTO captured for this packet
 	unsigned int SendCount;        // # of times this packet has been sent
 	int BufLen;                     // size of the packet stored in this entry
 	char *Buffer;                   // the data packet