Fix Resurrect Illegal Player State/Crash (#8349)

Source/msg.cpp

@@ -1905,18 +1905,38 @@ size_t OnKnockback(const TCmdParam1 &message, Player &player)
 	return sizeof(message);
 }
 
-size_t OnResurrect(const TCmdParam1 &message, Player &player)
+size_t OnResurrect(const TCmdParam1 &message, Player &caster)
 {
 	const uint16_t playerIdx = Swap16LE(message.wParam1);
 
 	if (gbBufferMsgs == 1) {
-		BufferMessage(player, &message, sizeof(message));
-	} else if (playerIdx < Players.size()) {
-		DoResurrect(player, Players[playerIdx]);
-		if (&player == MyPlayer)
-			pfile_update(true);
+		BufferMessage(caster, &message, sizeof(message));
+		return sizeof(message);
 	}
 
+	if (playerIdx >= Players.size())
+		return sizeof(message);
+
+	Player &target = Players[playerIdx];
+
+	SpawnResurrectBeam(caster, target);
+
+	if (&target == MyPlayer && target._pHitPoints <= 0) {
+		NetSendCmd(true, CMD_PLRALIVE);
+	}
+
+	return sizeof(message);
+}
+
+size_t OnPlayerAlive(const TCmd &message, Player &target)
+{
+	if (gbBufferMsgs == 1) {
+		BufferMessage(target, &message, sizeof(message));
+		return sizeof(message);
+	}
+
+	ApplyResurrect(target);
+
 	return sizeof(message);
 }
 
@@ -3390,6 +3410,8 @@ size_t ParseCmd(uint8_t pnum, const TCmd *pCmd, size_t maxCmdSize)
 		return HandleCmd(OnMonstDamage, player, pCmd, maxCmdSize);
 	case CMD_PLRDEAD:
 		return HandleCmd(OnPlayerDeath, player, pCmd, maxCmdSize);
+	case CMD_PLRALIVE:
+		return HandleCmd(OnPlayerAlive, player, pCmd, maxCmdSize);
 	case CMD_PLRDAMAGE:
 		return HandleCmd(OnPlayerDamage, player, pCmd, maxCmdSize);
 	case CMD_OPENDOOR:

Source/msg.h

@@ -205,6 +205,10 @@ enum _cmd_id : uint8_t {
 	// body (TCmdParam1):
 	//    int16_t ear_flag
 	CMD_PLRDEAD,
+	// Player resurrection.
+	//
+	// body (TCmd)
+	CMD_PLRALIVE,
 	// Lift item to hand request.
 	//
 	// body (TCmdGItem)

Source/spells.cpp

@@ -232,13 +232,21 @@ void CastSpell(Player &player, SpellID spl, WorldTilePosition src, WorldTilePosi
 	}
 }
 
-void DoResurrect(Player &player, Player &target)
+void SpawnResurrectBeam(Player &caster, Player &target)
 {
-	AddMissile(target.position.tile, target.position.tile, Direction::South, MissileID::ResurrectBeam, TARGET_MONSTERS, player, 0, 0);
-
-	if (!target.hasNoLife())
-		return;
+	AddMissile(
+	    target.position.tile,
+	    target.position.tile,
+	    Direction::South,
+	    MissileID::ResurrectBeam,
+	    TARGET_MONSTERS,
+	    caster.getId(),
+	    0,
+	    0);
+}
 
+void ApplyResurrect(Player &target)
+{
 	if (&target == MyPlayer) {
 		MyPlayerIsDead = false;
 		gamemenu_off();

Source/spells.h

@@ -36,12 +36,8 @@ SpellCheckResult CheckSpell(const Player &player, SpellID sn, SpellType st, bool
  */
 void EnsureValidReadiedSpell(Player &player);
 void CastSpell(Player &player, SpellID spl, WorldTilePosition src, WorldTilePosition dst, int spllvl);
-
-/**
- * @param pnum player index
- * @param rid target player index
- */
-void DoResurrect(Player &player, Player &target);
+void SpawnResurrectBeam(Player &caster, Player &target);
+void ApplyResurrect(Player &target);
 void DoHealOther(const Player &caster, Player &target);
 int GetSpellBookLevel(SpellID s);
 int GetSpellStaffLevel(SpellID s);