Add exit menu in multiplayer mode

server.js

@@ -290,13 +290,34 @@ function startMatch() {
   });
 }
 
-function removePlayer(clientId) {
+function removePlayer(clientId, voluntaryLeave = false) {
   lobby.players = lobby.players.filter((p) => p.id !== clientId);
 
   if (lobby.phase === "game") {
-    const inRoster = lobby.roster.some((p) => p.id === clientId);
-    if (inRoster) {
-      endMatch("A player disconnected. Back to lobby.");
+    const rosterIndex = lobby.roster.findIndex((p) => p.id === clientId);
+    if (rosterIndex !== -1) {
+      const wasHost = clientId === lobby.hostId;
+      lobby.roster.splice(rosterIndex, 1);
+
+      if (wasHost) {
+        if (voluntaryLeave && lobby.roster.length > 0) {
+          lobby.hostId = lobby.roster[0].id;
+          broadcast({ type: "game_player_left", playerId: clientId });
+          broadcastLobbyState("Host left the round. New host assigned.");
+          return;
+        }
+
+        endMatch(voluntaryLeave ? "Host left the round. Back to lobby." : "Host disconnected. Back to lobby.");
+        return;
+      }
+
+      if (!voluntaryLeave) {
+        endMatch("A player disconnected. Back to lobby.");
+        return;
+      }
+
+      broadcast({ type: "game_player_left", playerId: clientId });
+      broadcastLobbyState("A player left the round.");
       return;
     }
   }
@@ -359,7 +380,7 @@ function handleMessage(client, msg) {
   }
 
   if (msg.type === "lobby_leave") {
-    removePlayer(client.id);
+    removePlayer(client.id, true);
     return;
   }
 
@@ -515,7 +536,7 @@ wss.on("connection", (ws) => {
   ws.on("close", () => {
     clientsBySocket.delete(ws);
     clientsById.delete(client.id);
-    removePlayer(client.id);
+    removePlayer(client.id, false);
   });
 
   ws.on("error", () => {

src/game.js

@@ -408,7 +408,7 @@ function getMenuItems() {
         return [
           { id: "nextRound", label: "Start Next Round" },
           { id: "music", label: `Music: ${audio && audio.isMusicEnabled() ? "On" : "Off"}` },
-          { id: "leaveMatch", label: "Leave Match" },
+          { id: "exitLobby", label: "Exit To Lobby" },
         ];
       }
       return [
@@ -419,7 +419,7 @@ function getMenuItems() {
     }
     return [
       { id: "music", label: `Music: ${audio && audio.isMusicEnabled() ? "On" : "Off"}` },
-      { id: "leaveMatch", label: "Leave Match" },
+      { id: "exitLobby", label: "Exit To Lobby" },
       { id: "close", label: "Close" },
     ];
   }
@@ -513,6 +513,12 @@ function activateMenuSelection() {
     return;
   }
 
+  if (item.id === "exitLobby") {
+    closeMenu();
+    leaveMultiplayerToLobby();
+    return;
+  }
+
   if (item.id === "leaveMatch") {
     closeMenu();
     leaveMultiplayerToMainMenu();
@@ -792,6 +798,27 @@ function handleSocketMessage(raw) {
     return;
   }
 
+  if (msg.type === "game_player_left") {
+    if (typeof msg.playerId !== "string") {
+      return;
+    }
+
+    network.activeRoster = network.activeRoster.filter((player) => player.id !== msg.playerId);
+    network.remoteInputs.delete(msg.playerId);
+    network.remoteBombPrev.delete(msg.playerId);
+
+    if (state.mode === "multiplayer" && state.screen === "game") {
+      const player = state.players.find((entry) => entry.ownerId === msg.playerId) || null;
+      if (player && player.alive) {
+        killPlayer(player, null);
+        showMatchNotification(player.name + " left the round.");
+      } else {
+        showMatchNotification("A player left the round.");
+      }
+    }
+    return;
+  }
+
   if (msg.type === "player_input") {
     if (!network.isHost || state.mode !== "multiplayer" || state.screen !== "game") {
       return;
@@ -883,6 +910,13 @@ function leaveMultiplayerToMainMenu() {
   state.message = "Select mode";
 }
 
+function leaveMultiplayerToLobby() {
+  sendSocketMessage("lobby_leave");
+  leaveLobbyInternals();
+  enterLobbyScreen();
+  state.message = "Returned to lobby.";
+}
+
 function leaveSinglePlayerToMainMenu() {
   closeMenu();
   inputState.bombQueued = false;
@@ -1001,7 +1035,6 @@ function serializeGameState(includeFullMap = false) {
     })),
     nextBombId: state.nextBombId,
     outcomePlayed: state.outcomePlayed,
-    menuOpen: state.menu.open,
   };
 }
 
@@ -1127,7 +1160,6 @@ function applySnapshot(snapshot) {
   }));
   state.nextBombId = snapshot.nextBombId;
   state.outcomePlayed = snapshot.outcomePlayed;
-  state.menu.open = snapshot.menuOpen;
   network.hasReceivedSnapshot = true;
   rebuildFireLookup();
 }
@@ -2682,14 +2714,14 @@ function onActionDown(action, isRepeat = false) {
   }
 
   if (action.type === "menu" && !isRepeat) {
-    if (state.mode === "multiplayer" && state.status === "running") {
-      return;
-    }
     if (state.menu.open) {
       closeMenu();
     } else {
       openMenu();
     }
+    if (state.mode === "multiplayer" && !network.isHost) {
+      sendLocalMultiplayerInput(true);
+    }
     return;
   }