From 511f7841c9ccb6bbd341ec1e021aa11fb3e2c750 Mon Sep 17 00:00:00 2001
From: barnabasmolnar <barnabas@excalidraw.com>
Date: Wed, 13 Dec 2023 02:35:21 +0100
Subject: [PATCH] removed scene bounds cache

---
 src/index.ts | 27 ---------------------------
 1 file changed, 27 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index c5b63ef..635caec 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -46,14 +46,6 @@ try {
     allowEIO3: true,
   });
 
-  // we want to keep track of the last position of the followed user's scene
-  // bounds so that we can send it to the new follower without having to
-  // make an interaction on the scene
-  const withLatestSceneBounds = new Map<
-    string,
-    { data: ArrayBuffer; iv: Uint8Array }
-  >();
-
   io.on("connection", (socket) => {
     ioDebug("connection established!");
     io.to(`${socket.id}`).emit("init-room");
@@ -85,9 +77,6 @@ try {
     socket.on(
       "server-volatile-broadcast",
       (roomID: string, encryptedData: ArrayBuffer, iv: Uint8Array) => {
-        if (roomID.startsWith("follow_")) {
-          withLatestSceneBounds.set(roomID, { data: encryptedData, iv });
-        }
         socketDebug(`${socket.id} sends volatile update to ${roomID}`);
         socket.volatile.broadcast
           .to(roomID)
@@ -101,17 +90,6 @@ try {
         case "follow":
           await socket.join(roomID);
 
-          // Immediately send the latest scene bounds to the new follower
-          // without having to wait for a scene interaction
-          const latestSceneBounds = withLatestSceneBounds.get(roomID);
-          if (latestSceneBounds) {
-            io.to(socket.id).emit(
-              "client-broadcast",
-              latestSceneBounds.data,
-              latestSceneBounds.iv,
-            );
-          }
-
           const sockets = await io.in(roomID).fetchSockets();
           const followedBy = sockets.map((socket) => socket.id);
 
@@ -134,11 +112,6 @@ try {
             _followedBy,
           );
 
-          // cleanup
-          if (_sockets.length === 0) {
-            withLatestSceneBounds.delete(roomID);
-          }
-
           break;
       }
     });