From: Carl Worth <cworth@cworth.org>
Date: Sat, 30 May 2020 03:55:30 +0000 (-0700)
Subject: tictactoe: Replay previous moves when a new client connects
X-Git-Url: https://git.cworth.org/git?a=commitdiff_plain;ds=sidebyside;h=212b5a93209741c091d2f504f3d2edac8ae98262;hp=ea14cbbefb26afd558aff8329d92f1a7b9442bac;p=empires-server

tictactoe: Replay previous moves when a new client connects

This fixes the bug where a client would join a game in progress but
would see only the blank board.
---

diff --git a/tictactoe.js b/tictactoe.js
index 79d7350..6d4b014 100644
--- a/tictactoe.js
+++ b/tictactoe.js
@@ -27,6 +27,15 @@ class TicTacToe extends Game {
   broadcast_move(square) {
     this.broadcast_event("move", square);
   }
+
+  handle_events(request, response) {
+    super.handle_events(request, response);
+
+    /* When a new client joins, replay all previous moves to it. */
+    for (let move of this.moves) {
+      response.write(`event: move\ndata: ${move}\n\n`);
+    }
+  }
 }
 
 router.get('/', (request, response) => {