From: Raphaël Jakse <raphael.trivabble@jakse.fr>
Date: Fri, 1 May 2020 16:51:13 +0000 (+0200)
Subject: Server: disallow moving from an empty location
X-Git-Url: https://secure.softndesign.org/git/?a=commitdiff_plain;h=4c63ee2646563a0ff92597a213fdca3e26805674;p=trivabble.git

Server: disallow moving from an empty location
---

diff --git a/trivabble-server.js b/trivabble-server.js
index 6f511e3..e7333b7 100644
--- a/trivabble-server.js
+++ b/trivabble-server.js
@@ -567,6 +567,12 @@ function handleCommand(cmdNumber, message, response) {
                     }
 
                     letter = rack[cmd.indexFrom];
+
+                    if (!letter) {
+                        reply(message, response, cmdNumber, {error: 1, reason: "Moving from an empty location"});
+                        return false;
+                    }
+
                     operations.push(() => {
                         rack[cmd.indexFrom] = "";
                     });