Send chat messages to old clients serverpackethandler.cpp.diff

serverpackethandler.cpp.diff

--- a/src/network/serverpackethandler.cpp
+++ b/src/network/serverpackethandler.cpp
@@ -740,6 +740,14 @@ void Server::handleCommand_ClientReady(NetworkPacket* pkt)
                        peer_id, major_ver, minor_ver, patch_ver,
                        full_ver);

+       if (major_ver == 0) {
+               if (minor_ver < 4 || patch_ver < 13)
+                       SendChatMessage(pkt->getPeerId(), L"You're using an old Minetest version. Some features may not be available.");
+       } else
+               SendChatMessage(pkt->getPeerId(), L"You're using a weird Minetest version. We recommend Minetest 0.4.13 for the best results.");
+
        m_clients.event(peer_id, CSE_SetClientReady);
        m_script->on_joinplayer(playersao);
 }