Add persistent Discord URL to T5 and T6 HUDs

t6/scripts/tws_t6_hud.gsc

@@ -1,4 +1,4 @@
-/* tws_t6_hud.gsc - configurable HUD stack: timers, zombie count, health bar. */
+/* tws_t6_hud.gsc - top-left Discord URL, timers, zombie count and health bar. */
 
 #include maps\mp\_utility;
 #include common_scripts\utility;
@@ -16,6 +16,21 @@ init()
     level thread game_over_watcher();
 
     scripts\zm\tws_t6_common::register_spawn_handler(::hud_start);
+    scripts\zm\tws_t6_common::register_connect_handler(::hud_discord);
+}
+
+// One static label per connection, including newcomers waiting to spawn.
+hud_discord()
+{
+    self endon("disconnect");
+
+    label = scripts\zm\tws_t6_common::make_text_elem(
+        self, 10, 10, "left", level.hud_font_small, level.hud_c_label);
+    label SetText("https://discord.thewrightserver.net");
+
+    elems = [];
+    elems[elems.size] = label;
+    self thread scripts\zm\tws_t6_common::destroy_on_disconnect(elems);
 }
 
 hud_start()