[MODULAR] properly fixes titlescreen glitching in dreamseeker launch (#16222)

properly fixes titlescreen gltiching in dreamseeker launch

modular_skyrat/modules/title_screen/code/new_player.dm

@@ -1,3 +1,7 @@
+/mob/dead/new_player
+	/// Title screen is ready to receive signals
+	var/title_screen_is_ready = FALSE
+
 /mob/dead/new_player/Topic(href, href_list[])
 	if(src != usr)
 		return
@@ -111,6 +115,10 @@
 		vote_on_poll_handler(poll, href_list)
 		return
 
+	if(href_list["title_is_ready"])
+		title_screen_is_ready = TRUE
+		return
+
 
 /mob/dead/new_player/Login()
 	. = ..()

modular_skyrat/modules/title_screen/code/title_screen_html.dm

@@ -71,7 +71,7 @@ GLOBAL_LIST_EMPTY(startup_messages)
 				}
 
 				// Recalculate gap as a % within a % since they're nested.
-				const progress_sub_current_position = (progress_current_position - progress_sub_start) / progress_current_position * 100;
+				var progress_sub_current_position = (progress_current_position - progress_sub_start) / progress_current_position * 100;
 
 				progress_bar.style.width = "" + progress_current_position + "%";
 				sub_progress_bar.style.width = "" + progress_sub_current_position + "%";
@@ -164,7 +164,16 @@ GLOBAL_LIST_EMPTY(startup_messages)
 			function update_loading_progress() {}
 		</script>
 		"}
+
+	// Tell the server this page loaded.
+	dat += {"
+		<script>
+			var ready_request = new XMLHttpRequest();
+			ready_request.open("GET", "?src=\ref[src];title_is_ready=1", true);
+			ready_request.send();
+		</script>
+	"}
+
 	dat += "</body></html>"
 
 	return dat
-

modular_skyrat/modules/title_screen/code/title_screen_subsystem.dm

@@ -167,7 +167,10 @@ SUBSYSTEM_DEF(title)
  * * user - The user being updated
  * * name - the real name of the current slot.
  */
-/datum/controller/subsystem/title/proc/update_character_name(mob/user, name)
+/datum/controller/subsystem/title/proc/update_character_name(mob/dead/new_player/user, name)
+	if(!(istype(user) && user.title_screen_is_ready))
+		return
+
 	user.client << output(name, "title_browser:update_current_character")
 
 /**
@@ -193,7 +196,8 @@ SUBSYSTEM_DEF(title)
 	SStitle.startup_message_timings[msg] = new_timing
 
 	for(var/mob/dead/new_player/new_player in GLOB.new_player_list)
-		#ifndef LOWMEMORYMODE // Prevents the pre-load screen from running but ensures that the bare minimum of errors happen, doesn't happen on live
+		if(!new_player.title_screen_is_ready)
+			continue
+
 		new_player.client << output(msg_dat, "title_browser:append_terminal_text")
 		new_player.client << output(list2params(list(new_timing, SStitle.average_completion_time)), "title_browser:update_loading_progress")
-		#endif