Fix old style of backgrounds.yaml not being supported with this PR

Fix formatting issues with /bgs changes

server/commands/areas.py

@@ -106,14 +106,14 @@ def ooc_cmd_bgs(client, arg):
     Usage: /bgs category
     """
     if arg == "":
-        msg = "Available backgrounds:\n"
+        msg = "Available Categories:"
         for category in client.area.server.backgrounds_categories:
-            msg += f"\n{category};"
+            msg += f"\n{category}"
         client.send_ooc(msg)
     elif arg in client.server.backgrounds_categories:
-        msg = f"Available {arg} backgrounds:\n"
+        msg = f"Backgrounds in Category '{arg}':"
         for bg in client.server.backgrounds_categories[arg]:
-            msg += f"\n{bg};"
+            msg += f"\n{bg}"
         client.send_ooc(msg)
     else:
         client.send_ooc("There is no category with this name in server background list.")

server/tsuserver.py

@@ -320,8 +320,15 @@ def load_music(self):
     def load_backgrounds(self):
         """Load the backgrounds list from a YAML file."""
         with open("config/backgrounds.yaml", "r", encoding="utf-8") as bgs:
-            self.backgrounds_categories = yaml.safe_load(bgs)
-            self.backgrounds = list(self.backgrounds_categories.values())
+            bg_yaml = yaml.safe_load(bgs)
+            # old style of backgrounds.yaml
+            if type(bg_yaml) is list:
+                self.backgrounds_categories = {"backgrounds": bg_yaml}
+                self.backgrounds = bg_yaml
+            # new style of categorized backgrounds.yaml
+            else:
+                self.backgrounds_categories = bg_yaml
+                self.backgrounds = list(self.backgrounds_categories.values())
 
     def load_server_links(self):
         """Load the server links list from a YAML file."""