Small change to clarify /island use outside of island worlds

locales/en-US.yml

@@ -130,6 +130,7 @@ commands:
       teleported: "&aTeleported you to home &e#[number]."
     help:
       description: "The main island command"
+      pick-world: "&cSpecify world from [worlds]"
     spawn:
       description: "teleport you to the spawn"
     create:

src/main/java/us/tastybento/bskyblock/api/commands/CompositeCommand.java

@@ -21,6 +21,7 @@ import us.tastybento.bskyblock.BSkyBlock;
 import us.tastybento.bskyblock.Settings;
 import us.tastybento.bskyblock.api.events.command.CommandEvent;
 import us.tastybento.bskyblock.api.user.User;
+import us.tastybento.bskyblock.managers.IslandWorldManager;
 import us.tastybento.bskyblock.managers.IslandsManager;
 import us.tastybento.bskyblock.managers.PlayersManager;
 import us.tastybento.bskyblock.util.Util;
@@ -263,6 +264,13 @@ public abstract class CompositeCommand extends Command implements PluginIdentifi
         return plugin;
     }
 
+    /**
+     * Get the island worlds manager
+     * @return island worlds manager
+     */
+    public IslandWorldManager getIWM() {
+        return plugin.getIWM();
+    }
     /**
      * @return Settings object
      */

src/main/java/us/tastybento/bskyblock/commands/IslandCommand.java

@@ -69,6 +69,11 @@ public class IslandCommand extends CompositeCommand {
             return false;
         }
         if (args.isEmpty()) {
+            // Check if not in world. If multiple worlds, then tell user to pick one
+            if (!getIWM().inWorld(user.getLocation()) && getIWM().getOverWorlds().size() > 1) {
+                user.sendMessage("commands.island.help.pick-world", "[worlds]", getIWM().getFriendlyNames());
+                return false;
+            }
             // If in world, go
             if (getPlugin().getIslands().hasIsland(user.getWorld(), user.getUniqueId())) {
                 return getSubCommand("go").map(goCmd -> goCmd.execute(user, new ArrayList<>())).orElse(false);

src/main/java/us/tastybento/bskyblock/managers/IslandWorldManager.java

@@ -396,5 +396,17 @@ public class IslandWorldManager {
         World w = Util.getWorld(world);
         return (worldSettings.containsKey(w) && !worldSettings.get(w).isDragonSpawn()) ? false : true;
     }
+
+    /**
+     * @return a comma separated string of friendly world names
+     */
+    public String getFriendlyNames() {
+        StringBuilder r = new StringBuilder();
+        worlds.values().forEach(n -> r.append(n).append(", "));
+        if (r.length() > 0) {
+            r.setLength(r.length() - 2);
+        }
+        return r.toString();
+    }
     
 }