various fixes, better worldhandling

src/main/java/eu/mhsl/craftattack/worldmuseum/items/CompassManager.java

@@ -0,0 +1,34 @@
+package eu.mhsl.craftattack.worldmuseum.items;
+
+import eu.mhsl.craftattack.worldmuseum.worlds.World;
+import eu.mhsl.craftattack.worldmuseum.worlds.WorldManager;
+import net.kyori.adventure.text.Component;
+import net.minestom.server.inventory.Inventory;
+import net.minestom.server.inventory.InventoryType;
+import net.minestom.server.item.ItemStack;
+import net.minestom.server.item.Material;
+public class CompassManager {
+    static CompassManager instance;
+    ItemStack compass;
+    Inventory inventory;
+    public static CompassManager getInstance() {
+        if (instance == null) instance = new CompassManager();
+        return instance;
+    }
+    public void loadCommpassManager() {
+        compass = ItemStack.builder(Material.COMPASS).displayName(Component.text("World-changer")).build();
+        inventory = new Inventory(InventoryType.CHEST_1_ROW, Component.text("World-changer"));
+
+        for (World w : WorldManager.getInstance().getWorlds()) {
+            inventory.addItemStack(w.getItem());
+        }
+    }
+
+    public ItemStack getCompass() {
+        return compass;
+    }
+
+    public Inventory getInventory() {
+        return inventory;
+    }
+}