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src/main/java/de/nexuslobby/modules/hologram/HologramModule.java

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+package de.nexuslobby.modules.hologram;
+
+import de.nexuslobby.NexusLobby;
+import de.nexuslobby.api.Module;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerChangedWorldEvent;
+import org.bukkit.event.player.PlayerInteractEntityEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class HologramModule implements Module, Listener {
+
+    private final Map<String, NexusHologram> holograms = new ConcurrentHashMap<>();
+    private File file;
+    private FileConfiguration config;
+
+    @Override
+    public String getName() { return "Holograms"; }
+
+    @Override
+    public void onEnable() {
+        loadConfig();
+        loadHolograms();
+        Bukkit.getPluginManager().registerEvents(this, NexusLobby.getInstance());
+
+        Bukkit.getScheduler().runTaskTimer(NexusLobby.getInstance(), () -> {
+            for (Player player : Bukkit.getOnlinePlayers()) {
+                holograms.values().forEach(h -> h.renderForPlayer(player));
+            }
+        }, 20L, 5L);
+    }
+
+    private void loadConfig() {
+        file = new File(NexusLobby.getInstance().getDataFolder(), "holograms.yml");
+        config = YamlConfiguration.loadConfiguration(file);
+    }
+
+    private void loadHolograms() {
+        holograms.values().forEach(NexusHologram::removeAll);
+        holograms.clear();
+        for (String id : config.getKeys(false)) {
+            World world = Bukkit.getWorld(config.getString(id + ".world", "world"));
+            if (world == null) continue;
+            Location loc = new Location(world, config.getDouble(id + ".x"), config.getDouble(id + ".y"), config.getDouble(id + ".z"));
+            
+            List<String> pages;
+            if (config.isList(id + ".text")) {
+                pages = config.getStringList(id + ".text");
+            } else {
+                pages = new ArrayList<>();
+                pages.add(config.getString(id + ".text", "No Text"));
+            }
+            
+            holograms.put(id, new NexusHologram(id, loc, pages));
+        }
+    }
+
+    @EventHandler
+    public void onInteract(PlayerInteractEntityEvent event) {
+        // Wir prüfen, ob auf ein Interaction-Entity geklickt wurde
+        for (NexusHologram holo : holograms.values()) {
+            if (holo.isInteractionEntity(event.getRightClicked().getUniqueId())) {
+                holo.nextPage(event.getPlayer());
+                break;
+            }
+        }
+    }
+
+    @EventHandler
+    public void onQuit(PlayerQuitEvent event) {
+        holograms.values().forEach(h -> h.removeForPlayer(event.getPlayer()));
+    }
+
+    @EventHandler
+    public void onWorldChange(PlayerChangedWorldEvent event) {
+        holograms.values().forEach(h -> h.removeForPlayer(event.getPlayer()));
+    }
+
+    @EventHandler
+    public void onJoin(PlayerJoinEvent event) {
+        // Cleanup alter Entities für den Joiner
+        Bukkit.getScheduler().runTaskLater(NexusLobby.getInstance(), () -> {
+            event.getPlayer().getWorld().getEntities().forEach(entity -> {
+                if (entity.getCustomName() != null && entity.getCustomName().startsWith("nexus_h_")) {
+                    if (!entity.getCustomName().endsWith("_" + event.getPlayer().getName())) {
+                        event.getPlayer().hideEntity(NexusLobby.getInstance(), entity);
+                    }
+                }
+            });
+        }, 5L);
+    }
+
+    public void createHologram(String id, Location loc, List<String> pages) {
+        config.set(id + ".world", loc.getWorld().getName());
+        config.set(id + ".x", loc.getX());
+        config.set(id + ".y", loc.getY());
+        config.set(id + ".z", loc.getZ());
+        config.set(id + ".text", pages);
+        try { config.save(file); } catch (IOException e) { e.printStackTrace(); }
+
+        NexusHologram holo = new NexusHologram(id, loc, pages);
+        holograms.put(id, holo);
+    }
+
+    public void removeHologram(String id) {
+        NexusHologram holo = holograms.remove(id);
+        if (holo != null) holo.removeAll();
+        config.set(id, null);
+        try { config.save(file); } catch (IOException e) { e.printStackTrace(); }
+    }
+
+    public Set<String> getHologramIds() { return config.getKeys(false); }
+
+    @Override
+    public void onDisable() {
+        holograms.values().forEach(NexusHologram::removeAll);
+        holograms.clear();
+    }
+}