fixed player interactions in world and added default world for joining

.idea/misc.xml

@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="FrameworkDetectionExcludesConfiguration">
+    <file type="web" url="file://$PROJECT_DIR$" />
+  </component>
   <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>

src/main/java/eu/mhsl/minecraft/WorldMuseum/Main.java

@@ -14,9 +14,11 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
+import java.util.logging.Logger;
 
 public class Main extends JavaPlugin {
     private static Main instance;
+    private static final Logger LOGGER = Bukkit.getLogger();
 
     private final List<ViewableWorld> worlds = new ArrayList<>();
 
@@ -50,13 +52,11 @@ public class Main extends JavaPlugin {
         //noinspection ResultOfMethodCallIgnored
         worldFolder.mkdirs();
         Arrays.stream(Objects.requireNonNull(worldFolder.listFiles())).forEach(file -> {
-            Bukkit.getLogger().info("[Worldmuseum] Loading world " + file.getName());
+            LOGGER.info("[Worldmuseum] Loading world " + file.getName());
             if (file.isDirectory()) this.worlds.add(new ViewableWorld(file));
-            else Bukkit.getLogger().info( "[Worldmuseum] " + file.getName() + " is not a valid world!");
+            else LOGGER.info( "[Worldmuseum] " + file.getName() + " is not a valid world!");
         });
         this.worlds.forEach(ViewableWorld::loadWorld);
-        for(ViewableWorld viewableWorld : this.worlds) viewableWorld.getWorld().setAutoSave(false);
-
     }
 
     public static Main instance() {

src/main/java/eu/mhsl/minecraft/WorldMuseum/listener/PlayerListener.java

@@ -4,17 +4,24 @@ import eu.mhsl.minecraft.WorldMuseum.Main;
 import net.kyori.adventure.util.Ticks;
 import org.bukkit.Bukkit;
 import org.bukkit.GameMode;
+import org.bukkit.Material;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 
+import java.util.Objects;
+
 public class PlayerListener implements Listener {
     @EventHandler
     public void onJoin(PlayerJoinEvent event) {
         event.getPlayer().setGameMode(GameMode.SURVIVAL);
+        Main.instance().getWorlds().forEach(world -> {
+            if (world.isDefaultWorld()) world.addViewer(event.getPlayer());
+        });
         event.getPlayer().addPotionEffect(
             new PotionEffect(PotionEffectType.HASTE, PotionEffect.INFINITE_DURATION, 15, false, false, false)
         );
@@ -22,10 +29,15 @@ public class PlayerListener implements Listener {
 
     @EventHandler
     public void onBreak(BlockBreakEvent event) {
+        Material material = event.getBlock().getType();
         Bukkit.getScheduler().scheduleSyncDelayedTask(
             Main.instance(),
-            () -> event.getBlock().getWorld().getBlockAt(event.getBlock().getLocation()).setType(event.getBlock().getType()),
+            () -> Objects.requireNonNull(Bukkit.getWorld(event.getBlock().getWorld().getName())).setType(event.getBlock().getLocation(), material), Ticks.TICKS_PER_SECOND * 5
-            Ticks.TICKS_PER_SECOND * 5
         );
     }
+
+    @EventHandler
+    public void onPlace(BlockPlaceEvent event) {
+        event.setCancelled(true);
+    }
 }

src/main/java/eu/mhsl/minecraft/WorldMuseum/viewableWorld/ViewableWorld.java

@@ -21,6 +21,7 @@ public class ViewableWorld {
     private boolean enabled = true;
     private String name;
     private Material icon = Material.GRASS_BLOCK;
+    private boolean isDefaultWorld = false;
 
     public ViewableWorld(File worldLocation) {
         this.worldLocation = worldLocation;
@@ -31,14 +32,17 @@ public class ViewableWorld {
             this.enabled = config.getBoolean("enabled");
             this.name = config.getString("name");
             this.icon = Material.valueOf(config.getString("icon"));
+            this.isDefaultWorld = config.getBoolean("isDefaultWorld");
         } else {
             System.out.println("[WorldMuseum] Could not find config.yml");
             try {
+                //noinspection ResultOfMethodCallIgnored
                 configFile.createNewFile();
                 FileConfiguration data = YamlConfiguration.loadConfiguration(configFile);
                 data.set("enabled", false);
                 data.set("name", this.name);
                 data.set("icon", this.icon.name());
+                data.set("isDefaultWorld", false);
                 data.save(configFile);
 
             } catch (IOException e) {e.printStackTrace();}
@@ -53,6 +57,7 @@ public class ViewableWorld {
         this.world = worldCreator.createWorld();
         Objects.requireNonNull(this.world);
         this.world.setAutoSave(false);
+//        Bukkit.unloadWorld(this.world, false);
     }
 
     public void unloadWorld() {
@@ -76,7 +81,7 @@ public class ViewableWorld {
         return enabled;
     }
 
-    public World getWorld() {
+    public boolean isDefaultWorld() {
-        return world;
+        return isDefaultWorld;
     }
 }