Added a setting to be able to disable auto nether/end island pasting

https://github.com/BentoBoxWorld/BentoBox/issues/1063

Note that corresponding settings must be added to game mode addons.
Also, note that I added this as a default method so that it will not
break current older game mode addons.

src/main/java/world/bentobox/bentobox/api/configuration/WorldSettings.java

@@ -136,7 +136,7 @@ public interface WorldSettings extends ConfigObject {
      * @return the visitorBannedCommands
      */
     List<String> getVisitorBannedCommands();
-    
+
     /**
      * Optional list of commands that are banned when falling. Not applicable to all game modes so defaults to empty.
      * @return the fallingBannedCommands
@@ -413,4 +413,14 @@ public interface WorldSettings extends ConfigObject {
      * @since 1.9.0
      */
     boolean isCreateIslandOnFirstLoginAbortOnLogout();
+
+    /**
+     * Check if nether or end islands should be pasted on teleporting
+     * @return true if missing nether or end islands should be pasted
+     * @since 1.10.0
+     */
+    default boolean isPasteMissingIslands() {
+        // Note that glitches can enable bedrock to be removed in ways that will not generate events.
+        return true;
+    }
 }

src/main/java/world/bentobox/bentobox/listeners/PortalTeleportationListener.java

@@ -60,12 +60,12 @@ public class PortalTeleportationListener implements Listener {
         }
         World fromWorld = e.getFrom().getWorld();
         World overWorld = Util.getWorld(fromWorld);
-        
+
         if (fromWorld == null || !plugin.getIWM().inWorld(overWorld)) {
             // Do nothing special
             return false;
         }
-        
+
         // 1.14.4 requires explicit cancellation to prevent teleporting to the normal nether
         if (!plugin.getIWM().isEndGenerate(overWorld)) {
             e.setCancelled(true);
@@ -110,7 +110,9 @@ public class PortalTeleportationListener implements Listener {
         Location to = optionalIsland.map(i -> i.getSpawnPoint(Environment.THE_END)).orElse(e.getFrom().toVector().toLocation(endWorld));
         e.setCancelled(true);
         // Check if there is a missing end island
-        if (!plugin.getIWM().isUseOwnGenerator(overWorld) && plugin.getIWM().isEndGenerate(overWorld)
+        if (plugin.getIWM().pasteMissingIslands(overWorld)
+                && !plugin.getIWM().isUseOwnGenerator(overWorld)
+                && plugin.getIWM().isEndGenerate(overWorld)
                 && plugin.getIWM().isEndIslands(overWorld)
                 && plugin.getIWM().getEndWorld(overWorld) != null
                 && !optionalIsland.map(Island::hasEndIsland).orElse(true)) {
@@ -143,13 +145,13 @@ public class PortalTeleportationListener implements Listener {
             // Do nothing special
             return false;
         }
-        
+
         // 1.14.4 requires explicit cancellation to prevent teleporting to the normal nether
         if (!plugin.getIWM().isNetherGenerate(overWorld)) {
             e.setCancelled(true);
             return false;
         }
-        
+
         // STANDARD NETHER
         if (!plugin.getIWM().isNetherIslands(overWorld)) {
             if (fromWorld.getEnvironment() != Environment.NETHER) {
@@ -185,7 +187,8 @@ public class PortalTeleportationListener implements Listener {
         Location to = optionalIsland.map(i -> i.getSpawnPoint(Environment.NETHER)).orElse(e.getFrom().toVector().toLocation(nether));
         e.setCancelled(true);
         // Check if there is an island there or not
-        if (!plugin.getIWM().isUseOwnGenerator(overWorld) && plugin.getIWM().isNetherGenerate(overWorld)
+        if (plugin.getIWM().pasteMissingIslands(overWorld) &&
+                !plugin.getIWM().isUseOwnGenerator(overWorld) && plugin.getIWM().isNetherGenerate(overWorld)
                 && plugin.getIWM().isNetherIslands(overWorld)
                 && plugin.getIWM().getNetherWorld(overWorld) != null
                 && !optionalIsland.map(Island::hasNetherIsland).orElse(true)) {

src/main/java/world/bentobox/bentobox/managers/IslandWorldManager.java

@@ -828,4 +828,14 @@ public class IslandWorldManager {
     public boolean isCreateIslandOnFirstLoginAbortOnLogout(@NonNull World world) {
         return gameModes.containsKey(world) && gameModes.get(world).getWorldSettings().isCreateIslandOnFirstLoginAbortOnLogout();
     }
+
+    /**
+     * Check if nether or end islands should be pasted on teleporting
+     * @param world - over world
+     * @return true if missing nether or end islands should be pasted
+     * @since 1.10.0
+     */
+    public boolean pasteMissingIslands(@NonNull World world) {
+        return gameModes.containsKey(world) && gameModes.get(world).getWorldSettings().isPasteMissingIslands();
+    }
 }