Allow adapters to override World#getEntities to avoid AsyncCatcher

- Even if we access (cache) the entities synchronously, we'd then be doing stuff asynchronously so adapters can override this and either use the world#getEntities normally (pre 1.17) or get entities async anyway.

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/adapter/IBukkitAdapter.java

@@ -1,6 +1,7 @@
 package com.fastasyncworldedit.bukkit.adapter;
 
 import com.fastasyncworldedit.bukkit.util.BukkitItemStack;
+import com.fastasyncworldedit.core.util.TaskManager;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.NotABlockException;
 import com.sk89q.worldedit.blocks.BaseItemStack;
@@ -36,6 +37,7 @@ import org.bukkit.block.data.BlockData;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
+import java.util.List;
 import java.util.Locale;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -379,4 +381,8 @@ public interface IBukkitAdapter {
         );
     }
 
+    default List<org.bukkit.entity.Entity> getEntities(org.bukkit.World world) {
+        return TaskManager.IMP.sync(world::getEntities);
+    }
+
 }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -138,9 +138,10 @@ public class BukkitWorld extends AbstractWorld {
 
     @Override
     public List<com.sk89q.worldedit.entity.Entity> getEntities(Region region) {
-        World world = getWorld();
+        //FAWE start - allow async entity retrieval
+        List<Entity> ents = WorldEditPlugin.getInstance().getBukkitImplAdapter().getEntities(getWorld());
+        //FAWE end
 
-        List<Entity> ents = world.getEntities();
         List<com.sk89q.worldedit.entity.Entity> entities = new ArrayList<>();
         for (Entity ent : ents) {
             if (region.contains(BukkitAdapter.asBlockVector(ent.getLocation()))) {
@@ -153,7 +154,9 @@ public class BukkitWorld extends AbstractWorld {
     @Override
     public List<com.sk89q.worldedit.entity.Entity> getEntities() {
         List<com.sk89q.worldedit.entity.Entity> list = new ArrayList<>();
-        for (Entity entity : getWorld().getEntities()) {
+        //FAWE start - allow async entity retrieval
+        for (Entity entity : WorldEditPlugin.getInstance().getBukkitImplAdapter().getEntities(getWorld())) {
+            //FAWE end
             list.add(BukkitAdapter.adapt(entity));
         }
         return list;