Allow copyEntities to be used in ForwardExtentCopy again.

The -e flag should now work for //copy and //cut as it used to.

Fixes WORLDEDIT-3557.

worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java

@@ -70,7 +70,7 @@ public class ClipboardCommands {
         desc = "Copy the selection to the clipboard",
         help = "Copy the selection to the clipboard\n" +
                 "Flags:\n" +
-                "  -e controls whether entities are copied\n" +
+                "  -e will also copy entities\n" +
                 "  -m sets a source mask so that excluded blocks become air\n" +
                 "WARNING: Pasting entities cannot yet be undone!",
         min = 0,
@@ -84,6 +84,7 @@ public class ClipboardCommands {
         BlockArrayClipboard clipboard = new BlockArrayClipboard(region);
         clipboard.setOrigin(session.getPlacementPosition(player));
         ForwardExtentCopy copy = new ForwardExtentCopy(editSession, region, clipboard, region.getMinimumPoint());
+        copy.setCopyingEntities(copyEntities);
         if (mask != null) {
             copy.setSourceMask(mask);
         }
@@ -100,10 +101,9 @@ public class ClipboardCommands {
         desc = "Cut the selection to the clipboard",
         help = "Copy the selection to the clipboard\n" +
                 "Flags:\n" +
-                "  -e controls whether entities are copied\n" +
+                "  -e will also cut entities\n" +
                 "  -m sets a source mask so that excluded blocks become air\n" +
                 "WARNING: Cutting and pasting entities cannot yet be undone!",
-        min = 0,
         max = 1
     )
     @CommandPermissions("worldedit.clipboard.cut")
@@ -116,6 +116,8 @@ public class ClipboardCommands {
         clipboard.setOrigin(session.getPlacementPosition(player));
         ForwardExtentCopy copy = new ForwardExtentCopy(editSession, region, clipboard, region.getMinimumPoint());
         copy.setSourceFunction(new BlockReplace(editSession, leavePattern));
+        copy.setCopyingEntities(copyEntities);
+        copy.setRemovingEntities(true);
         if (mask != null) {
             copy.setSourceMask(mask);
         }

worldedit-core/src/main/java/com/sk89q/worldedit/function/operation/ForwardExtentCopy.java

@@ -58,6 +58,7 @@ public class ForwardExtentCopy implements Operation {
     private int repetitions = 1;
     private Mask sourceMask = Masks.alwaysTrue();
     private boolean removingEntities;
+    private boolean copyingEntities = true; // default to true for backwards compatibility, sort of
     private RegionFunction sourceFunction = null;
     private Transform transform = new Identity();
     private Transform currentTransform = null;
@@ -183,6 +184,24 @@ public class ForwardExtentCopy implements Operation {
         this.repetitions = repetitions;
     }
 
+    /**
+     * Return whether entities should be copied along with blocks.
+     *
+     * @return true if copying
+     */
+    public boolean isCopyingEntities() {
+        return copyingEntities;
+    }
+
+    /**
+     * Set whether entities should be copied along with blocks.
+     *
+     * @param copyingEntities true if copying
+     */
+    public void setCopyingEntities(boolean copyingEntities) {
+        this.copyingEntities = copyingEntities;
+    }
+
     /**
      * Return whether entities that are copied should be removed.
      *
@@ -229,14 +248,18 @@ public class ForwardExtentCopy implements Operation {
             RegionFunction function = sourceFunction != null ? new CombinedRegionFunction(filter, sourceFunction) : filter;
             RegionVisitor blockVisitor = new RegionVisitor(region, function);
 
-            ExtentEntityCopy entityCopy = new ExtentEntityCopy(from, destination, to, currentTransform);
-            entityCopy.setRemoving(removingEntities);
-            List<? extends Entity> entities = source.getEntities(region);
-            EntityVisitor entityVisitor = new EntityVisitor(entities.iterator(), entityCopy);
-
             lastVisitor = blockVisitor;
             currentTransform = currentTransform.combine(transform);
-            return new DelegateOperation(this, new OperationQueue(blockVisitor, entityVisitor));
+
+            if (copyingEntities) {
+                ExtentEntityCopy entityCopy = new ExtentEntityCopy(from, destination, to, currentTransform);
+                entityCopy.setRemoving(removingEntities);
+                List<? extends Entity> entities = source.getEntities(region);
+                EntityVisitor entityVisitor = new EntityVisitor(entities.iterator(), entityCopy);
+                return new DelegateOperation(this, new OperationQueue(blockVisitor, entityVisitor));
+            } else {
+                return new DelegateOperation(this, blockVisitor);
+            }
         } else {
             return null;
         }