Fix #647

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/ABlockMask.java

@@ -15,6 +15,10 @@ public abstract class ABlockMask extends AbstractExtentMask {
         super(extent);
     }
 
+    @Override public boolean test(Extent extent, BlockVector3 vector) {
+        return test(extent.getBlock(vector));
+    }
+
     @Override public boolean test(BlockVector3 vector) {
         return test(getExtent().getBlock(vector));
     }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/AbstractExtentMask.java

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.function.mask;
 
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.math.BlockVector3;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -59,4 +60,6 @@ public abstract class AbstractExtentMask extends AbstractMask {
         this.extent = extent;
     }
 
+    abstract public boolean test(Extent extent, BlockVector3 position);
+
 }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BlockCategoryMask.java

@@ -46,6 +46,11 @@ public class BlockCategoryMask extends AbstractExtentMask {
         return category.contains(getExtent().getBlock(vector));
     }
 
+    @Override
+    public boolean test(Extent extent, BlockVector3 vector) {
+        return category.contains(extent.getBlock(vector));
+    }
+
     @Nullable
     @Override
     public Mask2D toMask2D() {

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BlockStateMask.java

@@ -57,6 +57,11 @@ public class BlockStateMask extends AbstractExtentMask {
         return test(getExtent().getBlock(vector));
     }
 
+    @Override
+    public boolean test(Extent extent, BlockVector3 vector) {
+        return test(extent.getBlock(vector));
+    }
+
     public boolean test(BlockState block) {
         final Map<Property<Object>, Object> checkProps = cache
                 .computeIfAbsent(block.getBlockType(), (b -> Blocks.resolveProperties(states, b)));

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/BlockTypeMask.java

@@ -114,6 +114,11 @@ public class BlockTypeMask extends AbstractExtentMask {
         return test(getExtent().getBlock(vector).getBlockType());
     }
 
+    @Override
+    public boolean test(Extent extent, BlockVector3 vector) {
+        return test(extent.getBlock(vector).getBlockType());
+    }
+
     @Override
     public boolean replacesAir() {
         return hasAir;

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/DelegateExtentMask.java

@@ -1,11 +0,0 @@
-package com.sk89q.worldedit.function.mask;
-
-import com.boydti.fawe.object.function.mask.AbstractDelegateMask;
-
-public class DelegateExtentMask extends AbstractDelegateMask {
-
-    public DelegateExtentMask(Mask parent) {
-        super(parent);
-    }
-
-}

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/ExistingBlockMask.java

@@ -44,6 +44,11 @@ public class ExistingBlockMask extends AbstractExtentMask {
         return !getExtent().getBlock(vector).getBlockType().getMaterial().isAir();
     }
 
+    @Override
+    public boolean test(Extent extent, BlockVector3 vector) {
+        return !extent.getBlock(vector).getBlockType().getMaterial().isAir();
+    }
+
     @Nullable
     @Override
     public Mask2D toMask2D() {

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/SingleBlockTypeMask.java

@@ -1,6 +1,7 @@
 package com.sk89q.worldedit.function.mask;
 
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;