*

worldedit-core/src/main/java/com/sk89q/worldedit/BlockVector.java

@@ -73,6 +73,11 @@ public class BlockVector extends Vector {
         super(x, y, z);
     }
 
+    @Override
+    public int hashCode() {
+        return ((int) x ^ ((int) z << 12)) ^ ((int) y << 24);
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (!(obj instanceof Vector)) {

worldedit-core/src/main/java/com/sk89q/worldedit/BlockVector2D.java

@@ -69,6 +69,11 @@ public class BlockVector2D extends Vector2D {
         super(x, z);
     }
 
+    @Override
+    public int hashCode() {
+        return ((int) x << 16) ^ (int) z;
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (!(obj instanceof Vector2D)) {