Check permission when using BrushTool

core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java

@@ -48,6 +48,7 @@ public class BrushSettings {
     private double size = 1;
     private Set<String> permissions;
     private ScrollAction scrollAction;
+    private String lastWorld;
 
     public BrushSettings() {
         this.permissions = new HashSet<>();
@@ -209,6 +210,20 @@ public class BrushSettings {
         return this;
     }
 
+    /**
+     * Set the world the brush is being used in
+     * @param world
+     * @return true if the world differs from the last used world
+     */
+    public boolean setWorld(String world) {
+        boolean result = false;
+        if (this.lastWorld != null && !this.lastWorld.equalsIgnoreCase(world)) {
+            result = true;
+        }
+        this.lastWorld = world;
+        return result;
+    }
+
     public Brush getBrush() {
         return brush;
     }

core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java

@@ -19,6 +19,7 @@ import com.boydti.fawe.object.mask.MaskedTargetBlock;
 import com.boydti.fawe.object.pattern.PatternTraverser;
 import com.boydti.fawe.util.EditSessionBuilder;
 import com.boydti.fawe.util.MaskTraverser;
+import com.boydti.fawe.util.StringMan;
 import com.boydti.fawe.util.TaskManager;
 import com.google.gson.Gson;
 import com.google.gson.reflect.TypeToken;
@@ -441,12 +442,17 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
         if (brush == null) return false;
 
         EditSession editSession = session.createEditSession(player);
+        if (current.setWorld(editSession.getWorld().getName()) && !current.canUse(player)) {
+            BBC.NO_PERM.send(player, StringMan.join(current.getPermissions(), ","));
+            return false;
+        }
+
         Vector target = getPosition(editSession, player);
 
         if (target == null) {
             editSession.cancel();
             BBC.NO_BLOCK.send(player);
-            return true;
+            return false;
         }
         BlockBag bag = session.getBlockBag(player);
         Request.request().setEditSession(editSession);