1 files changed, 6 insertions, 0 deletions

diff --git a/js/lib/rdge/materials/flag-material.js b/js/lib/rdge/materials/flag-material.js
index 77991a8c..8d4d1ee3 100644
--- a/js/lib/rdge/materials/flag-material.js
+++ b/js/lib/rdge/materials/flag-material.js
@@ -23,6 +23,8 @@ var FlagMaterial = function FlagMaterial() {
     this._defaultWaveWidth = 1.0;
     this._defaultWaveHeight = 1.0;
 
+        this._hasVertexDeformation = true;
+
     ///////////////////////////////////////////////////////////////////////
     // Properties
     ///////////////////////////////////////////////////////////////////////
@@ -37,6 +39,10 @@ var FlagMaterial = function FlagMaterial() {
     this._propValues[ this._propNames[1] ] = this._defaultWaveWidth;
     this._propValues[ this._propNames[2] ] = this._defaultWaveHeight;
 
+        // a material can be animated or not. default is not.  
+        // Any material needing continuous rendering should override this method
+        this.isAnimated = function() {  return true;  };
+
     ///////////////////////////////////////////////////////////////////////
     // Methods
     ///////////////////////////////////////////////////////////////////////