diff --git a/stepmania/src/Actor.cpp b/stepmania/src/Actor.cpp
index b3ad1fce17..df3fde9dc5 100644
--- a/stepmania/src/Actor.cpp
+++ b/stepmania/src/Actor.cpp
@@ -269,6 +269,19 @@ void Actor::LoadFromNode( const CString& sDir, const XNode* pNode )
 	PlayCommand( "Init" );
 }
 
+/* Like RTTI: return true if this actor is an sType (or derived from sType).
+ * This uses the Lua binding check, so only works on bound types. */
+bool Actor::IsType( const CString &sType )
+{
+	Lua *L = LUA->Get();
+	this->PushSelf( L );
+	bool bRet = CheckLuaObjectType( L, -1, sType, false );
+	lua_pop( L, 1 );
+	LUA->Release( L );
+
+	return bRet;
+}
+
 void Actor::Draw()
 {
 	if( !m_bVisible )
diff --git a/stepmania/src/Actor.h b/stepmania/src/Actor.h
index cd53fa54f4..d9ab664ecb 100644
--- a/stepmania/src/Actor.h
+++ b/stepmania/src/Actor.h
@@ -32,6 +32,7 @@ public:
 	void UnsubcribeAndClearCommands();
 	virtual void Reset();
 	virtual void LoadFromNode( const CString& sDir, const XNode* pNode );
+	bool IsType( const CString &sType );
 
 	static void SetBGMTime( float fTime, float fBeat );
 	static void SetBGMLight( int iLightNumber, float fCabinetLights );