function TestScript1_Interface() {} TestScript1_Interface.prototype.GetX = function() { return IID_TestScriptIfc + Engine.QueryInterface(this.entity, IID_TestScriptIfc).Method(); }; Engine.RegisterComponentType(IID_Test1, "TestScript1_Interface", TestScript1_Interface); function TestScript2_Interface() {} TestScript2_Interface.prototype.Method = function() { return 1000; }; Engine.RegisterComponentType(IID_TestScriptIfc, "TestScript2_Interface", TestScript2_Interface);