var sideMovieClip:WallMaterial = new WallMaterial();// Это наш наследник спрайта

var sideMaterial:MovieMaterial = new MovieMaterial(sideMovieClip, true, true);

sideMaterial.interactive = true;

sideMaterial.doubleSided = true;

var currentMaterialsList:MaterialsList = new MaterialsList();

currentMaterialsList.addMaterial (new ColorMaterial(0x838383), "ИмяМатериалаИзКоллады1");

currentMaterialsList.addMaterial (sideMaterial, "ИмяМатериалаИзКоллады2");

var collada:Collada = new Collada(XML(new colladaClass), currentMaterialsList, 4, true);