public CCTMXTiledLayer getTiledLayer(string name){
for(int i=0; i<layers.Length; i++){
CCTMXLayer layer = layers[i];
if(layer.name == name && layer is CCTMXTiledLayer)
return layer as CCTMXTiledLayer;
}
return null;
}
public CCTMXObjectGroup getObjectGroup(string name){