Interactive [Resource] loader. Interactive [Resource] loader. This object is returned by [ResourceLoader] when performing an interactive load. It allows loading resources with high granularity, which makes it mainly useful for displaying loading bars or percentages. Returns the loaded resource if the load operation completed successfully, [code]null[/code] otherwise. Returns the load stage. The total amount of stages can be queried with [method get_stage_count]. Returns the total amount of stages (calls to [method poll]) needed to completely load this resource. Polls the loading operation, i.e. loads a data chunk up to the next stage. Returns [constant OK] if the poll is successful but the load operation has not finished yet (intermediate stage). This means [method poll] will have to be called again until the last stage is completed. Returns [constant ERR_FILE_EOF] if the load operation has completed successfully. The loaded resource can be obtained by calling [method get_resource]. Returns another [enum Error] code if the poll has failed. Polls the loading operation successively until the resource is completely loaded or a [method poll] fails. Returns [constant ERR_FILE_EOF] if the load operation has completed successfully. The loaded resource can be obtained by calling [method get_resource]. Returns another [enum Error] code if a poll has failed, aborting the operation. Configures whether nested resources, if included, should not be cached.