there's no way that a max heap is better than just sorting

src/map.rs

@@ -266,9 +266,10 @@ impl<R:BinReaderExt> StreamableMap<R>{
 		read_texture(&mut self.file,block_id)
 	}
 	pub fn into_complete_map(mut self)->Result<strafesnet_common::map::CompleteMap,Error>{
-		//count on reading the file in sequential order being fastest
-		let mut block_ids=std::collections::BinaryHeap::new();
+		let mut block_ids=Vec::new();
 		self.bvh.into_visitor(&mut |block_id|block_ids.push(block_id));
+		//count on reading the file in sequential order being fastest
+		block_ids.sort_unstable();
 		//load all regions
 		let mut model_pairs=HashMap::new();
 		for block_id in block_ids{