Hi there, I'm building a multiplayer game in C++/WASM link. While testing with friends, I noticed the game took ~3s to load — 5s on slower connections. Instead of accepting it, I built my own virtual package system in C++ and cut the load time from 3s to ~600ms.

Here's the source: nodepp-filepack

Compression (packing assets):

“`cpp

define NODEPP_ALLOW_THROW_EXCEPTION 0

include <nodepp/nodepp.h>

include <nodepp/zlib.h>

include <nodepp/fs.h>

include <filepack/filepack.h>

using namespace nodepp;

void onMain() {

filepack_t pack("skeld.npk"); auto x = ptr_t<ulong>(0UL, 0UL); fs::read_folder("./assets") .fail([](except_t err) { console::log(">>", err); }) .then([=](ptr_t<string_t> list) { pack.iterate_writable_stream( list, [=](string_t name, file_t stream_o ) { pack.get_readable_info(name).value()["compressed"] = true; zlib::gzip::pipe(file_t(list[x[0]], "r"), stream_o); x[0]++; }); }); 

} “`

Decompression (loading assets):

“`cpp

define NODEPP_ALLOW_THROW_EXCEPTION 0

include <nodepp/nodepp.h>

include <nodepp/zlib.h>

include <nodepp/fs.h>

include <filepack/filepack.h>

using namespace nodepp;

void onMain() { filepack_t pack("skeld.npk"); auto stream = pack.get_readable_stream("map.png").value();

zlib::gunzip::pipe(stream, file_t("map.png", "w")); 

} “`

How it works:

• All assets are packed into a single .npk file with optional compression.
• Assets are streamed and decompressed on the fly — nothing is loaded into memory all at once.
• The result: faster loading, lower memory usage, and a better experience for players on slow connections.

Nodepp is open source: github.com/NodeppOfficial/nodepp