Predictable sessions
Session IDs and render revisions keep every open, update, and close tied to the correct viewer state.
All productsDefine a locked, typed menu and open it for a player.
Interfaces without inventory plumbing
QuantumGUI
A fast, cross-version inventory interface framework.
Menu shop = QuantumGUI.menu() .key("credits-shop") .title("<gradient:#8B5CF6:#22D3EE>Credits Shop</gradient>") .rows(6) .policy(MenuPolicy.locked()) .item(22, GuiItem.builder() .material(MaterialKey.of("EMERALD")) .name("<green>Your Credits") .onClick(context -> context.open("credit-packages")) .build()) .build();shop.open(player);Why QuantumGUI
Small surface. Strong guarantees.
Composable menus
Build shops, selections, confirmations, and paginated interfaces on the same template engine.
Platform adapters
Keep menu intent separate from Bukkit, Paper, Folia, legacy, and modern runtime details.
What you get
The useful parts are first-class.
- Immutable menu templates
- Incremental rendering
- Pagination and safe click handling
Suggested modulesGradle
dev.crown.quantum:quantum-gui-apiapi
dev.crown.quantum:quantum-gui-coremodule
dev.crown.quantum:quantum-gui-papermodule
dev.crown.quantum:quantum-gui-foliamodule
Version and repository coordinates are intentionally owner-configured before release.
Build your next plugin foundation
Build better. Build Quantum.
Start with one focused library, then compose the ecosystem as your plugin grows.