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Wormhole
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Wormhole
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# Wormhole > physically-real seamless portals for minecraft, built with elide  A Fabric mod that adds spherical wormhole "mouths" to the world. Link two of them and you get a portal you can see through and walk through, into the same dimension or across the overworld/nether boundary. The view through a mouth is not a texture trick: it captures the far side as a live cubemap and bends the light along real wormhole geodesics, so the window warps space the way the *Interstellar* visual-effects team modeled it. Crossing is seamless. Same-dimension trips are client-predicted for smoothness and reconciled by the server. Cross-dimension trips stream the destination's chunks ahead of time into a synthetic level and promote it on arrival, with no loading screen. ## Structure - [`elide.pkl`](./elide.pkl) - Project manifest; replaces `build.gradle` - [`src/main/java`](./src/main/java) - All mod logic (`com.wormhole.*`) - [`src/main/resources`](./src/main/resources) - `fabric.mod.json`, mixin config, and GLSL lens shaders ### Java Packages - [`portal`](./src/main/java/com/wormhole/portal) - Portal geometry and the persistent registry: `PortalPair`, `PortalEnd`, `PortalManager`, tunnelling-safe `MouthCrossing` - [`client`](./src/main/java/com/wormhole/client) - Client-predicted crossing detection (`ClientPortalTeleport`) and the local pair mirror (`ClientPortalStore`) - [`server`](./src/main/java/com/wormhole/server) - Authoritative crossing reconciliation (`PortalCrossingHandler`) and cross-dimension chunk streaming (`CrossDimChunkStreamer`) - [`client/render/lens`](./src/main/java/com/wormhole/client/render/lens) - The DNeg wormhole optics: geodesic model, baked deflection LUTs, and the through-view and around-the-mouth renderers - [`client/render/capture`](./src/main/java/com/wormhole/client/render/capture) - Live cubemap and framebuffer capture of the far side - [`client/render/remote`](./src/main/java/com/wormhole/client/render/remote) - Synthetic remote dimensions for the cross-dim through-view - [`net`](./src/main/java/com/wormhole/net) - Client/server payloads for pair sync and chunk streaming - [`mixin`](./src/main/java/com/wormhole/mixin) - Render-target, respawn, and stencil hooks ### Shaders - [`wormhole_sphere`](./src/main/resources/assets/wormhole/shaders/core) - Through-view: samples the partner cubemap along the bent geodesic, with an Einstein-ring silhouette glow - [`wormhole_around`](./src/main/resources/assets/wormhole/shaders/core) - Warps the surrounding scene radially around the mouth ## How it works The lensing follows the DNeg wormhole-rendering math (James, von Tunzelmann, Franklin & Thorne, [arXiv:1502.03809](https://arxiv.org/abs/1502.03809)). Light geodesics are RK4-integrated through the throat and baked into deflection LUTs, which the shaders sample per-fragment. The far side of each mouth is captured every frame as a 6-face cubemap, so the through-view is valid in any direction with no field-of-view limit. For cross-dimension portals, the server streams chunk geometry and lighting around the destination mouth into a synthetic `ClientLevel` with its own renderer. When you cross, that pre-streamed level is promoted to live and cached for the return trip, so the swap is invisible. ## Build The project is built with [Elide](https://elide.dev), a single-binary build system and runtime. It replaces the entire Gradle stack here: there is no `build.gradle`, no `gradle/` directory, and no daemon. The whole manifest is a few lines of [`elide.pkl`](./elide.pkl), and the JDK is bundled in the Elide binary, so there is no separate install or `JAVA_HOME` to manage. ## Credits Seamless-traversal and cross-dimension streaming approach ported from [ImmersivePortals](https://github.com/qouteall/ImmersivePortals) and SeamlessPortals. Wormhole optics based on the DNeg / *Interstellar* rendering paper.
