Public Access
79 lines
3.7 KiB
Markdown
79 lines
3.7 KiB
Markdown
# Destination preview compatibility
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Rivencraft has three destination preview backends. The selected backend is a
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client presentation detail; the server validates travel and Age generation is
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independent of every preview integration.
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## Selection matrix
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Set `book_preview.mode` in `rivencraft-client.toml`.
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| Configured mode | Immersive Portals installed | Create/Ponder installed | Selected backend |
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| --- | --- | --- | --- |
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| `AUTO` | yes | either | Immersive Portals |
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| `AUTO` | no | yes | Ponder snapshot |
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| `AUTO` | no | no | built-in legacy animation |
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| `IMMERSIVE_PORTALS` | yes | either | Immersive Portals |
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| `IMMERSIVE_PORTALS` | no | either | built-in legacy animation |
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| `PONDER` | either | yes | Ponder snapshot |
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| `PONDER` | either | no | built-in legacy animation |
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| `LEGACY` | either | either | built-in legacy animation |
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Explicit optional modes fall back directly to `LEGACY`. They do not silently
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select the other optional integration. GameTests exercise every row and every
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dependency-presence permutation.
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## Book behavior
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Held Linking and Descriptive Books render the selected backend in the preview
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panel. Immersive Portals additionally exposes **Explore**: the player remains
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at the opening position, mouse look controls the remote camera, and
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right-click returns to the standard book view.
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Books on a Book Stand use the same preview panel, but Explore is disabled so
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the player cannot move away and leave a remote preview session owned by the
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stand screen. Closing either screen releases its server chunk loader. Linking,
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disconnecting, unloading the destination Age, and stopping the server also
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release affected loaders.
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The Immersive Portals backend force-loads the initial 3 by 3 destination area
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before registering its wider preview chunk loader. The Ponder backend clears
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the previous snapshot before applying replacement block data. The live backend
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clears its framebuffer on each render and restores the Minecraft viewport
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afterward. These rules prevent stale snapshot frames and book UI elements from
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being captured in the preview.
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## Supported combinations and upstream limits
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The compatibility baseline is Minecraft 1.21.1, NeoForge 21.1.251, Create
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6.0.10, and Immersive Portals 6.0.7. Core Age generation and the `LEGACY`
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backend run without Create or Immersive Portals; the headless GameTest server
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uses that dependency-free path.
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Immersive Portals 6.0.7 is incompatible with Sodium 0.8.13 for Minecraft
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1.21.1: its Sodium compatibility mixin references the removed
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`OcclusionCuller.Visitor` class and crashes while entering a world. Sodium
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0.6.13 avoids that specific mixin failure. This compatibility boundary belongs
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to Immersive Portals and Sodium, before Rivencraft's preview code runs.
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Immersive Portals reports that some Create contraptions can be invisible when
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the two mods are installed together. Rivencraft does not replace either mod's
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world or contraption renderer, so this remains an upstream rendering limit.
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The `PONDER` or `LEGACY` mode is the supported fallback when live rendering is
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unstable in a particular graphics or mod configuration.
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## Release verification
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For preview-related releases:
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1. Run `./gradlew runGameTestServer` to verify the complete selection matrix,
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core Age creation, persistence, and travel without optional renderers.
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2. Open held Linking and Descriptive Books once with each available backend.
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3. Open both book types from a Book Stand and confirm Explore is disabled.
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4. With Immersive Portals, enter and leave Explore, travel between dimensions,
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close the screen, and disconnect; confirm destination chunks render and no
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preview loader remains active.
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5. With Ponder, reopen different destinations and confirm the previous
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snapshot does not bleed into the next one.
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