Public Access
94 lines
4.6 KiB
Markdown
94 lines
4.6 KiB
Markdown
# Writing and symbol data
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Milestone 4 stores what a player wrote without deciding what that writing does
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to an Age. Milestone 5 owns grammar validation, symbol interaction, instability,
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and translation into biome, noise, dimension-type, and other world-generation
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configuration.
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## Symbol catalog
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The authoritative server catalog loads JSON resources from
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`data/<namespace>/rivencraft/symbols/<path>.json`. The resource ID is the
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symbol ID. For example, `data/rivencraft/rivencraft/symbols/terrain/standard.json`
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defines `rivencraft:terrain/standard`.
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Schema version 1 contains display metadata only:
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```json
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{
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"schema_version": 1,
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"name": "symbol.rivencraft.terrain.standard",
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"description": "symbol.rivencraft.terrain.standard.description",
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"category": "rivencraft:terrain"
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}
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```
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`name` and `description` are translation keys, not arbitrary formatted text or
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executable behavior. `category` is a namespaced organizational identifier.
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Invalid definitions are logged and excluded by the server. Menus and future
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page synchronization must obtain resolved display metadata from the server;
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clients never make a symbol valid by naming it.
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Rivencraft ships a small catalog covering terrain, biomes, lighting, weather,
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celestial behavior, and features. It exists to exercise the complete writing
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workflow before Milestone 5 implements the full legacy grammar.
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## Persistent writing
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`SymbolReference` stores only a namespaced symbol ID. `WritingEntry` is either
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a symbol reference or a baseline link-panel marker. `OrderedWriting` retains up
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to 256 entries in exact player-authored order. All three contracts have both
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persistent codecs and bounded network codecs.
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Removing a data pack never removes its IDs from saved writing. A missing ID is
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resolved as client-safe **Unresolved Symbol** display metadata while retaining
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the original namespaced ID for diagnostics and later restoration. This is
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deliberately different from treating an unknown symbol as valid grammar.
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## Pages
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The single stackable `rivencraft:page` item has a bounded, persistent
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`rivencraft:page_content` component. Its explicit states are blank, symbol,
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unresolved symbol, and baseline link panel. Symbol and unresolved-symbol pages
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retain their namespaced symbol reference; unresolved pages can be inspected and
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removed but are rejected as usable writing until their data pack returns.
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Only server-side writing operations may turn a blank page into a known symbol
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page or link panel. The shared `PageItem` creation and validation gates reject
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new pages for identifiers absent from the server catalog. Later Writing Desk
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and Book Binder packets must call these gates rather than accepting page
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contents supplied by a client.
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The item model uses server-assigned custom-model data derived from the symbol
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identifier. Built-in pages reproduce Mystcraft Legacy's four-word poem
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composition from its page background and symbol-component sheet. Data-pack
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symbols without a bundled resource-pack model use the legacy question-mark
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fallback while keeping their real identifier and display metadata.
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The Notebook surface displays pages by their persistent slot index instead of
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packing occupied pages together. Empty positions through the last placed page
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appear darkened. While carrying a Page, all available positions are shown for
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placement. The surface draws the native 30×40 portrait page region from
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Legacy's book UI atlas; symbols are layered at a uniform scale, while the
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square item models remain unchanged in inventories.
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## Ink and baseline link panels
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An Ink Vial is crafted from two black dye, a glass bottle, and a water bucket.
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The bucket remains after crafting. Each vial holds 16 ink units, stored in a
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persistent, network-synchronized component; only vials with identical remaining
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ink stack together. When depleted, a vial returns a glass bottle that can be
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used to craft another. The animated item texture comes from Mystcraft Legacy.
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The server config sets ink costs independently for symbol copying (default one
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unit) and baseline link-panel preparation (default two units). To prepare a
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panel, hold a blank Page in one hand and use an Ink Vial in the other. The
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server checks the held items, blank state, and sufficient ink before consuming
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anything. A stack of blank Pages yields exactly one Link Panel Page per use;
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if the inventory is full, the result is dropped instead of deleted. Symbol
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copying is implemented by the Writing Desk: it previews a copy of the selected
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resolved page, then spends paper and ink only when that copy is taken. The
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desk's 16-unit ink meter refills from an Ink Vial when needed and returns a
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vanilla glass bottle. Link-property modifiers are
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deferred beyond this baseline flow.
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