# Tinyworld Island Viewer > Use when changing the first-class Island Viewer shell, sequential generated-island viewer routing, or viewer-scoped graphics defaults. - Skill: `jasonkneen/tinyworld-island-viewer` (Agent Skill) - Install (CLI): `npx skillmds@latest add jasonkneen/tinyworld-island-viewer` - Raw SKILL.md: https://api.skillmd.com/api/skills/jasonkneen/tinyworld-island-viewer/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: jasonkneen (https://skillmd.com/u/jasonkneen) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/jasonkneen/tinyworld-island-viewer --- # TinyWorld Island Viewer Island Viewer is the first-class generated-island viewing surface: - Shell: `island-viewer.html` - Styles: `styles/island-viewer.css` - Generator: `scripts/island-viewer-sequential-generator.js` - Renderer adapter: `scripts/island-viewer-engine-runtime.js` - Controller: `scripts/island-viewer.js` - Compatibility redirect: `random-island-preview.html` Rules: - Keep the active generator viewer-only and sequential. `island-viewer.html` should load `scripts/island-viewer-sequential-generator.js`, not the giant `scripts/tinyworld-island-core.js` copied random-island bundle. - Keep the builder-engine renderer stack active for now. Do not load `scripts/island-viewer-renderer.js` on `island-viewer.html` while `scripts/island-viewer-engine-runtime.js` provides the current look. - The sequential layer stack is: all grass, first house, corner towers, paths, extra houses, fenced crops, fenced animals, rock patch, water route, bridge detection, strategic lanterns, plain stone outcrops, trees/bushes, then final weighted infill. - The viewer sequential generator must emit schema-valid `v:4` world cells, use normal `terrain: "path"` cells for public path output, and expose `TinyWorldIslandGenerator.generate(...)` and `.profile(...)`. - Do not emit `water-bridge` or `bridgeAxis` metadata from the active viewer generator. Bridges are allowed only through the new local detector: after water carving, scan local crossings with path cells on one axis and water cells on the perpendicular axis, then turn only the center water cell into a normal `kind: "bridge"`. - Strategic lanterns are native `kind: "lamp-post"` cells placed after bridge detection. Keep them on empty grass cells that touch exactly two perpendicular path cells, and keep every pair more than 3 Manhattan spaces apart. - A manor is a rare native `house` with `buildingType: "manor"`, not a promoted cottage. Only roll the 25% manor chance after at least three normal houses exist, reserve its footprint during generation, and connect a path from the cell in front of its door back into the existing path network before plots, rocks, water, or lanterns run. - Trees and bushes are native `kind: "tree"` / `kind: "bush"` decoration placed after the functional path/water/bridge/lamp layers. Only use empty grass cells, keep trees spaced out, and let bushes fill smaller remaining border/garden opportunities without occupying paths. - The initial fenced crop plot should keep its four dirt plot cells and fence gates, but each cell rolls independently: 25% empty, otherwise evenly between wheat, corn, carrot, pumpkin, and sunflower. - The quarry/rock patch is the canonical ore showcase: its four cells should emit `kind: "rock"` with `appearance.oreMetal` covering `copper`, `iron`, `silver`, and `gold` once each. Extra infill ore may still pick a deterministic metal, but the core patch should visibly expose all four variants. Prefer a 2x2 quarry; if earlier sequential layers leave no legal 2x2 space, place a compact connected four-cell quarry without overwriting paths, water, fences, structures, or reserved manor footprint cells. - After the sparse tree/bush pass, run a final weighted infill loop over normal empty buildable cells until none remain. The infill choices should stay within native economy objects: crops, plain stone, ore, sheep/cow, bushes, and trees. Plain stone should be generated by the dedicated outcrop layer and can be extended by this weighted pass, clustered around stone/quarry terrain; do not add a post-pass forced stone correction. Do not fill water, paths, fences, structures, or reserved manor footprint cells. - Water route planning must treat path crossings as single-cell crossings per connected path area. Do not let water carve two adjacent path cells or run along the path before turning back into normal terrain. - Keep normal viewer chrome minimal. It is not a build screen: visible controls should stay viewer actions such as New Island, Load, and Save. - Put grid/seed and graphics controls in the local/developer defaults helper, not in the primary viewer toolbar. Do not expose archetype as a viewer-facing economy or card concept; it is only hidden generator input when a caller passes it explicitly. - Generated Island Viewer islands are fixed at `8 x 8`. - Viewer runtime load applies the normalized 64-cell island once. Do not restore the old `clearViewerWorld()` + full reapply double pass, and do not force every tile rebuild during initial load. Use the `window.__tinyworldIslandViewerLoading` guard to suppress interleaved renders, then render once after the island settles. - Viewer directional sun defaults to `10.0` (1000%). Migrate the old viewer default `1.1` only when it still looks untouched; user-edited values should stay user-owned. - Persist viewer defaults only under `tinyworld:island-viewer:*`. Do not write viewer graphics into normal builder `tinyworld:render:*` keys. - Use `npm run stats:island-viewer -- --count 1000` for on-demand sequential generator sweeps. The CLI loads the shared Raw Yield economy helper plus the viewer generator directly, validates schema/invariants, reports Raw Yield score/rarity/leader/resource summaries, and writes reports under `stats-runs/island-viewer-sequential/`. Validation: - `npm test` - `npm run build` - `npm run stats:island-viewer -- --count 1000` - Check `/island-viewer` or `/island-viewer.html`: page loads through the builder-engine renderer, generated saves contain no legacy bridge metadata, and the shell does not request `scripts/tinyworld-island-core.js` or `scripts/island-viewer-renderer.js`.