ludic/changes
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feat(engine): Tiled P1 — rt_tmap model + GID resolver + render + projection (#69)
The heart of Tiled support: load a map and draw it.

- rt_tmap model (Tmap/TmLayer/TmTileset in tiled.ludic): map header + ordered
  layers (dense int32 GID arrays, heap-allocated to w*h, lifting the 96x64 cap)
  + tilesets. Built from the intermediate Value tree, so the TMX and TMJ paths
  both feed it.
- GID resolver (Tiled.resolve): gid -> (tileset, localId, flipH/V/D); the three
  flip flags masked off before the local-id lookup, returned alongside. gid==0
  is empty.
- Image-backed render (Tiled.draw): every visible tile layer in file order,
  blitting each tile from its tileset image with flips applied at draw.
- Compatibility projection (Tiled.project / auto on load): a designated
  collision layer projects to the legacy byte tilemap ('#' solid, '=' one-way
  via the oneway property, ' ' empty) so Grid.*/Path.*/esys_move are unchanged.
- Tiled.load resolves external tilesets + images relative to the map file and
  auto-projects a collision/solids/walls layer.
- The grid and physics_tiles demos now run off a loaded map (grid_maze.tmx /
  physics_map.tmx) instead of hand-authored Map.row strings, byte-identically.

Two compiler fixes fell out of this (see the changeset):
- emit_index_addr set g_addr_ty before evaluating the index, so slice[obj.field]
  came back mis-typed; set it last, like the raw-pointer branches.
- @strcmp was declared by both the world table and the fs prelude; centralise
  it in the head prelude so a game that uses Fs/Path links.

Proven by library/tiled_p1.ludic (14 assertions: loads+renders Kenney map
identically from .tmx and .tmj, flip mirroring) + the converted grid/
physics_tiles demos. x test: 92 passed; self-host bootstrap fixpoint intact.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-09-01 14:43:29 +03:00
..
index-addr-member-index.md feat(engine): Tiled P1 — rt_tmap model + GID resolver + render + projection (#69) 2026-09-01 14:43:29 +03:00
package-declarable-hooks.md docs(pkg): document @Namespace / @EngineSystem / @System + package hooks (#62) 2026-09-01 12:31:47 +03:00
package-manager.md feat(pkg): package manager — fetch + MVS resolve + namespace registration (#63) 2026-09-01 07:08:12 +03:00
prebuilt-packages.md feat(pkg): x build-lib / prebuilt consumption — binary packages end-to-end (#64) 2026-09-01 07:52:06 +03:00
README.md feat(release): SemVer + ludicc --version, changesets, and x release 2026-08-30 23:46:59 +03:00
tiled-maps.md feat(engine): Tiled P1 — rt_tmap model + GID resolver + render + projection (#69) 2026-09-01 14:43:29 +03:00

Changesets

A changeset is one small Markdown file describing a single user-facing change, dropped in this directory. x release consumes every changeset here into a new CHANGELOG.md section, bumps VERSION, and deletes the consumed files.

Format

bump: minor
type: feat
One or more lines describing the change, in the past-agnostic imperative used in
the changelog. Markdown is fine.
  • bump: — major, minor, or patch (SemVer). The release version is bumped by the highest level among the pending changesets (unless x release <level> overrides it).
  • type: — the Conventional Commit type (feat, fix, perf, docs, …); it becomes the bold prefix of the changelog bullet.

Adding one

Create a file with a short, unique name, e.g. changes/regex-namespace.md. Any filename works except this README.md, which the release step always skips.