Tiled JSON (.tmj)

The Tiled JSON exporter writes the Tiled 1.10 JSON map format. This is the round-trip baseline: anything Tiled itself can store, GridCraft writes here. Use it when you want a file Tiled can open, or when no other engine target fits your needs.

What's covered

• All layer types: tile, object, image, group.
• All object shapes: rectangle, ellipse, point, polygon, polyline, text, tile object.
• Tilesets, embedded and external (external referenced by path).
• Tile properties, animations, collision shapes, type / class.
• Wang sets (corner and edge).
• Finite and infinite maps (chunked).
• Custom properties of every supported type.

Variable-size tiles

Tiled assumes uniform tile size, so the exporter applies a polyfill before writing. Oversize tiles get broken into uniform sub-tiles that reference the same atlas region. Tiled opens the file and shows the tile at the right visual size. If you re-import into GridCraft, the loader rebuilds the oversize footprint.

Output

map.tmj   (UTF-8 JSON, Tiled 1.10 format)

File extension .tmj. Pretty-printed with 2-space indentation.