Build your own house: walls, windows, doors, floors, roof, stairs, furniture

House parts (stdlib isokit/house): house_wall drawn along a line, with ends
that adapt at corners, T-junctions and straight runs so no two walls
overlap; window and door that sit on a wall and cut its opening (door
styles panel, glass, double, sliding, opening; swing and hinge by
rotation); floor (boards, tiles, carpet, stone); roof (hip, gable, flat,
optional solar); stairs.

Furniture (stdlib isokit/furniture): chair, sofa / armchair, table with
chairs, desk with monitor and chair, TV, bed, cupboard, bookshelf, kitchen
run, bathtub, shower, toilet, washbasin, plant, rug, floor lamp.

Cut-open levels: on gf / 1f the walls in front of a room are cut low
(rooms are found by their floors), the roof becomes an outline on the
floor, and storeys above are left out. A part's storey comes from z
(storey_h, default 3 m).

Scripting: objects_of, objects_at, objects_on, mount_of, mounted, frame,
to_world, to_local, local_of. Prefab meta: shape (line / rect), mount,
storey.

Studio: drag to draw lines and rectangles (walls, roads, fences, hedges,
floors, areas, buildings, roofs). The Room tool draws a floor plus walls,
without doubling walls that already stand on an edge. Windows and doors
snap onto walls with a hover preview, and they move, turn, copy and
delete with their wall in one undo step. New parts land on the storey
the view shows. Palette categories collapse, and the palette scrolls
apart from the object list.

The MCP instructions explain house building, and list_prefabs shows
sits_on. examples/house is a furnished bungalow; the web Studio gets a
House demo button. Tests: wall corners and junctions, zero depth-sort
cycles in every view, cut levels, and the house demo in every view;
check_studio covers the room / window / door / storey flow, check_web
the House demo.

examples/house/isokit.toml

@@ -0,0 +1,34 @@
+# isokit house demo: a house built from parts (walls, windows, doors, floors,
+# furniture, roof). Open it with `isokit studio examples/house`.
+title = "isokit house"
+note = "A house built from parts. GF cuts it open: walls in front of a room are cut low, the roof is lifted off. Drag to pan, Ctrl + wheel or pinch to zoom, tap anything for details."
+default_level = "gf"
+default_rotation = 1
+prelude = []
+theme = ["theme.toml"]
+
+[[level]]
+id = "site"
+label = "Site"
+title = "The house closed, with its roof"
+
+[[level]]
+id = "gf"
+label = "GF"
+title = "Ground floor, cut open"
+
+[[param]]
+name = "labels"
+type = "bool"
+default = true
+label = "Labels"
+
+[[param]]
+name = "running"
+type = "bool"
+default = true
+label = "Animation"
+
+[build]
+out = "dist/index.html"
+budget = 6000