FA-86358 / Procedural level generation constraints / Member archive

Room placement with padding: Horizontal neighbours ignore padding · case 03

Side-by-side rooms share a wall with no corridor gap.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Candidates [x, y, w, h] are tried in order. A room needs w >= 3 and h >= 3, must stay inside a one-tile border (x >= 1, y >= 1, x+w <= width-1, y+h <= height-1) and must keep at least pad empty tiles to every accepted room on both axes (rooms conflict when their pad-expanded extents overlap). Returns indices of accepted candidates.

Why this case matters

Procedural generators silently emit unplayable or unfair levels when a single constraint check uses the wrong boundary, axis, neighborhood or update order; the defect is visible in exact generated geometry.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
fault site horizontal padding #1	`[0, 5]`	`[0]`	Failed

MEMBER ARCHIVE

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