# Keep placing an agent fast on the Riot-line walls · dara/icarus

[View on GitCafe](https://git.cafe/dara/icarus/commit/62afe4702d432b96ba38d60024ce94045eea1ec6)

Repository: [dara/icarus](https://git.cafe/dara/icarus)

Visibility: public

Requested revision: 62afe4702d432b96ba38d60024ce94045eea1ec6

Requested commit: 62afe4702d432b96ba38d60024ce94045eea1ec6

Commit: 62afe4702d432b96ba38d60024ce94045eea1ec6

Tree: 86a496fa332c466e7b1c1a885319252cfb37f098

Author: Dara Adedeji

Committer: Dara Adedeji

## Message

```
Keep placing an agent fast on the Riot-line walls

Each frame of a drag steps the agent out of any wall it stands in. With
thousands of thin strips as walls, and a floor with every wall cut out of
it, that step took up to 1.6 s on Lotus in a profile build (old models:
1.7 ms), and the drag showed 13 build frames over budget.

The walls are now the merged outlines (the builder makes them the model's
walls; no runtimeWalls), and footprint containment files each edge under
the 1-unit rows its height reaches, reading only the point's row. The
answer is unchanged: the new test checks it against reading every edge.
Placement now takes at most 2.0-5.6 ms on the heaviest maps; the all-maps
drag has build p99 at most 3.35 ms and no build frame over budget, over
two runs. Visible-floor leaks 2,323,163 -> 2,313,132 (merging seals
hairline cracks), false shadow unchanged.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

```

## Parents

- [b906d3886c3275175b1f779295172e2f2cb9de5d](https://git.cafe/dara/icarus/commit/b906d3886c3275175b1f779295172e2f2cb9de5d?format=markdown)

[Source at this commit](https://git.cafe/dara/icarus/tree/62afe4702d432b96ba38d60024ce94045eea1ec6?format=markdown)