Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add 0xheycat/isometric-game-skills --skill tile-picking-interactiongit clone --depth 1 https://github.com/0xheycat/isometric-game-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/0xheycat/isometric-game-skills/tile-picking-interaction)<a href="https://agentmods.dev/skills/0xheycat/isometric-game-skills/tile-picking-interaction"><img src="https://agentmods.dev/badge/skills/0xheycat/isometric-game-skills/tile-picking-interaction/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/0xheycat/isometric-game-skills/tile-picking-interaction"><img src="https://agentmods.dev/badge/skills/0xheycat/isometric-game-skills/tile-picking-interaction.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.00397 |
| Opus 5 | $0.00014 | $0.00198 |
| Sonnet 5 | $0.00006 | $0.00079 |
| Haiku 4.5 | $0.00003 | $0.00040 |
Grade A, and why
tile-picking-interaction scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Tile Picking & Interaction
Overview
Picking is screen->grid with the camera inverse applied first. This skill turns a pointer position into the exact tile under it, with a highlight and hit-test that respects camera pan/zoom.
When to Use
- Clicking selects the wrong tile.
- You need hover highlight or click-to-place.
- Picking ignores camera pan/zoom.
Process
- Take the pointer position in screen space.
- Apply the inverse camera transform (see
camera-pan-zoom-controls). - Apply screen->grid from
isometric-grid-mathand round to a tile. - Clamp the result to map bounds and check walkable if needed.
- Draw a highlight on the picked tile for feedback.
- On click, dispatch the tile coord to the gameplay handler.
- Test picking at multiple zoom levels and pan offsets.
const world = screenToWorld(pointer, cam);
const tile = worldToGrid(world, W, H); // then round
Rationalizations (Stop Lying to Yourself)
| Excuse | Reality |
|---|---|
| "I will skip the camera inverse" | Then picking breaks the moment you pan/zoom. Always invert. |
| "No need to highlight" | Players need feedback on what they will click. Highlight. |
Red Flags - STOP if you catch yourself:
- Picking that ignores camera pan/zoom.
- No rounding so edge tiles mis-select.
- No visual highlight feedback.
Verification
You are NOT done until every box is checked:
- Picked tile is correct at any pan and zoom.
- Hover highlight matches the actual selected tile.
- Clicks dispatch the right grid coordinate.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 54 lines · 28 tokens per session scan A f6bed1a7d3a7
tile-picking-interaction is a skill published in the GitHub repository 0xheycat/isometric-game-skills (15 stars, last pushed 29d ago), licensed MIT. It adds 28 tokens to every session and 397 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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