Fix X-Ray for multi-hex movement previews

[emptyteabot]

Summary

• add a shared helper that computes the full hex footprint for hovered move/target previews
• pass that full footprint into X-Ray so medium and large units ghost blockers for every occupied preview hex, not only the cursor hex
• keep the last footprint available for X-Ray reapply paths and clear it at turn-boundary cleanup

Testing

• npx eslint src/utility/query_footprint.ts src/utility/hexgrid.ts src/tests/utility/query_footprint.ts src/tests/utility/hexgrid-xray.ts
• npx jest src/tests/utility/query_footprint.ts src/tests/utility/hexgrid-xray.ts --runInBand
• npx tsc --noEmit
• npm run build
• npx jest --runInBand

/claim #1301

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Project	Deployment	Actions	Updated (UTC)
ancientbeast	Ready	Preview	May 14, 2026 11:03am

[Copilot]

Pull request overview

This PR improves X-Ray behavior during hovered movement/target previews for medium/large creatures by computing the full multi-hex preview footprint and applying X-Ray across every hex in that footprint (instead of only the cursor hex), while also preserving the last computed footprint for X-Ray reapply flows.

Changes:

• Added getQueryFootprintHexes() helper to compute the full multi-hex footprint for hovered previews (including flipped-player offset and walkability adjustment).
• Updated HexGrid.queryHexes() hover path to pass the computed footprint into HexGrid.xray() so X-Ray ghosts blockers for all occupied preview hexes.
• Extended HexGrid.xray() to accept an optional footprint, cache/reuse it for reapply paths, and clear it during clearAllXray(), with added Jest coverage for the new behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/utility/query_footprint.ts	Adds a shared helper to compute the occupied hex footprint for hovered multi-hex previews.
src/utility/hexgrid.ts	Threads preview footprint into X-Ray, caches it for reapply, and clears it at turn-boundary cleanup.
src/__tests__/utility/query_footprint.ts	Adds unit tests validating footprint computation for flipped/non-flipped multi-hex previews.
src/__tests__/utility/hexgrid-xray.ts	Adds a unit test ensuring X-Ray applies ghostOverlap() for every hex in the preview footprint.

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