Compute hex grid coordinates, distances, paths, and line-of-sight.
npx skills add https://github.com/chaoming/ww2-flutter-game --skill hex-math
Please help me install this Agent Skill. Skill: hex-math Source: https://github.com/chaoming/ww2-flutter-game/tree/main/.claude/skills/hex-math Command: npx skills add https://github.com/chaoming/ww2-flutter-game --skill hex-math
This Skill provides a concise reference for hexagonal grid mathematics, empowering developers and game designers to implement movement, range calculations, and line-of-sight on hex grids without hunting through external docs.
Use this skill to implement core hex-grid math: distance, neighbors, and line-of-sight calculations for your hex grid.
High-intent search queries and answers about installing and using this skill.
Hex grid distance is calculated using cube coordinates, where the distance equals the maximum of the absolute differences across all three axes divided by two. This works for any hex orientation and is more efficient than pixel-based distance for pathfinding and range queries.
Cube coordinates and offset coordinates are the two main systems. Cube coordinates simplify distance and neighbor calculations; offset coordinates (odd-q variant) map efficiently to 2D arrays. Choose based on whether you prioritize math elegance or storage efficiency.
Range queries iterate through cube coordinates within a distance threshold, filtering by the max-of-absolute-differences rule. This produces all hexagons reachable in N moves, essential for movement UI, ability targeting, and fog-of-war in strategy games.
Line-of-sight uses line-drawing algorithms on cube coordinates to trace a path between two hexes, checking for obstacles along the way. This determines visibility for AI perception, fog reveal, and attack targeting in hex-based games.
Yes. Cube-to-offset and offset-to-cube conversions are bidirectional transformations, with odd-q offset being the standard variant. Use these to switch between coordinate systems depending on whether your algorithm needs math simplicity or array storage.
Neighbor generation in cube coordinates adds fixed direction vectors to a hex's position, producing six adjacent hexes. This is faster and more elegant than distance-based lookup and forms the foundation for pathfinding and movement validation.
15195999826Implement hexagonal grid algorithms for coordinate conversions, pathfinding, and rendering.
shenxingyAudit corrections/rules.md to classify and promote learned rules into CLAUDE.md.
KaiserWhoLearnsComputes neighbors, distances, and ranges for odd-r hex grids in Python.
GeneralReasoningCompute neighbors, distances, and ranges on odd-r offset hex grids.
