rexboard-grids-and-coordinates

name: rexboard-grids-and-coordinates description: "Use this skill when working with RexBoard grid coordinates, quadGrid, hexagonGrid, tileXY, worldXY, tile-to-world conversion, world-to-tile conversion, orthogonal, isometric, staggeraxis, staggerindex, direction indexes, neighbor tiles, or board grid shape queries. Triggers on: RexBoard grid, rexBoard quadGrid, rexBoard hexagonGrid, tileXY, worldXY, getWorldXY, getTileXY, RexBoard direction, RexBoard neighbors."

RexBoard Grids And Coordinates

Use this skill for RexBoard coordinate systems and board geometry. It covers quad/hex grid creation, tile/world conversion, neighbor directions, and shape-to-tile queries.

Use This First

Pick the grid factory before writing board logic:

Then pass the grid into this.rexBoard.add.board({ grid, width, height }) or new Board(scene, { grid, width, height }).

Required Setup

This skill assumes RexBoard is available as this.rexBoard or through direct imports from board-components.js. If not, use rexboard-setup-and-factory.

References

Read these only when needed:

• references/grid-config.md: quad/hex config fields and embedded board grid configs.
• references/coordinate-conversion.md: getWorldXY, getTileXY, board conversion, bounds, and shape queries.
• references/directions-and-neighbors.md: direction indexes, neighbor APIs, range queries, and quad/hex direction notes.
• references/grid-recipes.md: reduced recipes for orthogonal, isometric, hex, and pointer-to-tile patterns.

Core Rules

• A Board delegates coordinate conversion to its grid.
• Prefer board conversion methods after a board exists: tileXYToWorldXY, worldXYToTileXY, and worldXYSnapToGrid.
• Use raw grid methods only for grid-only work: grid.getWorldXY, grid.getTileXY, grid.getGridPoints, and grid.getBounds.
• Quad dir: '4dir' versus dir: '8dir' changes neighbor directions.
• Hex staggeraxis and staggerindex affect both visual layout and adjacency.
• Direction indexes depend on grid mode. Avoid hard-coding semantic names unless the grid mode is fixed.

Source File Map

• plugins/board/grid/quad/Quad.d.ts: quad grid config and conversion methods.
• plugins/board/grid/hexagon/Hexagon.d.ts: hex grid config and conversion methods.
• plugins/board/board/LogicBoard.d.ts: board-level conversion, bounds, neighbors, ranges, and shape queries.
• plugins/board/grid/quad/Factory.js: quadGrid factory signature.
• plugins/board/grid/hexagon/Factory.js: hexagonGrid factory signature.

Related Skills

• rexboard-setup-and-factory: plugin setup and factory discovery.
• rexboard-components-catalog: choose a board component family.
• rexboard-board-and-chess: board construction, tileZ, occupancy, and input events.
• rexboard-map-generation-and-import: generated hex map coordinate sets.

Gotchas

• wrap and infinity are board settings, not grid settings, but they change neighbor and bounds behavior.
• tileX/tileY identify grid coordinates; chess placement also needs tileZ.
• Shape-to-tile queries return tile coordinate arrays, not chess objects.