Function CE::Assets::Tilesets::Selection::select(const BitmaskRule&, const Sampler&, const Options&)

• Defined in File tile-selection.h

Function Documentation

Result CE::Assets::Tilesets::Selection::select(const BitmaskRule &rule, const Sampler &sampler, const Options &options)

Declaration: [[nodiscard]]

Build a neighboring-cell connectivity mask using bit_order; diagonal gating may sample extra cardinal cells.

See also

Detailed guide

Parameters:

• rule – Stable CPU rule metadata; cells are not checked against an image/grid here.

• sampler – Nonempty synchronous callback, never retained; keep sampled world data stable.

• options – Valid fallback/diagonal choices and deterministic location seed.

Throws:

CE::Exceptions::invalid_args – For invalid options, sampler or relevant rule metadata. Sampler/allocation exceptions propagate. Unknown Wang terrain IDs use the unknown policy. No world storage, native resource, grid validation or animation lookup occurs; apply an owning tileset’s cell_at() separately when needed.

Returns:

Selected original cell, MissingRule for an absent/empty candidate set, or IncompleteNeighborhood for unresolved required sites.