@2d-game-grid/square/dist/esm/algorithms/pathfinding/listReachableCells.js

A simple square grid made for games

import { ALL_DIRECTIONS, UniqueCellQueue } from '@2d-game-grid/core';
/**
 * @param cell The start cell
 * @param maxPathSteps The maximum amount of steps (including) to a cell that should be returned (start and end cell included)
 * @param options The options to customize the pathfinding
 * @returns All cells that are reachable (excluding the start cell)
 */
export function listReachableCells(cell, maxPathSteps, options) {
    const queue = new UniqueCellQueue();
    const neighbors = cell.neighbors.list(ALL_DIRECTIONS);
    queue.ignore(cell);
    queue.addAll(neighbors);
    const reachableCells = [];
    while (queue.hasNext()) {
        const nextCell = queue.getNext();
        const steps = cell.getPath(nextCell, options).length;
        if (steps >= 1 && steps <= maxPathSteps) {
            reachableCells.push(nextCell);
            queue.addAll(nextCell.neighbors.list(ALL_DIRECTIONS));
        }
    }
    return reachableCells;
}