Function walkableUnlessTypes

walkableUnlessTypes(blocked: readonly string[]): IsWalkable

Walkability that blocks the given cell types and anything off the matrix. A game whose walls are "barrier" passes that name. A game whose walls are "wall" passes that instead. Types not in the list can be entered.

Parameters

blocked: readonly string[]
Cell type strings that cannot be entered.

Returns IsWalkable

A predicate for chooseHiderAction, chooseSeekerStep, and the search helpers.

Example

import { walkableUnlessTypes } from "@tamb/gamegrid/npc";

const matrix = [
  [
    { type: "floor" },
    { type: "wall" },
  ],
  [
    { type: "water" },
    { type: "floor" },
  ],
];
const isWalkable = walkableUnlessTypes(["wall", "water"]);
isWalkable(matrix, 0, 0); // floor
isWalkable(matrix, 1, 0); // wall, blocked
isWalkable(matrix, 1, 1); // floor
isWalkable(matrix, -1, 0); // false, off the board
isWalkable(matrix, 0, 2); // false, no such row

Example: Walls named barrier

import { walkableUnlessTypes } from "@tamb/gamegrid/npc";

const isWalkable = walkableUnlessTypes(["barrier"]);
const matrix = [[{ type: "open" }, { type: "barrier" }]];
isWalkable(matrix, 0, 0); // true
isWalkable(matrix, 1, 0); // false