Binos

Simple a-star pathfinder.

Installation

npm install --save binos

API

const newMap = require('binos')([...nodes])

Function used to create a new map, nodes are an array of objects with the following fields:

Field	Type	Description
x	Number	X Coordinate.
y	Number	Y Coordinate.
weight	Number	Weight of tile, ranging from 0 (best weight) to 1 (worst weight).

NOTE: A node with weight of 1 is unpassable.

const path = newMap(source, destination, options)

Function used to get the best path between source and destination within a Binos Map.

source & destination Field:

Field	Type	Description
x	Number	X Coordinate.
y	Number	Y Coordinate.

options

Field	Type	Description
diagonals	Boolean	Indicates whether moving diagonally is accepted or not, by default it is set to true.
calculateG	Number	Used to calculate the G of a A* Pathfinding Node. By default its the distance between the nodes being considered.

Example

'use strict'

const newMap = require('binos')

const getPath = newMap([
  { x: 0, y: 0, weight: 0.5 },
  { x: 1, y: 0, weight: 0.4 },
  { x: 2, y: 0, weight: 0.3 },
  { x: 3, y: 0, weight: 0.9 },
  { x: 4, y: 0, weight: 0.8 },
  { x: 0, y: 1, weight: 0.2 },
  { x: 1, y: 1, weight: 0.9 },
  { x: 2, y: 1, weight: 0.8 },
  { x: 3, y: 1, weight: 0.6 },
  { x: 4, y: 1, weight: 0.9 },
  { x: 0, y: 2, weight: 0.9 },
  { x: 1, y: 2, weight: 0.6 },
  { x: 2, y: 2, weight: 0.1 },
  { x: 3, y: 2, weight: 1 },
  { x: 4, y: 2, weight: 0.6 },
  { x: 0, y: 3, weight: 0.3 },
  { x: 1, y: 3, weight: 0.6 },
  { x: 2, y: 3, weight: 1 },
  { x: 3, y: 3, weight: 0.8 },
  { x: 4, y: 3, weight: 0.7 },
  { x: 0, y: 4, weight: 1 },
  { x: 1, y: 4, weight: 1 },
  { x: 2, y: 4, weight: 0.3 },
  { x: 3, y: 4, weight: 1 },
  { x: 4, y: 4, weight: 0 }
])

console.log(
  getPath({ x: 0, y: 0 }, { x: 4, y: 4 })
)

// => [
//   { x: 4, y: 4 },
//   { x: 3, y: 3 },
//   { x: 2, y: 2 },
//   { x: 1, y: 1 },
//   { x: 0, y: 0 }
// ]