npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

bridges-generator

v1.0.4

Published

Generates a Hashi puzzle

Downloads

23

Readme

Hashi Puzzle Generator

A library for generating random Hashi puzzles written in TypeScript. Hashi (also known as Bridges, and Hashiwokakero) is a logic puzzle that involves connecting islands with bridges without creating any loops. This library provides a simple API for generating Hashi puzzles of various sizes and difficulty levels.

Links

Generator

You can play with the generator on the Hashi Puzzles application at the following link:

Solver

Also, I have a hashi solver library that is available on

Installation

To install the library, run the following command in your terminal:

npm install bridges-generator

Usage instructions

The library exports a function called generate that takes four parameters:

  • rows: The number of rows in the puzzle.
  • columns: The number of columns in the puzzle.
  • numberOfIslands: The number of islands in the puzzle.
  • doubleBridges: (Optional) The percentage of double bridges in the generated puzzle. The value must be between 0 and 1. If not specified, a default value of 0.2 will be used.

The generate function returns an object with two properties:

  • puzzle: A two-dimensional array representing the puzzle grid. Each element in the array represents the number of that island (0 if there is no island).
  • solution: A two-dimensional array representing the solution to the puzzle. Each element in the array is a string representing the island or the bridge. The following element are can be in the solution:
    • 0 - represents empty space
    • number from 1 to 8 - represents the island
    • | - one vertical bridge
    • $ - two vertical bridges
    • - - one horizontal bridge
    • = - two horizontal bridges

Here is an example of how to use the library to generate a 10x10 puzzle with 5 islands and 20% double bridges:

import { generate } from 'bridges-generator';

const generated = generate(10, 10, 5, 0.2);
console.log(generated.puzzle);
console.log(generated.solution);

Result

Example of generated puzzle:

[
    [0, 2, 0, 0, 0, 3, 0, 0, 1, 0, 0, 0, 0, 1, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 1, 0, 0, 4, 0, 0, 0, 0, 4, 0, 0, 2, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 5, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 3, 0, 0, 2, 0, 2, 0, 1, 0, 0],
    [0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
  ]

The solution to the generated puzzle:

[
    ['0', '2', '-', '-', '-', '3', '-', '-', '1', '0', '0', '0', '0', '1', '0'],
    ['0', '|', '0', '0', '0', '|', '0', '0', '0', '0', '0', '0', '0', '|', '0'],
    ['0', '|', '0', '0', '0', '|', '0', '0', '0', '0', '0', '0', '0', '|', '0'],
    ['0', '|', '1', '-', '-', '4', '-', '-', '-', '-', '4', '-', '-', '2', '0'],
    ['0', '|', '0', '0', '0', '|', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '1', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '0', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '0', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '0', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '0', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '0', '0', '0', '0', '0', '$', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '3', '=', '=', '=', '=', '5', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '|', '0', '0', '0', '0', '|', '0', '0', '0', '0'],
    ['0', '|', '0', '0', '0', '3', '=', '=', '2', '0', '2', '-', '1', '0', '0'],
    ['0', '1', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0']
]

Without code, the solution looks like this:

2---3--1    1
|   |       |
|   |       |
|1--4----4--2
|   |    $
|   1    $
|        $
|        $
|        $
|        $
|        $
|   3====5
|   |    |
|   3==2 2-1
1