https://github.com/vaiorabbit/jumppointsearch

A Ruby implementation of Jump Point Search (JPS) and A*
https://github.com/vaiorabbit/jumppointsearch

astar-algorithm dijkstra-algorithm jump-point-search nanovg ruby

Last synced: about 1 month ago
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A Ruby implementation of Jump Point Search (JPS) and A*

• Host: GitHub
• URL: https://github.com/vaiorabbit/jumppointsearch
• Owner: vaiorabbit
• Created: 2015-07-05T08:32:54.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-10-07T08:19:29.000Z (about 6 years ago)
• Last Synced: 2023-03-24T06:47:34.096Z (almost 2 years ago)
• Topics: astar-algorithm, dijkstra-algorithm, jump-point-search, nanovg, ruby
• Language: Ruby
• Size: 1.81 MB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        


# Jump Point Search Demonstration #

*   Created : 2015-06-14

*   Last modified : 2015-07-20

A JPS implementation used to make these videos:

* Comparison of search algorithms (A*/JPS)

  * [![](http://img.youtube.com/vi/O81eDgSZfB4/mqdefault.jpg)](https://www.youtube.com/watch?v=O81eDgSZfB4)

* Comparison of search algorithms (Dijkstra/A*/JPS)

  * [![](http://img.youtube.com/vi/ROG4Ud08lLY/mqdefault.jpg)](https://www.youtube.com/watch?v=ROG4Ud08lLY)

## Console Demo ##

    $ ruby JumpPointSearch.rb road_map.txt -astar

↓



    $ ruby JumpPointSearch.rb road_map.txt -jps

↓



## Reference ##

* Online Graph Pruning for Pathfinding on Grid Maps [D. Harabor and A. Grastien. (2011)]

  * http://users.cecs.anu.edu.au/~dharabor/data/papers/harabor-grastien-aaai11.pdf

* https://en.wikipedia.org/wiki/Jump_point_search

## License ##

The zlib/libpng License ( http://opensource.org/licenses/Zlib ).

    Copyright (c) 2015-2018 vaiorabbit 

    This software is provided 'as-is', without any express or implied

    warranty. In no event will the authors be held liable for any damages

    arising from the use of this software.

    Permission is granted to anyone to use this software for any purpose,

    including commercial applications, and to alter it and redistribute it

    freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not

       claim that you wrote the original software. If you use this software in a

       product, an acknowledgment in the product documentation would be

       appreciated but is not required.

    2. Altered source versions must be plainly marked as such, and must not be

       misrepresented as being the original software.

    3. This notice may not be removed or altered from any source distribution.