## DESCRIPTION: Ruby interface to a C++ implemention of the A\* search algorithm. The C++ implementaion is found here <http://code.google.com/p/a-star-algorithm-implementation/> ## FEATURES: ## SYNOPSIS: See `spec\castar_spec.rb` for usage examples. Create an empty map and plan a path across it: require 'castar' include Castar map = init_map(:width => 4, :height => 3) astar = HeyesDriver.new(map, HeyesDriver::EIGHT_NEIGHBORS) astar.run(0,0,3,2) puts get_map_with_path(astar) |S|1|1|1| |1|*|1|1| |1|1|*|G| Load a map from a text file and plan a path: map = load_map('./spec/map_20.txt') astar = HeyesDriver.new(map, HeyesDriver::EIGHT_NEIGHBORS) astar.run(0,0,19,19) puts get_map_with_path(astar) |S|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1| |1|*|*|*|*|*|1|1|1|1|1|1|1|1|1|1|1|1|1|1| |1|1|9|9|9|9|*|1|1|1|1|9|9|9|9|9|9|9|9|9| |1|1|9|9|9|9|1|*|1|1|1|9|9|9|9|9|9|9|9|9| |1|1|9|9|9|9|1|1|*|1|1|9|9|9|9|9|9|9|9|9| |1|1|9|9|9|9|1|1|1|*|1|9|9|9|9|9|9|9|9|9| |1|1|9|9|9|9|1|1|1|1|*|9|9|9|9|9|9|9|9|9| |1|1|9|9|9|9|1|1|1|1|*|9|9|9|9|9|9|9|9|9| |1|1|1|1|1|1|1|1|1|1|*|9|9|9|9|9|9|9|9|9| |1|1|1|1|1|1|1|1|1|1|*|9|9|9|9|9|9|9|9|9| |1|1|1|1|1|1|1|1|1|1|1|*|1|1|1|1|1|1|1|1| |1|1|1|1|1|1|1|1|1|1|1|1|*|*|*|*|*|1|1|1| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|*|1|1| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|1|*|1| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|1|1|*| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|1|1|*| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|1|1|*| |1|1|1|1|1|9|9|9|9|9|9|9|9|9|9|9|9|1|1|*| |1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|*| |1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|G| ## REQUIREMENTS: * Ruby 1.9 * C compiler for C extensions ## DEVELOPMENT To modify the gem in a cloned repo this is what I'm doing (from root of gem): bundle install cd ext/ ruby extconf.rb make These steps will install the development dependencies, build the Makefile and compile the C++ code. Running bundle exec rspec ./spec should show all tests passing. To clean up the autogenerated Makefile and the compiled objects: cd ext/ make realclean If you need to regenerate the ruby interface functions `heyes_wrap.cxx`, run: cd swig/ swig -c++ -ruby heyes.i mv heyes_wrap.cxx ../ext If you are just trying to run the tests: rake build gem install pkg/castar-0.0.1.gem builds the gem and installs it to your local machine. gem which castar tells you where it is. You can then cd to that directory and run the tests as above (but since you're not in a git repo you can't commit them). I followed the instructions [here](https://github.com/radar/guides/blob/master/gem-development.md) for using Bundler to create the gem. ## INSTALL: * gem install castar ## LICENSE: (The MIT License)

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