2015-05-02 "The Hobbyist Coder #3 : 2D platformers pathfinding" (2D 向けのパス探索の記事) AI http://www.gamasutra.com/blogs/YoannPignole/20150427/241995/The_Hobbyist_Coder_3__2D_platformers_pathfinding__part_12.php