Pathfinding demo using GdxAI in about 300 lines. Almost all of the code is inside PathFindingDemo.java.
Green pixels are the passable tiles, red are obstacles. You can switch between these two states by pressing SPACE key.
Pink pixel (set by clicking C) is the start point.
Blue pixel (set by clicking X) is the end point.
Brown pixels makes the path, generated by clicking ENTER.