Drag the green and red points and it will draw a path from the green(start point) to the red(end point).
If you want to use this please give credit. Technical stuff: This uses BFS for pathfinding from the start to the end polygon. The code currently only supports quads, but I might improve it in the future to support n-gons. All polygons must be convex, concave polygons will break it. You have to make your own navmesh, I don't know how to code an algorithm to bake one Made this for an upcoming project https://digestingduck.blogspot.com/2010/03/simple-stupid-funnel-algorithm.html