A* Pathfinding Project  4.0.3
The A* Pathfinding Project for Unity 3D
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Fast Facts

Just some random facts about the system:

Search speed (nodes/ms, including overhead) Depends, usually around 1000 (on my computer), but can go up to 2500 for some graphs (few connections per node yields faster searches). For example a search speed = 1000, a path which searches 22000 nodes will take about 22 ms to calculate. If running on more than one thread (a* pro feature) it can reach 3500 nodes per ms.
Creator's name Aron Granberg
Graph structures supported Grid, Point, Navmesh
Node Position precision 0.001 (1/1000) Integer values
Node Position Range (xyz) ± 2147483
Requires Unity Pro No
Works with Js Yes, at the click of a button. The button can be found in the A* Inspector–>Settings–>Editor–>Enable Javascript Support
Works for mobile (e.g iPhone) Users have tested the project on Android and iPhone, both seem to work without any problems