Introduction - If you have any usage issues, please Google them yourself
A-star algorithm for the shortest path. Formula is expressed as: f (n) g (n)+h (n), where f (n) the initial state via the state n to the target state the cost estimate, g (n) is in the state space the initial state to actual cost state n, h (n) is an estimate of the cost the state to the target state n the best path.