Here's a fantastic intro from Red Blob Games: https://www.redblobgames.com/pathfinding/a-star/introduction.html https://www.redblobgames.com/pathfinding/a-star/

Here's a fantastic intro from Red Blob Games: https://www.redblobgames.com/pathfinding/a-star/introduction.html https://www.redblobgames.com/pathfinding/a-star/introduction...