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If I understood you correctly, you only want to know whether two tiles, specified by their 2D offset coordinates, are adjacent or not. For any question related to hexagon grids, I'd recommend to refer to the Hexagonal Grids page by Amit Patel. It contains the mathematical backgrounds as well as excellent animated interactive examples, and probably ...


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Breadth First Search can calculate every location reachable from a start position, and it can also count how many steps to that location. (If some steps take more "moves" then use Dijkstra's Algorithm instead). See the fourth demo on this page. You would tell the algorithm to stop after some number of moves, so that it doesn't keep exploring the rest of the ...



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