Rather than having movement as it is currently, where a right click results in instant movement, consider changing it so that a right click draws out the path of movement your character will take, and then a second right click on the same square confirms and commits the movement. I would have it work something like this:

Here the cross shows the target destination. The blue line shows the movement that the character can take with their current moves, and where they will go if the move is committed. The red shows the moves they woudl take if they had the points, but they don't.

Obviously round off the corners and make it look prettier in game, this is just a fast mockup, but something like this to show players the moves they are asking for, and allowing them to decide to either make it, or change the target.