Dijkstra's algorithm

Many will already be aware of Dijkstra’s algorithm for path finding, well I’ve now implemented this in the game. If you’re unfamilar then take a look at the wikipedia article https://en.wikipedia.org/wiki/Dijkstra%27s_algorithm.

This means the optimum route is no longer based on guess work, and instead based on the actual optimum route.

So level stars and difficulty should be WAY more accurate, and probably a touch more challenging.

On top of that I have made the route reveal show both the route taken and the optimum route, and asteroids are now see through on route reveal to allow you to see more (you can also swipe on the reveal screen to get an even better view).

Finally the oxygen level now shows how many moves are remaining to get a perfect score.