Add ability to increase/decrease terrain detail

[amterp]

Stretch goal.

Add the ability (probably via UI buttons) to increase or decrease the level of detail for the terrain. This shouldn't be too difficult, due to the nature of the algorithm.

Point of consideration:

• Random number added at each step of the algorithm to each node.
• Could have some sort of way for, when detail is decreased and then increased, remembering these numbers that were added and where, so that the exact same terrain is generated in this scenario.
• Probably not worth the effort, and might not even be desired. Would kind of cool to have the ability to decrease and then increase the detail again, getting a slightly different terrain.

[amterp]

Been working a bit on the terrain generation algorithm, and this doesn't seem very easy to implement, since the original nodes would have to move. There might be some way around it, but I don't think it's worth thinking too much about this one.

[amterp]

Actually it can be implemented. Instead of changing any nodes, however (as in changing the number of nodes in our data structure), simply stop at an earlier step in the diamond-square algorithm i.e. before every single node has been given a value, and render based on that. Should perhaps still be possible to add.

[amterp]

The algorithm has been completely rewritten to make it fast. This means it's now written in such a way that this functionality is both undesirable, because max resolution generates so quickly, and unrealistic to implement. This functionality is not to be implemented, hence the close.