Levels and Waves

A major step towards a game with progression and escalation. Waves and Levels! The game will now spawn enemies in waves which will increase in number as you progress through the levels.

It was definitely worth drafting the system out on paper first, as it made it far easier to figure out exactly what each part needed to actually do. Once that was ironed out, implementing it was fairly straightforward. A bit of fiddling to get it to hooked up to the previous spawn system, and we were off to the races.

While a health system for the enemies is in place, it's not really usable without some hit feedback for nondestructive hits. Even the destructive hits only have feedback because the enemy disappears. That ought to be the next major step, implementing hit feedback to allow for enemies with more health.