starting to feel like a game!

Over the Christmas break I got a bunch of time to work on this prototype shoot-em-up. New features:

• Enemies arranged in formation, SPACE INVADERS style.
• Numbered waves - when one is cleared we move to the next. Waves have randomized patterns.
• The first five waves go up in difficulty and introduce two new enemy types.
• Powerups - the default weapon can have increased fire rate, and two extra  weapons are collected as drops. The drops are gated so you need to find more early items to get the best later ones.
• Enemies shoot more often as their numbers dwindle.
• Variable difficulty level that affects how often enemies shoot and how often powerups drop. Current just a hardcoded number but the plan is to expose this on the title screen (Easy/Medium/Hard).
• Everything has a sound effect now.

These things are still placeholders or not done yet:

• Explosions are just placeholders.
• Particle effects! There are none yet.
• Boss enemy. The art is done, just need to add behavior.
• More HP for some enemies to differentiate the player's weapons better.
• More enemies.
• Scoring.
• Music.

The CRT effect is an amazing piece of work by carlc27843 on GitHub, check it out at https://github.com/carlc27843/pico8-crt-plate

Thanks to Nerdy Teachers for posting about the CRT effect! https://nerdyteachers.com/PICO-8/Pico-View/?issue=11#htmltemplates