Area 2 beaten. Though I'm not sure what I should do for entertainment. Feel free to give suggestions.
For those curious, I actually get enough points to earn two stocks in this area. This means I skip a ship upgrade animation, going directly to the fourth ship.
Incidentally, the ships have the following qualities:
1st: Basic shots only
2nd: Gains a charged shot
3rd: Graphically wider charged shots (
I haven't checked if it is mechanically wider)
4th: Faster charged shot
5th: Going "off-road" no longer slows you down. You still take damage, though.
6th: Very fast charged shot
A two-byte value at address
7E18EF tells you how charged your shot is. When it is 0xE000 or greater, you may release a powerful shot. The 2nd and 3rd ships charge at +0x0200 per frame, 4th and 5th charge at +0x0280 per frame, and the 6th ship charges as +0x0400 per frame.
Effectively, it takes 112 frames to charge for 2nd and 3rd ships, 90 frames for 4th and 5th ships, and 56 frames for the 6th ship. I demonstrate many times in the above run that I can fire basic shots while charging up a powerful shot. Firing these basic shots like this delays the charge time by a single frame per shot.
If anyone who plans to beat the SDA record on console wants to know the mechanics of shooting while charging, it is difficult to pull off consistently. You must, on the same frame, release one firing button, Y A or R, and press a different one of Y A or R. Any differences, and either you don't shoot, or you lose your charge.
If they overlap, you don't fire a single shot, meaning you pressed the other button
before you released the one you were previously holding. If there's a gap, you lose the charge and fire a basic shot or two, meaning you pressed the new button
after you released the old one. The timing necessary is cruel, down to frame-precision is necessary. But at least you can feel what your hands are doing, and you get quick feedback on whether you failed or not, and which way you failed on top of that.
Trouble is the fact that, from console power-on, unless there's some cheat code I'm unfamiliar with, you need to play through the first area or two before you can get a ship with charged shots to practice with. It's not convenient to get to the point where you can practice.
But if those SDA console speedrunners want to try, I hope these instructions let you know what to shoot for. Have fun, as always!