Floats would have been waaaaay too slow (and Axe doesn't support them anyway). I use Axe's 8.8 fixed point numbers to move objects as accuratly and as quickly as possible.

Big update !

I've got most of then engines used by this type of games done ! By that, I mean a bullets engine, an enemies engine, a patterns engine and, big news, a boss engine ! Though, I had to remove the bullets' ability to have their own behaviour to keep a good speed at 6MHz.
What's remain now is a bonuses engine, a continue system, and of course everything related to menus. Most of the game core is done, but I only did a full level with its boss, so I need to take care of the 15 other levels and bosses (with my newly-founded team ).

Anyway, eye candy time ! To not spoil the level if you want to try it, I just attached non-animated screenshots

If you want to beat level 1 ... try to do so with the attached program (for MirageOS, and you'll also need prgmIKRGLVLS, it contains the level).

Controls are explained in-game in the tutorial at the start of the game. You can skip it by pressing [×]. For now, the game quits when you get hit, so it's very hard to make it through the level (which only lasts 4 waves) and to beat the boss (which has 192 HP and 3 patterns ). On your ship's sprite, you can see a small 'T'-like thing. Congrats, you found your hitbox

Also, the program runs perfectly (while sometimes a bit slowly) on 6MHz calcs. It doesn't use Full anyway.

Really cool, it's super hard and does slow down quite a bit when there are lots of bullets on screen, but it's still completely playable and actually a little helpful since you can control your ship a little better. With some animations (and more than one life ) it'd be great! You can probably use your bullet-handling routine to make a simple explosion when you get hit The tutorial at the beginning is pretty cool, too. Really, it's a super cool project, though way too hard for me right now!

EDIT: You might consider letting the ship accelerate a little bit when you hold down an arrow, maybe jump 2 pixels at a time, to move around the screen a bit more quickly.

I so have to try this when I get home tonight

the only thing i will say is it feels a little laggy with input. i feel it should be snappier. The only other critique I have is your tracking routines are not targeting the center of the ship but rather the upper left hand side.

Other than that this is pretty sweet

Update !

Got the second level working with of course new enemies and another boss to beat

I also made a quick and ugly lives system : when you get hit, you can't be hit again for 64 frames (you see that with an inverting rectangle on your ship, not definitive). You can also pause with [alpha] (and resume with [x,t,θ,n]) and thus see your lives in the upper right corner.

Small almost-non-spoiling screenshot of the 2nd level :



The game is of course faster and not as ugly on-calc.

Binaries attached

In fact I used a rectangle because I was in an urge and wanted to finish it x) I'll change it to something better soon (dunno what yet).