Hi guys !

Here is my Ti-Concours entry for the 3rd round ! Jetpack 8x+ is a port of the famous game Jetpack Joyride of the iDevices, for all the 83+/84 calculators

I started it something like a month ago, just at the end of the 2nd round, so I nearly finished it, even I can add a lot of features.

In this game, you are Barry, a man who stole the secret Jetpack, and you have to escape the labo alive by avoiding zappers (electric arcs), rockets and lasers.

Of course, the game is endless and you just have to run the furthest you can.

Here is the last screenshot (it's outdated !) :



I still have to increase difficulty when you run, else a good player will run and run and run and run and run ...

Just had a random thought: if it scrolls one pixel per frame and you get it to run at ~60 fps, you might be able to get away with having a monochrome background and have the scrolling act like the scanlines.  Then it might run a bit faster, only having to scroll one buffer?
Not sure how running would be done, tho..aside from maybe scrolling three pixels at a time or having the normal walk be slowed down?

Yeah, I think use only the background of the back-buffer will speed it up a lot, I'll test

Just shift the back buffer and only draw the new line you've shifted in!

I can't do that, I need to use ClrDraw each frame because of particles anims and the very large amount of sprite I can't mask. So I clear the screen and rewrite the whole shifted buffer each frame.

Oh no, I'm not using any drawing functions, just bit storage in L6, so it's really fast (I use Horizontal - and Copy(Pic1BG,L6))

it would take 48*1512 bytes of hex

That's not it, here is how I do :

• I copy the two first rows of pixels at the end of the buffer
• I shift the buffer
• I copy the buffer to the screen

The screen is updated at the end of the frame.

Maybe, but the fact is I have the whole image in plain hex, and that's not the good format for sprite commands. Also, bit manipulation is really fast ...