okay

Edit : Save Units (not save system) added, but it remains impossible to change room because doors doesn't working yet. I' hard working on it of course

By save units do you mean the spots where you save your game or do you mean preserving enemy/sprite locations even when they're out of the screen?

i'm confused a little, however i think your map system isn't ideal. here you might find a simpler way...
Data(0,offset_to_room2_data,offset_to_room3_data,etc)->GDB1
[<all map data strewn together>]->GDB2

then say your variable for the current level is L. to display it you'd just start reading from GDB2+{GDB1+L}.
if you need to have GDB1 contain sizes of the map, this can be modified to work.
if your current level is N, just make sure you get the sum of {GDB+[1..N-1]}, and start reading from that + GDB2

yes this will work for large maps, as long as your offsets are correct. for example, if you had 3 maps each 120, 2375, and 8 bytes respectively, here's the code:
Data(0,120,2495)->GDB1
[hexcode for all maps]->GDB2
0->L
{{GDB1+L}+GDB2} // first byte of first map
{{GDB1+L+1->L}+GDB2} // first byte of second map
{{GDB1+L+1->L}+GDB2} // first byte of third map
or, if it's essential that you know the size of each map and not where the data starts:
Data(120,2375,8)->GDB1
[hexcode for all maps]->GDB2
0->L
{{GDB1+sub(OFF,L)}+GDB2} // first byte of first map

{{GDB1+sub(OFF,L+1->L)}+GDB2} // first byte of second map
{{GDB1+sub(OFF,L+1->L)}+GDB2} // first byte of third map
Return
Lbl OFF
0->O    // offset
For(Z,1,r1
{GDB1+Z}+O->O
End:O
Return

not the most efficient code (i'll let you optimize it), but it works

how large are your maps by the way? i mean.. it'll work for every map as long as all your map data is under 65535 bytes, which i'm assuming it is.

Wow I love that screenshot! I noticed that the camera only starts moving when you start falling down, though. I wonder if you could fix that? Otherwise it really looks awesome.

Your map data kinda reminds me how Metroid II and Reuben series were setup. I never figured out a better way, but I was using TI-BASIC so I was more limited.

I hope you don't run into such bugs too much. They can be a pain sometimes. Good luck!

Wow, that looks nice!  Great job!

Progress :
- few minor bugs fixed
- physics & display system updated, to allow next update
- room change working now !! (great thanks nemo but I used your method in a different way )
- missile tanks added !!

Here is my today's and yesterday's work

(screenies if I could have enough time )

WOW, missiles, very good!


My questions:
> Are enemies done yet?
> How large is the program so far?
> What are the important things you still have to do before big release?

1) ennemies moving like metroids (flying and following samus) and ennemies moving between 2 points coded (it still remains me to code these walking around walls these what make me most problems )
2) The program takes now around 8000Ko with the 3 rooms test map, but it will be released as app and will be optimized later
3) It remains to me to code all weapons, the ennemies what aren't working, bosses, map. Here is !

Any other questions ?

AI Enemies and Non-AI Enemies MIX, fantastic!
8000K is not much (for me) and don't forget that an Application's size is always a multiple of 8, so it can't be optimized that freely.

Weapons shouldn't be very hard since you already made bullets working
Bosses will be a bit harder, since they're special enemies
Maps... You have an engine or code all of them from scratch?

If you have an engine, it shouldn't be that hard