Scrolling problem; please help!

[BlakPilar]

So I've been working on a (non-smooth-)scrolling engine in my spare time at school and it mostly works the way I want it to so far. When you move in any direction and you're not on the edge of the map, it shows the next block, like in the screenshot (I haven't implemented collision yet). However, as you can tell, it works in every direction but up! I haven't gone through and optimized yet, but I'm going to provide the code for the moving bit. I honestly can't tell why it's not working because the code for each conditional is exactly the same. Please help!

Spoiler for moving code:

X and Y are the person's coordinates on-screen, and Z and [theta] are the coordinates of the top-left corner of where I'm displaying the map from.

..MOVING
If getKey(2)
 If X>1
  X--
 Else
  If Z>0
   Z--
  Else
   X-(X!=0)->X
  End
 End
ElseIf getKey(3)
 If X<10
  X++
 Else
  If Z<(W-12
   Z++
  Else
   X+(X!=11)->X
  End
 End
ElseIf getKey(1)
 If Y<6
  Y++
 Else
  If [theta]<(H-8
   [theta]++
  Else
   Y+(Y!=7)->Y
  End
 End
ElseIf getKey(4)
 If Y>0
  Y--
 Else
  If [theta]>0
   [theta]--
  Else
   Y-(Y!=0)->Y
  End
 End
End

EDIT: If need-be, I can provide all of my code. It really has nothing special to it at the moment.

[epic7]

If Y>0?
Should the 0 be more if you want to not go to the edge?
(unless I'm reading the code wrong)

Wait, what's the problem?

[BlakPilar]

Yeah, I got it I just needed to change Y>0 to Y>1 lol. Thanks, though!

[thydowulays]

I would actually love if you could provide the all the code for this. I want to get a (non-smooth) scrolling tilemapper up for my game Nulled, and this is EXACTLY what I needed. Thanks!

[saintrunner]

I'm actually thinking of turning Caedes into a scroller, and your code would help me too

[BlakPilar]

Woah, sorry guys lol. It's okay now though, I sent it to you both

[shmibs]

these things have been posted dozens of times before. just try poking around the forums for one.
the axe routines thread is a great place to start when looking for that type of thing, and a quick forum search yielded these threads(one of which you started yourself, saintrunner):
http://www.omnimaga.org/index.php?topic=4915.0
http://www.omnimaga.org/index.php?topic=8705.0
http://www.omnimaga.org/index.php?topic=9752.0
http://www.omnimaga.org/index.php?topic=6591.0
http://www.omnimaga.org/index.php?topic=11468.0

tilemapping in axe is basically the most asked, and consequently most well documented, routine on this site.

[saintrunner]

Yeah, I got a big chunk of a nonsmooth scrolling tilemap done....not smooth though

[shmibs]

like i said, look in the routines thread. it has more than one example of smooth scrolling in there. here's one builder posted two years ago(works only for left and right):
http://www.omnimaga.org/index.php?action=dlattach;topic=1532.0;attach=862

and one i posted seven months later(works for all four directions):
http://www.omnimaga.org/index.php?topic=1532.msg68518#msg68518

[BlakPilar]

I don't really venture into the routines thread because I want to find things out by myself. When I understood the basic meaning behind yunhua's smooth-scrolling engine, I decided to try my own one and haven't actually gotten around to fiddling around with it until recently (partly because I just finished Inheritance [awesome book, imo]).

Plus most of the mistakes I make are small silly ones and I eventually end up finding them.

[turiqwalrus]

I don't really venture into the routines thread because I want to find things out by myself.

makes sense. I try to learn stuff by myself as well

partly because I just finished Inheritance [awesome book, imo]

agreed!