I am working on a particle simulator game in axe and am having trouble using px1-test( in multiple situations, here is the list of problems and codes:

1. I am trying to use Px1-test(X,Y to test collision for gravity. The game uses px1-on(X,Y to draw elenents(they are all one pixel wide) and am trying to make it so that when the user presses [2nd] it places a sand particle at the X Y coordinates and immediately the sand particle begins to fall until it hits another black pixel. I would think that doing :If getkey(54) and px1-test(X,Y)~doesn't equal symbol~1  :X+1->X :Pt-on(X,Y) would work but it does not, can anyone help me with this, I see moo reason why this doesn't work, all it does when you press 2nd is nothing... This is my main problem, the others are not as important.

You might want to use vars other than X and Y for coords, the OS uses X and Y for some graphing stuff and some drawing commands modify them, this causes problems that don't exist when you use any vars other than X/Y.

Just noticed this wasn't for basic. Oops, sorry.

First off, ~doesn't equal symbol~ can be replaced by !=, which is much easier to type. Secondly, the commands use a lowercase 'l' not the number '1'. about the code, you seem to use pxl-Test( and then Pt-On(. Pt-On( is for drawing sprites, which I doubt that you are trying to do at the moment. You should probably use Pxl-On( instead.

All of which I was just about to say.

Piguy-3.14, do you think I could see your source (up to you)? I have done a lot of this type of stuff, and could probably help...