Didn't he have a topic somewhere on here too for it?

*cough*Bump*cough*

I remember playing that in AP Physics last year

Very cool simulator though

So Idecided to make a basic routine for doing the undo process. I'll type it up when I get home, currently at school waiting for class to start. I don't know how you were compressing your data so I just created my own way.

Edit:
Here is the example I made.
ZStandard
104→Xmax
72→Ymax
ZInteger
ClrDraw
For(A,0,31
Horizontal A
End
"L1(A→u
{100621062,301030,10059.1,20359.1,30759.1,110027.1,120327.1,130727.1,201059.1,201027.1,56.2,156.2,107252.3→L1
For(A,1,dim(L1
iPart(E2fPart(u/E2→Z
iPart(E2fPart(u/E4→X
fPart(u→C
If .1=Ans
Then
iPart(10fPart(u/E5→B
iPart(u/E5
If not(Ans
Pt-On(X,Z,B
If 1=Ans
Pt-Off(X,Z,B
If 2=Ans
Pt-Change(X,Z
End
If .2=C
Then
If X
Horizontal Z
If not(X
Vertical Z
End
If .3=C
Circle(X,Z,iPart(E2fPart(u/E6)),{i
If not(C
Line(iPart(E2fPart(u/E8)),iPart(E2fPart(u/E6)),X,Z,iPart(u/E8
End
Every time in that code that you see a capital letter "E" it is the scientific notation "E" and "L1" means L1. Also, I'll go over how I compressed the data:

If a element does not have a decimal part it is a Line( command, .1 is a Pt-On/Off/Change command, .2 is a Vertical or Horizontal command, and .3 is a Cirlce( command.

For Line(:
-Nine total stored numbers.
--First one is for it is drawing (1) a line or erasing (0).
--The next eight are the X1, Y1, X2, and Y2 coordinates (in groups of two), respectfully.

For Pt-On/Off/Change:
-Six total stored numbers:
--First one says what kind of command it is (Pt-On (0), Pt-Off (1), or Pt-Change (2)).
--Second number says what kind of point (dot (1), square (2), or cross (3)) (Only used for Pt-On and Pt-Off).
--The next for are the X- and Y-coordinates (in groups of two), respectfully.

For Horizontal and Vertical:
-Three total stored numbers:
--First one says what command it is (Horizontal (1) or Vertical (0)).
--The next two are the coordinate used (one two digit number).

For Circle(:
-Six total stored numbers:
--The first is the radius of the circle to be made (one two digit number).
--The next four are the X- and Y-coordinates (in groups of two), respectfully.

So, if you put the zeros back in the list would look like this:
{100621062,000301030,010059.1,020359.1,030759.1,110027.1,120327.1,130727.1,201059.1,201027.1,056.2,156.2,107252.3}

Hopefully that all makes sense. Also, I'm sure there are some optimizations that could be made to that, I just made it real fast for the sake of an example so wasn't really trying to optimize.

The formula I'm using is 100V+X+.01Y

What formula is that? (By the way, it can be one byte smaller if you do VE2+X+.01Y.

It actually would be pretty simple to implement, especially if you're only going to make it a one list cap on the amount of content.

Edit:
Also depending on how you store your data, but it still should be easy.

Edit:
What Window settings are you using? (Xmin=0, Xmax94, Ymin=-62, Ymax=0?)

These look really sweet. I don't however really understand how to play Qwerty's or Shmib's most recent one, but oh well. They still look fun.

Another good idea would be to switch which one is invisible, like for a bit both are visible, then they start switching between the ship being visible and the track being visible, then the pauses get longer, and longer to make it harder.

Ahhhh, ok.