[lua] Logo interpreter

[Jim Bauwens]

I've been a bit busy making a logo interpreter in Lua.
I'm going to participate with it in the Ti-Planet / Inspired-Lua contest (math section).

While I still need to make an on calc ui and editor, here are some screenshots that show some turtle graphics (together with the code):

Code: [Select]

to square
  repeat 4 [left 90 forward 80]
end

repeat 36 [left 10 square]


Code: [Select]

make "x 1
repeat 150 [forward :x left 89 make "x :x + 1]


[Adriweb]

This is awesomeeeeeeee

Congratulations !

For the Lua contest, right ?

[Jim Bauwens]

Thanks =)
Yes, its for the contest

[Stefan Bauwens]

Good luck with all the rest.
I'm not so advanced in languages as you are but.. Good job, I guess.

[Chockosta]

Wow. Good luck, it is awesome.
Not really useful, but I'd love to play with that.

[Jim Bauwens]

Thanks =)

Not really useful

You can visualize lot of mathematical stuff with it

[Spyro543]

How about the mode I suggested where you can see the turtle move and draw the pattern instead of the pattern just appearing?

[Jim Bauwens]

I'm not yet done, just finished the main core.

[Jim Bauwens]

I submitted my first version for the TI-Planet contest.
While its not yet done, most you need is there.

Here is a little animated screenshot:


Note that the colors (grey's) look a bit better on a real calculator

[Xeda112358]

ooh, yum, that looks nice

[Chockosta]

Congrats !

Could you post a link to download ?
TI-Planet staff haven't done it yet, and I really want to play with this awesome program !

[Adriweb]

I'm going to put it on TIPlanet.org today

[Jim Bauwens]

Thanks guys
I'll upload the package after the contest has ended, as there are some bugs that I need to fix.

I just discovered a bug that the calculator reboots sometimes if you have a " in the code.
This is not my fault, but TI's. (Probably will get fixed if I report it)
The problem here is that " is a special token in Logo, and used allot.
One way to be sure it doesn't crash is to replace

Code: [Select]

"thiscode
with

Code: [Select]

first [thiscode]

It has the same effect in Logo.

Edit: as you can see in the screenshot, the bug is fixed in 3.10 (the emu runs 3.10), while I still had 3.02 on my calculator.
So, I'm happy again \o/

[Jim Bauwens]

While there is already a sierpinski curve included, here is sierpinski's triangle (not included):

Code: [Select]

to sierp :n :l
    if :n=0 [stop]
    repeat 3 [sierp :n-1 :l/2 fd :l rt 120]
end

pu bk 100 lt 90 bk 100 pd
sierp 5 200

This is the result:

[Adriweb]

looks awesome for such a small code...

can you comment line by line the code tho ?