slior / logosvg Goto Github PK

Expose the current state - location, angle, and color - as variables available to the program.
Allow expressions using it.

Example:

repeat 10
  if current_y < 100 then
    pc red;
  else
    pc blue;
  end;

  fd 50;
end;

where current_y is a built-in variable exposing the current cursor y location.

Variables defined in inner scopes should shadow variables defined in outer scopes.
This includes parameters.

This should work fine:

let sides = 4;
procedure shape(sides,size):
  repeat sides
    fd size;
    rt 360/sides;
  end;
end;

call shape with sides = 5, size = 50;

sides should be 5 when running the procedure.

Support moving the pen to a point given as an absolute numbers.

Add an explicit "Text" type to the language.

• Allow expressions with strings
• Allow debugging statements (with say).
• parameters to pen color should be strings/text.

Add the ability to set the pen width.
Something like:

pw 5; //sets the pen's stroke  width to 5

This program should be parsed correctly:

let side = 1;
while side <= 4
  say 'side is ' ++ side;
  side = side + 1;
  fd 100;
  rt 90;
end;

currently, the lte (<=) operator isn't parsed.