|Last Updated||Ratings||Unique User Downloads||Download Rankings|
|2003-09-10 (13 years ago)||54%||Total: 2,332 This week: 1||All time: 1,608 This week: 1,109|
|logoclass 1.0||GNU Lesser Genera...||4.0||Emulators, Games, Flash, Parsers|
This class implements a full-featured interpreter of the Logo programming language.
This is the readme that goes with the logo class from Rene Kluwen <firstname.lastname@example.org>. This class is an implementation of a Logo interpreter (parser and graphical output). The whole thing consists of one single PHP class. License: LGPL. See: http://www.gnu.org/copyleft/lesser.html. Parsing is mostly done using regular expressions. Arithmetic functionality is 'borrowed' from PHP, using the eval() function. Output needs SWF support in your PHP version. Logo resume: ** ** The basic Logo commands: ** ** FD 100 Move the turtle forward 100 steps. ** RT 90 Turn the turtle to the right 90º. ** LT 90 Turn the turtle to the left 90º. ** BK 100 Move the turtle backwards 100 steps. ** PU Pick the turtle's pen up off the paper. ** PD Put the turtles pen back down on the paper. ** CS Clear the screen and start over. ** HT Hide the turtle (triangle). ** ST Show the turtle (triangle). ** REPEAT 3 [...] Repeat the commands 3 times. ** MAKE "var value Set variabele var to value ** TO wordname :par1 :par2 ... Wordname is a new word with par1, par2... as parameters ** Todo: implement some music commands. Todo: Conditional execution (IF), Local variables, more commands (such as POLY, SETXY, etc.).
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