KhanPJS.js

KhanPJS is just Khanacademy's PJS enviroment but optimized and without the need of their live editor.

Almost every PJS program can run in it. The only limitations being things i intentionally removed.

CDN

https://cdn.jsdelivr.net/gh/L1quidH2O/KhanPJS/build/KhanPJS.min.js

HOW TO USE

var pjs = new KhanPJS({ // default values:
    canvas: document.querySelector("canvas"),
    enableLoopProtect: true,
    infiniteLoopCallback: function(error){},
    startupTimeout: 2000,
    programTimeout: 500,
    loopCheck: 1000,
});

pjs.runCode("background(255, 0, 0);", error=>console.log(error));

The first paramerer is an options object, all options are optional.

canvas (HTMLCanvasElement), canvas to use for PJS. defaults to create its own. (OffscreenCanvas not supported)
```
var pjs = new KhanPJS();
document.body.appendChild(pjs.canvas);
```
enableLoopProtect, defaults to true
infiniteLoopCallback, defaults to empty function
startupTimeout, maximum time to wait for a program to load (some programs take a long time to load terrain/textures). defaults to 2000
programTimeout, maximum time program is allowed to freeze. defaults to 500

loopCheck, amount of iterations it takes before checking if theres an infinity loop. defaults to 1000. (hard to explain so see code)

for(var i = 0; i < 10000; i ++){
    //---placed by KhanPJS---
    KAInfiniteLoopCount++;
    if (KAInfiniteLoopCount > loopCheck) {
        //checks if program is frozen for too long
        KAInfiniteLoopProtect();
        KAInfiniteLoopCount = 0;
    }
    //-----------------------

    // do slow stuff
}

Methods:

pjs.runCode("", error=>console.log(error));    //runs code
pjs.restart();      //restarts program
pjs.size(400, 400); //changes canvas size

//getters/setters:
pjs.enableLoopProtect = true;
pjs.startupTimeout = 2000;
pjs.programTimeout = 500;
pjs.loopCheck = 1000;

// other methods arent important

FEATURES

Added ES6 class support
Optimized some parts of Processing.js

LIMITATIONS

Some "hacks" that are used by user programs but arent used by KhanPJS now have the same return type but no functionality (ex: PJSCodeInjector.propListString returns an empty string)
Removed third party libraries that might be used by some user programs (ex: i18n)
Only these classes are in the top scope
- ASTTransforms
- ASTTransforms
- walkAST
- AllImages
- OutputImages
- ExtendedOutputImages
- OutputSounds
- PJSCodeInjector
- LoopProtector
- PJSUtils
- Processing

NOTES:

Processing.js is huge and there are still some useless things in it.