KhanPJS.js

KhanPJS is just Khanacademy's PJS enviroment.

Almost every PJS program can run in it.

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.

  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

NOTES

• Some hacky code may no longer work

• Removed third party libraries that mightve be used by some user programs

• Only these classes are in the top scope

  • ASTTransforms
  • ASTTransforms
  • walkAST
  • AllImages
  • OutputImages
  • ExtendedOutputImages
  • OutputSounds
  • PJSCodeInjector
  • LoopProtector
  • PJSUtils
  • Processing