​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

}

​

function castSpell(spell) {

  console.log(Object.keys(spell).join(", "));

}

​

function keyPressed() {

  if(validKeyCode(keyCode)) {

    spell[key.toLowerCase()] = true;

  }

}

​

function keyReleased() {

  if(validKeyCode(keyCode)) {

    delete spell[key.toLowerCase()];

  }

  if(key === " ") {

    castSpell(spell);

  }

}

​

function validKeyCode(code) {

  return code >= 65 && code <= 90;

}