let taps = 0;
let tapLimit = 1000;

function sendTouchEvent(x, y, element, eventType) {
  const touchObj = new Touch({
    identifier: Date.now(),
    target: element,
    clientX: x,
    clientY: y,
    radiusX: 2.5,
    radiusY: 2.5,
    pageX: x,
    pageY: y,
    rotationAngle: 10,
    force: 0.5
  });

  const touchEvent = new TouchEvent(eventType, {
    cancelable: true,
    bubbles: true,
    touches: [touchObj],
    targetTouches: [],
    changedTouches: [touchObj],
    shiftKey: true
  });

  element.dispatchEvent(touchEvent);
}

function getRandomInt(max) {
  min = Math.ceil(1);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - 1)) + 1;
}

function getSign(xVariance, yVariance) {
  const denominator = getRandomInt(6);
  return (xVariance + yVariance) % denominator == 0;
}

const canvas = document.querySelector('.Canvas');

function sendDefaultTouch() {
  const xVariance = getRandomInt(21);
  const yVariance = getRandomInt(31);

  const xSign = getSign(xVariance, yVariance);
  const ySign = getSign(xVariance, yVariance);

  const xBase = 170;
  const yBase = 320;

  let finalX, finalY;

  if (xSign) {
    finalX = xBase + xVariance;
  } else {
    finalX = xBase - xVariance;
  }

  if (ySign) {
    finalY = yBase + yVariance;
  } else {
    finalY = yBase - yVariance;
  }

  sendTouchEvent(finalX, finalY, canvas, 'touchend');
}

const interval = setInterval(function() {
  sendDefaultTouch();
  taps++;
  if (taps > tapLimit) {
    clearInterval(interval);
  }
}, 87);