big teeth monster game - OpenProcessing

mySketch
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let pX, pY;
​
function setup() {
  createCanvas(windowWidth, windowHeight);
  colorMode(HSB);
  ellipseMode(CENTER);
  pX = 0;
  pY = height / 2;
}
​
const hues = [
  [0, 0, 10, 1],
  [0, 0, 90, 1],
  [0, 0, 30, 1],
  [10, 90, 35, 1]
];
let hueIndex = 0;
let gameOver = false;
​
function switchHue() {
  hueIndex = (hueIndex + 1) % hues.length;
}
function backHue() {
  if (hueIndex - 1 < 0) {
    hueIndex = hues.length - 1;
  } else {
    huesIndex = hueIndex - 1;
  }
}
function reset() {
  gameOver = false;
}
​
function draw() {
  background(10, 100, 90, 1);
  stroke(hues[hueIndex]);
  strokeWeight(1)
  line(0, height / 2 + 50, width, height / 2 + 50);
​
  if (keyIsDown(LEFT_ARROW)) {
    pX -= 10;
    if (pX < 0) {
      pX = width;
      backHue();
    }
  }
  if (keyIsDown(RIGHT_ARROW)) {
    pX += 10;
    if (pX > width) {
      pX = 0;
      switchHue();
    }
  }
  fill(0);
  strokeWeight(20);
  if (!gameOver) {
    ellipse(pX, pY, 50, 80);
  }
  const overscan = 20;
  const period = 5; //(mouseX/width) * 100;
  let amp = sin(frameCount / 100) * height * 0.75;
  amp = mouseY / height * height / 2;
​
  const gameoverY = (height / 2) - 80;
  if (amp > gameoverY) {
    gameOver = true;
  }
​
​
  noFill();
  beginShape();
  for (let x = -overscan; x < width + overscan; x++) {
    const y = sin(x / period) * amp;
    vertex(x, -overscan + y);
  }
  endShape();
​
  beginShape();
  for (let x = -overscan; x < width + overscan; x++) {
    const y = sin(x / period) * amp;
    vertex(x, height + overscan + y);
  }
  endShape();
}
​
function mousePressed() {
  reset();
}