Physix Pac-Mac for smart devices

// Initialize the Pac-Man character's position and velocity
let x = 50;
let y = 50;
let vx = 0;
let vy = 0;

// Set up the game loop
function gameLoop() {
  // Update the Pac-Man character's velocity based on the device's orientation
  vx += acceleration.x;
  vy += acceleration.y;

  // Update the Pac-Man character's position based on its velocity
  x += vx;
  y += vy;

  // Check for collisions with walls
  if (x < 0 || x > gameBoardWidth || y < 0 || y > gameBoardHeight) {
    // Reverse the direction of the velocity to bounce off the wall
    vx = -vx;
    vy = -vy;
  }

  // Check for collisions with obstacles
  for (let i = 0; i < obstacles.length; i++) {
    const obstacle = obstacles[i];
    if (x + characterWidth > obstacle.x && x < obstacle.x + obstacleWidth &&
        y + characterHeight > obstacle.y && y < obstacle.y + obstacleHeight) {
      // Reverse the direction of the velocity to bounce off the obstacle
      vx = -vx;
      vy = -vy;
    }
  }

  // Check for collisions with power pellets
  for (let i = 0; i < powerPellets.length; i++) {
    const powerPellet = powerPellets[i];
    if (x + characterWidth > powerPellet.x && x < powerPellet.x + powerPelletWidth &&
        y + characterHeight > powerPellet.y && y < powerPellet.y + powerPelletHeight) {
      // Increase the score and remove the power pellet
      score += powerPellet.points;
      powerPellets.splice(i, 1);
    }
  }

  // Check for collisions with ghosts
  for (let i = 0; i < ghosts.length; i++) {
    const ghost = ghosts[i];
    if (x + characterWidth > ghost.x && x < ghost.x + ghostWidth &&
        y + characterHeight > ghost.y && y < ghost.y + ghostHeight) {
      // Decrease the lives and reset the Pac-Man character's position
      lives--;
      x = startingX;
      y = startingY;
    }
  }

  // Redraw the game board with the Pac-Man character at its new position
  drawGameBoard();
}

// Set up the DeviceOrientation event listener to detect changes in the device's orientation
window.addEventListener('deviceorientation', (event) => {
  // Update the acceleration based on the device's alpha, beta, and gamma values
  acceleration.x = event.alpha;
  acceleration.y = event.beta;
});

// Start the game loop
setInterval(gameLoop, 1000 / 60); // 60 FPS