checkCollision.js

 _checkColision(playerLeft, playerTop, obstacleData, newLeft) {
    let isWithingHeight = false
    const wrapperHeight = this._wrapper.offsetHeight
    const obstacleHeight = wrapperHeight / 2
    if (obstacleData.onTop) {
      if (playerTop <= obstacleHeight) {
        isWithingHeight = true
      }
    } else {
      if ((playerTop + PLAYER_HEIGHT) >= wrapperHeight - obstacleHeight) {
        isWithingHeight = true
      }
    }
    if (!isWithingHeight) {
      return false
    }

    if (playerLeft >= newLeft &&
      (playerLeft + PLAYER_WIDTH) <= obstacleData.left + OBSTACLE_WIDTH
    ) {
      return true
    }
    return false
  }