bool isWithinAngle(Vector2 playerPos, float playerRotation, Vector2 checkPos, float maxAngle)
{
    Vector2 difVector = playerPos - checkPos;

    float radRotation = (float)Math.Atan2(difVector.Y, difVector.X);
    float degRotation = MathHelper.ToDegrees(radRotation);

    if (Math.Abs(degRotation - playerRotation) < maxAngle)
    {
        return true;
    }
    else
    {
        return false;
    }
}