/// <summary>
/// Loads the content for the teddy bear and prepare texture
/// </summary>
/// <param name="contentManager">the content manager to use</param>
/// <param name="spriteName">the name of the sprite for the teddy bear</param>
private void LoadContent(ContentManager contentManager, string spriteName)
{
// Load entity texture
_sprite = contentManager.Load <Texture2D>(spriteName);
// Create field of view texture
_fieldOfView = GraphicsHelper.CreateCircle(Behavior.ViewDistance,
_world.GraphicsDevice,
_color);
}