public UIButton(CCSprite sprite)
{
_sprite = sprite;
sprite.AnchorPoint = CCPoint.AnchorUpperLeft;
AddChild(sprite);
var clickListener = new CCEventListenerMouse();
clickListener.OnMouseUp = (ev) =>
{
if (sprite.IsClickOnMe(ev) && OnClick != null)
{
OnClick.Invoke(ev);
}
};
AddEventListener(clickListener);
}