Brimstone

//Clickable button for Unity

void Update()
    {
        StaticUpdate();

        if (Enabled)
        {
            var mouseInRect = false;
            //CHECK IF MOUSE IS IN RECTANGLE
            if (_cam != null)
            {
                _position = _cam.WorldToViewportPoint(_rectTransform.position);
                _position = new Vector2(_position.x * _resolution.x, _position.y * _resolution.y);

                Vector2 mouse = Input.mousePosition;

                var hw = _size.x * 0.28f;
                var hh = _size.y * 0.28f;

                mouseInRect = (mouse.x > _position.x - hw && mouse.x < _position.x + hw &&
                               mouse.y > _position.y - hh && mouse.y < _position.y + hh);
            }
            else
            {
                if (_cam == null)
                    _cam = GameObject.Find("Camera").GetComponent<Camera>();
                if (_cam == null)
                    _cam = GameObject.Find("Main Camera").GetComponent<Camera>();
            }

            //CHECK IF HOVERING
            if (_image != null)
                _image.color = (mouseInRect || _highlight) ? ColorSelected : ColorUnselected;

            //IF MOUSE CLICKED IN RECTANGLE
            if (mouseInRect && Input.GetKeyDown(KeyCode.Mouse0))
                InvokeEvents();
        }
        else
        {
            //Set color if disabled
            if (_image == null) return;
            _image.color = ColorDisabled;
        }
    }