// Update is called once per frame
void Update ()
{
//Get the mouse position on the screen and send a raycast into the game world from that position.
Vector2 worldPoint = Camera.main.ScreenToWorldPoint(Input.mousePosition);
LayerMask layMask = 1 << 8;
RaycastHit2D hit = Physics2D.Raycast(worldPoint, Vector2.zero, Mathf.Infinity, layMask);
InputObject pointedInputObject = null;
pointedGameObject = null;
if(hit.collider != null)
{
pointedGameObject = hit.collider.gameObject;
pointedInputObject = pointedGameObject.GetComponent<InputObject>() as InputObject;
}
//If something was hit, the RaycastHit2D.collider will not be null.
if (pointedInputObject != null)
{
pointedInputObject.WhenHangingOver();
}
if (Input.GetMouseButton(0))
{
if(objectDraggingFrom == null)
{
if(pointedInputObject != null)
{
objectDraggingFrom = pointedInputObject;
objectDraggingFrom.WhenDragged();
}
}
else
{
objectDraggingFrom.WhenDragging();
}
isPressed = true;
}
else
{
if(isPressed && objectDraggingFrom != null && pointedInputObject != null)
{
objectDraggingFrom.WhenMouseReleased();
if(objectDraggingFrom == pointedInputObject)
{
pointedInputObject.WhenReleased();
}
else
{
objectDraggingFrom.WhenDraggedInto(pointedInputObject);
}
objectDraggingFrom = null;
}
isPressed = false;
}
}