// Update is called once per frame
void Update()
{
UpdateState();
if (_holdingSlot != null)
{
_tileDelta = _mouseHoldStartPos - Camera.main.ScreenToWorldPoint(Input.mousePosition);
_dragDirection = Vector2.zero;
if (_tileDelta.x < -0.5f)
{
_dragDirection.x = -1;
}
if (_tileDelta.x > 0.5f)
{
_dragDirection.x = 1;
}
if (_tileDelta.y < -0.5f)
{
_dragDirection.y = -1;
}
if (_tileDelta.y > 0.5f)
{
_dragDirection.y = 1;
}
if (_prevDragDirection != _dragDirection)
{
if (_dragDirection.x == 0 || _dragDirection.y == 0)
{
Vector2 targetPos = new Vector2(_holdingSlot.gridLocation.x - _dragDirection.x, _holdingSlot.gridLocation.y - _dragDirection.y);
if (targetPos.x >= 0 && targetPos.x < _gridSize.x && targetPos.y >= 0 && targetPos.y < _gridSize.y)
{
_targetPosition = targetPos;
_holdingSlot.Animate(targetPos);
if (_potentialSlot != null)
{
_potentialSlot.Animate(_potentialSlot.gridLocation);
}
_potentialSlot = _grid[(int)targetPos.x, (int)targetPos.y];
_potentialSlot.Animate(_holdingSlot.gridLocation);
}
}
if (_dragDirection == Vector2.zero)
{
Vector2 targetPos = new Vector2(_holdingSlot.gridLocation.x - _prevDragDirection.x, _holdingSlot.gridLocation.y - _prevDragDirection.y);
if (targetPos.x >= 0 && targetPos.x < _gridSize.x && targetPos.y >= 0 && targetPos.y < _gridSize.y)
{
_targetPosition = Vector2.zero;
_holdingSlot.Animate(_holdingSlot.gridLocation);
_potentialSlot = _grid[(int)targetPos.x, (int)targetPos.y];
_potentialSlot.Animate(_grid[(int)targetPos.x, (int)targetPos.y].gridLocation);
_potentialSlot = null;
}
}
}
_prevDragDirection = _dragDirection;
}
}