// PUBLIC MODIFIERS
new public void Start()
{
base.Start();
// hide snap objects
ShowSnapLocations(false);
// snap to the initial location if one is set
if (current_snap_loc != null)
{
target_pos = current_snap_loc.transform.position;
current_snap_loc.SetOccupied(true);
}
// find/set whether dropable
if (snap_locations.Count > 0)
{
dropable = true;
}
}
/// <summary>
/// Causes the object to position itself at the closest snap location
/// Returns whether the item was actually dropped (could be not dropable)
///
/// requires: - if dropable, snap_locations is not empty
/// - snap_locations contains non null elements
/// </summary>
public virtual bool Drop()
{
if (!dropable)
{
return(false);
}
// find the closest snap location
float min_dist = float.MaxValue;
SnapLocation closest_snap_loc = current_snap_loc;
foreach (SnapLocation loc in snap_locations)
{
if (loc.IsOccupied())
{
continue; // not an option
}
float dist = Vector2.Distance(transform.position, loc.transform.position);
if (dist < min_dist)
{
min_dist = dist;
closest_snap_loc = loc;
}
}
// return if no available snap locations
if (closest_snap_loc == null || closest_snap_loc.IsOccupied())
{
return(false);
}
// snap to the chosen snap location
target_pos = closest_snap_loc.transform.position;
current_snap_loc = closest_snap_loc;
current_snap_loc.SetOccupied(true);
OnSnapLocationChosen(closest_snap_loc);
// hide snap objects
ShowSnapLocations(false);
// update state
grabbed = false;
dropping = true;
// update graphics
ChangeGraphicsByState();
// stop drawing on top of other items
current_graphics_obj.GetComponent <SpriteRenderer>().sortingLayerName = NormalSortingLayer;
return(true);
}