private IEnumerator SwapPickups()
{
//We only need to swap to/from the slots that actually have something equipped
bool sourceFinished = !dragSlot.IsEquipped();
bool targetFinished = !currentDropTarget.IsEquipped();
//Lerp the pickup icons between the swapped slot locations
while (!sourceFinished || !targetFinished)
{
if (!sourceFinished)
{
dragSlot.GetTransform().position = Vector3.MoveTowards(dragSlot.GetTransform().position, currentDropTarget.GetHomeCoords(), Time.deltaTime * swapSpeed);
sourceFinished = dragSlot.GetTransform().position.Equals(currentDropTarget.GetHomeCoords());
}
if (!targetFinished)
{
currentDropTarget.GetTransform().position = Vector3.MoveTowards(currentDropTarget.GetTransform().position, dragSlot.GetHomeCoords(), Time.deltaTime * swapSpeed);
targetFinished = currentDropTarget.GetTransform().position.Equals(dragSlot.GetHomeCoords());
}
yield return(0);
}
//Remove the highlights that were established as part of the drag
dragSlot.RemovePickupHighlight();
currentDropTarget.RemoveSlotHighlight();
//Complete the actual swap of the pickups
dragSlot.SwapPickup(currentDropTarget);
//The slots that have pickups equipped may have changed so recalculate which ones need to be visible
ResetVisibilityOnAllSlots();
//End this drag
dragSlot = null;
currentDropTarget = null;
}
public void Drag(Vector2 fingerPosition)
{
if (!IsDragging())
{
Debug.Log("Received drag request with no corresponding start drag request so it will be ignored");
}
else
{
//Move the icon to follow the players finger movements
Vector2 fingerDelta = fingerPosition - lastFrameFingerPosition;
dragTargetPosition = dragTargetPosition + new Vector3(fingerDelta.x, fingerDelta.y);
dragSlot.GetTransform().position = Vector3.Lerp(dragSlot.GetTransform().position, dragTargetPosition, Time.deltaTime * dragSpeed);
lastFrameFingerPosition = fingerPosition;
UpdateCurrentDropTarget();
}
}
public void StartDragging(PickupSlot dragSlot, int reflectXAxis, Vector2 fingerPosition)
{
if (IsDragging())
{
Debug.Log("Received request to start a drag but we are already dragging something else so it will be ignored");
}
else
{
this.dragSlot = dragSlot;
//Note that reflect x axis is used here so that we can snap either to the left or right of the origin depending on what side of the screen the origin is
this.dragCentre = dragSlot.GetTransform().position + new Vector3((dragSnapDistance + currentSlotBias) * reflectXAxis, dragSnapDistance + currentSlotBias);
this.lastFrameFingerPosition = fingerPosition;
//Snap the icon to the specified bias from the dragCentre
Vector3 biasToOrigin = new Vector3(-currentSlotBias * reflectXAxis, -currentSlotBias);
dragSlot.GetTransform().position = dragCentre + biasToOrigin;
dragTargetPosition = dragSlot.GetTransform().position;
UpdateCurrentDropTarget();
//Make all slots visible during a drag so we can see the highlighted slot where the player is dragging towards
ShowAllSlots();
}
}