/*
* Used by the circular implementation to dequeue a car (where the head tile moves and the cars does not need
* to be copied)
*/
private IEnumerator CircularDequeue(Action <bool> callback)
{
NumElements--;
yield return(StartCoroutine(Destroy(ConvertTileToPosition(ActiveCarpark[_head]), status =>
{
if (status)
{
if (NumElements == 0)
{
_head = 0;
HeadTile.SetActive(false);
}
else
{
_head = ++_head % ActiveCarpark.Count;
HeadTile.GetComponent <IsoTransform>().Position = ActiveCarpark[_head].Position;
}
callback(true);
}
else
{
Debug.Log("Failed to dequeue vehicle");
callback(false);
}
})));
}
/*
* This method pops the head element from the stack DS and shifts head element to the next (if it exist)
*/
public void Pop(Action <bool> callback)
{
if (NumElements != 0)
{
NumElements--;
StartCoroutine(Destroy(ConvertTileToPosition(ActiveCarpark[NumElements]), status =>
{
if (status)
{
if (NumElements == 0)
{
HeadTile.SetActive(false);
}
else
{
HeadTile.GetComponent <IsoTransform>().Position = ActiveCarpark[NumElements - 1].Position;
}
callback(true);
}
else
{
Debug.Log("Failed to pop vehicle");
callback(false);
}
}));
}
else
{
Debug.Log("Stack is empty");
callback(true);
}
}
/*
* This method adds a new car into the carpark, shifts the headtile (mimic operation of a stack).
*/
public void Push(GameObject vehicle, Action <bool> callback)
{
StartCoroutine(WriteToIndex(vehicle, ConvertTileToPosition(ActiveCarpark[NumElements]), callback));
HeadTile.GetComponent <IsoTransform>().Position = ActiveCarpark[NumElements].Position;
HeadTile.SetActive(true);
NumElements++;
}
/*
* This method adds a new car into the carpark, mimic operation of a queue.
*/
public void Enqueue(GameObject vehicle, Action <bool> callback)
{
HeadTile.GetComponent <IsoTransform>().Position = ActiveCarpark[_head].Position;
HeadTile.SetActive(true);
StartCoroutine(WriteToIndex(vehicle,
ConvertTileToPosition(ActiveCarpark[(NumElements + _head) % ActiveCarpark.Count]), callback));
NumElements++;
}