// slides each tile on the board in the passed direction
void Slide(SlideController.Direction dir)
{
timeSinceSlide = 0f;
if (!CanMove(dir))
{
return;
}
foreach (Transform cell in GetCells()) // for each cell on the board
{
GridPosition pos = cell.GetComponentInParent <GridPosition>(); // get its grid position
if (!pos.GetNext(dir)) // if this position is on the edge (has no next cell in the passed direction)
{
for (GridPosition nextMover = pos.GetOpposite(dir); nextMover != null; nextMover = nextMover.GetOpposite(dir)) // for each position, traveling in the opposite direction
{
DrugTile tileToMove = nextMover.gameObject.transform.GetComponentInChildren <DrugTile>();
if (tileToMove != null)
{
if (tileToMove.Slide(dir)) // returns true if tile matched
{
IncrementScore(1);
}
}
}
}
}
CreateCard(dir); // create a card at the opposite direction of the swipe
if (CheckGameOver())
{
Invoke("GameOver", 1);
}
}
// slides a tile in given SlideController.Direction
// returns true if the tile slides into a match, false otherwise
public bool Slide(SlideController.Direction dir)
{
GridPosition myPos = transform.parent.gameObject.GetComponent <GridPosition>();
GridPosition newPos = myPos.GetNext(dir);
if (newPos)
{
RectTransform newCell = newPos.GetComponent <RectTransform>();
if (newCell.childCount < 1) // if there isn't a tile in the next cell
{
ChangeParent(newCell);
}
else if (newCell.GetComponentInChildren <DrugTile>() && CheckMatch(newCell.GetComponentInChildren <DrugTile>())) // if there is a tile and they match
{
Instantiate(matchParticles, newCell.position - new Vector3(0, 0, 20), Quaternion.identity);
ChangeParent(newCell);
foreach (Transform child in newCell)
{
controller.tilesOnScreen.Remove(child.GetComponent <DrugTile>()); //remove this tile from the list of active tiles
child.GetComponent <DrugTile>().markedToDestroy = true;
}
StartCoroutine(Wait(newCell));
return(true);
}
}
return(false);
}
public GridPosition GetOpposite(SlideController.Direction dir)
{
switch (dir)
{
case SlideController.Direction.Up:
return(down);
case SlideController.Direction.Right:
return(left);
case SlideController.Direction.Left:
return(right);
case SlideController.Direction.Down:
return(up);
}
return(null); // should not occur
}
// returns true if the tile can slide in the given direction, false otherwise
public bool CanSlide(SlideController.Direction dir)
{
GridPosition myPos = transform.parent.gameObject.GetComponent <GridPosition>();
GridPosition newPos = myPos.GetNext(dir);
if (newPos)
{
RectTransform newCell = newPos.GetComponent <RectTransform>();
if (newCell.childCount < 1) // if there isn't a tile in the next cell
{
return(true);
}
else if (newCell.GetComponentInChildren <DrugTile>() && CheckMatch(newCell.GetComponentInChildren <DrugTile>())) // if there is a tile and they match
{
return(true);
}
}
return(false);
}
// returns true if a move in the given direction is valid, false otherwise
bool CanMove(SlideController.Direction dir)
{
foreach (Transform cell in GetCells()) // for each cell on the board
{
GridPosition pos = cell.GetComponentInParent <GridPosition>(); // get its grid position
if (pos && !pos.GetNext(dir)) // if this position is on the edge (has no next cell in the passed direction)
{
for (GridPosition nextMover = pos.GetOpposite(dir); nextMover != null; nextMover = nextMover.GetOpposite(dir)) // for each position, traveling in the opposite direction
{
DrugTile tileToMove = nextMover.gameObject.transform.GetComponentInChildren <DrugTile>();
if (tileToMove != null)
{
if (tileToMove.CanSlide(dir))
{
return(true);
}
}
}
}
}
return(false);
}
