private GemBehaviour FillIndexWithGem(bool isRefill, GridIndex index)
{
GemBehaviour gem;
var yOffest = isRefill ? index.GridY + REFILL_Y_OFFSET : 0;
var attempts = 0;
do
{
if (attempts > 0)
{
ClearGemAt(index);
if (attempts == MAX_FILL_ATTEMPTS)
{
throw new Exception("Max attempts to fill the board reached");
}
}
gem = FillRandomGemAt(index, yOffest);
attempts++;
} while (HasMatchOnFill(index));
return(gem);
}
public static bool IsInBounds(GridIndex index, int columns, int rows)
{
return(index.GridX >= 0 &&
index.GridX < columns &&
index.GridY >= 0 &&
index.GridY < rows);
}
private GemBehaviour PlaceGem(GemBehaviour gem, GridIndex index)
{
gem.gameObject
.ResetTransformation()
.SetPosition(index.GridX, index.GridY);
SetGemPosition(gem, index);
return(gem);
}
private GemBehaviour FillRandomGemAt(GridIndex index, int yOffset = 0)
{
return
(PlaceGem(
gem: board.InsantiateGem()
.GetComponent <GemBehaviour>()
.Init(board),
index: index)
.ApplyOffsetY(yOffset, gemFallSpeed));
}
private GemBehaviour MakeGemFall(GemBehaviour gem, int xIndex, int initY, int newY)
{
var index = new GridIndex(xIndex, newY);
gem.Move(index, gemFallSpeed * (initY - newY));
SetGemPosition(gem, index);
allGems[xIndex, initY] = null;
return(gem);
}
private void ClearGemAt(GridIndex index)
{
var gem = GetGem(index);
if (gem != null)
{
allGems[index.GridX, index.GridY] = null;
gem.OnMoveComplete -= HandleGemMoveComplete;
BoardBehaviour.DestroyGem(gem);
}
}
public IEnumerable <GemBehaviour> FindMatchesAt(GridIndex index)
{
var hMatches = matchingHelper.FindHorizontalMatches(index);
var vMatches = matchingHelper.FindVerticalMatches(index);
hMatches = hMatches.Count >= 3 ? hMatches : new List <GemBehaviour>();
vMatches = vMatches.Count >= 3 ? vMatches : new List <GemBehaviour>();
return(hMatches.Any() || vMatches.Any()
? hMatches.Union(vMatches)
: Enumerable.Empty <GemBehaviour>());
}
public void FillBoard(bool isRefill = false)
{
for (var i = 0; i < columns; i++)
{
for (var j = 0; j < rows; j++)
{
var index = new GridIndex(i, j);
if (GetGem(index) != null)
{
continue;
}
var gem = FillIndexWithGem(isRefill, index);
gem.OnMoveComplete += HandleGemMoveComplete;
}
}
}
public static bool IsDirecNeighbor(GridIndex indexA, GridIndex indexB)
{
return(Mathf.Abs(indexA.GridX - indexB.GridX) == 1 && indexA.GridY == indexB.GridY ||
Mathf.Abs(indexA.GridY - indexB.GridY) == 1 && indexA.GridX == indexB.GridX);
}
private bool HasMatchOnFill(GridIndex index)
{
return(matchingHelper.FindMatches(index, Vector2.left).Count() >= 3 ||
matchingHelper.FindMatches(index, Vector2.down).Count() >= 3);
}
private void SetGemPosition(GemBehaviour gem, GridIndex index)
{
allGems[index.GridX, index.GridY] = gem;
gem.SetCord(index);
}
public GemBehaviour GetGem(GridIndex index)
{
return(BoardUtils.IsInBounds(index, columns, rows)
? allGems[index.GridX, index.GridY]
: null);
}
private void HandleGemMoveComplete(GemBehaviour gem, GridIndex newIndex)
{
PlaceGem(gem, newIndex);
}