private void RemoveBlocks()
{
List <List <Tile> > blocks = FindBlocks();
foreach (List <Tile> block in blocks)
{
foreach (Tile tile in block)
{
if (FadingTiles.Count > 0)
{
FadingTiles.Remove(tile);
}
TileArray[tile.Col, tile.Row].Figure = null;
}
}
((GameplayScreen)ScreenManager.Instance.CurrentScreen).CurrentTime += 1;
if (((GameplayScreen)ScreenManager.Instance.CurrentScreen).CurrentTime > ((GameplayScreen)ScreenManager.Instance.CurrentScreen).TimeLimit)
{
((GameplayScreen)ScreenManager.Instance.CurrentScreen).CurrentTime = ((GameplayScreen)ScreenManager.Instance.CurrentScreen).TimeLimit;
}
((GameplayScreen)ScreenManager.Instance.CurrentScreen).Score.Text = "SCORE: " + (10 * score).ToString();
AdditionalState = FieldStates.TilesStoppedMoving;
for (int i = Settings.ColsCount - 1; i >= 0; --i)
{
for (int j = Settings.RowsCount - 1; j >= 0; --j)
{
if (TileArray[i, j].Figure == null)
{
Tile firstAbove = FindFirstAbove(i, j);
if (firstAbove != null)
{
AdditionalState = FieldStates.TilesMoving;
TileArray[firstAbove.Col, firstAbove.Row].Figure = null;
firstAbove.InitiateMovement(TileArray[i, j].Position, 4);
firstAbove.Background.Position = TileArray[i, j].Background.Position;
firstAbove.Col = i;
firstAbove.Row = j;
TileArray[i, j] = firstAbove;
}
}
}
}
}
public void Update(GameTime gameTime)
{
// Attention: a handful of brain cells has been sacrificed to Satan
// In order to make fancy swapping animation work properly;
// It's time to kick switches and chew bubblegum... and I'm all outta gum
switch (MainState)
{
case FieldStates.RemovingTiles:
switch (AdditionalState)
{
case FieldStates.TilesFading:
if (FadingTiles.Last().Figure.Alpha != 0.0f)
{
foreach (Tile tile in FadingTiles)
{
RemoveEffect.Apply(tile.Figure);
}
}
else
{
AdditionalState = FieldStates.RemovingTiles;
}
break;
case FieldStates.RemovingTiles:
RemoveBlocks();
break;
case FieldStates.TilesStoppedMoving:
FillTiles();
if (FindBlocks().Count > 0)
{
BlocksFadeout();
AdditionalState = FieldStates.TilesFading;
}
else if (MovesAvailable())
{
MainState = AdditionalState = FieldStates.Idle;
}
else
{
((GameplayScreen)ScreenManager.Instance.CurrentScreen).IsGameFinished = true;
}
break;
}
break;
case FieldStates.Swapping:
switch (AdditionalState)
{
case FieldStates.SwappingBack:
MainState = AdditionalState = FieldStates.Idle;
CurrentSelectedTile = PreviousSelectedTile = null;
break;
case FieldStates.TilesStoppedMoving:
if (FindBlocks().Count == 0)
{
CurrentSelectedTile.InitiateMovement(PreviousSelectedTile.Position);
PreviousSelectedTile.InitiateMovement(CurrentSelectedTile.Position);
SwapTiles(ref CurrentSelectedTile, ref PreviousSelectedTile);
AdditionalState = FieldStates.SwappingBack;
}
else
{
BlocksFadeout();
MainState = FieldStates.RemovingTiles;
CurrentSelectedTile = PreviousSelectedTile = null;
}
break;
}
break;
case FieldStates.Idle:
if (PreviousSelectedTile != null)
{
ClickEffect.Restore(PreviousSelectedTile.Figure);
if (IsAdjacent(CurrentSelectedTile, PreviousSelectedTile))
{
CurrentSelectedTile.InitiateMovement(PreviousSelectedTile.Position);
PreviousSelectedTile.InitiateMovement(CurrentSelectedTile.Position);
SwapTiles(ref CurrentSelectedTile, ref PreviousSelectedTile);
MainState = FieldStates.Swapping;
AdditionalState = FieldStates.TilesMoving;
break;
}
else
{
if (CurrentSelectedTile == PreviousSelectedTile)
{
CurrentSelectedTile = null;
}
PreviousSelectedTile = null;
}
}
if (CurrentSelectedTile != null)
{
ClickEffect.Apply(CurrentSelectedTile.Figure);
}
break;
}
// So many field states, so little time :)
foreach (Tile tile in TileArray)
{
tile.Update(gameTime);
}
}