public void ClearColorType(SweetsColorType.ColorType color)
{
for (int x = 0; x < columns; x++)
{
for (int y = 0; y < rows; y++)
{
if (sweets[x, y].ColorAble() &&
(sweets[x, y].ColoredComponent.ThisType == color ||
color == SweetsColorType.ColorType.UNIVERSAL))
{
EliminateSweet(x, y);
}
}
}
}
public List <SweetsController> MatchSweets(SweetsController sweet, int newX, int newY)
{
if (sweet.ColorAble())
{
SweetsColorType.ColorType color = sweet.ColoredComponent.ThisType;
List <SweetsController> matchSweetsInSameRow = new List <SweetsController>();
List <SweetsController> matchSweetsInSameCol = new List <SweetsController>();
List <SweetsController> matchingResult = new List <SweetsController>();
//row maching
matchSweetsInSameRow.Add(sweet);
//match the current row.(0->left, 1->right)
for (int i = 0; i <= 1; i++)
{
for (int xDis = 1; xDis < columns; xDis++)
{
int x = newX;
if (i == 0) //traverse the left side.
{
x -= xDis;
}
if (i == 1) //traverse the right side.
{
x += xDis;
}
if (x < 0 || x >= columns) //encounter the border.
{
break;
}
if (sweets[x, newY].ColorAble() && sweets[x, newY].ColoredComponent.ThisType == color)
{
matchSweetsInSameRow.Add(sweets[x, newY]);
}
else
{
break;
}
}
}
//"L","T" shape matching.
if (matchSweetsInSameRow.Count >= 3)
{
for (int i = 0; i < matchSweetsInSameRow.Count; i++)
{
matchingResult.Add(matchSweetsInSameRow[i]);
}
for (int j = 0; j <= 1; j++) //只需扫描被调换元素的列而无需所有行匹配成功元素？
{
//apply col-matching to the first element.
for (int yDis = 1; yDis <= rows; yDis++)
{
int y = newY;
if (j == 0)
{
y -= yDis;
}
if (j == 1)
{
y += yDis;
}
if (y < 0 || y >= rows)
{
break;
}
if (sweets[matchSweetsInSameRow[0].X, y].ColorAble() && sweets[matchSweetsInSameRow[0].X, y].ColoredComponent.ThisType == color)
{
matchSweetsInSameCol.Add(sweets[matchSweetsInSameRow[0].X, y]);
}
else
{
break;
}
}
}
if (matchSweetsInSameCol.Count < 2)
{
matchSweetsInSameCol.Clear();
}
else
{
for (int k = 0; k < matchSweetsInSameCol.Count; k++)
{
matchingResult.Add(matchSweetsInSameCol[k]);
}
}
}
if (matchingResult.Count >= 3)
{
//If successed in matching sweets in one row, then return.
return(matchingResult);
}
else
{
matchSweetsInSameRow.Clear();
matchSweetsInSameCol.Clear();
}
//columns matching
matchSweetsInSameCol.Add(sweet); //basic element
//match the current row to the left and to the right.
for (int i = 0; i <= 1; i++)
{
for (int yDis = 1; yDis < rows; yDis++)
{
int y = newY;
if (i == 0) //traverse the up side.
{
y -= yDis;
}
if (i == 1) //traverse the down side.
{
y += yDis;
}
if (y < 0 || y >= rows) //encounter the border.
{
break;
}
if (sweets[newX, y].ColorAble() && sweets[newX, y].ColoredComponent.ThisType == color)
{
matchSweetsInSameCol.Add(sweets[newX, y]);
}
else
{
break;
}
}
}
if (matchSweetsInSameCol.Count >= 3)
{
for (int i = 0; i < matchSweetsInSameCol.Count; i++)
{
matchingResult.Add(matchSweetsInSameCol[i]);
}
for (int j = 0; j <= 1; j++)
{
for (int xDis = 1; xDis < columns; xDis++)
{
int x = newX;
if (j == 0)
{
x -= xDis;
}
if (j == 1)
{
x += xDis;
}
if (x < 0 || x >= columns)
{
break;
}
if (sweets[x, matchSweetsInSameCol[0].Y].ColorAble() && sweets[x, matchSweetsInSameCol[0].Y].ColoredComponent.ThisType == color)
{
matchSweetsInSameRow.Add(sweets[x, matchSweetsInSameCol[0].Y]);
}
else
{
break;
}
}
}
if (matchSweetsInSameRow.Count < 2)
{
matchSweetsInSameRow.Clear();
}
else
{
for (int k = 0; k < matchSweetsInSameRow.Count; k++)
{
matchingResult.Add(matchSweetsInSameRow[k]);
}
}
}
if (matchingResult.Count >= 3)
{
//If successed in matching sweets in one column.
return(matchingResult);
}
}
return(null);
}
