public void Rotate()
{
// only rotate if currently valid
if (false == this.IsValid())
{
return;
}
// First, retrieve maximum non-redundant orientation values
int totalOrientations = 0;
totalOrientations = STPiece.GetMaximumOrientationsOfShape(this.mShape);
if (0 == totalOrientations)
{
return;
}
// Add one to current orientation value
int newOrientation = (this.mOrientation + 1);
// Force newOrientation to range 1..totalOrientations
newOrientation =
1 + ((((newOrientation - 1) % totalOrientations)
+ totalOrientations) % totalOrientations);
this.mOrientation = newOrientation;
}
public static bool GetCellOffsetXYOccupiedForShape
(
STPieceShape shape, // O,I,S,Z,L,J,T; None
int orientation, // 1,2,3,4; 0 == none
int x,
int y
)
{
if (STPieceShape.None == shape)
{
return(false);
}
// force orientation to range 1..totalOrientations
int totalOrientations = 0;
totalOrientations = STPiece.GetMaximumOrientationsOfShape(shape);
if (0 == totalOrientations)
{
return(false);
}
orientation =
1 + ((((orientation - 1) % totalOrientations)
+ totalOrientations) % totalOrientations);
// Loop through all cells and test against supplied cell.
int totalCells = 0;
totalCells = STPiece.GetTotalCellsForShape(shape);
int cellIndex = 0;
for (cellIndex = 1; cellIndex <= totalCells; cellIndex++)
{
int cellX = 0;
int cellY = 0;
STPiece.GetCellOffsetXYForShape(shape, orientation, cellIndex, ref cellX, ref cellY);
if ((x == cellX) && (y == cellY))
{
return(true);
}
}
return(false);
}
public void SetOrientation(int orientation)
{
int totalOrientations = 0;
totalOrientations = STPiece.GetMaximumOrientationsOfShape(this.mShape);
if (0 == totalOrientations)
{
this.mOrientation = 0;
return;
}
orientation =
1 + ((((orientation - 1) % totalOrientations)
+ totalOrientations) % totalOrientations);
this.mOrientation = orientation;
}
public int GetOrientation()
{
int totalOrientations = 0;
totalOrientations = STPiece.GetMaximumOrientationsOfShape(this.mShape);
if (0 == totalOrientations)
{
this.mOrientation = 0;
return(0);
}
this.mOrientation =
1 + ((((this.mOrientation - 1) % totalOrientations)
+ totalOrientations) % totalOrientations);
return(this.mOrientation);
}
public static void GetCellOffsetXYForShape
(
STPieceShape shape, // O,I,S,Z,L,J,T; None
int orientation, // 1,2,3,4; 0 == none
int cellIndex, // 1,2,3,4; 0 == none
ref int x,
ref int y
)
{
x = 0;
y = 0;
// force cellIndex to range 1..4
cellIndex = 1 + (((cellIndex - 1) % 4 + 4) % 4);
// force orientation to range 1..totalOrientations
int totalOrientations = 0;
totalOrientations = STPiece.GetMaximumOrientationsOfShape(shape);
if (0 == totalOrientations)
{
return;
}
orientation =
1 + ((((orientation - 1) % totalOrientations)
+ totalOrientations) % totalOrientations);
if (STPieceShape.None == shape)
{
return;
}
if (STPieceShape.O == shape)
{
// orientation 1,2,3,4 : (-1, -1), ( 0, -1), ( 0, 0), (-1, 0)
if (1 == cellIndex)
{
x = -1; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = -1;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = -1; y = 0;
}
}
if (STPieceShape.I == shape)
{
// orientation 1,3: (-2, 0), (-1, 0), ( 0, 0), ( 1, 0)
// orientation 2,4: ( 0, -2), ( 0, -1), ( 0, 0), ( 0, 1)
if ((1 == orientation) || (3 == orientation))
{
if (1 == cellIndex)
{
x = -2; y = 0;
}
else if (2 == cellIndex)
{
x = -1; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 0;
}
}
else
{
if (1 == cellIndex)
{
x = 0; y = -2;
}
else if (2 == cellIndex)
{
x = 0; y = -1;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
}
if (STPieceShape.S == shape)
{
// orientation 1,3: (-1, -1), ( 0, -1), ( 0, 0), ( 1, 0)
// orientation 2,4: ( 1, -1), ( 0, 0), ( 1, 0), ( 0, 1)
if ((1 == orientation) || (3 == orientation))
{
if (1 == cellIndex)
{
x = -1; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = -1;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 0;
}
}
else
{
if (1 == cellIndex)
{
x = 1; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
}
if (STPieceShape.Z == shape)
{
// orientation 1,3: ( 0, -1), ( 1, -1), (-1, 0), ( 0, 0)
// orientation 2,4: ( 0, -1), ( 0, 0), ( 1, 0), ( 1, 1)
if ((1 == orientation) || (3 == orientation))
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 1; y = -1;
}
else if (3 == cellIndex)
{
x = -1; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 0;
}
}
else
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 1;
}
}
}
if (STPieceShape.L == shape)
{
// orientation 1: (-1, -1), (-1, 0), ( 0, 0), ( 1, 0)
// orientation 2: ( 0, -1), ( 1, -1), ( 0, 0), ( 0, 1)
// orientation 3: (-1, 0), ( 0, 0), ( 1, 0), ( 1, 1)
// orientation 4: ( 0, -1), ( 0, 0), (-1, 1), ( 0, 1)
if (1 == orientation)
{
if (1 == cellIndex)
{
x = -1; y = -1;
}
else if (2 == cellIndex)
{
x = -1; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 0;
}
}
else if (2 == orientation)
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 1; y = -1;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
else if (3 == orientation)
{
if (1 == cellIndex)
{
x = -1; y = 0;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 1;
}
}
else
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = -1; y = 1;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
}
if (STPieceShape.J == shape)
{
// orientation 1: ( 1, -1), (-1, 0), ( 0, 0), ( 1, 0)
// orientation 2: ( 0, -1), ( 0, 0), ( 0, 1), ( 1, 1)
// orientation 3: (-1, 0), ( 0, 0), ( 1, 0), (-1, 1)
// orientation 4: (-1, -1), ( 0, -1), ( 0, 0), ( 0, 1)
if (1 == orientation)
{
if (1 == cellIndex)
{
x = 1; y = -1;
}
else if (2 == cellIndex)
{
x = -1; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 0;
}
}
else if (2 == orientation)
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 1;
}
else if (4 == cellIndex)
{
x = 1; y = 1;
}
}
else if (3 == orientation)
{
if (1 == cellIndex)
{
x = -1; y = 0;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = -1; y = 1;
}
}
else
{
if (1 == cellIndex)
{
x = -1; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = -1;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
}
if (STPieceShape.T == shape)
{
// orientation 1: ( 0, -1), (-1, 0), ( 0, 0), ( 1, 0)
// orientation 2: ( 0, -1), ( 0, 0), ( 1, 0), ( 0, 1)
// orientation 3: (-1, 0), ( 0, 0), ( 1, 0), ( 0, 1)
// orientation 4: ( 0, -1), (-1, 0), ( 0, 0), ( 0, 1)
if (1 == orientation)
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = -1; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 1; y = 0;
}
}
else if (2 == orientation)
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
else if (3 == orientation)
{
if (1 == cellIndex)
{
x = -1; y = 0;
}
else if (2 == cellIndex)
{
x = 0; y = 0;
}
else if (3 == cellIndex)
{
x = 1; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
else
{
if (1 == cellIndex)
{
x = 0; y = -1;
}
else if (2 == cellIndex)
{
x = -1; y = 0;
}
else if (3 == cellIndex)
{
x = 0; y = 0;
}
else if (4 == cellIndex)
{
x = 0; y = 1;
}
}
}
}