// After a piece is translated or rotated, call this method to find out if the
// piece is now on top of another or on top of the floor and therefore should
// be freezed.
public bool MaybeFreezePiece(GameObject piece)
{
bool freeze = false;
foreach (Transform cube in piece.transform)
{
int plane = TetrisHelpers.GetPieceCubePlane(cube);
int row = TetrisHelpers.GetPieceCubeRow(cube);
int col = TetrisHelpers.GetPieceCubeColumn(cube);
// Touching the floor.
if (plane == 0)
{
freeze = true;
break;
}
// Cube is on top of a cube from a previously frozen piece.
if (grid[plane - 1, row, col] != null)
{
freeze = true;
break;
}
}
if (freeze)
{
FreezePiece(piece);
}
return(freeze);
}
private string GridIndexString(Transform cube)
{
int plane = TetrisHelpers.GetPieceCubePlane(cube);
int row = TetrisHelpers.GetPieceCubeRow(cube);
int col = TetrisHelpers.GetPieceCubeColumn(cube);
return("[" + plane + ", " + row + ", " + col + "]");
}
private void FreezePiece(GameObject piece)
{
foreach (Transform cube in piece.transform)
{
int plane = TetrisHelpers.GetPieceCubePlane(cube);
int row = TetrisHelpers.GetPieceCubeRow(cube);
int col = TetrisHelpers.GetPieceCubeColumn(cube);
FreezeCube(cube, plane, row, col);
}
piece.transform.DetachChildren();
Destroy(piece);
ProcessFullPlanes();
}
// Check if we can move a piece along the Z axis by a certain amount.
// If any of the cubes goes off the grid, we can not move the piece.
private bool CanMovePieceAxisZ(int amount)
{
bool canMove = true;
foreach (Transform cube in transform)
{
int plane = TetrisHelpers.GetPieceCubePlane(cube);
int row = TetrisHelpers.GetPieceCubeRow(cube);
int col = TetrisHelpers.GetPieceCubeColumn(cube);
int nextCol = col + amount;
if (nextCol < 0)
{
canMove = false;
break;
}
if (nextCol >= GameSettings.columnsPerPlane)
{
canMove = false;
break;
}
if (GridManager.gm.GridCellOccupied(plane, row, nextCol))
{
canMove = false;
break;
}
}
if (canMove)
{
AudioSource.PlayClipAtPoint(moveSFX, transform.position);
}
else
{
AudioSource.PlayClipAtPoint(canNotMoveSFX, transform.position);
}
return(canMove);
}
private bool InvalidPosition(bool ignoreYPosition = false)
{
foreach (Transform cube in transform)
{
int plane = TetrisHelpers.GetPieceCubePlane(cube);
int row = TetrisHelpers.GetPieceCubeRow(cube);
int col = TetrisHelpers.GetPieceCubeColumn(cube);
// One cube of the piece is going outside the game grid...
if (row < 0 || row >= GameSettings.rowsPerPlane ||
col < 0 || col >= GameSettings.columnsPerPlane)
{
return(true);
}
if (!ignoreYPosition)
{
if (plane < 0 || plane >= GameSettings.numberOfPlanes)
{
return(true);
}
}
if (ignoreYPosition && plane >= GameSettings.numberOfPlanes)
{
continue;
}
// One cube of the piece is in a grid position that alreay has a cube
// from a previous piece...
if (GridManager.gm.GridCellOccupied(plane, row, col))
{
return(true);
}
}
return(false);
}
