// returns true if we're continuing to fall, false if we've reached bottom or bumped into another piece
public bool CanStillFall(FallingBlocksPiece piece)
{
// move the piece down
piece.Translate(FallingBlocksPiece.Direction.Down);
// get all the rectangles for the pieces already in place
//List<Rectangle> allRectangles = new List<Rectangle>();
//foreach (FallingBlocksPiece tpiece in PieceList) // todo if rectangle is not visible, do not include (for efficiency reasons)
//{
// allRectangles.AddRange(tpiece.TransformedRectangles[tpiece.Orientation]);
// }
// get all the rectangles for the current piece
List <Rectangle> rectangleList = piece.TransformedRectangles[piece.Orientation].OfType <Rectangle>().ToList(); // convert array to list
// if there is a collision
//bool collision = IsCollision(allRectangles, piece.TransformedRectangles[piece.Orientation]);
bool collision = CheckForCollision(piece /*.TransformedRectangles[piece.Orientation]*/);
if (collision)
{
// move the piece back up
piece.Translate(FallingBlocksPiece.Direction.Up);
// check to see if the piece is at the very top and can't be moved
var y_queryPiece = from Point p in piece.TransformedPoints[piece.Orientation] select p.Y;
int ymax = y_queryPiece.Max();
if (ymax == (piece.MaxHeight[piece.Orientation] + FallingBlocksGame.XOffset))
{
this.updateTimer(false); // game over
return(true);
}
return(false);
}
// if we got this far, there is no collision with another piece, so highest y value for this piece (bottom most coord)
// to see if we are at bottom of screen
var y_query = from Point p in piece.TransformedPoints[piece.Orientation] select p.Y;
int ymax2 = y_query.Max();
if (ymax2 < FallingBlocksGame.YMax)
{
return(true);
}
else
{
return(false);
}
}
private void DropTheRow(int rowToDrop)
{
List <int> piecesToDrop = new List <int>(); // pieces on this row to drop
int ycoord = (rowToDrop * FallingBlocksGame.ColumnHeight) + XOffset;
// for every piece
for (int pNdx = 0; pNdx < PieceList.Count; pNdx++)
{
FallingBlocksPiece piece = PieceList[pNdx];
int orientation = piece.Orientation;
int num = piece.PieceNum;
// for each rectangle in this piece
for (int rndx = 0; rndx < piece.TransformedRectangles[orientation].Length; rndx++)
{
Rectangle rect = piece.TransformedRectangles[orientation][rndx];
// if this rectangle is on the drop row
if (rect.Y == ycoord)
{
if (!piecesToDrop.Contains(num))
{
piecesToDrop.Add(num);
}
}
}
}
for (int pNdx = 0; pNdx < PieceList.Count; pNdx++)
{
FallingBlocksPiece piece = PieceList[pNdx];
// this code lifted from FillOccupied, but note how currentRow is computed differently
int orientation = piece.Orientation;
var y_query = from Point p in piece.TransformedPoints[orientation] select p.Y;
int ymax = y_query.Max();
int currentRow = ((ymax - FallingBlocksGame.YOffset) / FallingBlocksGame.ColumnHeight) - 1;
currentRow = (ymax / FallingBlocksGame.ColumnHeight) - 1;
{
// if piece on or above rowToDrop
if ((piecesToDrop.Contains(piece.PieceNum)) || (currentRow < rowToDrop))
{
piece.Translate(FallingBlocksPiece.Direction.Down);
}
System.Threading.Thread.Sleep(DramaticPauseMS);
updatePaint();
}
}
}
// returns true if the character was processed by the control; otherwise, false.
protected override bool ProcessCmdKey(ref Message msg, Keys keyData) // http://stackoverflow.com/questions/4378865/detect-arrow-key-keydown-for-the-whole-window
{
if (keyData == Keys.Left)
{
currentPiece.Translate(FallingBlocksPiece.Direction.Left);
if (FallingBlocksGame.CheckForCollision(currentPiece))
{
currentPiece.Translate(FallingBlocksPiece.Direction.Right);
}
this.pbFallingBlocks.Invalidate();
return(true);
}
else if (keyData == Keys.Right)
{
currentPiece.Translate(FallingBlocksPiece.Direction.Right);
if (FallingBlocksGame.CheckForCollision(currentPiece))
{
currentPiece.Translate(FallingBlocksPiece.Direction.Left);
}
this.pbFallingBlocks.Invalidate();
return(true);
}
else if (keyData == Keys.Up)
{
currentPiece.Rotate(FallingBlocksPiece.Direction.Up);
this.pbFallingBlocks.Invalidate();
return(true);
}
else if (keyData == Keys.Down)
{
currentPiece.Rotate(FallingBlocksPiece.Direction.Down);
this.pbFallingBlocks.Invalidate();
return(true);
}
else if (keyData == Keys.Space)
{
if (currentPiece == null)
{
return(true);
}
timerPieceDrop.Enabled = false;
FallingBlocksGame.DropPiece(currentPiece);
DebugPieceLocation(currentPiece);
NextPiece();
timerPieceDrop.Enabled = true;
return(true);
}
else if (keyData == Keys.U) // moves piece up - not standard FallingBlocks, but useful during development
{
currentPiece.Translate(FallingBlocksPiece.Direction.UpDebug);
this.pbFallingBlocks.Invalidate();
return(true);
}
else if (keyData == Keys.Z) // "undo" movement of piece - not standard FallingBlocks, but useful during development
{
FallingBlocksGame.PieceList.RemoveAt(FallingBlocksGame.PieceList.Count - 1);
this.pbFallingBlocks.Invalidate();
return(true);
}
else if ((keyData == Keys.Escape) || (keyData == Keys.P))
{
if (btnPause.Text != "Start")
{
btnPause_Click(null, null);
}
return(true);
}
return(base.ProcessCmdKey(ref msg, keyData));
}