public void Update(Input input)
{
if (input.WasPressed(Keys.Left))
{
cursor.position.X--;
if (!isCursorValid(cursor))
cursor.position.X++;
}
if (input.WasPressed(Keys.Right))
{
cursor.position.X++;
if (!isCursorValid(cursor))
cursor.position.X--;
}
if (input.WasPressed(Keys.Space))
{
Cursor rotated = cursor.Rotate();
if (isCursorValid(rotated))
cursor = rotated;
}
cursor.position.Y++;
if (!isCursorValid(cursor))
{
cursor.position.Y--;
for (int x = 0; x < cursor.Width; x++)
for (int y = 0; y < cursor.Height; y++)
if (cursor.blocks[x, y] != null)
blocks[cursor.position.X + x, cursor.position.Y + y] = cursor.blocks[x, y];
resetCursor();
if (!isCursorValid(cursor))
TetrisGame.isGameOver = true;
}
checkRows();
}
public PlayingGrid(int width, int height)
: base(width, height)
{
cursor = new Cursor();
resetCursor();
}
public Cursor Mirror()
{
Cursor result = new Cursor();
result.blocks = new Block[Width, Height];
result.position = position;
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height; y++)
result.blocks[x, y] = blocks[Width - x - 1, y];
return result;
}
bool isCursorValid(Cursor cursor)
{
Point pos = cursor.position;
if (pos.X < 0 || pos.X > Width - cursor.Width || pos.Y > Height - cursor.Height)
return false;
for (int x = 0; x < cursor.Width; x++)
for (int y = 0; y < cursor.Height; y++)
if (cursor.blocks[x, y] != null && blocks[pos.X + x, pos.Y + y] != null)
return false;
return true;
}
public Cursor Rotate()
{
Cursor result = new Cursor();
result.blocks = new Block[Height, Width];
result.position = position;
for (int x = 0; x < Height; x++)
for (int y = 0; y < Width; y++)
result.blocks[x, y] = blocks[y, x];
result = result.Mirror();
return result;
}