/// <summary>
/// Method <c> RestartGame</c> Restarts the game, setting all state to default,
/// and clears all items that would be bound to the gui.
/// </summary>
public void RestartGame()
{
// reset game variables
_timeInterval = 500;
_gameOver = false;
_paused = false;
PauseMessage = "";
Score = 0;
Level = 1;
// clear collections
Blocks.Clear();
NextBlock.Clear();
HeldBlock.Clear();
GameBoard.ClearGrid();
_timer.Interval = new TimeSpan(0, 0, 0, 0, _timeInterval);
// create shapes
_shape = _shapeFactory.BuildRandomShape();
_nextShape = _shapeFactory.BuildRandomShape();
NextBlock.AddRange(_nextShape.ShapeBlocks);
Blocks.AddRange(_shape.ShapeBlocks);
_timer.Start();
}
/// <summary>
/// Method <c>HoldBlock()</c>
/// sets the heldBlock to the current block, and then sets the current block to
/// the next block.
/// </summary>
public void HoldBlock()
{
if (HeldBlock.Count == 0)
{
_heldShape = _shapeFactory.BuildShape(_shape);
for (int i = 0; i < 4; i++)
{
Blocks.Remove(x => x.GridX == _shape.ShapeBlocks[i].GridX &&
x.GridY == _shape.ShapeBlocks[i].GridY);
}
_shape = _nextShape;
_shape.CenterShape();
Blocks.AddRange(_shape.ShapeBlocks);
_nextShape = _shapeFactory.BuildRandomShape();
NextBlock.Clear();
NextBlock.AddRange(_nextShape.ShapeBlocks);
HeldBlock.AddRange(_heldShape.ShapeBlocks);
}
else
{
HeldBlock.Clear();
var tempShape = _heldShape;
_heldShape = _shapeFactory.BuildShape(_shape);
for (int i = 0; i < 4; i++)
{
Blocks.Remove(x => x.GridX == _shape.ShapeBlocks[i].GridX &&
x.GridY == _shape.ShapeBlocks[i].GridY);
}
_shape = tempShape;
_shape.CenterShape();
Blocks.AddRange(_shape.ShapeBlocks);
HeldBlock.AddRange(_heldShape.ShapeBlocks);
}
}
