private void GameLoop()
{
Field field = new Field();
Tetromino tetromino = new Tetromino();
field.UpdateField(tetromino);
//tetromino.UpdatePositionInField(field);
bool forceDown = true;
var speedCount = 0;
int speed = 20;
int pieceCount = 0;
List <int> lines = new List <int>();
while (!_isGameOver)
{
Thread.Sleep(50);
speedCount++;
forceDown = (speedCount == speed);
bool[] keys = new bool[4];
for (int i = 0; i < 4; i++) // R L D Z
{
keys[i] = (0x8000 & GetAsyncKeyState((char)("\x27\x25\x28Z"[i]))) != 0;
}
tetromino.X += (keys[0] && tetromino.WillFitAtDestination(tetromino.X + _speed, tetromino.Y, tetromino.Rotation, field)) ? _speed : 0;
tetromino.X -= (keys[1] && tetromino.WillFitAtDestination(tetromino.X - _speed, tetromino.Y, tetromino.Rotation, field)) ? _speed : 0;
tetromino.Y += (keys[2] && tetromino.WillFitAtDestination(tetromino.X, tetromino.Y + _speed, tetromino.Rotation, field)) ? _speed : 0;
if (keys[3])
{
tetromino.Rotation += (_rotateHold && tetromino.WillFitAtDestination(tetromino.X, tetromino.Y, tetromino.Rotation + 1, field)) ? 1 : 0;
_rotateHold = false;
}
else
{
_rotateHold = true;
}
if (forceDown)
{
// Update difficulty every 50 pieces
speedCount = 0;
pieceCount++;
if (pieceCount % 50 == 0)
{
if (speed >= 10)
{
speed--;
}
}
if (tetromino.WillFitAtDestination(tetromino.X, tetromino.Y + 1, tetromino.Rotation, field))
{
tetromino.Y++;
}
else
{
// It can't! Lock the piece in place
for (int coordinateX = 0; coordinateX < 4; coordinateX++)
{
for (int coordinateY = 0; coordinateY < 4; coordinateY++)
{
if (tetromino.Shape[tetromino.Rotate(coordinateX, coordinateY, tetromino.Rotation)] != '.')
{
field.PlayingField[(tetromino.X + coordinateX), (tetromino.Y + coordinateY)] = tetromino.Sprite;
field.PlayingField[(tetromino.X + coordinateX), (tetromino.Y + coordinateY)] = tetromino.Sprite;
}
}
}
// Check for lines
for (int coordinateY = 0; coordinateY < 4; coordinateY++)
{
if (tetromino.Y + coordinateY < field.Height - 1)
{
bool makesLine = true;
for (int coordinateX = 1; coordinateX < field.PlayingField.GetLength(0) - 1; coordinateX++)
{
makesLine &= (field.PlayingField[coordinateX, tetromino.Y + coordinateY]) != 'B';
}
if (makesLine)
{
// Remove Line, set to =
for (int coordinateX = 1; coordinateX < field.PlayingField.GetLength(0) - 1; coordinateX++)
{
field.PlayingField[coordinateX, tetromino.Y + coordinateY] = 'D';
}
lines.Add(tetromino.Y + coordinateY);
}
}
}
//score += 25;
//if(lines.Count > 0) score += (lines.Count) * 100;
//// Pick New Piece
//currentX = _fieldWidth / 2;
//currentY = 0;
//currentRotation = 0;
//currentPiece = new Random().Next() % 7;
tetromino = new Tetromino();
// If piece does not fit straight away, game over!
_isGameOver = !tetromino.WillFitAtDestination(tetromino.X, tetromino.Y, tetromino.Rotation, field);
}
}
if (forceDown || keys.Any(k => k == true))
{
field.UpdateField(tetromino);
field.DrawField2(tetromino);
field.ResetField(tetromino);
// Animate Line Completion
if (lines.Count > 0)
{
// Display Frame (cheekily to draw lines)
Thread.Sleep(400); // Delay a bit
foreach (var line in lines)
{
for (int px = 1; px < field.PlayingField.GetLength(0) - 1; px++)
{
for (int py = line; py > 0; py--)
{
field.PlayingField[px, py] = field.PlayingField[px, py - 1];
}
field.PlayingField[px, 0] = 'B';
}
}
lines.Clear();
}
}
}
}