// Update is called once per frame
void Update()
{
// Update timers
_timer += Time.deltaTime;
_moveTimer += Time.deltaTime;
// Backup tetromino location and rotation
int x = _tetromino.X;
int y = _tetromino.Y;
TetrominoRotation rotation = _tetromino.Rotation;
bool merge = false;
// If Collision without action -> gameover
if (_tetromino.Collision(_gameBoard))
{
_gameover = true;
}
if (_gameover)
{
return;
}
// Left movement
if (_moveTimer > _moveTime && Input.GetKey(KeyCode.LeftArrow))
{
_tetromino.X--;
_moveTimer = 0;
}
// Right movement
if (_moveTimer > _moveTime && Input.GetKey(KeyCode.RightArrow))
{
_tetromino.X++;
_moveTimer = 0;
}
// Counter-clockwise rotation
if (Input.GetKeyDown(KeyCode.Q))
{
_tetromino.RotateLeft(_gameBoard);
}
// Clockwise rotation
if (Input.GetKeyDown(KeyCode.W))
{
_tetromino.RotateRight(_gameBoard);
}
// Tetromino fall
if (_timer > _dropTime / _dropLevel || (_timer > _quickDropTime && Input.GetKey(KeyCode.DownArrow)))
{
_tetromino.Y++;
_timer = 0;
if (_tetromino.Collision(_gameBoard))
{
merge = true;
}
}
// If collision while moving or falling, revert the last movement
if (_tetromino.Collision(_gameBoard))
{
_tetromino.X = x;
_tetromino.Y = y;
_tetromino.Rotation = rotation;
}
// If tetromino collision because of the fall, merge it into the
// gameboard and spawn a new one
if (merge)
{
_gameBoard.MergeTetromino(_tetromino);
_gameBoard.UpdateTilesPositions();
List <int> fullLines = _gameBoard.CheckFullLines();
if (fullLines.Count > 0)
{
_gameBoard.RemoveLines(fullLines);
UpdateLines(fullLines.Count);
}
SpawnNewTetromino();
}
// Update tetromino tiles on screen
_tetromino.UpdateTilesPositions();
}