private bool TryMove(Tetromino t, Vec2 move, int rotate, bool allowKicks)
{
Vec2 newPos = t.Pos + move;
int newAngle = (t.Angle + rotate) % 4;
if (TestTetromino(t.Type, newPos, newAngle))
{
t.Pos = newPos;
t.Angle = newAngle;
return(true);
}
if (allowKicks)
{
foreach (var tryKick in m_GameRules.GetAllowedKicks(m_Board, t, newAngle))
{
newPos = t.Pos + move + new Vec2(tryKick, 0);
if (TestTetromino(t.Type, newPos, newAngle))
{
t.Pos = newPos;
t.Angle = newAngle;
return(true);
}
}
}
return(false);
}
private void ApplyLock(Tetromino t, Movement movement)
{
if (movement == Movement.Down)
{
t.Locked = true;
}
}
private void ApplyGravity(Tetromino t)
{
while (TryMove(t, new Vec2(0, -1), 0, false))
{
;
}
}
public ITetromino StepTetromino(ITetromino prevTetromino, Input input)
{
var t = new Tetromino(prevTetromino);
ApplyRotate(t, input.Rotate, true);
ApplyMove(t, input.Move);
ApplyGravity(t);
ApplyLock(t, input.Move);
return(t);
}
public ITetromino SpawnTetromino(TetrominoType tetrominoType, Input input)
{
var t = new Tetromino(tetrominoType, m_Board.GetSpawnPos(), 0, false);
ApplyRotate(t, input.Rotate, false);
if (!TestTetromino(t))
{
return(null);
}
ApplyGravity(t);
return(t);
}
private void ApplyMove(Tetromino t, Movement movement)
{
switch (movement)
{
case Movement.Left:
TryMove(t, new Vec2(-1, 0), 0, false);
return;
case Movement.Right:
TryMove(t, new Vec2(1, 0), 0, false);
return;
default:
return;
}
}
private void ApplyRotate(Tetromino t, Rotation rotation, bool allowKicks)
{
switch (rotation)
{
case Rotation.A:
case Rotation.C:
TryMove(t, Vec2.Zero, 3, allowKicks);
return;
case Rotation.B:
TryMove(t, Vec2.Zero, 1, allowKicks);
return;
default:
return;
}
}
private bool TestTetromino(Tetromino tetromino)
{
return(TestTetromino(tetromino.Type, tetromino.Pos, tetromino.Angle));
}
