/// <summary>
/// Compute next state of the world. Complete game logic for one step.
/// </summary>
public void Step(TetrisWorld.ActionInputType input)
{
IsMerging = false;
if (m_shouldSpawnTetromino)
{
m_shouldSpawnTetromino = false;
if(!SpawnTetromino())
{
// game over
ResetLost();
return;
}
}
bool isDrop = false;
if (m_stepsFromLastDrop >= GetWaitStepsPerDrop())
{
isDrop = true;
}
switch(input)
{
case TetrisWorld.ActionInputType.MoveDown:
{
isDrop = true;
break;
}
case TetrisWorld.ActionInputType.MoveLeft:
{
m_tetromino.TryMoveLeft();
break;
}
case TetrisWorld.ActionInputType.MoveRight:
{
m_tetromino.TryMoveRight();
break;
}
case TetrisWorld.ActionInputType.RotateLeft:
{
m_tetromino.TryRotateLeft();
break;
}
case TetrisWorld.ActionInputType.RotateRight:
{
m_tetromino.TryRotateRight();
break;
}
default:
case TetrisWorld.ActionInputType.NoAction:
{
break;
}
}
m_scoreDelta = 0;
if (isDrop)
{
m_stepsFromLastDrop = 0;
if(!m_tetromino.TryMoveDown())
{
IsMerging = true;
CalculateMerge();
m_gameBoard.MergeTetrominoWithGameBoard(m_tetromino);
int erasedLines = m_gameBoard.EraseFullLines(); // most often returns 0
m_scoreDelta = 100 * erasedLines * erasedLines;
m_score += m_scoreDelta;
m_totalErasedLines += erasedLines;
m_level = m_totalErasedLines / Math.Max(1,m_params.ClearedLinesPerLevel);
m_tetromino = null;
m_shouldSpawnTetromino = true;
}
}
else
{
m_stepsFromLastDrop++;
}
FillWorldState();
}
public TetrisWorldEngine(TetrisWorld world, WorldEngineParams pars)
{
m_params = pars;
m_world = world;
m_rndGen = new Random();
}
