internal ITetromino CreateFromStyle(TetrominoStyle style)
{
switch (style)
{
case TetrominoStyle.Straight:
return(new Straight(this.GameBoard));
case TetrominoStyle.TShaped:
return(new TShaped(this.GameBoard));
case TetrominoStyle.LeftZigZag:
return(new LeftZigZag(this.GameBoard));
case TetrominoStyle.RightZigZag:
return(new RightZigZag(this.GameBoard));
case TetrominoStyle.LShaped:
return(new LShaped(this.GameBoard));
case TetrominoStyle.ReverseLShaped:
return(new ReverseLShaped(this.GameBoard));
case TetrominoStyle.Block:
default:
return(new Block(this.GameBoard));
}
}
public Tetromino CreateFromStyle(TetrominoStyle style, Grid grid)
{
return(style switch
{
TetrominoStyle.Block => new Block(grid),
TetrominoStyle.Straight => new Straight(grid),
TetrominoStyle.TShaped => new TShaped(grid),
TetrominoStyle.LeftZigZag => new LeftZigZag(grid),
TetrominoStyle.RightZigZag => new RightZigZag(grid),
TetrominoStyle.LShaped => new LShaped(grid),
TetrominoStyle.ReverseLShaped => new ReverseLShaped(grid),
_ => new Block(grid),
});
public async Task Start()
{
//set the state to playing
this.State = GameState.Playing;
Console.WriteLine("game start");
//Generate the styles of the first three tetrominos that will be dropped
NextStyle = NextTetrominoStyle();
SecondNextStyle = NextTetrominoStyle(NextStyle);
ThirdNextStyle = NextTetrominoStyle(NextStyle, SecondNextStyle);
//game loop
while (this.State != GameState.GameOver)
{
if (this.State == GameState.Playing)
{
//Create the next tetromino to be dropped from the already-determined nextStyle,
//and move the styles "up" in line
CurrentTetromino = CreateFromStyle(NextStyle);
Console.WriteLine("CurrentTetromino=" + CurrentTetromino.Style);
NextStyle = SecondNextStyle;
SecondNextStyle = ThirdNextStyle;
ThirdNextStyle = NextTetrominoStyle(CurrentTetromino.Style, NextStyle, SecondNextStyle);
//Update the display
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Game)));
//Run the current tetromino until it can't move anymore
await RunCurrentTetromino();
//If any rows are filled, remove them from the board
await ClearCompleteRows();
//If the score is high enough, move the user to a new level
//LevelChange();
//evaluate the gameover condition
if (GameBoard.HasAnyTetrominoInRow(GameBoard.Rows - 1))
{
this.State = GameState.GameOver;
}
}
//delay
await Delay(150);
}
Console.WriteLine("game over");
}