/// <summary>Make a new tetris block.</summary>
/// <param name="blockSprites">The sprite string containing the block sprites.</param>
/// <param name="field">The field that the block is in.</param>
/// <param name="isColor">Are colors enabled?</param>
/// <param name="blockType">The shape of the block</param>
public static TetrisBlock createBlock(Texture2D blockSprites, PlayingField field, bool isColor = false, sbyte blockKind = -1)
{
TetrisBlock block;
if (blockKind == -1)
{ blockKind = (sbyte)rand.Next(8); }
switch (blockKind)
{
case 0:
// square
block = new blockSquare(blockSprites, field, isColor);
break;
case 1:
// horizontal line
block = new blockLineH(blockSprites, field, isColor);
break;
case 2:
// Z shape
block = new blockZ(blockSprites, field, isColor);
break;
case 3:
// reverse Z shape
block = new blockReverseZ(blockSprites, field, isColor);
break;
case 4:
// L shape
block = new blockFlatL(blockSprites, field, isColor);
break;
case 5:
// reverse L shape
block = new blockFlatReverseL(blockSprites, field, isColor);
break;
case 6:
// vertical line
block = new blockLineV(blockSprites, field, isColor);
break;
case 7:
// T shape
block = new blockRoof(blockSprites, field, isColor);
break;
default:
// square
block = new blockSquare(blockSprites, field, isColor);
break;
}
return block;
}
/// <summary>Updates the game.</summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// base updates
gameState = reserveGameState;
input.Update(gameTime);
switch (gameState)
{
case GameStates.Menu:
// menu buttons
foreach(Button button in menuButtons)
{
if (button.isClicked(input))
{
switch (button.Action)
{
case MenuActions.Mono:
// start monochrome mode
reserveGameState = GameStates.Playing;
isColor = false;
break;
case MenuActions.Color:
// start color mode
reserveGameState = GameStates.Playing;
isColor = true;
break;
case MenuActions.Info:
// open info screen
reserveGameState = GameStates.Info;
break;
case MenuActions.Quit:
// quir the game
Exit();
break;
}
}
}
if (reserveGameState == GameStates.Playing)
{
// set up for playing the selected mode
// create the field
field = new PlayingField(fieldWidth, fieldHeight, blockSprites, isColor);
// create the blocks
tetrisBlockCurrent = TetrisBlock.createBlock(blockSprites, field, isColor);
tetrisBlockNext = TetrisBlock.createBlock(blockSprites, field, isColor);
tetrisBlockCurrent.placeBlock();
tetrisBlockCurrent.setMoveTimer(moveTimerLim);
// score viewer
scoreViewerCurrent = isColor ? scoreViewerColor : scoreViewerMono;
numbersCurrent = isColor ? numbersColor : numbersMono;
scoreSplicer();
speedLvlSplicer();
}
break;
case GameStates.Info:
// button for going back to the menu
if (backButton.isClicked(input)) { reserveGameState = GameStates.Menu; }
break;
case GameStates.Playing:
// make new blocks
if (tetrisBlockCurrent == null)
{
if (newBlockTimer >= newBlockTimerLim)
{
tetrisBlockCurrent = tetrisBlockNext;
tetrisBlockNext = TetrisBlock.createBlock(blockSprites, field, isColor);
if (!tetrisBlockCurrent.placeBlock())
{
// could not place the block
// GAME OVER
reserveGameState = GameStates.GameOver;
break;
}
tetrisBlockCurrent.setMoveTimer(moveTimerLim);
}
else
{ newBlockTimer += gameTime.ElapsedGameTime.Milliseconds; }
}
if (tetrisBlockCurrent != null)
{
// make the tetris block handle it's user inputs and movement
couldGoDown = tetrisBlockCurrent.handleMovement(gameTime, input);
if (!couldGoDown)
{
// reached bottom or hit existing block
blockHitSound.Play();
field.placeBlock(tetrisBlockCurrent);
scorePoints(field.checkClearedRows(tetrisBlockCurrent.OffsetY));
if (field.reachedTop())
{
// the top of the field could not be cleared
// GAME OVER
reserveGameState = GameStates.GameOver;
gameOverString1 = "You made it to speed level " + (Math.Min(finishedRows, (moveTimerLimBase - moveTimerLimMin) / 2)).ToString();
gameOverString2 = "and earned " + score.ToString() + " points!";
}
resetBlock();
}
}
break;
case GameStates.GameOver:
// TODO: GAME OVER text and score view
// buttons
if (menuButton.isClicked(input))
{
// back to menu
reserveGameState = GameStates.Menu;
// reset for next playthrough
score = 0;
finishedRows = 0;
moveTimerLim = moveTimerLimBase;
}
if (menuButtons[3].isClicked(input)) { Exit(); } // quit game
break;
}
// you can always exit the game
if (input.KeyPressed(Keys.Escape)) { Exit(); }
base.Update(gameTime);
}
/// <summary>Make a new tetris block. (first 16 parameters are the internal positions)</summary>
/// <param name="blockSprites">The sprite string containing the block sprites.</param>
/// <param name="field">The field that the block is in.</param>
/// <param name="isColor">Are colors enabled?</param>
/// <param name="blockType">The shape of the block</param>
public TetrisBlock(bool x1y1, bool x2y1, bool x3y1, bool x4y1,
bool x1y2, bool x2y2, bool x3y2, bool x4y2,
bool x1y3, bool x2y3, bool x3y3, bool x4y3,
bool x1y4, bool x2y4, bool x3y4, bool x4y4,
Texture2D blockSprites, PlayingField field, BlockType blockType, bool isColor) :
base(4, 4, blockSprites, isColor)
{
this.field = field;
this.blockType = blockType;
isNext = true;
fillStruct(x1y1, x2y1, x3y1, x4y1, x1y2, x2y2, x3y2, x4y2, x1y3, x2y3, x3y3, x4y3, x1y4, x2y4, x3y4, x4y4);
if (isColor)
{
color = (byte)rand.Next(1, 7);
colorBlock();
}
}
/// <summary>Make an L shaped block.</summary>
public blockFlatL(Texture2D blockSprites, PlayingField field, bool isColor)
: base(false, false, true, false,
true, true, true, false,
false, false, false, false,
false, false, false, false,
blockSprites, field, BlockType.FlatL, isColor) { }
/// <summary>Make a reversed Z shape block.</summary>
public blockReverseZ(Texture2D blockSprites, PlayingField field, bool isColor)
: base(false, true, true, false,
true, true, false, false,
false, false, false, false,
false, false, false, false,
blockSprites, field, BlockType.ReverseZ, isColor) { }
