//Description: Create a new random shape
private void CreateNewShape()
{
if (mNextShape.Type == Shape.ShapeType.NotSet)
{
mNextShape.Type = ((Shape.ShapeType)(RandomNumber(0, 6)));
}//end if (mNextShape.Type == Shape.ShapeType.NotSet)
mCurrentShape.Type = mNextShape.Type;
mNextShape.Type = ((Shape.ShapeType)(RandomNumber(0, 6)));
mCurrentShape.PositionX = 5;
mCurrentShape.PositionY = 0;
mCurrentShape.Rotation = 0;
// Andrew: Update Next Shape
Message m = new Message();
m.Type = Message.MessageType.UpdateNextShape;
m.ShapeType = mNextShape.Type;
m.PositionX = mNextShape.PositionX;
m.PositionY = mNextShape.PositionY;
m.Rotation = mNextShape.Rotation;
msgQ.Enqueue(m);
}
//Description: Automatically move the current piece down towards the bottom of the playing area as time passes
private void AutoFall(float elapsedSeconds)
{
mAutoFallTimer += elapsedSeconds;
if (mAutoFallTimer >= mAutoFallThreshold)
{
mCurrentShape.PositionY += 1;
mAutoFallTimer = 0;
if (mPlayfield.CheckCollision(mCurrentShape) == true)
{
if (mCurrentShape.PositionY <= 1)
{
mCurrentState = GameState.GameOver;
return;
}//end if (mCurrentShape.PositionY <= 0)
//Add the shape to the playfield
mPlayfield.AddShape(mCurrentShape);
// Andrew: Update Playfield
Message m = new Message();
m.Type = Message.MessageType.UpdatePlayfield;
m.playField = mPlayfield.playField;
msgQ.Enqueue(m);
//Create a new shape
CreateNewShape();
}//end if (mPlayfield.CheckCollision(mCurrentShape) == true)
}//end if (mAutoFallTimer >= 1)
}
//Update the playfield area, clearing lines, updating score and playing sounds
protected void UpdatePlayfield()
{
//Check for full rows
int aNumberOfLinesCleared = mPlayfield.CheckRows();
if (aNumberOfLinesCleared > 0)
{
mNumberOfLinesCleared += 1;
mTotalLines += 1;
// Andrew: Update Playfield
Message m = new Message();
m.Type = Message.MessageType.UpdatePlayfield;
m.playField = mPlayfield.playField;
msgQ.Enqueue(m);
// Andrew: Update Score
m = new Message();
m.Type = Message.MessageType.UpdateScoreboard;
m.Score = mScore;
m.TotalLines = mTotalLines;
m.Level = mLevel;
msgQ.Enqueue(m);
}
else
{
if (mNumberOfLinesCleared >= 3)
{
mScore += 1000;
// Andrew: Update Score
Message m = new Message();
m.Type = Message.MessageType.UpdateScoreboard;
m.Score = mScore;
m.TotalLines = mTotalLines;
m.Level = mLevel;
msgQ.Enqueue(m);
}
else if (mNumberOfLinesCleared > 0)
{
mScore += 100 * mNumberOfLinesCleared;
// Andrew: Update Score
Message m = new Message();
m.Type = Message.MessageType.UpdateScoreboard;
m.Score = mScore;
m.TotalLines = mTotalLines;
m.Level = mLevel;
msgQ.Enqueue(m);
}//end if (mNumberOfLinesCleared >= 3)
mNumberOfLinesCleared = 0;
}//end if (aNumberOfLinesCleared > 0)
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected void UpdateThread()
{
#if XBOX
Thread.CurrentThread.SetProcessorAffinity(3);
#endif
while (true)
{
waitUpdate.WaitOne();
Thread.MemoryBarrier();
//The time since Update was called last
float elapsed = (float)mGameTime.ElapsedGameTime.TotalSeconds;
//Get the current state of the keyboard (what keys are and are not being pressed)
KeyboardState aKeyboard = kbState;
//If the Escape key has been pressed, then exit the game
if (aKeyboard.IsKeyDown(Keys.Escape) == true || GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}//end if (aKeyboard.IsKeyDown(Keys.Escape) == true)
//Update the game objects
UpdateGameObjects(elapsed, aKeyboard);
// Andrew: Update Current Shape
Message m = new Message();
m.Type = Message.MessageType.UpdateCurrentShape;
m.ShapeType = mCurrentShape.Type;
m.PositionX = mCurrentShape.PositionX;
m.PositionY = mCurrentShape.PositionY;
m.Rotation = mCurrentShape.Rotation;
msgQ.Enqueue(m);
// Wake up Draw Thread
waitDraw.Set();
}
}
//Update the game to the next level if appropriate
protected void UpdateLevel()
{
//Update the level if the number of lines cleared is great enough to move to the next level
if (mTotalLines >= (mLevel + 1) * 10)
{
mLevel += 1;
mBlockColor = GetBlockColor();
mAutoFallThreshold -= .1F;
// Andrew: Update Score
Message m = new Message();
m.Type = Message.MessageType.UpdateScoreboard;
m.Score = mScore;
m.TotalLines = mTotalLines;
m.Level = mLevel;
msgQ.Enqueue(m);
}//end if (mTotalLines >= (mLevel + 1) * 10)
}
