XNA 4.0 Game Development by Example: Beginner's Guide

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Time for action – updating Game1 to update animated pieces

Modify the Update() method of the Game1 class by replacing the current case statement for the GameState.Playing state with:

case GameStates.Playing:
    timeSinceLastInput +=
        (float)gameTime.ElapsedGameTime.TotalSeconds;

    if (gameBoard.ArePiecesAnimating())
    {
        gameBoard.UpdateAnimatedPieces();
    }
    else
    {
        gameBoard.ResetWater();

        for (int y = 0; y < GameBoard.GameBoardHeight; y++)
        {
            CheckScoringChain(gameBoard.GetWaterChain(y));
        }

        gameBoard.GenerateNewPieces(true);

        if (timeSinceLastInput >= MinTimeSinceLastInput)
        {
            HandleMouseInput(Mouse.GetState());
        }
    }

    break;

What just happened?

This method is very similar to its previous incarnation. In this instance, we check to see if there are outstanding animated pieces to process. If there are, UpdateAnimatedPieces() is run. If no animated pieces currently exist, the previous behaviour of the GameStates.Playing case is executed.

Drawing animated pieces

Our animated pieces are almost completed. In fact, they all function right now but you cannot see them because we have not yet updated Draw() to take them into account.

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