winneranim.java

--- --- --- 基于J2ME的游戏程序--------很有技巧性的程序

// Copyright (c) 2005 Sony Ericsson Mobile Communications AB
//
// This software is provided "AS IS," without a warranty of any kind. 
// ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
// INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
// PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. 
//
// THIS SOFTWARE IS COMPLEMENTARY OF JAYWAY AB (www.jayway.se)

package bluegammon.gui.animation;

import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;

import bluegammon.Resources;
import bluegammon.gui.BoardCanvas;
import bluegammon.logic.BoardMediator;

/**
 * Animation for indicating a winner. Spawns
 * subanimations of flying pieces.
 * 
 * @see bluegammon.gui.animation.WinnerPieceMoveAnim
 * @author Peter Andersson
 */
public class WinnerAnim extends Animation
{
  protected static final int WHITE_COL = 0xffffff;
  protected static final int BLACK_COL = 0x000000;
  protected static final char[] TXT_WHITE_WINS =
    Resources.getChars(Resources.TXT_A_WHITE_WINS);
  protected static final char[] TXT_BLACK_WINS = 
    Resources.getChars(Resources.TXT_A_BLACK_WINS);
  protected static final Font BIG_FONT =
    Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, Font.SIZE_LARGE);
  protected static final Font SMALL_FONT =
    Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, Font.SIZE_MEDIUM);
  
  protected boolean m_whiteWinner;
  protected int m_pieces = 0;
  protected int m_piecesLeft;
  protected int m_pts;
  protected int m_d, m_x, m_y, m_fg, m_bg, m_step, m_tw, m_th;
  protected char[] m_colWinnerTxt;
  protected char[] m_piecesTxt;
  protected char[] m_ptsTxt;
  protected char[] m_totalTxt;

  /**
   * Creates a new winner animation.
   * @param white		True for white winner, false for black winner.
   * @param piecesLeft	Number of loser pieces left.
   * @param pts			Number of points per piece.
   */
  public WinnerAnim(boolean white, int piecesLeft, int pts)
  {
    m_whiteWinner = white;
    m_ptsTxt = ("x" + pts + " " +
        Resources.getString(pts > 1 ? Resources.TXT_A_POINTS : Resources.TXT_A_POINT)
      ).toCharArray();
    m_piecesLeft = piecesLeft;
    m_pts = pts;
    m_d = Math.min(BoardCanvas.getInstance().getWidth(), BoardCanvas
        .getInstance().getHeight()) / 2;
    m_x = BoardCanvas.getInstance().getWidth() / 2;
    m_y = (BoardCanvas.getInstance().getHeight() - m_d) / 2;
    m_fg = WHITE_COL;
    m_bg = BLACK_COL;
    m_colWinnerTxt = TXT_BLACK_WINS;
    if (white)
    {
      m_fg = BLACK_COL;
      m_bg = WHITE_COL;
      m_colWinnerTxt = TXT_WHITE_WINS;
    }
    m_tw = BIG_FONT.charsWidth(m_colWinnerTxt, 0, m_colWinnerTxt.length);
    m_th = BIG_FONT.getHeight();
  }

  public void paint(Graphics g)
  {
    if (BoardMediator.isGameFinished())
    {
      int y = m_y;
      drawText(m_colWinnerTxt, g, BIG_FONT, y);
      y += (1.5f * (float) m_th);
      if (m_pieces > 0)
      {
        drawText(m_piecesTxt, g, SMALL_FONT, y);
        y += m_th;
        drawText(m_ptsTxt, g, SMALL_FONT, y);
        y += (1.5f * (float) m_th);
        drawText(m_totalTxt, g, BIG_FONT, y);
      }
    }
  }

  public void next()
  {
    m_step++;
    BoardCanvas.getInstance().requestRepaint();
    if (m_pieces < m_piecesLeft)
    {
      BoardCanvas.getInstance().addWinningPieceAnimation(!m_whiteWinner, this);
    }
  }

  public boolean isFinished()
  {
    return !BoardMediator.isGameFinished();
  }

  public long getInterval()
  {
    return 500;
  }

  /**
   * Called from <code>WinnerPieceMoveAnim</code> when the
   * piece has flyed beyond the screen. Updates the score count.
   */
  public void piecePlus()
  {
    m_pieces++;
    int score = m_pieces * m_pts;
    m_piecesTxt = (m_pieces + " " +
        Resources.getString(m_pieces > 1 ? Resources.TXT_A_PIECES : Resources.TXT_A_PIECE)
      ).toCharArray();
    m_totalTxt = (score + " " +
        Resources.getString(score > 1 ? Resources.TXT_A_POINTS : Resources.TXT_A_POINT)
      ).toCharArray();
  }

  /**
   * Draws centered text in winning animation manner.
   * @param txt	The text to draw.
   * @param g	The graphic context to draw to.
   * @param f	The font of the text.
   * @param y	The y coordinate of the text. 
   */
  protected void drawText(char[] txt, Graphics g, Font f, int y)
  {
    g.setFont(f);
    g.setColor(m_fg);
    g.drawChars(txt, 0, txt.length, m_x + 1, y,
        Graphics.BASELINE | Graphics.HCENTER);
    g.drawChars(txt, 0, txt.length, m_x - 1, y,
        Graphics.BASELINE | Graphics.HCENTER);
    g.drawChars(txt, 0, txt.length, m_x, y + 1,
        Graphics.BASELINE | Graphics.HCENTER);
    g.drawChars(txt, 0, txt.length, m_x, y - 1,
        Graphics.BASELINE | Graphics.HCENTER);
    g.setColor(m_bg);
    g.drawChars(txt, 0, txt.length, m_x, y,
        Graphics.BASELINE | Graphics.HCENTER);
  }

}