www.pudn.com > Bluegammon蓝牙的应用编程.rar > CommitMoveAnim.java

// 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 showing the user that he or she should commit his or her moves. 
 *  
 * @author Peter Andersson 
 */ 
public class CommitMoveAnim extends Animation 
{ 
  protected static final Font FONT = 
    Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, Font.SIZE_LARGE); 
  protected static final char[] MESS = 
    Resources.getChars(Resources.TXT_A_QUERY_COMMIT); 
  protected static final int MESSW = 
    FONT.charsWidth(MESS, 0, MESS.length); 
  protected static final int MESSH = 
    FONT.getHeight(); 
  protected boolean m_white; 
  protected int m_step = 0; 
  protected int m_x, m_y, m_minX, m_dx; 
  protected static final int DT = 8; 
 
  /** 
   * Creates an animation indicating that user should commit his/her moves. 
   *  
   * @param white  True for white player, false for black player. 
   */ 
  public CommitMoveAnim(boolean white) 
  { 
    m_white = !white; 
    m_x = (BoardCanvas.getInstance().getWidth() - MESSW) / 2; 
    m_y = (BoardCanvas.getInstance().getBoardHeight() - MESSH) / 2; 
    m_minX = -MESSW - 16; 
    m_dx = (m_x - m_minX) / DT; 
  } 
 
  public void paint(Graphics g) 
  { 
    int x = 0; 
    if (m_step >= 0 && m_step < DT) 
    { 
      x = m_minX + m_dx * m_step; 
    } 
    else if (m_step < DT * 5) 
    { 
      x = m_x; 
    } 
    else if (m_step < DT * 6) 
    { 
      x = m_x + m_dx * (m_step - DT * 5); 
    } 
    else if (m_step <= DT * 10) 
    { 
      return; 
    } 
    else if (m_step > DT * 10) 
    { 
      m_step = 0; 
      return; 
    } 
 
    g.setFont(FONT); 
    g.setColor(m_white ? 0x000000 : 0xffffff); 
    g.drawChars(MESS, 0, MESS.length, x - 1, m_y, Graphics.LEFT | Graphics.TOP); 
    g.drawChars(MESS, 0, MESS.length, x + 1, m_y, Graphics.LEFT | Graphics.TOP); 
    g.drawChars(MESS, 0, MESS.length, x, m_y - 1, Graphics.LEFT | Graphics.TOP); 
    g.drawChars(MESS, 0, MESS.length, x, m_y + 1, Graphics.LEFT | Graphics.TOP); 
    g.setColor(m_white ? 0xffffff : 0x000000); 
    g.drawChars(MESS, 0, MESS.length, x, m_y, Graphics.LEFT | Graphics.TOP); 
  } 
 
  public void next() 
  { 
    m_step++; 
    BoardCanvas.getInstance().requestRepaint(); 
  } 
 
  public boolean isFinished() 
  { 
    return !BoardCanvas.getInstance().waitingForCommit() 
        || BoardMediator.isGameFinished(); 
  } 
 
  /** 
   * Called when animation is finished, repaints the  
   * whole canvas. 
   */ 
  public void onExit() 
  { 
    BoardCanvas.getInstance().requestRepaint(); 
  } 
 
  public long getInterval() 
  { 
    return 40; 
  } 
}