Package com.google.gwt.maeglin89273.game.ashinyballonthecross.client.page

Source Code of com.google.gwt.maeglin89273.game.ashinyballonthecross.client.page.EndingPage

/**
*
*/
package com.google.gwt.maeglin89273.game.ashinyballonthecross.client.page;

import com.google.gwt.canvas.dom.client.Context2d;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.maeglin89273.game.ashinyballonthecross.client.core.ui.button.BackButton;
import com.google.gwt.maeglin89273.game.mengine.core.MEngine;
import com.google.gwt.maeglin89273.game.mengine.layer.GroupLayer;
import com.google.gwt.maeglin89273.game.mengine.layer.ImageLayer;
import com.google.gwt.maeglin89273.game.mengine.page.GeneralPage;
import com.google.gwt.maeglin89273.game.mengine.physics.Point;

/**
* @author Maeglin Liao
*
*/
public class EndingPage extends GeneralPage {
 
  private static final float PER_ALPHA_VALUE=0.02f;
  private float alpha=0;
  private GroupLayer root;
  private ImageLayer img;
  private ImageLayer background;
  private BackButton button;
  /**
   *
   */
  public EndingPage() {
    root=new GroupLayer();
    img=new ImageLayer(MEngine.getAssetManager().getSpriteSheet("images/ending.png"), getGameWidth(), getGameHeight());
    background=new ImageLayer(MEngine.getAssetManager().getSpriteSheet("images/blue_bg.png"),getGameWidth(),getGameHeight());
    button=new BackButton(new Point(55,getGameHeight()-55), 50);
  }

  /* (non-Javadoc)
   * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent)
   */
  @Override
  public void onClick(ClickEvent event) {
    if(alpha>=1){
      button.onClick(MEngine.getMousePosition());
    }

  }

  /* (non-Javadoc)
   * @see com.google.gwt.maeglin89273.game.mengine.game.HasGameLoop#update()
   */
  @Override
  public void update() {
    if(alpha<1){
      alpha+=PER_ALPHA_VALUE;
    }

  }

  /* (non-Javadoc)
   * @see com.google.gwt.maeglin89273.game.mengine.game.HasGameLoop#draw(com.google.gwt.canvas.dom.client.Context2d)
   */
  @Override
  public void draw(Context2d context) {
   
    context.save();
    context.setGlobalAlpha(alpha);
    root.draw(context);
    context.restore();
  }

  /* (non-Javadoc)
   * @see com.google.gwt.maeglin89273.game.mengine.page.Page#onScreen()
   */
  @Override
  public void onScreen() {
    root.addComponentOnLayer(button);
    root.addLayer(img);
    root.addLayer(background);
  }

}
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