import java.awt.*;
import java.net.*;
import java.util.*;

/**
 * A panel that contains a background picture which is 
 stretched to fill the entire panel.
 * @author Torbjörn Nilsson
 * @version 1.1
*/
public class BkgPanel extends Panel {
  Image bkg = null;
  ClientThread ct = null;
  boolean aMap = false;
  boolean anEgg = false;
  boolean aSpellRoom = false;
  boolean aZoom = false;
  boolean aResearch = false;
  boolean aMain = false;
  Banner banner;
  Image cityPic;

/** 
 * Default contructor
*/
  BkgPanel() {
  }

/** 
 * Use this contructor when you have a picture you want to show
*/
  BkgPanel(Image pic) {
      bkg = pic;
  }
  
/**
 * This is the most commonly used constructor. The last argument is a string naming the use of the BkgPanel. These are possible uses: "map", "egg", "spellroom", "research", "main" & "zoom".
The second argument is used for various callback-function-calls.
*/  
  BkgPanel(Image pic, ClientThread c,String s) {
      ct = c;
      bkg = pic;

      if(s.equals("map")) {

	try {
	  ImageLoader imlo = 
	    new ImageLoader(c.client.s.getInetAddress().getHostName());
	  cityPic = imlo.add("http://www.lysator.liu.se/~nexus/FOD/PICS/stad.gif");
	  imlo.loadAllImages();
	}
	catch (Exception e) {
	  System.out.println("Iconpic load error:"+e);
	}

	aMap = true;	  
	setLayout(null);
	try {
	  banner = new Banner(this,c.client.s.getInetAddress().getHostName() );
	  banner.start();
	  banner.suspend();
	}
	catch (Exception e) {
	  System.out.println("No banner! :"+e);
	}
      }
      else if(s.equals("egg"))
	anEgg = true;
      else if (s.equals("spellRoom"))
	aSpellRoom = true;
      else if (s.equals("zoom"))
	aZoom = true;
      else if(s.equals("research"))
	aResearch = true;
      else if(s.equals("main"))
	aMain = true;
      else {
	System.out.println("Error making BkgPanel!");
	System.exit(-1);
      }
  }

/**
* Callback to method "mapEvent" in Clienthread with args x and y.
*/
  public boolean mouseDown(Event e, int x, int y) {
    if (aMap) {
      ct.mapEvent(x,y);
      return true;
    }
    else
      return false;
  }

/**
* Check if a button ha been pressed when the BkgPanel has a certain use. This causes different
actions to take place in the ClientThread.
*/
  public boolean action(Event evt, Object arg){
    if(aMain){
      if(arg.equals("Quit Game"));
	 ct.gameOver = true;
	 return true;
    }
    else if(anEgg){
      if(arg.equals("New Egg")){	      
	new Egg(ct);
	return true;
      }
      return false;
    }
    else if (aSpellRoom) {
      if (arg.equals("Cast Spell")) {
	ct.castSpell();
	return true;
      }
      return false;
    }
    else{
      return false;
    }
  }

  
/**
 * If BkgPanel is used as a research room, this method creates a new ResearchSpell if a spell
is chosen from the list.
*/  
  public boolean handleEvent(Event evt) {
      if(aResearch){
	  switch(evt.id) {
	    case Event.LIST_SELECT:
	      System.out.println("Forska på "+evt);
	      //      ct.spellSelect(event);
	      new ResearchSpell(ct,evt);
	      return true;
	  }
	  return false;
      }
      return super.handleEvent(evt);
} 


/**
* Remove flickering.
*/     
  public void update(Graphics g) {    // override
    paint(g);
  }

/**
* Do different painting stuff depending on the the usage of the BkgPanel.
*/
  public void paint(Graphics g) {
//    System.out.println(g);
    Dimension di = size();


    
    
    if (aZoom && ct != null) {                       //do this before drawing bkg!!!
      Area a = ct.map[ct.zoomPos.x][ct.zoomPos.y];
      bkg = ct.terrainPics[(int)a.terrain];
//      System.out.println("TERRAIN="+a.terrain+" "+bkg);
//      System.out.println(ct.terrainPics[0]);
    }

    if (bkg != null)
      g.drawImage(bkg,0,0,di.width, di.height, this );



    if (aZoom && ct != null) {
      Area a = ct.map[ct.zoomPos.x][ct.zoomPos.y];

      if (a.hasCity()) {
	City c = (City)(ct.cities.get(a.getCity()));
	ct.setOwnerColor(g,c.getOwner());
	g.fillOval(ct.FRAME_WIDTH-100,30,60,60);
      }	
      
      Enumeration e = a.getDragons();
      int dc = 0, dx = 80;
      while(e.hasMoreElements()) {
	Dragon d = (Dragon)ct.dragons.get(e.nextElement());
	ct.setOwnerColor(g, d.getOwner());
	g.fillRect(10 + dx*dc, 350, 70,70);
	Image dragIm = ct.getDragonImage(d);
	g.drawImage(dragIm, 10 + dx*dc, 350, 65,65, ct.dragonPanel);
	ct.wlDragonNames[dc].setText(d.name);
	ct.wlDragonNames[dc].resize(70,18);
	dc++;
      }
    }

    if (aMap && ct != null) {
      
      g.setColor(Color.white);          //draw grid
      for(int i=1;i<di.width;i+=50) {
	g.drawLine(i,0,i,di.height);
      }
      for(int i=1;i<di.height;i+=50) {
	g.drawLine(0,i,di.width,i);
      }
      
//      System.out.println("SETTING UP MAP2");
//      System.out.flush();


      for(int x=0;x<ct.X_SIZE;x++)                 //for every area on map do:    
	for(int y=0;y<ct.Y_SIZE;y++) {
	  Area a = ct.map[x][y];
	  
	  if (a.hasCity()) {                          // show cities, use map for "foggy-view"
	    g.drawImage(cityPic,50*a.x+30, 50*a.y+10, this );
//	    City c = ((City)ct.cities.get(a.getCity()));
//	    ct.setOwnerColor(g,c.getOwner());
//	    if ( !c.Name.equals(ct.homeCityName))
//	      g.fillOval(50*a.x+40, 50*a.y+5, 10,10);
//	    else
//	      g.fillOval(50*a.x+30, 50*a.y+5, 18,18);    //MARK HOMECITY!!!
	  }
	  

	  Enumeration e = a.getDragons();             //show dragons, use map for "foggy-view"
	  int dc = 0, dx = 10, dy=10;
	  while(e.hasMoreElements()) {
	    String dNamn = (String)e.nextElement();
	    //	System.out.println(dNamn);
	    Dragon d = (Dragon)ct.dragons.get(dNamn);
	    ct.setOwnerColor(g, d.getOwner());
	    g.fillRect(50*a.x + dx*(1+dc%4), 50*(a.y+1)-dy*(1+dc/4), 8,8);
	    dc++;
	  }
	}
      
    }


    
  }

/**
 * If the BkgPanel is used as a map, there are a separate thread running animating the banners
on the map. When we want to update what banners should really be shown, this method is called, 
which then scans the map[][] in the ClientThread. 
* When we enter this method, the Banner thread has been suspended!!!
*/
  public void updateBanners() {

    banner.clear();   //prepare for new 

    for(int x=0;x<ct.X_SIZE;x++)                 //for every area on map do:    
      for(int y=0;y<ct.Y_SIZE;y++) {
	Area a = ct.map[x][y];
	
	if (a.hasCity()) {                          // show cities, use map for "foggy-view"
	  City c = ((City)ct.cities.get(a.getCity()));
//	  ct.setOwnerColor(g,c.getOwner());
	  if (c.getOwner() != -1)
	    if ( !c.Name.equals(ct.homeCityName))
	      banner.add(c.getOwner()-1, 50*a.x+40 -8 , 50*a.y+5 - 3 );
//	    g.fillOval(50*a.x+40, 50*a.y+5, 10,10);
	    else
	      banner.add(c.getOwner()-1, 50*a.x+40 - 10 , 50*a.y+5 - 10, true);
//	    g.fillOval(50*a.x+30, 50*a.y+5, 18,18);    //MARK HOMECITY!!!
	}
      

/*
	  Enumeration e = a.getDragons();             //show dragons, use map for "foggy-view"
	  int dc = 0, dx = 10, dy=10;
	  while(e.hasMoreElements()) {
	    String dNamn = (String)e.nextElement();
	    //	System.out.println(dNamn);
	    Dragon d = (Dragon)ct.dragons.get(dNamn);
	    ct.setOwnerColor(g, d.getOwner());
	    g.fillRect(50*a.x + dx*(1+dc%4), 50*(a.y+1)-dy*(1+dc/4), 8,8);
	    dc++;
	  }
*/
	
      }
      

  }

  
}