/**
 *  <PRE>
 *  World.java
 *
 *  Revisions: 1.0 Sep. 02, 2002
 *               Created the World class
 *             1.1 Sep. 03, 2002
 *               Compiled, Tested, Run
 *             1.2 Sep. 05, 2002
 *               Commented (late thanks to failed winXP SP1)
 *			   1.3 Sep. 16, 2002
 *		         Added omit nulls, gg Outlook Express for not updating...
 *  </PRE>
 *
 *  Collaboration Statement:
 *    I worked on the homework assignment alone, using only             
 *    course materials.
 *
 *  Created with JCreatorLE, some indents are off when viewed through notepad
 *    or EMACS
 *
 *  @author <A HREF="mailto:gtg184g@mail.gatech.edu">Jose Manuel Caban</A>
 *  @version Version 1.3, Sep. 16, 2002
 */

public class World {
   
   private City[][] map;
   public static final boolean bDebug = false;
   
   ////////////
   //Modifier//
   ////////////
   public void setWorld(City[][] twoDArray){
   	map = twoDArray;
   }
   
   ///////////
   //Methods//
   ///////////
   
  /**
   *Find city at given latitude and longitude
   *@param lat, the latitude
   *@param lon, the longitude
   *@return the City, or NULL if none exists
   */
   public City getCityAt(int lat, int lon){
   	City temp = new City();
   	
   	if(map[lon][lat] != null){
   		temp = map[lon][lat];
   		return temp;
   	}
  	else {
  		return null;
  	}
   }//end of getCityAt(int lat, int lon)
  
  /**
   *Find cities at given latitude
   *@param lat, the latitude
   *@return the Cities at the given latitude
   */
   public City[] getCititesAtLatitude(int lat){
   	
   	//omit nulls without destroying map
   	int nulls = 0;
   	
   	for(int i=0; i<map.length; i++){
   		if(map[i][lat] == null){
   			nulls++;
   		}
    }
   	
   	//create temp array for latitude
   	City[] array = new City[map.length-nulls];
   	int current = 0;
   	
   	if(bDebug){
   		System.out.println("Begin Iteration getCititesAtLat");
    }
   	
   	for(int i=0; i<map.length; i++){
   		if(map[i][lat] != null){
   			array[current] = map[i][lat];
   			current++;
   		}
   	}
   	/////////////////
   	
   	if(bDebug){
   		System.out.println("End Iteration getCititesAtLat");
   	}
   	
   	return array;
   }//end of getCititesAtLatitude, yes its misspelled in the .nfo

  /**
   *Find cities at given longitude
   *@param lon, the longitude
   *@return the Cities at the given longitude
   */
   public City[] getCititesAtLongitude(int lon){
   	//omit nulls without destroying map
   	int nulls = 0;
   	
   	for(int i=0; i<map[lon].length; i++){
   		if(map[lon][i] == null){
   			nulls++;
   		}
    }
   	
   	//create temp array for longitude
   	City[] array = new City[map[lon].length-nulls];
   	int current = 0;
   	
   	if(bDebug){
   		System.out.println("Begin Iteration getCititesAtLon");
    }
   	
   	for(int i=0; i<map[lon].length; i++){
   		if(map[lon][i] != null){
   			array[current] = map[lon][i];
   			current++;
   		}
   	}
   	
   	if(bDebug){
   		System.out.println("End Iteration getCititesAtLon");
    }
   	
   	return array;
   }//end of getCititesAtLongitude
	
  /**
   *  Debugging main for class World.  
   *  This method will rigorously test my code.
   *
   *  <br><br>
   *  @param args a String array of command line arguments.
   */
  public static void main(String[] args) {
    City[][] twoDArray = new City[16][6];
        
    //create the 8 cities, 2 per row....mwahahaha...
    
    //city #1
    twoDArray[0][0] = new City();
    twoDArray[0][0].setName("Weston");
    twoDArray[0][0].setCountry("United States");
    twoDArray[0][0].setPopulation(4332);
    
    if(bDebug){
    	System.out.println("works");
    	System.out.flush();
    }
    
    //city #2
    twoDArray[0][3] = new City();
    twoDArray[0][3].setName("Nerd Land");
    twoDArray[0][3].setCountry("Everquest on WINEX");
    twoDArray[0][3].setPopulation(4511); //too many, thats the population
    
    //city #3
    twoDArray[1][2] = new City();
    twoDArray[1][2].setName("Atlanta");
    twoDArray[1][2].setCountry("Georgia");
    twoDArray[1][2].setPopulation(3304000); //as of 2000, yes I checked
    
    //city #4
    twoDArray[1][3] = new City();
    twoDArray[1][3].setName("Vulcan");
    twoDArray[1][3].setCountry("Nerdtopia"); //actually, I like Star Trek :|
    twoDArray[1][3].setPopulation(5252); //as of 2001
    
    //city #5
    twoDArray[2][0] = new City();
    twoDArray[2][0].setName("Leene Square");
    twoDArray[2][0].setCountry("Chrono Trigger Land");
    twoDArray[2][0].setPopulation(21); //probably about right ;)
    
    //city #6
    twoDArray[2][2] = new City();
    twoDArray[2][2].setName("Doom");
    twoDArray[2][2].setCountry("When Id was good");
    twoDArray[2][2].setPopulation(3); //number of classics Id made
    
    //city #7
    twoDArray[3][1] = new City();
    twoDArray[3][1].setName("John Romero");
    twoDArray[3][1].setCountry("Ion Storm"); //hehe, not anymore :(
    twoDArray[3][1].setPopulation(1);
    
    //city #8
    twoDArray[3][3] = new City();
    twoDArray[3][3].setName("Zelda");
    twoDArray[3][3].setCountry("Miyamato's Best");
    twoDArray[3][3].setPopulation(4); //number of classics he made
    /*************************************************************/
    
    World world = new World();
    world.setWorld(twoDArray);
    
    System.out.println(world.getCityAt(0,0));
    System.out.println(world.getCityAt(2,1));
    
    //////////
    System.out.println("\n END TEST GETCITY START LAT\n");
    //////////
    
    //test latitude
    City[] latitude;
    latitude = world.getCititesAtLatitude(3);
    
    for(int i = 0; i<latitude.length; i++){
    	System.out.println(latitude[i]);
    }
    
    //////////
    System.out.println("\n END TEST LAT START LON\n");
    //////////    
        
    //test longitude
    City[] longitude;
    longitude = world.getCititesAtLongitude(2);
    
    for(int i = 0; i<longitude.length; i++){
    	System.out.println(longitude[i]);
    }
    
    
    
  }// end of main(String[] args)

}// end of class World