import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class LifeModel implements ActionListener
{

    /*
     *  This is the Model component.
     */

    private static int SIZE = 60;
    private LifeCell[][] myGrid;
    LifeView myView;
    Timer timer;

    // initial population from file or random if no file available
    public LifeModel(LifeView view)
    {
        int r, c;
        myGrid = new LifeCell[SIZE][SIZE];
        for ( r=0; r < SIZE; r++ )
            for ( c = 0; c < SIZE; c++ )
                myGrid[r][c] = new LifeCell();

        EasyReader infile = new EasyReader("lifegrid.dat");
        if ( infile.bad() )
        // use random population
        {                                           
            for ( r=0; r < SIZE; r++ )
            {
                for ( c = 0; c < SIZE; c++ )
                {
                    if ( Math.random() > 0.85)
                        myGrid[r][c].setAliveNow(true);
                }
            }
        }
        else
        // use file input from inFile
        {                                    
            int numInitialCells = infile.readInt();
            for (int count=0; count<numInitialCells; count++)
            {
                r = infile.readInt();
                c = infile.readInt();
                myGrid[r][c].setAliveNow(true);
            }
            infile.close();
        }

        myView = view;
        myView.updateView(myGrid);
    }

    public void pause()
    {
        timer.stop();
    }
    public void resume()
    {
        timer.restart();
    }
    public void run()
    {
        timer = new Timer(50, this);
        timer.setCoalesce(true);
        timer.start();
    }

    // get here each time timer fires
    public void actionPerformed(ActionEvent e)
    {
        oneGeneration();
        myView.updateView(myGrid);
    }

    private void oneGeneration()
    {
        /* student code here */
        return;
    }
}