package awb;
import java.awt.*;

public class RaceInfo extends Canvas
{
    private Timer myTimer;
    private int myNumLaps, myTotalLapTime,
	myBestLapTime, myCurrentLapTime, myLastLapTime;
    private String myBestLapString, myLastLapString,
	myAvgLapString;

    private RaceTrack myTrack;
    private Race myRace;
    private Image myBuffer;

    private final static Font FONT = 
		new Font("Helvetica", Font.PLAIN, 10);

    public RaceInfo(Race r, RaceTrack rt)
    {
	myRace = r;
	myTrack = rt;
	myTimer = new Timer();
	myNumLaps = 0;
	myTotalLapTime = 0;
	myCurrentLapTime = 0;
	myBestLapTime = 0;
	myBestLapString = Timer.changeTicksToString(0);
	myLastLapString = Timer.changeTicksToString(0);
	myAvgLapString = Timer.changeTicksToString(0);
    }

    public void startRace()
    {
	myTimer.startTimer();
    }

    public void stopRace()
    {
	myTimer.stopTimer();
    }

    public void update()
    {
	if (myBuffer == null) 
	    myBuffer = createImage(size().width, size().height);
	paint(myBuffer.getGraphics());
	getGraphics().drawImage(myBuffer,0,0,this);
    }

    public void paint(Graphics g)
    {
	g.clearRect(0,0,120,100);
	g.setFont(FONT);
	g.drawString("Laps Completed: " + myNumLaps,5,10);
	g.drawString("Elapsed Time: " + getElapsed(),5,20);
	g.drawString("Current Lap: " + getCurrentLap(),5,30);
	g.drawString("Last Lap: " + myLastLapString,5,40);
	g.drawString("Best Lap: " + myBestLapString,5,50);
	g.drawString("Average Lap: " + myAvgLapString,5,60);
    }

    public void incrementLap()
    {
	myNumLaps++;
	myLastLapTime = myTimer.getElapsedTicks() - myTotalLapTime;
	myTotalLapTime += myLastLapTime;
	myLastLapString = Timer.changeTicksToString(myLastLapTime);

	if ((myLastLapTime < myBestLapTime) || (myBestLapTime == 0))
	{
	    myBestLapTime = myLastLapTime;
	    myBestLapString = Timer.changeTicksToString(myBestLapTime);
	}

	if (myNumLaps == 0)
	{
	    myAvgLapString = Timer.changeTicksToString(0);
	}
	else
	{
	    myAvgLapString = Timer.changeTicksToString(myTotalLapTime
						/ myNumLaps);
	}
    }

    public int getLaps()
    {
	return myNumLaps;
    }

    public String getAvgTime()
    {
	return myAvgLapString;
    }

    public Dimension preferredSize()
    {
	return new Dimension(120,100);
    }

    private String getElapsed()
    {
	return myTimer.getElapsedTime();
    }

    private String getCurrentLap()
    {
	return Timer.changeTicksToString(myTimer.getElapsedTicks() - 
				myTotalLapTime);
    }
}