import AIMath;

public class Executor implements Runnable
{
	protected GenerationsContainer gc;
	protected GenerationsGenerator gGen;
	protected boolean isFirst;
	public Executor(GenerationsGenerator gg)
	{
		System.out.println("Executor initialized");
		gGen=gg;
		reset();
	}
	public void reset()
	{
		System.out.println("Executor has been reset");
		gc=new GenerationsContainer();
		isFirst=true;
	}
	public GenerationsGenerator getGenerationsGenerator()
	{
		return gGen;
	}
	protected Generation getNextGeneration()
	{
		if (isFirst)
		{
			//System.out.println("Generating initial generation");
			isFirst=false;
			return gGen.getInitialGeneration();
		}
		else
		{
			//System.out.println("Generating offspring");
			try
			{
				Generation last=gc.getLastGeneration();
				return gGen.getNextGeneration(last);
			}
			catch (EmptyException e)
			{
				System.out.println("Coding error in Executor.getNextGeneration()");
			}
		}
		//System.out.println("Problem code reached bad point in Executor.getNextGeneration()");
		return null;  //should not reach here
	}
	public void run()
	{
		//System.out.println("Reached run()");
		Generation currGen;
		int fitnesses[];
		for(;;)
		{
			currGen=getNextGeneration();
			gc.addGeneration(currGen);
			
			//unused debug code
			//System.out.println("********************************************");
			//System.out.println("Generation #"+gc.getLastGenerationNumber());
			//fitnesses=currGen.getFitnessArray();			
			//System.out.println("Average fitness="+AIMath.average(fitnesses));
			//System.out.println("Maximum fitness="+AIMath.maximum(fitnesses));			
		}
	}
	public GenerationsContainer getGenerationsContainer()
	{
		return gc;
	}
}