// $Id: Carpenter.java,v 2.3 2003-05-07 19:17:45+09 kaiya Exp $
import java.util.*;

class Carpenter extends Thread{
private WorkPlace wp;
private Chisel[] cls;
private Hammer[] hrs;

private Random r=new Random();

private int done=0;
private int hasChisel=(-1);
private int hasHammer=(-1);

	Carpenter(WorkPlace wp, Chisel[] cls, Hammer[] hrs){
		this.wp=wp;
		this.cls=cls;
		this.hrs=hrs;
	}

	public void run(){
		while(true){
			try{ sleep(r.nextInt(1000)); }catch(Exception e){}
			if(chisel() && hammer()){
				done++;
				cls[hasChisel].release();
				hrs[hasHammer].release();
				hasChisel=hasHammer=(-1);
				wp.repaint();
				continue;
			}
			if(!hammer()){
				int i;
				for(i=0; i<hrs.length; i++){
					if(hrs[i].testAndUse()){
						hasHammer=i;
						break;
					}
				}
				if(i<hrs.length){
					wp.repaint();
					continue;
				}
			}
			if(!chisel()){
				int i;
				for(i=0; i<cls.length; i++){
					if(cls[i].testAndUse()){
						hasChisel=i;
						break;
					}
				}
				if(i<cls.length){
					wp.repaint();
					continue;
				}
			}
		}
	}

	public int get(){return done;}

	boolean chisel(){ return hasChisel>=0; }

	boolean hammer(){ return hasHammer>=0; }
}