Louvre

import java.awt.Color;

import os.simulation.SimulationContainer;
import os.simulation.SimulationContainerLayout;
import os.simulation.SimulationThread;
import os.simulation.gui.NoAnimationPanel;
import os.simulation.gui.SimulationFrame;
import os.simulation.gui.SimulationPanel;
import os.simulation.gui.swing.SwingSimulationPanel;
import java.util.concurrent.atomic.*;

public class Louvre {
    private Obilasci o = new Obilasci();

    private class Obilasci {
        AtomicInteger nemac = new AtomicInteger();
        AtomicInteger italijan = new AtomicInteger();
        AtomicInteger englez = new AtomicInteger();

        public void preNemac() {
            boolean ok = true;
            do {
                if (!ok)
                    Thread.yield();

                int staraVr = nemac.get();
                int novaVr = staraVr + 1;

                ok = (italijan.get() == 0) && (englez.get() == 0);
                if (ok)
                    ok = nemac.compareAndSet(staraVr, novaVr);
            } while (!ok);
        }

        public void posleNemac() {
            nemac.decrementAndGet();
        }

        public void preItalijan() {
            boolean ok = true;
            do {
                if (!ok)
                    Thread.yield();

                int staraVr = italijan.get();
                int novaVr = staraVr + 1;

                ok = (nemac.get() == 0) && (englez.get() == 0);
                if (ok)
                    ok = italijan.compareAndSet(staraVr, novaVr);
            } while (!ok);
        }

        public void posleItalijan() {
            italijan.decrementAndGet();
        }

        public void preEnglez() {
            boolean ok = true;
            do {
                if (!ok)
                    Thread.yield();

                int staraVr = englez.get();
                int novaVr = staraVr + 1;

                ok = (italijan.get() == 0) && (nemac.get() == 0);
                if (ok)
                    ok = englez.compareAndSet(staraVr, novaVr);
            } while (!ok);
        }

        public void posleEnglez() {
            englez.decrementAndGet();
        }

    }

    private class Englez extends UtilThread {

        public Englez(int id) {
            super("\u0415\u043d\u0433\u043b\u0435\u0437 " + id, BOJA_ENGLEZ, odmaraEnglez);
        }

        @Override
        protected void step() {
            odmara();
            o.preEnglez();
            obilazi();
            o.posleEnglez();
        }
    }

    private class Nemac extends UtilThread {

        public Nemac(int id) {
            super("\u041d\u0435\u043c\u0430\u0446 " + id, BOJA_NEMAC, odmaraNemac);
        }

        @Override
        protected void step() {
            odmara();
            o.preNemac();
            obilazi();
            o.posleNemac();
        }
    }

    private class Italijan extends UtilThread {

        public Italijan(int id) {
            super("\u0418\u0442\u0430\u043b\u0438\u0458\u0430\u043d " + id, BOJA_ITALIJAN, odmaraItalijan);
        }

        @Override
        protected void step() {
            odmara();
            o.preItalijan();
            obilazi();
            o.posleItalijan();
        }
    }

    // Parametri simulacije
    public static final int    DUZINA_OBILASKA   = 3000;
    public static final int    DUZINA_ODMARANJA  = 5000;
    public static final int    BROJ_DJAKA        = 8;

    // Boje
    public static final Color  BOJA_ENGLEZ        = new Color(0xFF, 0x44, 0x44);
    public static final Color  BOJA_NEMAC         = new Color(0x22, 0x22, 0x22);
    public static final Color  BOJA_ITALIJAN      = new Color(0x44, 0xCC, 0x44);

    public static final Color  BOJA_POZ_ENGLEZI   = new Color(0xFF, 0x44, 0x44);
    public static final Color  BOJA_POZ_NEMCI     = new Color(0x44, 0x44, 0x44);
    public static final Color  BOJA_POZ_ITALIJANI = new Color(0x44, 0xCC, 0x44);
    public static final Color  BOJA_MUZEJA        = null;

    // Stringovi
    public static final String TEXT_OBILAZI         = "\u041e\u0431\u0438\u043b\u0430\u0437\u0438";
    public static final String TEXT_OBISAO          = "\u041e\u0431\u0438\u0448\u0430\u043e";
    public static final String TEXT_ODMARA          = "\u041E\u0434\u043C\u0430\u0440\u0430";
    public static final String TEXT_ODMORIO         = "\u0421\u043F\u0440\u0435\u043C\u0430\u043D";
    public static final String TEXT_GRUPA_ENGLEZI   = "\u0413\u0440\u0443\u043f\u0430\u0020\u0415\u043d\u0433\u043b\u0435\u0437\u0430";
    public static final String TEXT_GRUPA_NEMCI     = "\u0413\u0440\u0443\u043f\u0430\u0020\u041d\u0435\u043c\u0430\u0446\u0430";
    public static final String TEXT_GRUPA_ITALIJANI = "\u0413\u0440\u0443\u043f\u0430\u0020\u0418\u0442\u0430\u043b\u0438\u0458\u0430\u043d\u0430";
    public static final String TEXT_MUZEJ           = "\u041c\u0443\u0437\u0435\u0458 \"Louvre\"";

    private class UtilThread extends SimulationThread {

        private SimulationContainer odmara;

        protected UtilThread(String name, Color color, SimulationContainer klupa) {
            super(name, color);
            odmara = klupa;
        }

        protected void odmara() {
            setContainer(odmara);
            setText(TEXT_ODMARA);
            work(DUZINA_ODMARANJA, 2 * DUZINA_ODMARANJA);
            setText(TEXT_ODMORIO);
        }

        protected void obilazi() {
            setContainer(obilazi);
            setText(TEXT_OBILAZI);
            work(DUZINA_OBILASKA, 2 * DUZINA_OBILASKA);
            setText(TEXT_OBISAO);
        }
    }

    // Glavni program
    public static void main(String[] a) {
        new Louvre();
    }

    // Stanja
    private SimulationContainer obilazi = new SimulationContainer(TEXT_MUZEJ, BOJA_MUZEJA, SimulationContainerLayout.BOX);
    private SimulationContainer odmaraEnglez = new SimulationContainer(TEXT_GRUPA_ENGLEZI, BOJA_POZ_ENGLEZI, SimulationContainerLayout.BOX);
    private SimulationContainer odmaraNemac = new SimulationContainer(TEXT_GRUPA_NEMCI, BOJA_POZ_NEMCI, SimulationContainerLayout.BOX);
    private SimulationContainer odmaraItalijan = new SimulationContainer(TEXT_GRUPA_ITALIJANI, BOJA_POZ_ITALIJANI, SimulationContainerLayout.BOX);
    private SimulationContainer stajaliste = new SimulationContainer(SimulationContainerLayout.ROW, odmaraNemac, odmaraItalijan, odmaraEnglez);
    private SimulationContainer sve = new SimulationContainer(SimulationContainerLayout.COLUMN, stajaliste, obilazi);

    public Louvre() {

        // Create frame
        SimulationPanel panel = new SwingSimulationPanel(sve);
        SimulationFrame frame = SimulationFrame.create("Louvre", panel, new NoAnimationPanel());
        frame.display();

        // Create threads
        for (int i = 1; i <= BROJ_DJAKA; i++) {
            new Englez(i).start();
            new Nemac(i).start();
            new Italijan(i).start();
        }
    }
}