lifesim.java

Autolife模型是一个能够进行“开放式进化”的人工生命系统。每个Agent模型采用可以变化规则表长度的有限自动机模型建模。一方面Agent可以进行自我繁殖

package lifetest;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.Vector;

import lifetest.World;
/**
 * Title:        LifeSim
 * Description:
 * Copyright:    Copyright (c) 2004
 * Company:      www.swarmagents.com
 * @author jake
 * @version 1.0
 */
class ViewCanvas extends Canvas
{
	Image image;
	Color obs_color;
	Color origin_color;
	Color back_color;
    Color end_color;
	boolean first;
	boolean reset;
    lifesim localworld;
	public ViewCanvas(Image img,lifesim world){

		super();
 		image = img;
		obs_color = Color.white;
		setBackground(Color.black);
		setForeground(Color.white);
		first = true;
		reset = false;
        localworld=world;

	}

	public ViewCanvas(lifesim world)	{

		super();
 		image = null;
        localworld=world;
 	}

	public void Clear() {

		reset = true;
		repaint();

	}


	public void paint(Graphics g) {
		localworld.localwd.repaint(g);
	}

	Graphics GetGra() {
		return this.getGraphics();
	}
}
public class lifesim extends Applet implements Runnable {
  boolean isStandalone = false;
  Thread runner;
  boolean running,First;
  int delay=1;
  //controls:
  ViewCanvas canvas=new ViewCanvas(this);
  Button btnStart=new Button("   Start   ");
  Button btnConfig=new Button("Config");
  Button btnStep=new Button("Step");
  Button btnShow=new Button("Curves");
  Button btnSave=new Button("Save");
  Choice choiceAgType=new Choice();
  Choice choiceDrawType=new Choice();
  Panel leftPanel=new Panel();
  Label lblTitle=new Label("Env Control Panel");
  Label lblObj=new Label("Objects:");
  Choice choiceObj=new Choice();
  Label lblShapeType=new Label("Shapes:");
  Choice choiceShapeType=new Choice();
  Label lblFillType=new Label("Fill type:");
  Choice choiceFill=new Choice();
  Label lblLineWidth=new Label("Line width:");
  Choice choiceLineWidth=new Choice();
  Label lblGValue=new Label("Gradiant value:");
  TextField txtGValue=new TextField();
  Scrollbar slbGradiant=new Scrollbar(Scrollbar.HORIZONTAL,1,1,0,1000);
  Label lblRanAdd=new Label("Ran food supply:");
  TextField txtRanAdd=new TextField();
  Scrollbar slbAddFood=new Scrollbar(Scrollbar.HORIZONTAL,1,1,0,1000);
  Label lblDynEnv=new Label("Dynamic Env:");
  Choice choiceDynEnv=new Choice();
	Button btnRestart=new Button("Restart");
//parameters for env panel:

  int objSelect=0;
  int shapeType=0;
  int fillType=0;
  int lineWidth=1;
  double gValue=0.00001;
  int gConstant=10000;
  boolean mousePressed=false;
  Point startPoint;
  Point endPoint;
  int interveneType=2;
  boolean haveSetup=false;

  //color constant
  static Color COLOR_BACK;
  static Color COLOR_LIFE;
  static Color COLOR_TAIL;
  static Color COLOR_GRASS;
  static Color COLOR_SEED;
  static Color COLOR_SELECT;
  World localwd;

  //DataBase dataBase;
  /**Get a parameter value*/
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**Construct the applet*/
  public lifesim() {
    COLOR_BACK=Color.black;
    COLOR_LIFE=Color.white;
    COLOR_TAIL=Color.red;
    COLOR_GRASS=Color.blue;
    COLOR_SEED=Color.green;
    COLOR_SELECT=Color.white;
	localwd=new World(this);
  }
  /**Initialize the applet*/
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception {
      setLayout(new BorderLayout());
      Panel pan=new Panel();
	//som envents handler
      canvas.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
      public void mouseDragged(MouseEvent e) {
        canvas_mouseDragged(e);
      }
    });
      txtGValue.addTextListener(new java.awt.event.TextListener() {
      public void textValueChanged(TextEvent e) {
        txtGValue_textValueChanged(e);
      }
    });
      txtRanAdd.addTextListener(new java.awt.event.TextListener() {
      public void textValueChanged(TextEvent e) {
        txtRanAdd_textValueChanged(e);
      }
    });

    //prepare for the controls
     add("South",pan);
      pan.add(btnStart);
      btnRestart.enable(false);
      pan.add(btnRestart);
      pan.add(btnConfig);
      pan.add(btnStep);
      pan.add(btnShow);
      //pan.add(btnSave);
      choiceAgType.addItem("No seeds");
      choiceAgType.addItem("Have seeds");
      pan.add(choiceAgType);
      choiceAgType.select(1);
	  localwd.agType=choiceAgType.getSelectedIndex();
		choiceDrawType.addItem("Don't draw seeds");
		choiceDrawType.addItem("Draw seeds");
		choiceDrawType.select(localwd.drawType);
		pan.add(choiceDrawType);
		
      leftPanel.setLayout(new GridLayout(15,1));
      leftPanel.add(lblTitle);
			txtRanAdd.setText(Integer.toString(localwd.FoodAddNum));
			slbAddFood.setValue(localwd.FoodAddNum);
			Panel panAdd=new Panel();
			panAdd.add(lblRanAdd);
			panAdd.add(txtRanAdd);
			leftPanel.add(panAdd);
			leftPanel.add(slbAddFood);
		
			leftPanel.add(lblDynEnv);
			choiceDynEnv.addItem("Random");
			choiceDynEnv.addItem("large circle");
			choiceDynEnv.addItem("circle");
			choiceDynEnv.addItem("helix ");
			choiceDynEnv.addItem("ring");
			choiceDynEnv.addItem("knot");
			choiceDynEnv.addItem("game of life");
			choiceDynEnv.addItem("fractal leaf");
			leftPanel.add(choiceDynEnv);
		
      
      leftPanel.add(lblObj);
      choiceObj.addItem("Food");
      choiceObj.addItem("Eraser");
      choiceObj.addItem("Select");

      leftPanel.add(choiceObj);
      leftPanel.add(lblShapeType);
	  choiceShapeType.addItem("Rectangle");
      choiceShapeType.addItem("Line");

      leftPanel.add(choiceShapeType);
      leftPanel.add(lblFillType);

      choiceFill.addItem("Solid");
      choiceFill.addItem("Gradiant");
      //choiceFill.addItem("Random");
      leftPanel.add(choiceFill);

		slbGradiant.setValue((int)(gConstant*gValue));
		txtGValue.setText(Double.toString(gValue));
		Panel panGValue=new Panel();
		panGValue.add(lblGValue);
		panGValue.add(txtGValue);
		leftPanel.add(panGValue);
		leftPanel.add(slbGradiant);

		leftPanel.add(lblLineWidth);
		for(int i=1;i<100;i++){
		  choiceLineWidth.addItem(Integer.toString(i));
		}
		choiceLineWidth.select(20);
		leftPanel.add(choiceLineWidth);

		
		
      add("West",leftPanel);

      this.add("Center",canvas);
		canvas.addMouseListener(new java.awt.event.MouseAdapter() {
		  public void mousePressed(MouseEvent e) {
			canvas_mousePressed(e);
		  }
		  public void mouseReleased(MouseEvent e) {
			canvas_mouseReleased(e);
		  }
		});
      //dataBase=new DataBase();
      First=true;
      reinit();
  }
  public void reinit(){
  	localwd.reinit();
  }
 	public Graphics getCanvasGraphics(){
 		return canvas.GetGra();
 	}
    public void start(){
	if (runner == null){
	  runner= new Thread(this);
	  runner.start();
	  running =false;
        }
    }

	public void stop()
	{
		if (runner!=null)
		{
			runner.stop();
			runner=null;
			running = false;
		}
	}
  public void run() {
  		if (First) {
			First = false;
            localwd.g=this.getCanvasGraphics();
		}

		while (true) {
			//canvas.reset=false;
                        if(running){
		 	  				localwd.process();
                          	showStatus("Model Cycle:"+Long.toString(localwd.modelTime));
                        }else{
                        	if(localwd.modelTime>0&&!btnStart.getLabel().equals("Continue"))btnStart.setLabel("Continue");
                        }
		 	try { Thread.sleep(delay);}
		 	catch (InterruptedException e) {
			}
		}
  }


  public void destroy() {
    //当结束程序的时候，把线程也结束，不运行这里可能会在网页上出错。
    if (runner!=null){
       running = false;
       runner.stop();
       runner=null;
    }