// sim.java  -- みんな大好き被害予想シミュレーション --
// Dr.DOTIMPACT 1998/6/23

import java.applet.Applet;
import java.awt.*;

public class sim extends Applet implements Runnable {

  // 表示系
  Thread ticker;
  Image buf;
  Graphics bufg;
  Button start, reset;
  Font button, disp;

  // 背景
  MediaTracker mt;
  Image back;
  Rectangle rect;

  // 変数
  boolean on, seq;
  int dia;

public void init() {
  ticker = null;

  on = false;
  seq = false;
  dia = 0;

  // 背景読み込み
  back = getImage(getDocumentBase(), "map2__.gif");
  mt = new MediaTracker(this);
  mt.addImage(back, 0);
  try {
    mt.waitForAll();
  } catch(InterruptedException e) {
    return;
  }
  rect = new Rectangle(0, 0, back.getWidth(this), back.getHeight(this));

  // バッファ
  buf = createImage(rect.width, rect.height);
  bufg = buf.getGraphics();

  // フォント
  button = new Font("Dialog", Font.PLAIN, 12);
  disp = new Font("Helvetica", Font.PLAIN, 18);

  // ボタン
  setLayout(null);
  start = new Button("Start");
  reset = new Button("Reset");
  start.reshape(405, 5, 40, 20);
  reset.reshape(405, 30, 40, 20);
  add(start);
  add(reset);
}
  
public void start() {
  if (ticker == null) {
    ticker = new Thread(this);
    ticker.start();
  }
}
  
public void stop() {
  if (ticker != null) {
    ticker.stop();
    ticker = null;
  }
}
public void run() {
  draw_buffer();
  while(true) {
    try {
      Thread.sleep(50);
    } catch(Exception e) {}
    if(seq) {
      dia++;
      if(dia >= 200) dia = 200;
      draw_buffer();
      repaint();
    }
  }
}

public boolean action(Event ev, Object what) {
  if(ev.target == start) {
    on = true;
    seq = true;
  }
  if(ev.target == reset) {
    on = false;
    seq = false;
    dia = 0;
    draw_buffer();
    repaint();
  }
  return true;
}

public void update(Graphics g) {
  paint(g);
}

public void paint(Graphics g) {
  g.drawImage(buf, 0, 0, this);
}

public void draw_buffer() {
  int i;

  //  背景の地図
  bufg.drawImage(back, 0, 0, this);
  
  // 被害範囲(何の？)
  if(on) {
    bufg.setColor(Color.red);
    bufg.fillOval(280 - dia/2, 100 - dia/2, dia, dia);
    bufg.fillOval(380 - dia/4, 150 - dia/4, dia/2, dia/2);
    bufg.fillOval(200 - dia/2, 220 - dia/2, dia, dia);
  }

  // 縮尺線らしきもの(雰囲気)
  bufg.setColor(Color.white);
  for(i = 0 ; i <= rect.width ; i = i + 100) {
    bufg.drawLine(i, 0, i, rect.height);
  }
  for(i = 0 ; i <= rect.height ; i = i + 100) {
    bufg.drawLine(0, i, rect.width, i);
  }

  // カウンタらしきもの(雰囲気)
  bufg.setFont(disp);
  bufg.drawString("scale : " + dia, 5, 20);
}
  
}