From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../hjp5/examples/SkyscraperApplet.java            | 185 +++++++++++++++++++++
 1 file changed, 185 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java b/Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java
new file mode 100644
index 0000000..ad39822
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java	
@@ -0,0 +1,185 @@
+/* SkyscraperApplet.java */
+
+import java.awt.*;
+import java.util.*;
+import java.applet.*;
+
+class Skyscraper
+{
+  public int x;
+  public int y;
+  public int width;
+  public int height;
+  int        wndcntx;
+  int        wndcnty;
+  boolean    blinkon = false;
+
+  Skyscraper(int x, int y)
+  {
+    this.x = x;
+    this.y = y;
+    this.width = (int)(30*(0.5+Math.random()));
+    this.height = (int)(100*(0.5+Math.random()));
+    wndcntx = (width-4)/5;
+    wndcnty = (height-4)/5;
+  }
+
+  void LightEvent(Graphics g)
+  {
+    double rnd  = Math.random();
+    int    xwnd = (int)(Math.random()*wndcntx);
+    int    ywnd = (int)(Math.random()*wndcnty);
+    if (blinkon) {
+      g.setColor(Color.black);
+      g.fillRect(x+width/2,y-height-20,2,2);
+      blinkon = false;
+    }
+    if (rnd >= 0.9) {
+      blinkon = true;
+      g.setColor(Color.red);
+      g.fillRect(x+width/2,y-height-20,2,2);
+    } else if (rnd >= 0.7) {
+      g.setColor(Color.black);
+      g.fillRect(x+2+xwnd*5,y-height+2+ywnd*5,2,2);
+    } else {
+      g.setColor(Color.yellow);
+      g.fillRect(x+2+xwnd*5,y-height+2+ywnd*5,2,2);
+    }
+  }
+}
+
+public class SkyscraperApplet
+extends Applet
+implements Runnable
+{
+  //Membervariablen
+  Thread th;
+  Vector v = new Vector();
+  AudioClip thunder;
+  boolean running;
+
+   //Parameter
+  int    DELAY;
+  float  FLASH;
+  String THUNDER;
+
+  public void init()
+  {
+    Skyscraper house;
+    int x = 5;
+
+    //Häuser erzeugen
+    while (this.getSize().width-x-1 >= 30) {
+      house = new Skyscraper(x,this.getSize().height-10);
+      v.addElement(house);
+      x += house.width + 5;
+    }
+    setBackground(Color.black);
+
+    //Parameter einlesen
+    try {
+      DELAY = Integer.parseInt(getParameter("delay"));
+    } catch (NumberFormatException e) {
+      DELAY = 75;
+    }
+    try {
+      FLASH = (new Float(getParameter("flash"))).floatValue();
+    } catch (NumberFormatException e) {
+      FLASH = 0.01F;
+    }
+    THUNDER = getParameter("thunder");
+    if (THUNDER != null) {
+      thunder = getAudioClip(getCodeBase(),THUNDER);
+    }
+    System.out.println("DELAY = "+DELAY);
+    System.out.println("FLASH = "+FLASH);
+    System.out.println("THUNDER = "+THUNDER);
+  }
+
+  public void start()
+  {
+    if (th == null) {
+      running = true;
+      th = new Thread(this);
+      th.start();
+    }
+  }
+
+  public void stop()
+  {
+    if (th != null) {
+      running = false;
+      th = null;
+    }
+  }
+
+  public void run()
+  {
+    while (running) {
+      repaint();
+      try {
+        Thread.sleep(DELAY);
+      } catch (InterruptedException e) {
+        //nothing
+      }
+    }
+  }
+
+  public void update(Graphics g)
+  {
+    paint(g);
+  }
+
+  public void paint(Graphics g)
+  {
+    int i;
+    Skyscraper house;
+
+    i = (int)Math.floor(Math.random()*v.size());
+    house = (Skyscraper)v.elementAt(i);
+    house.LightEvent(g);
+    if (Math.random() < FLASH) {
+      Lightning(g,house.x+10,house.y-house.height);
+    }
+  }
+
+  public void Lightning(Graphics g, int x, int y)
+  {
+    Vector poly = new Vector();
+    int dx, dy, i, polysize;
+
+    thunder.play();
+    //Blitzpolygon berechnen
+    poly.addElement(new Point(x,y));
+    polysize = 1;
+    while (y > 10) {
+      dx = 10 - (int)(Math.floor(Math.random()*20));
+      dy = - (int)(Math.floor(Math.random()*20));
+      x += dx;
+      y += dy;
+      poly.addElement(new Point(x,y));
+      ++polysize;
+    }
+    //Blitzvector in Koordinaten-Arrays umwandeln
+    int[] xpoints = new int[poly.size()];
+    int[] ypoints = new int[poly.size()];
+    for (i = 0; i < polysize; ++i) {
+      Point p = (Point)poly.elementAt(i);
+      xpoints[i] = p.x;
+      ypoints[i] = p.y;
+    }
+    //Blitz zeichnen
+    for (i = 0; i <= 1; ++i) {
+      g.setColor(Color.white);
+      g.drawPolyline(xpoints, ypoints, polysize);
+      try {
+        Thread.sleep(20);
+      } catch (InterruptedException e) {}
+      g.setColor(Color.black);
+      g.drawPolyline(xpoints, ypoints, polysize);
+      try {
+        Thread.sleep(20);
+      } catch (InterruptedException e) {}
+    }
+  }
+}
\ No newline at end of file
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