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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java | |
| download | Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.gz Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.bz2 | |
Diffstat (limited to 'Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java')
| -rw-r--r-- | Master/Reference Architectures and Patterns/hjp5/examples/SkyscraperApplet.java | 185 |
1 files changed, 185 insertions, 0 deletions
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) {}
+ }
+ }
+}
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