AOL File Library: 12,000 to 12,999/12000.zip/AOLDLs/Online-Tools/Java-Applets/JAVAAPPS.lzh/JAVAAPPS/WATER/WATER.EXE/Water.java

Java Source | 1996-05-20 | 11.3 KB | 390 lines

import java.awt.*;

import java.applet.Applet;



public class Water extends java.applet.Applet implements Runnable {

   Thread killme = null;

   ImageCanvas board;



public void init() {

   // setLayout() is a java.awt.Container member.  It sets the LayoutManager

   // for the container.  Without it, the ImagePanels would get different

   // relative positions when the viewer is resized.

   setLayout(new BorderLayout());



   // Place the ImageHelp at the top of the applet.

   ImageHelp imHelp = new ImageHelp();

   add("North", imHelp);



   // Place the ImagePanel at the center of the applet.

   ImagePanel ip = new ImagePanel(this, imHelp.getLabel());

   add("Center", ip);

   board = ip.getBoard();

}



public void run() {

   while (killme != null) {

      try {Thread.sleep(100);} catch (InterruptedException e){}



      board.tick();

   }

   killme = null;

}



public void start() {

   if (killme == null) {

      killme = new Thread(this);

      killme.start();

   }

}



public void stop() {

   killme = null;

}



}



class ImageHelp extends Panel {

   Label l;

   public ImageHelp() {

      setLayout(new GridLayout(2, 1));

      // Create a new label, centered in the panel

      add(new Label("Move the tuber using the arrow keys", Label.CENTER));

      l = new Label("Score: ");

      add(l);

   }



   public Label getLabel() {

      return l;

   }

}



class ImagePanel extends Panel {

   ImageCanvas board;



   public ImagePanel(Applet app, Label l) {

      // Set the layout so that it is one column full size of the panel

      //

      setLayout(new GridLayout(0, 1));



      board = new ImageCanvas(app, l);

      add(board);

    }



   public ImageCanvas getBoard() {

      return board;

   }

}



class ImageCanvas extends Canvas /*implements ImageObserver*/ {

   int banks[][] = new int [2][12];

   int xpos = 50, ypos = 50;

   int yOff = 0;

   int ySpeed = 1;

   Image im;

   Graphics gOff;

   Image imTuber;

   Image imFin;

   int xFins[] = new int[3];

   int yFins[] = new int[3];

   int xSpeedFin[] = new int[3];

   int nShoreTick = 0;

   int nScore = 0;

   Label labelScore;

   boolean fPaused = true;

   boolean fDead = false;

   Image imCactus;

   int xCactus[] = new int[4];

   int yCactus[] = new int[4];



   public ImageCanvas(Applet app, Label l) {

      labelScore = l;



      imTuber = app.getImage(app.getCodeBase(), "tuber.gif");

      imFin = app.getImage(app.getCodeBase(), "fin.gif");

      imCactus = app.getImage(app.getCodeBase(), "cactus.gif");



      initBoard();

   }



   void initBoard() {

      // Initialize the banks

      for (int i = 0; i < 12; i++) {

         for (int j = 0; j < 2; j++) {

            banks[j][i] = (int)(Math.random() * 30);

         }

      }



      // Initialize the cacti

      for (int i = 0; i < 4; i++)

         xCactus[i] = -999;



      // Initialize the sharks

      for (int i = 0; i < 3; i++)

         xFins[i] = -999;



      xpos = 100;

      ypos = 50;

      yOff = 0;

      ySpeed = 1;

      nShoreTick = 0;

      nScore = 0;

      fDead = false;

   }



   public void layout() {

      Rectangle r = bounds(); // @@@ Has this been set yet?

      im = createImage(r.width, r.height);

      gOff = im.getGraphics();

   }



   // @@@ Is this member necessary?

   public void update(Graphics g) {

      paint(g);

   }



   public void paint(Graphics g) {

      Rectangle r = bounds(); // @@@ Has this been set yet?

      paintApplet(gOff);

      g.drawImage(im, 0, 0, this);

   }



   public void paintApplet(Graphics g) {

    Rectangle r = bounds();

        g.setColor(Color.blue);

        g.fillRect(0, 0, r.width, r.height);

        // @@@ Can't use clearRect() 'cause I can't figure out how to set the background color...

//        g.clearRect(0, 0, r.width, r.height);



        // Draw the banks

        Polygon p1 = new Polygon();

        p1.addPoint(0, 0);

        Polygon p2 = new Polygon();

        p2.addPoint(r.width, 0);

        for (int i = 0; i < 12; i++) {

           p1.addPoint(banks[0][i], i * r.height / 10 - yOff);

           p2.addPoint(r.width - banks[1][i], i * r.height / 10 - yOff);

        }

        p1.addPoint(0, r.height);

        p1.addPoint(0, 0);

        p2.addPoint(r.width, r.height);

        p2.addPoint(r.width, 0);

        g.setColor(Color.yellow);

        g.fillPolygon(p1);

        g.fillPolygon(p2);



        // Draw the cacti

        for (int i = 0; i < 4; i++)

           if (xCactus[i] != -999) {

//              System.out.println("Drawing a cactus");

              g.drawImage(imCactus, xCactus[i], yCactus[i], this);

           }



        // Draw the sharks

        for (int i = 0; i < 3; i++)

           if (xFins[i] != -999)

              g.drawImage(imFin, xFins[i], yFins[i], this);



        // Draw the player

        g.drawImage(imTuber, xpos, ypos, this);



        // Display any status messages

        g.setColor(Color.white);

        if (fDead)

           g.drawString("Press space bar for new game", 50, 50);

        else if (fPaused)

           g.drawString("Press space bar to tube", 50, 50);

     }



   int leftbank(int y) {

      Rectangle r = bounds();

      int segment = (y + yOff) * 10 / r.height;

      return Math.max(banks[0][segment], banks[0][segment+1]);

   }



   int rightbank(int y) {

      Rectangle r = bounds();

      int segment = (y + yOff) * 10 / r.height;

      return r.width - Math.min(banks[1][segment], banks[1][segment+1]);

   }



   public synchronized boolean handleEvent(Event e) {

      switch (e.id) {

     case Event.KEY_ACTION:

     case Event.KEY_PRESS:

        switch (e.key) {

          case Event.UP:

              case 'k':

                if (ypos - 5 > 0 && !fPaused)

                   ypos -= 5;

        repaint();

        return true;

          case Event.DOWN:

              case 'j':

                if (ypos + 5 < bounds().height - 32 && !fPaused)

           ypos += 5;

        repaint();

        return true;

          case Event.RIGHT:

          case 'l':

                if (xpos + 5 < rightbank(ypos) - 32 && !fPaused)

                   xpos += 5;

        repaint();

        return true;

          case Event.LEFT:

              case 'h':

                if (xpos - 5 > leftbank(ypos) && !fPaused)

                   xpos -= 5;

        repaint();

        return true;

//              case 'z':

//                if (ySpeed > 0)

//                   ySpeed--;

//                return true;

//              case 'x':

//                if (ySpeed < 10)

//                   ySpeed++;

//                return true;

              case ' ':

                 if (fDead) {

                    initBoard();

                    fPaused = false;

                    labelScore.setText("Score: " + String.valueOf(nScore));

                 } else

                    fPaused = !fPaused;

                 return true;

          default:

        return false;

        }



      default:

        return false;

    }

    }



   // tick() is because I couldn't figure out if I made this class Runnable what

   // whould I do about start()&stop()

   public void tick() {

      if (fPaused)

         return;



      // Scroll the shore

      yOff += ySpeed;



      // Scroll the player

      if (ypos-ySpeed > 0) {

         ypos -= ySpeed;

      }



      if (xpos < leftbank(ypos))

         xpos = leftbank(ypos);

      else if (xpos > rightbank(ypos) - 32)

         xpos = rightbank(ypos) - 32;



      // Scroll the cactus

      for (int i = 0; i < 4; i++)

         if (xCactus[i] != -999) {

            yCactus[i] -= ySpeed;

            if (yCactus[i] < 0) {

//               System.out.println("Killing a cactus");

               xCactus[i] = -999;

            }

         }



      Rectangle rectPlayer = new Rectangle(xpos+4, ypos+4, 32-4, 32-4);

      Rectangle rectShark = new Rectangle();



      // Scroll the sharks

      for (int i = 0; i < 3; i++) {

         yFins[i] -= ySpeed;

         if (xFins[i] != -999 && (yFins[i] < 0 || xFins[i] < leftbank(yFins[i]))) {

            // Shark is off-screen.  Destroy.

//            System.out.println("Destroyed a shark");

            xFins[i] = -999;

         }

         if (xFins[i] != -999) {

            xFins[i] -= xSpeedFin[i] * ySpeed;



            // Did the shark hit the player?

            rectShark.reshape(xFins[i]+8, yFins[i]+8, 32-8, 32-8);

            if (rectPlayer.intersects(rectShark)) {

               fDead = true;

               fPaused = true;

            }

         }

      }



      // Update score, if on the bottom half of screen

      Rectangle r = bounds();

      if (ypos+yOff > r.height/2) {

         nScore += ySpeed;

         labelScore.setText("Score: " + String.valueOf(nScore));

      }



      // Do we need to generate another shore coordinate?

      if (yOff >= r.height/10) {

         yOff -= r.height/10;



         for (int i = 1; i < 12; i++) {

            banks[0][i-1] = banks[0][i];

            banks[1][i-1] = banks[1][i];

         }

//         banks[0][11] = banks[0][10] + 10;

//         banks[1][11] = banks[0][10] + 10;

         banks[0][11] = banks[0][10] + (int)(Math.random() * 20) - 7;

         banks[1][11] = banks[1][10] + (int)(Math.random() * 20) - 7;

         if (banks[0][11] < 0)

            banks[0][11] = 0;

         if (r.width - banks[1][11] < 100)

            banks[1][11] -= 64;

         if (banks[0][11] >= r.width)

            banks[0][11] = r.width-1;

         if (banks[1][11] >= r.width)

            banks[1][11] = r.width-1;

         if (banks[0][11] > banks[1][11]) {

            int i = banks[0][11];

            banks[0][11] = banks[1][11];

            banks[1][11] = i;

         }

         if (banks[0][11] + 64 > r.width - banks[1][11]) {

            banks[0][11] = r.width - banks[1][11] - 40;

            banks[1][11] -= 22;

         }



         // If necessary, generate a new shark

         for (int i = 0; i < 3; i++)

            if (xFins[i] == -999 && Math.random() < 0.2) {

               xFins[i] = r.width - banks[1][11] - 32;

               yFins[i] = 9 * r.height / 10;

               xSpeedFin[i] = (int)(Math.random() * 2) + 1;

//               System.out.println("Created a shark");

               break;

            }



         nShoreTick++;

         if (nShoreTick > 20) {

//            System.out.println("Finished level " + String.valueOf(ySpeed));

            nShoreTick = 0;

            banks[0][11] = 0;

            banks[1][11] = 0;

            if (ySpeed < 10)

               ySpeed++;

            }

      }



      // Add any needed cacti

      for (int i = 0; i < 4; i++)

         if (xCactus[i] == -999 && Math.random() < .02) {

//            System.out.println("Making a cactus");

            yCactus[i] = r.height;

            if (Math.random() < 0.5)

               xCactus[i] = (int)(Math.random() * banks[0][11]);

            else

               xCactus[i] = r.width - (int)(Math.random() * banks[1][11]);

         }



      repaint();

   }

}