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  JavaGaming.org - Pastebin



Author: buddyBro (posted 2017-04-05 03:38:00, viewed 268 times)

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void begin() {
      int frame = 0;
      long beginTime = 0, endTime;
      while (true) {
         while (pause) {
            checkPause();
            wait(30);
         }

         painter.clear(); // painter is a custom class that extends JFrame

         // camera stuff
         camera.move(controller);
         camera.update(world.width, world.length, world.height);
         controller.setView(camera.angle, camera.orig(), camera.normal);

         // update everything (like move character, add particles, etc)
         world.update(terrain, controller);

         world.draw(painter, camera); // this calls painter.polygon a bunch of times to draw the scene on the canvas
         painter.repaint();
         checkPause();
         wait(10);
         endTime = System.nanoTime() + 1;
         if (endTime - beginTime > 1000000000L) {
            Painter.debugString[0] = "fps: " + frame + " ; paint surfaceCount: " + painter.surfaceCount + " ; paint drawCount: " + painter.drawCount;
            frame = 0;
            beginTime = endTime;
         }
         frame++;
      }
   }


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   Painter(int frameSize, int imageSize, Controller controller) {
      FRAME_SIZE = frameSize;
      IMAGE_SIZE = imageSize;
      canvasBuffer = new BufferedImage[BUFFER_COUNT];
      brushBuffer = new Graphics2D[BUFFER_COUNT];
      for (int i = 0; i < BUFFER_COUNT; i++) {
         canvasBuffer[i] = new BufferedImage(IMAGE_SIZE, IMAGE_SIZE, 1);
         brushBuffer[i] = (Graphics2D) canvasBuffer[i].getGraphics();
      }
      canvas = canvasBuffer[0];
      brush = brushBuffer[0];
      getContentPane().setSize(FRAME_SIZE, FRAME_SIZE);
      pack();
      borderSize = getHeight();
      setSize(FRAME_SIZE, FRAME_SIZE + borderSize);
      setLocationRelativeTo(null);
      addMouseListener(controller);
      addKeyListener(controller);
      addMouseMotionListener(controller);
      setDefaultCloseOperation(EXIT_ON_CLOSE);
      setVisible(true);
   }


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   void clear() {
      surfaceCount = 0;
      drawCount = 0;
      if (++buffer == BUFFER_COUNT)
         buffer = 0;
      canvas = canvasBuffer[buffer];
      brush = brushBuffer[buffer];
      brush.setBackground(Color.BLACK);
      brush.clearRect(0, 0, IMAGE_SIZE, IMAGE_SIZE);
   }


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   public void paint(Graphics graphics) {
      // these are just the debug strings printed at the top left corner
      brush.setColor(Color.WHITE);
      for (int i = 0; i < debugString.length; i++)
         brush.drawString(debugString[i], 25, 25 + 25 * i);
      for (int i = 0; i < outputString.length; i++)
         brush.drawString(outputString[i], 25, 650 + 25 * i);

      // draw from canvas to actual jframe
      graphics.drawImage(canvas, 0, borderSize, null);
   }


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   public void polygon(double[][] xy, double light, Color color, boolean frame) {
      if (xy != null) {
         surfaceCount++;
         for (int i = 0; i < xy[0].length; i++)
            if (xy[0][i] > -.5 && xy[0][i] < .5 && xy[1][i] < .5 && xy[1][i] > -.5) {
               drawCount++;
               int[][] xyScaled = Math3D.transform(xy, IMAGE_SIZE, IMAGE_SIZE / 2);
               if (frame) {
                  brush.setColor(Color.cyan);
                  brush.drawPolygon(xyScaled[0], xyScaled[1], xyScaled[0].length);
               } else {
                  setColor(light, color);
                  brush.fillPolygon(xyScaled[0], xyScaled[1], xyScaled[0].length);
               }
               return;
            }
      }
   }





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