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Author: davedes (posted 2012-07-18 23:24:40, viewed 176 times)

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package slicktests;

import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.AngelCodeFont;
import org.newdawn.slick.AppGameContainer;
import org.newdawn.slick.BasicGame;
import org.newdawn.slick.Color;
import org.newdawn.slick.Font;
import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.Image;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.geom.Shape;
import org.newdawn.slick.geom.Transform;
import org.newdawn.slick.gui.TextField;
import org.newdawn.slick.opengl.renderer.Renderer;
import org.newdawn.slick.opengl.renderer.SGL;

public class FillRateTest extends BasicGame {

    static final int WIDTH = 800;
    static final int HEIGHT = 600;
    
   FillRateTest() { super("Particles!"); }
    public static void main(String[] args) throws SlickException {
       //quick optimization
       Renderer.setRenderer(Renderer.VERTEX_ARRAY_RENDERER);
        new AppGameContainer(new FillRateTest(), WIDTH, HEIGHT, false).start();
    }
    
    Font font;
    Image sprite;
    int ballCount = 1000; //CHANGE THIS VALUE
    Ball[] balls = new Ball[100000];
    
   public void init(GameContainer container) throws SlickException {
      sprite = new Image("res/small.png", false, Image.FILTER_NEAREST);
      //use the following for a scaled instance
      //sprite = sprite.getScaledCopy(256, 256);

      for (int i=0; i<balls.length; i++) {
         balls[i] = new Ball();
      }
      container.setShowFPS(false);
      container.setClearEachFrame(false);
   }
   
   
   public void render(GameContainer container, Graphics g) throws SlickException {
      g.clear();
      sprite.startUse();
      for (int i=0; i<ballCount; i++) {
         sprite.drawEmbedded(balls[i].x, balls[i].y, sprite.getWidth(), sprite.getHeight());
      }
      sprite.endUse();
      Display.setTitle(ballCount+" "+container.getFPS());
   }


   public void update(GameContainer container, int delta)
         throws SlickException {
      for (int i=0; i<ballCount; i++) {
         balls[i].update(delta);
      }
   }
   
   public void keyPressed(int key, char c) {
      if (c=='a') {
         ballCount -= 500;
      } else if (c=='q') {
         ballCount += 500;
      }
   }
   
   class Ball {
      
      float x, y;
      float vx = .03f;
      float vy = .03f;
      
      Ball() {
         x = (float)Math.random()*WIDTH;
         y = (float)Math.random()*HEIGHT;
      }
      
      public void update(long delta) {
         x += vx * delta;
         y += vy * delta;
         
         if(x+sprite.getWidth() >= WIDTH) {
            x = WIDTH-sprite.getWidth()-1;
            vx = -vx;
         }
         else if(x <= 0) {
            x = 1;
            vx = -vx;
         }
         
         if(y+sprite.getHeight() >= HEIGHT) {
            y = HEIGHT-sprite.getHeight()-1;
            vy = -vy;
         }
         else if(y <= 0) {
            y = 1;
            vy = -vy;
         }
      }
   }

}





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