When I make a new ProtonWave, I hear the noise, but I never see it.
import greenfoot.*; // (World, Actor, GreenfootImage, and Greenfoot) /** * A proton wave that expands and destroys things in its path. * * @author Michael Kolling * @version 0.1 */ public class ProtonWave extends Actor { /** The damage this wave will deal */ private static final int DAMAGE = 30; /** How many images should be used in the animation of the wave */ private static final int NUMBER_IMAGES= 30; /** * The images of the wave. This is static so the images are not * recreated for every object (improves performance significantly). */ private static GreenfootImage[] images; private int imageCount = 0; /** * Create a new proton wave. */ public ProtonWave() { initializeImages(); setImage(images[0]); Greenfoot.playSound("proton.wav"); } /** * Create the images for expanding the wave. */ public static void initializeImages() { if(images == null) { GreenfootImage baseImage = new GreenfootImage("wave.png"); images = new GreenfootImage[NUMBER_IMAGES]; int i = 0; while (i < NUMBER_IMAGES) { int size = (i+1) * ( baseImage.getWidth() / NUMBER_IMAGES ); images[i] = new GreenfootImage(baseImage); images[i].scale(size, size); i++; } } } public void grow() { if (imageCount >= NUMBER_IMAGES) { getWorld().removeObject(this); } else { setImage(images[imageCount]); imageCount++; } } /** * Act for the proton wave is: grow and check whether we hit anything. */ public void act() { grow(); } }