RUMMAKER wrote...
you also don't need the if(getWorld() != null) thing in this case
KevinWelch2001 wrote ...
2013/11/16
bullet help
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Actually, that is not true; unless you put 'shotasteriod' at the end of the method (the check for 'getWorld() != null' must be placed between 'shotasteroid();' and 'if (atWorldEdge(){...}'.
ty a lot it works now
As an alternative, you could use this:
shotasteroid();
if (getWorld() != null && atWorldEdge())
{
// code processed when at world edge
}one more question this is my last how do I change the size of my bullet
As a third option, the class could be coded as follows:
import greenfoot.*;
public class Bullet extends Actor
{
public void act()
{
move(5);
if ( shotasteroid() || atWorldEdge() )
{
getWorld().removeObject(this);
}
}
public boolean shotasteroid()
{
Asteroid asteroid = getOneObjectAtOffset(2, 2, asteroid.class);
if(asteroid != null)
{
Greenfoot.playSound("Explosion.mp3");
getWorld().removeObject(asteroid);
return true;
}
return false;
}
public boolean atWorldEdge()
{
if(getX() < 10 || getX() > getWorld().getWidth() - 10)
return true;
if(getY() < 10 || getY() > getWorld().getHeight() - 10)
return true;
else
return false;
}
}
change the image you use for the bullet. or if you mean in game then use the scale method.
GreenfootImage i = getImage().scale(width, height); (maybe its height, width ... just check the documents)
setImage(i);
If you want the bullet to start at a different size and stay that size throughout its existence, then you would add a constructor to scale its image:
where '(n/d)' is a ratio of integers, as like ('2/3', '1/2', '3/4' or whatever).
public Bullet()
{
GreenfootImage image = getImage();
image.scale(image.getWidth()*(n/d), image.getHeight()*(n/d));
}ty
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