and since you make the counter be based off of a i++ type variable it can go on indefinatly you could probably insert it through
for i>= 0 i++{
i++
}
RandomGuy wrote ...
2023/3/21
How to remove Bullet from world
RandomGuy wrote...
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
/**
* Write a description of class Bullet here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Bullet extends Actor
{
/**
* Act - do whatever the Bullet wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public Bullet()
{
}
public void act()
{
movement();
if (isAtEdge())
{
collidesWithZombie(); getWorld().removeObject(this);
}
}
private boolean collidesWithZombie() {
if ( ! isTouching(Zombies.class)) return false;
{ Greenfoot.playSound("Gunshot.mp3");
removeTouching(Zombies.class);
((Counter)getWorld().getObjects(Counter.class).get(0)).add(1);
return true;
}
}
private void movement()
{
move(6);
if (isAtEdge())
{
World world = getWorld();
if(world != null)
{
world.removeObject(this);
return;
}
}
}
private void repeat()
{
}
}
public void act() {
move(6);
if (isAtEdge() || collidesWithZombie()) getWorld().removeObject(this);
}
Spock47 wrote...
RandomGuy wrote...
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
/**
* Write a description of class Bullet here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Bullet extends Actor
{
/**
* Act - do whatever the Bullet wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public Bullet()
{
}
public void act()
{
movement();
if (isAtEdge())
{
collidesWithZombie(); getWorld().removeObject(this);
}
}
private boolean collidesWithZombie() {
if ( ! isTouching(Zombies.class)) return false;
{ Greenfoot.playSound("Gunshot.mp3");
removeTouching(Zombies.class);
((Counter)getWorld().getObjects(Counter.class).get(0)).add(1);
return true;
}
}
private void movement()
{
move(6);
if (isAtEdge())
{
World world = getWorld();
if(world != null)
{
world.removeObject(this);
return;
}
}
}
private void repeat()
{
}
}
public void act() {
move(6);
if (isAtEdge() || collidesWithZombie()) getWorld().removeObject(this);
}
You have removed the "movement" method, right?
Ok, it says that the actor has already been removed.
So, two possibilities to deal with it:
A. Find out why this happens: Where does the bullet get removed?
- Is there any other place (except line 24) in the class Bullet where "getWorld().removeObject(this)" is called, too?
- Is there in any other class code to remove a bullet from the world, e.g. "getWorld().removeObject(bullet)"?
B. Preventing the source code from being executed when the actor is already gone (without understanding why it happened):
I prefer option A (since it means that we also understand why the problem occured), but the choice is yours.
public void act() {
if (getWorld() == null) return;
move(6);
if (isAtEdge() || collidesWithZombie()) getWorld().removeObject(this);
}
RandomGuy wrote...
at Bullet.movement(Bullet.java:49)
at Bullet.act(Bullet.java:23)
public void act() {
move(6);
if (isAtEdge() || collidesWithZombie()) getWorld().removeObject(this);
}
RandomGuy wrote...
<< Quote Omitted >>
I got an errorenvxity wrote...
<< Quote Omitted >>
i think you have to make the counter onto a varriable like i++ and make the boolean public so that way the counter can access itRandomGuy wrote...
So I got the following:
<< Error Trace Omitted >>danpost wrote...
RandomGuy wrote...
<< Quote Omitted >>
I got an errordanpost wrote...
RandomGuy wrote...
When I tried this it didn't work. What errors are there?import greenfoot.*;
public class Bullet extends Actor
{
public void act() {
move(6);
if (isAtEdge() || collidesWithZombie()) getWorld().removeObject(this);
}
private boolean collidesWithZombie() {
if ( ! isTouching(Zombies.class)) return false;
Greenfoot.playSound("Gunshot.mp3");
removeTouching(Zombies.class);
((Counter)getWorld().getObjects(Counter.class).get(0)).add(1);
return true;
}
}
danpost wrote...
RandomGuy wrote...
Wait so should I use this code?So,could you maybe send an edited version of my code.
I may not have understood what to do?
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