Hallo,
getWorld().removeObjects(getWorld().getObjects(P1.class));
don´t work,
it don´t remove some of the P1.class
pls help.
I want to remove all objects from the class which are at the world.
kevkev wrote ...
2013/7/7
remove all objects of one class
The code you used seems to be right to me.
May some instances from other classes have the same image and so it looks like it didn't remove all objects of this class.
But to fix this bug it would be helpfull to know the code you are using.
Are you sure that some of the remaining objects are of the P1 class? Right click on those objects you thought should have been removed and select 'Inspect' from the options. At the top of the new window will be the class that the object belongs to.
yes, i am sure.
i use
P1 p1 = new P1();
this.getWorld().addObject(p1, 10, 10);
this.getWorld().addObject(this,10, 10);
and inspect tells p1 : P1
You should not be using this at all
and in what class is this code located?
this.getWorld().addObject(this,10, 10);
it is in the actor how put it down. and the same actor have the code which dosnt work :D
Could you post the whole code of this actor class?
That would make it much easyer to help you.
ok but it is on german but it is a easy code :D
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
/**
* Write a description of class Affe here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Affe extends GifActor
{
/**
* gehört noch zu GifActor
*/
public void addedToWorld(World world)
{
setImage("Actor.gif"); //You must use the setImage method and not just right click + setImage in the GUI.
}
/**
* Steuerung und Weltgeschwindigkeit
*/
public void act()
{
int punkte = 0;
Greenfoot.setSpeed(50); //Setzt Welt auf 50% Speed
super.act(); // Animation starten
if(Greenfoot.isKeyDown("d")) // d gedrückt nach rechts gehen
{
move(1);
}
if(Greenfoot.isKeyDown("a")) // a gedrückz nach links gehen
{
move(-1);
}
if(Greenfoot.isKeyDown("w")) // w gedrückt nach oben gehen
{
setLocation(getX(),getY() -1);
}
if(Greenfoot.isKeyDown("s")) // s gedrückt nach unten gehen
{
setLocation(getX(),getY() +1);
}
if(bananeAufFeld())
{
bananeAufnehmen();
punkte = punkte+1;
bananeSpawn();
}
if(falleAufFeld())
{
falleAufnehmen();
punkte = punkte-1;
}
if(punkte==1)
{
P1 p1 = new P1();
this.getWorld().addObject(p1, 10, 10);
this.getWorld().addObject(this,10, 10);
P1 p11 = new P1();
this.getWorld().addObject(p11, 10, 11);
this.getWorld().addObject(this,10, 11);
P1 p12 = new P1();
this.getWorld().addObject(p12, 10, 12);
this.getWorld().addObject(this,10, 12);
P1 p13 = new P1();
this.getWorld().addObject(p13, 10, 13);
this.getWorld().addObject(this,10, 13);
P1 p14 = new P1();
this.getWorld().addObject(p14, 10, 14);
this.getWorld().addObject(this,10, 14);
P1 p15 = new P1();
this.getWorld().addObject(p15, 10, 15);
this.getWorld().addObject(this,10, 15);
P1 p16 = new P1();
this.getWorld().addObject(p16, 10, 16);
this.getWorld().addObject(this,10, 16);
P1 p17 = new P1();
this.getWorld().addObject(p17, 11, 10);
this.getWorld().addObject(this,11, 10);
P1 p18 = new P1();
this.getWorld().addObject(p18, 12, 10);
this.getWorld().addObject(this,12, 10);
P1 p19 = new P1();
this.getWorld().addObject(p19, 13, 10);
this.getWorld().addObject(this,13, 10);
P1 p20 = new P1();
this.getWorld().addObject(p20, 14, 10);
this.getWorld().addObject(this,14, 10);
P1 p21 = new P1();
this.getWorld().addObject(p21, 14, 11);
this.getWorld().addObject(this,14, 11);
P1 p22 = new P1();
this.getWorld().addObject(p22, 14, 12);
this.getWorld().addObject(this,14, 12);
P1 p23 = new P1();
this.getWorld().addObject(p23, 14, 13);
this.getWorld().addObject(this,14, 13);
P1 p24 = new P1();
this.getWorld().addObject(p24, 14, 14);
this.getWorld().addObject(this,14, 14);
P1 p25 = new P1();
this.getWorld().addObject(p25, 14, 15);
this.getWorld().addObject(this,14, 16);
P1 p26 = new P1();
this.getWorld().addObject(p26, 14, 16);
this.getWorld().addObject(this,14, 16);
P1 p27 = new P1();
this.getWorld().addObject(p27, 13, 16);
this.getWorld().addObject(this,13, 16);
P1 p28 = new P1();
this.getWorld().addObject(p28, 12, 16);
this.getWorld().addObject(this,12, 16);
P1 p29 = new P1();
this.getWorld().addObject(p29, 11, 16);
this.getWorld().addObject(this,11, 16);
P1 p30 = new P1();
this.getWorld().addObject(p30, 11, 11);
this.getWorld().addObject(this,11, 11);
P1 p31 = new P1();
this.getWorld().addObject(p31, 11, 12);
this.getWorld().addObject(this,11, 12);
P1 p32 = new P1();
this.getWorld().addObject(p32, 11, 13);
this.getWorld().addObject(this,11, 13);
P1 p34 = new P1();
this.getWorld().addObject(p34, 11, 14);
this.getWorld().addObject(this,11, 14);
P1 p35 = new P1();
this.getWorld().addObject(p35, 11, 15);
this.getWorld().addObject(this,11, 15);
P1 p36 = new P1();
this.getWorld().addObject(p36, 12, 11);
this.getWorld().addObject(this,12, 11);
P1 p37 = new P1();
this.getWorld().addObject(p37, 12, 15);
this.getWorld().addObject(this,12, 15);
P1 p40 = new P1();
this.getWorld().addObject(p40, 13, 11);
this.getWorld().addObject(this,13, 11);
P1 p41 = new P1();
this.getWorld().addObject(p41, 13, 12);
this.getWorld().addObject(this,11, 12);
P1 p42 = new P1();
this.getWorld().addObject(p42, 13, 13);
this.getWorld().addObject(this,11, 13);
P1 p43 = new P1();
this.getWorld().addObject(p43, 13, 14);
this.getWorld().addObject(this,11, 14);
P1 p44 = new P1();
this.getWorld().addObject(p44, 13, 15);
this.getWorld().addObject(this,11, 15);
P2 i1 = new P2();
this.getWorld().addObject(i1, 12, 12);
this.getWorld().addObject(this,12, 12);
P2 i2 = new P2();
this.getWorld().addObject(i2, 12, 13);
this.getWorld().addObject(this,12, 13);
P2 i3 = new P2();
this.getWorld().addObject(i3, 12, 14);
this.getWorld().addObject(this,12, 14);
}
if(punkte==2)
{
getWorld().removeObjects(getWorld().getObjects(P1.class));
getWorld().removeObjects(getWorld().getObjects(P2.class));
}
if(jägerAufFeld())
{
Affe aktAffe = (Affe)this.getOneObjectAtOffset(0, 0, Affe.class);
if(aktAffe != null)
{
setLocation(65,40);
this.getWorld().removeObject(aktAffe);
setImage("GameOver.jpg");
}
}
}
}Why do you use this.getWorld().addObject(this,10, 10) ?
I think if the actor is already in the world that either sets his location or does nothing.
In both cases it isn't the best idea to use this like danpost already said.
But I don't see why the actors P1 and P2 aren't removed.
Probably they are removed and new ones are set into the world at the same time so it looks like they aren't removed.
Could you post the code for the methods bananeAufFeld, bananeAufheben, falleAufFeld, ...?
May the bug is to be found there.
Yeah, every act method the value of 'punkte' is reset to zero. I do not think you want that. You should declare that field outside of the method.
for exampel, the others are all the same
public boolean bananeAufFeld()
{
if (this.getOneObjectAtOffset(0, 0, Banane.class)!= null)
{
return true;
}
else
{
return false;
}
} public void bananeAufnehmen()
{
Banane aktBanane = (Banane)this.getOneObjectAtOffset(0, 0, Banane.class);
if(aktBanane != null)
{
this.getWorld().removeObject(aktBanane);
}
else
{
System.out.println("Hier ist keine Banane!");
}
}Yeah, every act method the value of 'punkte' is reset to zero. I do not think you want that. You should declare that field outside of the method.
that can be the problem^^ but in which part it must be than?You need to login to post a reply.