In my game I got the class Player and a class Explosion. If the Player explodes I'll get this Error although the game should be stopped.
java.lang.IllegalStateException: Actor not in world. An attempt was made to use the actor's location while it is not in the world. Either it has not yet been inserted, or it has been removed.
at greenfoot.Actor.failIfNotInWorld(Actor.java:681)
at greenfoot.Actor.getObjectsInRange(Actor.java:900)
at Explosion.expand(Explosion.java:29)
at Explosion.act(Explosion.java:12)
at greenfoot.core.Simulation.actActor(Simulation.java:594)
at greenfoot.core.Simulation.runOneLoop(Simulation.java:552)
at greenfoot.core.Simulation.runContent(Simulation.java:215)
at greenfoot.core.Simulation.run(Simulation.java:205)
Explosion Class:
Player Class:
import greenfoot.*;
public class Explosion extends Actor
{
int range = 300;
int height;
int width;
int count=0;
public void act() {
count++;
if(count>10){
expand();
}
}
public void expand(){
height = (int)(this.getImage().getHeight()*1.2);
width = (int)(this.getImage().getWidth()*1.2);
if(width<range){
this.getImage().scale(width, height);
} else {
if(isTouching(Player.class)){
Player p = (Player)getOneIntersectingObject(Player.class);
p.gameOver();
}
getWorld().removeObjects(getObjectsInRange(range, Actor.class));
getWorld().removeObject(this);
}
}
}
import greenfoot.*;
import java.util.List;
public class Player extends Actor{
int speed = 3;
int hp = 100;
public int weapon = 1;
/* 1 = pistol
* 2 = Assault Rifle
* 3 = Sniper
* 4 = Laser
*/
int level = 1;
public int delay= 2000;
int wave = 1;
public void act()
{
delay++;
enemiesAlive();
checkKeypress();
MouseInfo mouse = Greenfoot.getMouseInfo();
if(mouse != null) {
setRotation((int)(180*Math.atan2(mouse.getY()-getY(),mouse.getX()-getX())/Math.PI));
}
pickWeapon();
enemiesAlive();
}
public void checkKeypress(){
int dx = 0;
int dy = 0;
if(Greenfoot.isKeyDown("W"))
{
dy -= speed;
}
if(Greenfoot.isKeyDown("S"))
{
dy += speed;
}
if(Greenfoot.isKeyDown("A"))
{
dx -= speed;
}
if(Greenfoot.isKeyDown("D"))
{
dx += speed;
}
if(Greenfoot.mouseClicked(null)||Greenfoot.isKeyDown("space"))
{
shoot();
}
setLocation(getX() + dx, getY() + dy);
}
public void pickWeapon() {
String key = Greenfoot.getKey();
if(isTouching(Pistol.class)&&(key != null && key.equals("f"))) {
removeTouching(Pistol.class);
weapon = 1; //changes to the Pistol
setImage("PlayerPistol.png");
} else if(isTouching(AR.class)&&(key != null && key.equals("f"))) {
removeTouching(AR.class);
weapon = 2; //changes to the AR
setImage("PlayerAR.png");
} else if(isTouching(Sniper.class)&&(key != null && key.equals("f"))) {
removeTouching(Sniper.class);
weapon = 3; //changes to the Sniepr
setImage("PlayerSniper.png");
}
}
public void shoot(){
int relTime = 0;
int dmg = 0;
int recoil = 0;
switch(weapon){
case 1: {
Pistol p = new Pistol();
relTime = p.getReloadTime();
dmg = 35;
recoil = 5;
} break;
case 2: {
AR ar = new AR();
relTime = ar.getReloadTime();
dmg = 33;
recoil = 15;
} break;
case 3: {
Sniper sniper = new Sniper();
relTime = sniper.getReloadTime();
dmg = sniper.getDmg();
recoil = 1;
}break;
}
if(delay>=relTime){
getWorld().addObject(new Bullet(getRotation()+(Greenfoot.getRandomNumber(recoil)-(recoil/2)),dmg),getX(), getY());
delay = 0;
}
}
public int getDmg(){
return 10;
}
public void takeDmg(int dmg){
hp = hp-dmg;
if(hp<=0){
gameOver();
}
}
public void enemiesAlive(){
if(getObjectsInRange(1200,Enemy.class).size()==0){
spawnEnemies();
}
}
public void spawnEnemies(){
world1 w1= (world1)getWorld();
Scoreboard sb = w1.getScoreboard();
sb.addScore(1);
wave++;
for(int i=0; i<=level*level/2;i++){
getWorld().addObject(new Skeleton(),Greenfoot.getRandomNumber(1200),Greenfoot.getRandomNumber(1200));
}
for(int i=0; i<=level+1;i++){
Zombie z= new Zombie();
getWorld().addObject(z,Greenfoot.getRandomNumber(1200),Greenfoot.getRandomNumber(1200));
}
for(int i=0; i<=level-4;i++){
getWorld().addObject(new Dragon(),Greenfoot.getRandomNumber(1200),Greenfoot.getRandomNumber(1200));
}
getWorld().addObject(new Barrel(),Greenfoot.getRandomNumber(1200),Greenfoot.getRandomNumber(1200));
level++;
getWorld().removeObjects(getObjectsInRange(150,Enemy.class));
}
public void gameOver(){
Greenfoot.stop();
getWorld().removeObjects(getObjectsInRange(1200, Actor.class));
GameOver gameOver = new GameOver(wave);
getWorld().addObject(gameOver, 600,600);
getWorld().removeObject(this);
}
}
