Hi. I am writting my final project (first experience with programming in Greenfoot), and I have some troubles. The first one is the scaling, I want that the Enemy class go from small to the normal size to make the animation to look like they are getting closer to the screen, but then becomes like pixel. The other trouble is that, when MCombi jumps, the enemy class has to move under MCombi, and if it doesn´t jump, all the enemys has to back a little bit. But it doesn´t happend with my code. Could you help me? Here is the code: (sorry for my engish)
Road Class
Enemy class
MCombi class
import greenfoot.*;
public class Road extends World
{
private boolean a=false;
public Road()
{
super(800, 600, 1);
addObject(new MCombi(),getWidth()/2,getHeight()-80);
setPaintOrder(MCombi.class,Enemy.class);
}
public void act()
{
if(!a)
{
addEnemy();
}else
{
}
}
public void addEnemy()
{
if(Greenfoot.getRandomNumber(100)<3)
{
addObject(new Enemy(),400,142);
}
}
}
import greenfoot.*;
import java.awt.Image;
public class Enemy extends Actor
{
private GreenfootImage c1 = new GreenfootImage("combi2.png");
private GreenfootImage c2 = new GreenfootImage("taxi.png");
private int d=5;
private int s=0;
private int f;
private int x;
private int y;
public Enemy()
{
int tcar = Greenfoot.getRandomNumber(2);
if( tcar == 0 ) {
setImage(c1);
f=120;
} else if( tcar == 1 ) {
setImage(c2);
f=100;
}
GreenfootImage img=getImage();
img.scale(d,d);
setImage(img);
}
private int n;
public void act()
{
Actor enemy=(Enemy)getOneIntersectingObject(Enemy.class);
if(enemy!=null)
{
getWorld().removeObject(this);
}
else
{
x=getX();
y=getY();
if(s==0)
{
n=Greenfoot.getRandomNumber(3);
s=1;
}
choseDirection(n);
getCombi();
setLocation(x,y);
grow();
if (getY()>=getWorld().getHeight()-5)
{
getWorld().removeObject(this);
}
}
}
public void choseDirection(int mov)
{
if(mov==0){
x=getX();
y=getY()+4;
}
else if(mov==1){
x=getX()+2;
y=getY()+4;
}
else if(mov==2){
x=getX()-2;
y=getY()+4;
}
}
public void grow()
{
if(d<=f){
d=d+2;}
if(d%5==0)
{
GreenfootImage img=getImage();
img.scale(d,d);
setImage(img);
}
}
public void getCombi()
{
Actor combi=(MCombi)getOneIntersectingObject(MCombi.class);
if (combi!=null)
{
retro();
}
}
public void retro()
{
if(n==0){
x=getX();
y=getY()-4;
}
else if(n==1){
x=getX()-2;
y=getY()-4;
}
else if(n==2){
x=getX()+2;
y=getY()-4;
}
}
}
import greenfoot.*;
public class MCombi extends Actor
{
private Enemy e;
private boolean y=false;
private double speed=0.0;
private double gravity=0.5;
public void act()
{
if(Greenfoot.isKeyDown("left")&&getX()>90)
{
setLocation(getX()-5,getY());
}
if(Greenfoot.isKeyDown("right")&&getX()<715)
{
setLocation(getX()+5,getY());
}
jump();
checkfall();
}
private int count;
public void jump()
{
if(Greenfoot.isKeyDown("space")&&!y&&count==0)
{
speed=-11.0;
y=true;
count++;
fall();
}
if(!Greenfoot.isKeyDown("space")){y=false; }
}
public void fall()
{
setLocation(getX(),(int)(getY()+speed));
speed=speed+gravity;
}
public void checkfall()
{
if(getY()>=getWorld().getHeight()-80){
speed=0.0;
count=0;
} else { fall();}
}
public void getEnemys()
{
Actor enemy=(Enemy)getOneObjectAtOffset(0,1,Enemy.class);
if (enemy!=null)
{
}
}
}
