This site requires JavaScript, please enable it in your browser!
Greenfoot back
Twitter Twitter.hover
andrewchin
andrewchin wrote ...

2019/10/10

Moving HP bar

andrewchin andrewchin

2019/10/10

#
?
1
2
3
4
int num = 19 -hp;
                     
                    hpbar hpbar = (hpbar) getWorld().getObjects(hpbar.class).get(0);
        hpbar.setImage(num+".gif");
I have a HP bar where i change the image after each bit of damage is taken. However when the actor is in the process of moving (the HP bar moves under it), it shows the initial image. Any tips?
danpost danpost

2019/10/10

#
andrewchin wrote...
<< Code Omitted >> I have a HP bar where i change the image after each bit of damage is taken. However when the actor is in the process of moving (the HP bar moves under it), it shows the initial image. Any tips?
You will probably have to show the entire class codes (at least, to start with).
andrewchin andrewchin

2019/10/10

#
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.util.*;
 
 
public class protag extends Actor
{
    int powercount = 0;
    int ammo = 3;   
    int hp = 18;
    GifImage gifImage = new GifImage("char 1.gif");
    int speed = 3;
 
    public void destroyEnemies()
   {
       //"Enemy" can be any class that you want the bullet to destroy.
       Actor enemy = getOneIntersectingObject(tree.class);
       if(enemy != null) {
            getWorld().removeObject(enemy);
            getWorld().removeObject(this);
       }
   }
    public void checkFire()
{
   if(Greenfoot.isKeyDown("space")) {
       ammo = ammo - 1;
       if(ammo <= 0){
 
           ammo = 3;
        }
   }
}
        public void controls()
    {
        int speed = 3;
 
   
        if(Greenfoot.isKeyDown("a")){
            setLocation(getX() - speed, getY());
            getWorld().removeObjects(getWorld().getObjects(hpbar.class));
            getWorld().addObject(new hpbar(), getX() - speed, getY() + 45);
        }
        if(Greenfoot.isKeyDown("d")){
            setLocation(getX() + speed, getY());
            getWorld().removeObjects(getWorld().getObjects(hpbar.class));
            getWorld().addObject(new hpbar(), getX()+speed, getY() + 45);
 
    }
     
    }
    public void act()
    {  
        int num = 19 -hp;
                     
                    hpbar hpbar = (hpbar) getWorld().getObjects(hpbar.class).get(0);
        hpbar.setImage(num+".gif");
                 
     
                     
                controls();
                setImage(gifImage.getCurrentImage());
                checkFire();
                destroyEnemies();
     
                if(hp<=0){
                    World W = getWorld();
 
                    W.removeObject(this);
                    W.removeObjects(W.getObjects(hpbar.class));
 
                    return;
                }
        if(isTouching(bomb.class)){
            hp = hp - 1;
            Actor bomb = getOneIntersectingObject(bomb.class);
            getWorld().removeObject(bomb);
 
             
        }
    }   
}
danpost danpost

2019/10/10

#
I am not sure why you do not get an error on line 55. I would think it needs to be:
?
1
hpbar.setImage(""+num+".gif");
Out of curiosity, are your hpbar images animated? Just wondering because of the gif suffix. Please provide hpbar class codes.
You need to login to post a reply.