Anyone found a decent way to change mob speeds?

I've poured over the threads I can find (there is quite a few) of how to actually change a mobs speed, while still allowing it to move as it normal would and attack, just faster.

But trying to piece together the snippets of code from them, and mesh them into a working class seems beyond what I currently understand of some of the events and calls they are using to do it.

Does anyone have any examples of how to achieve this?
What I'm attempting to do is speed up zombies at night. which sounds simple...

But cant seem to get the part I need for once I find its night, and it a zombie....to actually speed him up

 

Untested, but looks much cleaner & simpler than anything else I have come across: http://forums.bukkit.org/threads/changing-an-entities-speed.75541/#post-1143618

 

hmm perhaps 'bb' is the wrong field?

I got:

Code:java

 
(snippet)
    static {
        entitySpeed.setAccessible(true);
    }
    @EventHandler
    public void SpeedMobs(CreatureSpawnEvent evt)
    {
        try {
            entitySpeed.set(((CraftEntity) evt.getEntity()).getHandle(), 0.6f);
        } catch (IllegalArgumentException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}
 

and it doesn't complain of any errors..

but the static field I initialize does:
(snippet)

Code:java

 
public class Lis implements Listener
{
private static Field entitySpeed = net.minecraft.server.Entity.class.getField("bb");
 

with: Unhandled exception, no such field.
I have both bukkit and craftbukkit in the jars
and I doing it wrong?

(to save from editing and loosing the code formatting)
even tried
net.minecraft.server.EntityLiving.class.getField("bb");

this is the whole class, remaking it to clean up my other code to do things out of it and make a starting base to work with:

Code:java

 
package me.dx.seasons.plugin;
 
import java.lang.reflect.Field;
 
import org.bukkit.craftbukkit.entity.CraftEntity;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.CreatureSpawnEvent;
 
public class test implements Listener
{
    private static Field entitySpeed = net.minecraft.server.EntityLiving.class.getField("bb");
    static {
        entitySpeed.setAccessible(true);
    }
    Main plugin;
    public test(Main plugin)
    {
        this.plugin = plugin;
    }
    @EventHandler
    public void SpeedMobs(CreatureSpawnEvent evt)
    {
        try {
            entitySpeed.set(((CraftEntity) evt.getEntity()).getHandle(), 0.6f);
        } catch (IllegalArgumentException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}
 

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

At least EntityLiving should have the 'bb' field (just looked at the repo), not sure about the entity class.

 

yea I've tried EntityLiving and Entity (both from net.minecraft.server, not bukkit) and both give me that error :\

I see it on the repo also in EntityLiving:
protected float bb = 0.7F;

and Entity.class has;
public Entity[] bb() {
return null;
}

so maybe Im calling it wrong? not sure.

 

It's nothing to do with Entity classes whatsoever, it's basically telling you that you got an exception type that needs to be caught somewhere.
Most reflection methods throw non-RuntimeExceptions on failure, so you have to catch them, which you can't do when directly assigning it to a declared field.

Put it in a method (or the static { }) initializer and surround it with try/catch, and you're good.

 

ahh thank you
thought I needed to initialize it outside the method..

so like so?

Code:java

 
package me.dx.seasons.plugin;
 
import java.lang.reflect.Field;
 
import org.bukkit.craftbukkit.entity.CraftEntity;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.CreatureSpawnEvent;
 
public class test implements Listener
{
    Main plugin;
    public test(Main plugin)
    {
        this.plugin = plugin;
    }
    @EventHandler
    public void SpeedMobs(CreatureSpawnEvent evt)
    {
        try {
            Field entitySpeed = null;
            try {
                entitySpeed = net.minecraft.server.EntityLiving.class.getField("bb");
            } catch (NoSuchFieldException | SecurityException e) {
                e.printStackTrace();
            }
            entitySpeed.setAccessible(true);
            entitySpeed.set(((CraftEntity) evt.getEntity()).getHandle(), 0.6f);
        } catch (IllegalArgumentException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}
 

Think this is best left alone, its too far beyond my knowledge without harassing people for more help
Tried all the ways above that I could think of, and getting errors on spawn..
even tried making my own SpeedZombie class, that extends EntityMonster..but get null exception, as Im not sure how to add my custom class to the server entity list

EDIT by Moderator: merged posts, please use the edit button instead of double posting.