Bukkit

Are you able to control the Experience given? And are you able to make the Experience work for heroes?

@irdoom1337

It certainly is Multiverse compatible, works great on my Multiverse server.

Make certain that you have proper casing on your letters, capitalization should match the world's folder name I think. (Is the world folder in your server named 'Hueco_Mundo'? Or does it use a space, or noncapitalized letters?)
I extracted your exact code that you pasted, made a dummy world named Hueco_Mundo on my server to test it, changed the 'if_in_world' to 'if_world' and let it run. Seemed to function perfectly for me.

<event if_mob="zombie" if_world="Hueco_Mundo" if_percent="below 15" action="a1 + a2">
  <linked_action name="a1" action="cancel_event"/>
  <linked_action name="a2" action="spawn" sub="mob" mob="giant"/>
</event>

I personally dislike your code though. I'm not sure which way is more proper, but I prefer to structure mine like this instead:

<event>
   <linked_action name="stopevent" action="cancel_event"/>
   <linked_action name="giantspawn" action="spawn" sub="mob" mob="giant"/>
   <action>
      <entry if_mob="zombie" if_world="Hueco_Mundo" if_percent="below 15" action="stopevent + giantspawn"/>
   </action>
</event>

Then you can add more linked_actions at the top as you need them, and add more <action>s and <entry>s as you need them as well. I've also named the linked_actions more specifically, so I can know exactly what my code is trying to do when I look back at it later.

Edit: It might be worth mentioning that you can only have one <event></event> per text file. More than one will cause issues.

@BlueDwarf

reply thanks. nvm it still doesn't work i think it is not multiverse compatible :/

Is there any way to force a mob spawn with an item in its hand, or armor on?

@irdoom1337

Try if_world="Hueco_Mundo" instead, if_in_world is not the condition you want.
I just tested that code and it works fine,

i used this code

<event if_mob="zombie" if_in_world="Hueco_Mundo" if_percent="below 15" action="a1 + a2">
  <linked_action name="a1" action="cancel_event"/>
  <linked_action name="a2" action="spawn" sub="mob" mob="giant"/>
</event>

and it didn't work (it does work for world "world" though). Will this plugin to work with world made with the Multiverse plugin or is something else wrong?

I think mobs are coded to not move at all when they are 30 blocks away. Except for zombies, in 1.6, which will be able to move when you're that far away.

For example, get some angry wolves, and run. When you hit 30 blocks, they stop following. They still stare at you, and will keep turning towards you, but they can't actually move anymore. Take a few steps towards them and they will resume following you.

I could be wrong about that, but I don't think a detection distance of over 30 blocks will work.

I need some help with the config. I need the distance that a mob notices a player set to 100 blocks and creepers to blow up every time they they come in contact with a block (except the one they are standing on).

@MelonCraftServer

I'm not 100% but try changing leaves in the second code to 18 and see if that works

The Citizens plugin with the Sentries add-in has a working fireball system, where the npcs can shoot fireballs directly at you. Perhaps you can ask them for help with the odd fireball behavior.

@coldandtired

Thanks for all the help. And thanks for making this plugin.

@coldandtired

:/ would it be possible replace %15 of zombies with giants or would i have to replace them all? if I have to replace them all can you tell me how to make it spawn on a timer? Is this the code for fireball? <event if_mob="giant" action="shoot" projectile="fireball" projectile_target="closest_player"/>

http://forums.bukkit.org/members/spazymcgee.90673881/ made a plugin for me that lets you shoot 5 fireballs at once so if you need help with the fireball code he might be able to help. (But then again I Know nothing about how hard it is to code this plugin so... ya)

what am i doing wrong here i want giants to spawn normally just like any other mob would. <event action="spawn" sub="mob" mob="giant" mob_name="Menos Grande" amount="20" if_y="1 to 40" if_world="Hueco_mundo"/>

I was also wondering if it would be possible to make giants shoot fireballs?

How do I change mob drops?