I am attempting to create a mod, which so far is working well. In this mod I've created a class that extends Entity witch, and I am using events to intercept when a potion is being thrown by this new witch.
I tested it out in single player, in Minecraft, the entity for a potion is ThrownPotion, while in the code ThrownPotion doesn't exist and is instead EntityPotion (from what I can tell).
In game with command blocks I can execute this command and it works perfectly:
/summon ThrownPotion ~ ~2 ~ {Potion:{Count:1,id:373,Damage:16428,tag:{CustomPotionEffects:[{Id:20,Amplifier:0,Duration:200}]}}}
It was my belief that the same NBT structure should work for EntityPotion as well. Since I'm adding a wither potion effect I can't just set the damage, as id=20 is above the 15 allowed in the first 4 bits of the id, which define the potion effect, so I have to use custom potion effects. The problem is the nbt format isn't working. The following is the code:
@SubscribeEvent
public void onEntitySpawn(EntityJoinWorldEvent event)
{
Entity e = event.entity;
if(e instanceof EntityPotion)
{
EntityPotion ep = (EntityPotion)e;
if(ep.getThrower() instanceof ChargedWitch)
{
if(ep.getPotionDamage() != 32660) return;// Only alter the poison potion thrown by the witch
ep.setPotionDamage(16461); // If this line is here, potion becomes instant damage, is commented potion is still poison
// (proving nbt didn't work)
NBTTagCompound nbt = ep.getEntityData();
NBTTagCompound potion = nbt.getCompoundTag("Potion");
NBTTagCompound tag = new NBTTagCompound();
potion.setShort("id", (short) 373);
potion.setShort("Damage", (short) 16461);
potion.setByte("Count", (byte) 1);
tag.setTag("CustomPotionEffects", makePotion());
potion.setTag("tag", tag);
nbt.setTag("Potion", potion);
}
}
}
public NBTTagList makePotion() {
NBTTagList list = new NBTTagList();
NBTTagCompound potionType = new NBTTagCompound();
potionType.setByte("Id", (byte) Potion.wither.getId());
potionType.setByte("Amplifier", (byte) 0);
potionType.setInteger("Duration", 200);
potionType.setByte("Ambient", (byte) 0); //Not ambient
list.appendTag(potionType);
return list;
}
I'm unsure why this isn't working. I guess my main question is why is it ThrownPotion in game, but no sign of any "ThrownPotion" class in the project.
If it's not possible I can easily make my own potion entity, I know enough to do so, I've just never experienced this issue before with inconsistent NBT structures.
!EDIT: Changed topic title to fit the format most posts are using.
!!EDIT: Thanks for the help, for anyone else looking to add custom effects to Potion Entities but don't know how:
