Solved Throwing A Potion?

Hi all!

I don't expect this to be a hard question, but how do you throw a splash potion? I tried having my plugin spawn a villager then use launchProjectile(ThrownPotion.class), thereafter removing the villager (I only want the potion to be thrown, not the entity that threw it). I got this error though:

Code:

java.lang.IllegalArgumentException: Projectile not supported
    at org.apache.commons.lang.Validate.notNull(Validate.java:203)
    at org.bukkit.craftbukkit.entity.CraftLivingEntity.launchProjectile(CraftLivingEntity.java:292)
    at com.github.thebiologist13.Spawner.spawnTheEntity(Spawner.java:888)
    at com.github.thebiologist13.Spawner.spawn(Spawner.java:339)
    at com.github.thebiologist13.Spawner.tick(Spawner.java:274)
    at com.github.thebiologist13.CustomSpawners$1.run(CustomSpawners.java:148)
    at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:126)
    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:512)
    at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
    at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
    at net.minecraft.server.ThreadServerApplication.run

Can villagers not throw potions?

Thanks!
~thebiologist13

 

ThrownPotion potion = (ThrownPotion)World.SpawnEntity(location, entityType.thrownpotion);

//set type of potion
//set velocity

 

How to set the Potion effect it will give?

 

Necropost? But edit the potion.getEffects() http://jd.bukkit.org/rb/apidocs/org/bukkit/entity/ThrownPotion.html

 

tried, but didn't work. Here's My Code:

ThrownPotion p = (ThrownPotion)player.launchProjectile(ThrownPotion.class);
p.getEffects().clear();

p.getEffects().add(new PotionEffect(PotionEffectType.HARM, 1, 0));

 

I forgot I posted this XD

I figured it out and this is how I do it now:

Code:java

World world = spawnLocation.getWorld(); //Gets the world of location to spawn.
PotionEffect effect = spawnType.getPotionEffectBukkit(); //Gets the potion effect.
PotionType type = PotionType.getByEffect(effect.getType()); //Creates a potion type
Potion p = new Potion(type);
int data = p.toDamageValue(); //Gets the damage value of the potion
 
//Now it gets complicated :P
//First I get the NMS world representation.
net.minecraft.server.v1_5_R2.World nmsWorld = ((CraftWorld) world).getHandle();
//And make a NMS entity potion.
EntityPotion ent = new EntityPotion(nmsWorld, spawnLocation.getX(), spawnLocation.getY(), spawnLocation.getZ(), new net.minecraft.server.v1_5_R2.ItemStack(373, 1, data));
//Then a NBTTagCompound for the custom data.
NBTTagCompound nbt = new NBTTagCompound();
 
ent.b(nbt); //Gets all the normal NBT tags
NBTTagCompound potionTag = nbt.getCompound("Potion"); //Potion tag of entity
NBTTagCompound tagTag = new NBTTagCompound();
if(potionTag == null) { //Makes sure it has the tag
potionTag = new NBTTagCompound();
potionTag.setShort("id", (short) 373); //Splash potion ID
potionTag.setShort("Damage", (short) data); //Data value from before.
potionTag.setByte("Count", (byte) 1); //Amount
tagTag.set("CustomPotionEffects", makePotion(effect)); //makePotion(PotionEffect) is below
} else {
tagTag = potionTag.getCompound("tag");
tagTag.set("CustomPotionEffects", makePotion(effect));
}
 
potionTag.setCompound("tag", tagTag); //Set the modified custom potion NBT to the compound
nbt.setCompound("Potion", potionTag); 
ent.a(nbt); //Apply the new NBT to the entity
 
nmsWorld.addEntity(ent); //Spawn the entity
return ent.getBukkitEntity();

Code:java

//This only supports 1 potion effect on the splash potion.
public NBTTagList makePotion(PotionEffect effect) { 
NBTTagList list = new NBTTagList();
NBTTagCompound potionType = new NBTTagCompound();
potionType.setByte("Id", (byte) effect.getType().getId());
potionType.setByte("Amplifier", (byte) effect.getAmplifier());
potionType.setInt("Duration", effect.getDuration());
potionType.setByte("Ambient", (byte) 0); //Not ambient
list.add(potionType);
return list;
}

This may not be the most efficient way to do this, but it works.

Hope I could help!
~thebiologist13