I wanted to share custom data with the client for my mobs.

I first tried to send a custom packet but then I found this :

http://www.minecraftforge.net/forum/index.php/topic,1410.msg12341.html#msg12341

 

So I made my Entity implement IEntityAdditionalSpawnData :

/**
* @author Manchou
*
*/
public class EntityDarwinCreature extends EntityAnimal implements IEntityAdditionalSpawnData {

private long genome;

/**
 * @param par1World
 */
public EntityDarwinCreature(World world) {
	super(world);
                this.texture = "/net/darwin/darwinCreature.png";
                genome = 0;
}

// specific code

@Override
public void writeSpawnData(ByteArrayDataOutput data) {

	data.writeLong(genome);
	System.out.println("writeSpawnData "+genome);
}

@Override
public void readSpawnData(ByteArrayDataInput data) {

	genome = data.readLong();
	System.out.println("readSpawnData "+genome);
}

public void setGenome(long genome) {
	this.genome = genome;
}

}

 

And well, the methods write/readSpawnData() are never called.

I tried to make them spawn with an monsterPlacer and with a spawn rule:

	  EntityRegistry.addSpawn(EntityDarwinCreature.class, 20, 10, 10, EnumCreatureType.creature, 
				new BiomeGenBase[]{desert, beach, iceMountains, icePlains, taiga, taigaHills, desertHills, forest, forestHills, plains, extremeHills, extremeHillsEdge, jungle, jungleHills});

 

The mob spawns but the data is not shared.

I send my variable "genome" on each onUpdate() call. And well, it works. But it's a useless flood of packets.

Why the methods of IEntityAdditionalSpawnData are not called? Did I do something wrong? Is it a bug?

use dataWatchers like the VillagerMob does it a simple way to keep things updated and is sent with all other mob data.

I see your spawn registration, but I dont see your entity registration.

You mean that?

EntityRegistry.registerGlobalEntityID(EntityDarwinCreature.class, "Creature", ModLoader.getUniqueEntityId(), 0x880000, 0x00FF00);

Was referring to the tracking registration, but also dont use any ModLoader.* stuff, keep yourself as ModLoader free as possible.

use dataWatchers like the VillagerMob does it a simple way to keep things updated and is sent with all other mob data.

 

Thank you. That was what I need and more!

 

Was referring to the tracking registration, but also dont use any ModLoader.* stuff, keep yourself as ModLoader free as possible.

 

Dunno what's the tracking registration. I don't find how to have the method called, and as said above, I have another, better solution.

I know I shouldn't use ModLoader anymore and that's what I mostly do. But what's the method in Forge API to get a unique entity id?

Not needed.  In Forge Entities are per-mod, so just name them distinct in your own mod.