Living spawn events. (1.12.2)

[vova7865]

I have this code:

package com.vova7865.essencecraft;

import java.util.UUID;

import com.mojang.authlib.GameProfile;

import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.server.MinecraftServer;
import net.minecraft.world.World;
import net.minecraft.world.WorldServer;
import net.minecraftforge.common.DimensionManager;
import net.minecraftforge.common.util.FakePlayer;
import net.minecraftforge.event.entity.living.LivingSpawnEvent;
import net.minecraftforge.fml.common.Mod.EventBusSubscriber;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;



@EventBusSubscriber
public class EventHandler {
	@SubscribeEvent
	public void livingSpawn(LivingSpawnEvent event) {
		if(event.getEntityLiving().toString().contains("Guardian")) {
			EntityLiving living = (EntityLiving) event.getEntityLiving();
			World world = event.getWorld();
			WorldServer serverWorld = DimensionManager.getWorld(0);
			GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "FakePlayer");
			FakePlayer fakePlayer = new FakePlayer(serverWorld, gameProfile);
			MinecraftServer minecraftServer = fakePlayer.mcServer;
			String playerNames[] = minecraftServer.getOnlinePlayerNames();
			String firstPlayerName = playerNames[0];
			EntityPlayer player = world.getPlayerEntityByName(firstPlayerName);
			double x = player.posX;
			double y = player.posY;
			double z = player.posZ;
			living.attemptTeleport(x, y, z)
		}
	}
}

So when the guardians spawn, they teleport to me. They do, but the same guardians are teleported to me multiple times, so I think that LivingSpawnEvent is fired not only when they spawn.

Anyone knows how can I do some code only when the mob spawns?

[Draco18s]

The LivingSpawnEvent has sub-events IIRC.

[vova7865]

So how can I subscribe to them?

[Draco18s]

livingSpawn(LivingSpawnEvent.NameOfSubEvent event)

[vova7865]

Thanks! Another question: do ElderGuardians fire this event when they spawn in the monuments?

[Matryoshika]

Mobs spawned by the world & mobs spawned by spawners eventually pass through LivingSpawnEvent#checkSpawn before actually getting spawned.
And yes, all children of LivingSpawnEvent will be given to you unless a specific one is stated.

 

Btw, your whole "create a fake-player just to get the server" is quite redundant. Just call World::getMinecraftServer and be done with it.
Creating FakePlayers is dangerous if you don't also make sure to remove them when the world needs to unload, or it's not gonna get unloaded, because the "player" is still in there.

Edited January 11, 2018 by Matryoshika