ERROR: SpawnEntityEvent MUST have a SpawnCause as the root!

desomond · May 30, 2016, 3:36am

Hi all,

Basically whenever I try and spawn in items from JEI sponge spits out an error at me.

Here is an example, thanks!

[23:30:01] [Server thread/ERROR] [Sponge/]: Error occurred while executing command 'give desomond thuttech:lift 64 1' for source EntityPlayerMP['desomond'/102087, l='world', x=38.17, y=113.00, z=-276.26]: SpawnEntityEvent MUST have a SpawnCause as the root! java.lang.IllegalArgumentException: SpawnEntityEvent MUST have a SpawnCause as the root! at com.google.common.base.Preconditions.checkArgument(Preconditions.java:125) ~[minecraft_server.1.8.9.jar:?] at org.spongepowered.api.event.impl.AbstractSpawnEntityEvent.init(AbstractSpawnEntityEvent.java:39) ~[AbstractSpawnEntityEvent.class:1.8.9-1890-4.1.0-BETA-1364] at org.spongepowered.api.event.impl.DropItemEvent$Dispense$Impl.<init>(Unknown Source) ~[?:?] at org.spongepowered.api.event.impl.DropItemEvent$Dispense$Factory.apply(Unknown Source) ~[?:?] at org.spongepowered.api.event.impl.DropItemEvent$Dispense$Factory.apply(Unknown Source) ~[?:?] at org.spongepowered.api.event.SpongeEventFactoryUtils.createEventImpl(SpongeEventFactoryUtils.java:81) ~[SpongeEventFactoryUtils.class:1.8.9-1890-4.1.0-BETA-1364] at org.spongepowered.api.event.SpongeEventFactory.createDropItemEventDispense(SpongeEventFactory.java:3600) ~[SpongeEventFactory.class:1.8.9-1890-4.1.0-BETA-1364] at org.spongepowered.common.event.CauseTracker.processSpawnEntity(CauseTracker.java:1071) ~[CauseTracker.class:1.8.9-1890-4.1.0-BETA-1364] at net.minecraft.world.World.spawnEntity(World.java:1276) ~[adm.class:?] at main.java.me.cuebyte.nexus.utils.ItemUtils.drop(ItemUtils.java:35) ~[ItemUtils.class:?] at main.java.me.cuebyte.nexus.commands.CommandGive.process(CommandGive.java:72) ~[CommandGive.class:?] at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:331) ~[SimpleDispatcher.class:1.8.9-1890-4.1.0-BETA-1364] at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:268) [SpongeCommandManager.class:1.8.9-1890-4.1.0-BETA-1364] at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:80) [bd.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:815) [lm.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:794) [lm.class:?] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:37) [ie.class:?] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:9) [ie.class:?] at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:115) [PacketUtil.class:1.8.9-1890-4.1.0-BETA-1364] at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$0(SourceFile:39) [fh$1.class:?] at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [fh$1.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_91] at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_91] at net.minecraft.util.Util.func_181617_a(SourceFile:44) [g.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:660) [MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:344) [ko.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:605) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:481) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_91]

desomond · May 30, 2016, 5:11am

Oh whoops wrong section! Saw the one before and thought this was the right one. Could you move it for me please? Thanks!

12AwsomeMan34 · May 30, 2016, 5:11am

It’s due to this line in nexus:

github.com

maxnitschke/nexus-sponge/blob/master/src/main/java/me/cuebyte/nexus/utils/ItemUtils.java#L35


		return Controller.getGame().getRegistry().createBuilder(ItemStack.Builder.class).itemType(type).quantity(quantity).build();
	}
	
	public static void drop(ItemStack item, Player player) {
		
		Location<World> location = player.getLocation();
		
		Optional<Entity> o = location.getExtent().createEntity(EntityTypes.ITEM, location.getPosition());
		if (o.isPresent()) {
		    Item i = (Item) o.get();
		    i.offer(Keys.REPRESENTED_ITEM, item.createSnapshot());
		    location.getExtent().spawnEntity(i, Cause.source(EntitySpawnCause.builder().entity(i).type(SpawnTypes.PLUGIN).build()).build());
		}
		
	}
	
	public static ItemType getType(String type) {
		Optional<ItemType> o = Controller.getGame().getRegistry().getType(ItemType.class, type);
		if(o.isPresent()) return o.get(); return null;
	}

Basically, the dev is not passing a proper SpawnCause when spawning the item.