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[1.7.2] disappearing entity

Posted August 21, 201411 yr

I have made an entity that works as automatical cannon but the entity disappears when I leave the world.

Does anybody know how I can save the entity?

Here is the entity code:

public class EntityTowerGun extends Entity{

private String side;

public EntityTowerGun(World world, double x, double y, double z, String side) {
	super(world);
	setSize(1.0F, 1.0F);
	posX = x;
	posY = y;
	posZ = z;
	this.side = side;
}
public void onUpdate(){
	super.onUpdate();
	targetMobs();
}


@Override
protected void entityInit() {
}

@Override
protected void readEntityFromNBT(NBTTagCompound var1) {
	super.readFromNBT(var1);
}

@Override
protected void writeEntityToNBT(NBTTagCompound var1) {
	super.writeToNBT(var1);
}
public void targetMobs(){
	Entity entity = null;
	if(side == "north"){
        List list = this.worldObj.getEntitiesWithinAABB(EntityMob.class, AxisAlignedBB.getBoundingBox(posX - 3, posY - 10, posZ - 4, posX + 4, posY + 0, posZ - 1));

        for (int j = 0; j < list.size(); ++j)
        {
            Entity entity1 = (Entity)list.get(j);
            this.worldObj.spawnEntityInWorld(new EntityGunBullet(this.worldObj, posX, posY, posZ, entity1.posX, entity1.posY, entity1.posZ));
        	}
	}
	if(side == "west"){
        List list = this.worldObj.getEntitiesWithinAABB(EntityMob.class, AxisAlignedBB.getBoundingBox(posX - 4, posY - 10, posZ - 3, posX - 1, posY + 0, posZ + 4));

        for (int j = 0; j < list.size(); ++j)
        {
            Entity entity1 = (Entity)list.get(j);
            this.worldObj.spawnEntityInWorld(new EntityGunBullet(this.worldObj, posX, posY, posZ, entity1.posX, entity1.posY, entity1.posZ));
        }
	}
	if(side == "east"){
        List list = this.worldObj.getEntitiesWithinAABB(EntityMob.class, AxisAlignedBB.getBoundingBox(posX + 2, posY - 10, posZ - 3, posX + 5, posY + 0, posZ + 4));

        for (int j = 0; j < list.size(); ++j)
        {
            Entity entity1 = (Entity)list.get(j);
            this.worldObj.spawnEntityInWorld(new EntityGunBullet(this.worldObj, posX + 1, posY, posZ, entity1.posX, entity1.posY, entity1.posZ));
        }
	}
	if(side == "south"){
        List list = this.worldObj.getEntitiesWithinAABB(EntityMob.class, AxisAlignedBB.getBoundingBox(posX - 3, posY - 10, posZ + 2, posX + 4, posY + 0, posZ + 5));

        for (int j = 0; j < list.size(); ++j)
        {
            Entity entity1 = (Entity)list.get(j);
            this.worldObj.spawnEntityInWorld(new EntityGunBullet(this.worldObj, posX, posY, posZ + 1, entity1.posX, entity1.posY, entity1.posZ));
        }
	}
        
}

}

Quote

August 21, 201411 yr

Did you spawn it on the server?

When its spawned on the server it appears to exist but wont be saved.

PM's regarding modding questions should belong in the Modder Support sub-forum and won't be answered.

Quote

August 22, 201411 yr

Author

I didn't register it.

I think that is the problem.

Here is the way I spawn it:

world.spawnEntityInWorld(new EntityTowerGun(world, x + 0, y + 4, z + 2, "south"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x - 0, y + 4, z - 2, "north"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x + 2, y + 4, z + 0, "east"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x - 2, y + 4, z - 0, "west"));

I am going to look how to update to 1.7.10.

Quote

August 22, 201411 yr

Author

Updating to 1.7.10 have caused problems, I am going to create another topic for this.

I am happy I have made a back-up before trying to update.

But for now:

I have made this EntityHandler and 1 static method:

public class EntityHandler {
public static void registerShooter(Class entityClass, String name){
	int entityId = EntityRegistry.findGlobalUniqueEntityId();
	long x = name.hashCode();
	Random random = new Random(x);
	EntityRegistry.registerGlobalEntityID(entityClass, name, entityId);
	EntityRegistry.registerModEntity(entityClass, name, entityId, KnokkoBlocks.instance, 64, 1, true);
}

}

If I try to summon the entity with this code:

world.spawnEntityInWorld(new EntityTowerGun(world, x + 0, y + 4, z + 2, "south"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x - 0, y + 4, z - 2, "north"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x + 2, y + 4, z + 0, "east"));
	world.spawnEntityInWorld(new EntityTowerGun(world, x - 2, y + 4, z - 0, "west"));

My world crashes and I was sended back to the title screen.

This was the report in the console:

[10:29:46] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel FML

java.lang.RuntimeException: java.lang.NoSuchMethodException: towerdefence.entities.EntityTowerGun.<init>(net.minecraft.world.World)

at com.google.common.base.Throwables.propagate(Throwables.java:160) ~[guava-15.0.jar:?]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.spawnEntity(EntitySpawnHandler.java:121) ~[EntitySpawnHandler.class:?]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.channelRead0(EntitySpawnHandler.java:34) ~[EntitySpawnHandler.class:?]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.channelRead0(EntitySpawnHandler.java:28) ~[EntitySpawnHandler.class:?]

at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[simpleChannelInboundHandler.class:?]

at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]

at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]

at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]

at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]

at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]

at cpw.mods.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:80) [FMLProxyPacket.class:?]

at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:232) [NetworkManager.class:?]

at net.minecraft.client.multiplayer.PlayerControllerMP.updateController(PlayerControllerMP.java:321) [PlayerControllerMP.class:?]

at net.minecraft.client.Minecraft.runTick(Minecraft.java:1647) [Minecraft.class:?]

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:994) [Minecraft.class:?]

at net.minecraft.client.Minecraft.run(Minecraft.java:910) [Minecraft.class:?]

at net.minecraft.client.main.Main.main(Main.java:112) [Main.class:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_05]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_05]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_05]

at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_05]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]

Caused by: java.lang.NoSuchMethodException: towerdefence.entities.EntityTowerGun.<init>(net.minecraft.world.World)

at java.lang.Class.getConstructor0(Class.java:2971) ~[?:1.8.0_05]

at java.lang.Class.getConstructor(Class.java:1812) ~[?:1.8.0_05]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.spawnEntity(EntitySpawnHandler.java:72) ~[EntitySpawnHandler.class:?]

... 24 more

[10:29:46] [server thread/INFO]: Player906 lost connection: TranslatableComponent{key='disconnect.genericReason', args=[internal Exception: java.lang.ClassCastException: net.minecraft.network.NetHandlerPlayServer cannot be cast to net.minecraft.network.play.INetHandlerPlayClient], siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null}}

[10:29:46] [server thread/INFO]: Player906 left the game

[10:29:46] [server thread/INFO]: Stopping singleplayer server as player logged out

[10:29:46] [server thread/INFO]: Stopping server

[10:29:46] [server thread/INFO]: Saving players

[10:29:46] [server thread/INFO]: Saving worlds

[10:29:46] [server thread/INFO]: Saving chunks for level 'test wereld'/Overworld

[10:29:52] [server thread/ERROR]: Exception stopping the server

java.lang.NoClassDefFoundError: net/minecraft/entity/Entity$1

at net.minecraft.entity.Entity.addEntityCrashInfo(Entity.java:2463) ~[Entity.class:?]

at net.minecraft.entity.Entity.writeToNBT(Entity.java:1578) ~[Entity.class:?]

at net.minecraft.entity.Entity.writeToNBTOptional(Entity.java:1515) ~[Entity.class:?]

at net.minecraft.world.chunk.storage.AnvilChunkLoader.writeChunkToNBT(AnvilChunkLoader.java:299) ~[AnvilChunkLoader.class:?]

at net.minecraft.world.chunk.storage.AnvilChunkLoader.saveChunk(AnvilChunkLoader.java:132) ~[AnvilChunkLoader.class:?]

at net.minecraft.world.gen.ChunkProviderServer.safeSaveChunk(ChunkProviderServer.java:229) ~[ChunkProviderServer.class:?]

at net.minecraft.world.gen.ChunkProviderServer.saveChunks(ChunkProviderServer.java:281) ~[ChunkProviderServer.class:?]

at net.minecraft.world.WorldServer.saveAllChunks(WorldServer.java:875) ~[WorldServer.class:?]

at net.minecraft.server.MinecraftServer.saveAllWorlds(MinecraftServer.java:370) ~[MinecraftServer.class:?]

at net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:403) ~[MinecraftServer.class:?]

at net.minecraft.server.integrated.IntegratedServer.stopServer(IntegratedServer.java:255) ~[integratedServer.class:?]

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:531) [MinecraftServer.class:?]

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:742) [MinecraftServer$2.class:?]

[10:30:40] [server thread/INFO]: Starting integrated minecraft server version 1.7.2

[10:30:40] [server thread/INFO]: Generating keypair

[10:30:40] [server thread/INFO] [FML]: Injecting existing block and item data into this server instance

[10:30:40] [server thread/INFO] [FML]: Loading dimension 0 (test wereld) (net.minecraft.server.integrated.IntegratedServer@158b6c87)

[10:30:40] [server thread/INFO] [FML]: Loading dimension 1 (test wereld) (net.minecraft.server.integrated.IntegratedServer@158b6c87)

[10:30:40] [server thread/INFO] [FML]: Loading dimension -1 (test wereld) (net.minecraft.server.integrated.IntegratedServer@158b6c87)

[10:30:40] [server thread/INFO]: Preparing start region for level 0

[10:30:40] [Netty Client IO #1/INFO] [FML]: Server protocol version 1

[10:30:40] [Netty IO #3/INFO] [FML]: Client protocol version 1

[10:30:40] [Netty IO #3/INFO] [FML]: Client attempting to join with 4 mods : [email protected],[email protected],[email protected],[email protected]

[10:30:40] [Netty IO #3/INFO] [FML]: Attempting connection with missing mods [] at CLIENT

[10:30:40] [Netty Client IO #1/INFO] [FML]: Attempting connection with missing mods [] at SERVER

[10:30:40] [server thread/INFO] [FML]: [server thread] Server side modded connection established

[10:30:40] [server thread/INFO]: Player906[local:E:09e54a9d] logged in with entity id 234 at (54.171985872460056, 4.0, 32.67048414492105)

[10:30:40] [server thread/INFO]: Player906 joined the game

[10:30:40] [Client thread/INFO] [FML]: [Client thread] Client side modded connection established

[10:30:43] [Client thread/ERROR] [FML]: A severe problem occurred during the spawning of an entity

java.lang.NoSuchMethodException: towerdefence.entities.EntityTowerGun.<init>(net.minecraft.world.World)

at java.lang.Class.getConstructor0(Class.java:2971) ~[?:1.8.0_05]

at java.lang.Class.getConstructor(Class.java:1812) ~[?:1.8.0_05]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.spawnEntity(EntitySpawnHandler.java:72) [EntitySpawnHandler.class:?]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.channelRead0(EntitySpawnHandler.java:34) [EntitySpawnHandler.class:?]

at cpw.mods.fml.common.network.internal.EntitySpawnHandler.channelRead0(EntitySpawnHandler.java:28) [EntitySpawnHandler.class:?]

at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) [simpleChannelInboundHandler.class:?]

at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]

at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:?]

at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [MessageToMessageCodec.class:?]

at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]

at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?]

at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?]