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Replacing entities crash

SureenInk

By SureenInk
in Modder Support

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SureenInk Creeper Killer

SureenInk

Posted
Posted

So, I looked up a tutorial, and it said that to replace an entity with another one on spawn, I had to run an event handler. I programmed my event handler the way he did, and it didn't work. I then saw someone else's code and it worked for them but was different, so I tried that code. So far, neither works, and the second causes errors while the first just outright doesn't work. Can anyone help me figure out why?

 

Original Code:

package craftygirls.core.events;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import craftygirls.core.entity.EntityNeola;
import craftygirls.core.entity.NeolaTameable;
import net.minecraftforge.event.entity.living.LivingSpawnEvent;

public class CraftyEventHandling {

@SubscribeEvent
public void onEntityLivingSpawn(LivingSpawnEvent event) {
	if (!event.world.isRemote) {
		if (event.entityLiving instanceof EntityNeola) {
			EntityNeola oldNeola = (EntityNeola)event.entityLiving;

			if (oldNeola.getCanSpawnHere()) {
				NeolaTameable newNeola = new NeolaTameable(event.world);
				newNeola.setLocationAndAngles(oldNeola.posX, oldNeola.posY, oldNeola.posZ, oldNeola.rotationYaw, oldNeola.rotationPitch);
				event.world.spawnEntityInWorld(newNeola);
				oldNeola.setDead();
			}
		}
	}
}

}

 

Second Code (that errors):

package craftygirls.core.events;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import craftygirls.core.entity.EntityNeola;
import craftygirls.core.entity.NeolaTameable;
import net.minecraft.world.World;
import net.minecraftforge.event.entity.living.LivingSpawnEvent;

public class CraftyEventHandling {

@SubscribeEvent
public void onEntityLivingSpawn(LivingSpawnEvent event) {
	if (!event.entity.worldObj.isRemote && event.entityLiving instanceof EntityNeola) {
			EntityNeola oldNeola = (EntityNeola)event.entity;
			World world = oldNeola.worldObj;
				NeolaTameable newNeola = new NeolaTameable(world);
				newNeola.setPosition(event.entity.posX, event.entity.posY, event.entity.posZ);
				event.world.spawnEntityInWorld(newNeola);
				oldNeola.setDead();
	}
}
}

Error with code:

[01:17:34] [Client thread/FATAL]: Unreported exception thrown!
java.lang.NullPointerException
at net.minecraft.client.network.NetHandlerPlayClient.handleSpawnMob(NetHandlerPlayClient.java:853) ~[NetHandlerPlayClient.class:?]
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:129) ~[s0FPacketSpawnMob.class:?]
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:222) ~[s0FPacketSpawnMob.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) ~[?:1.7.0_51]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
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:?]
---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 4/24/14 1:17 AM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at net.minecraft.client.network.NetHandlerPlayClient.handleSpawnMob(NetHandlerPlayClient.java:853)
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:129)
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:222)
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:232)
at net.minecraft.client.multiplayer.PlayerControllerMP.updateController(PlayerControllerMP.java:321)
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1647)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:994)
at net.minecraft.client.Minecraft.run(Minecraft.java:910)
at net.minecraft.client.main.Main.main(Main.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at net.minecraft.client.network.NetHandlerPlayClient.handleSpawnMob(NetHandlerPlayClient.java:853)
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:129)
at net.minecraft.network.play.server.S0FPacketSpawnMob.processPacket(S0FPacketSpawnMob.java:222)
at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:232)
at net.minecraft.client.multiplayer.PlayerControllerMP.updateController(PlayerControllerMP.java:321)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['Player763'/170, l='MpServer', x=-176.53, y=87.23, z=362.89]]
Chunk stats: MultiplayerChunkCache: 314, 314
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options: 
Level spawn location: World: (8,64,256), Chunk: (at 8,4,0 in 0,16; contains blocks 0,0,256 to 15,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 6049 game time, 6049 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 75 total; [EntityChicken['Chicken'/0, l='MpServer', x=-191.50, y=67.00, z=384.50], EntityChicken['Chicken'/1, l='MpServer', x=-190.47, y=81.00, z=409.44], EntityChicken['Chicken'/2, l='MpServer', x=-185.61, y=78.00, z=398.56], EntityChicken['Chicken'/3, l='MpServer', x=-185.19, y=76.00, z=422.56], EntityChicken['Chicken'/4, l='MpServer', x=-186.59, y=76.00, z=422.59], EntitySkeleton['Skeleton'/5, l='MpServer', x=-180.50, y=62.00, z=443.50], EntitySkeleton['Skeleton'/6, l='MpServer', x=-187.69, y=60.00, z=443.50], EntityBat['Bat'/1368, l='MpServer', x=-240.63, y=35.46, z=398.08], EntityZombie['Zombie'/7, l='MpServer', x=-181.50, y=62.00, z=445.50], EntityBat['Bat'/1364, l='MpServer', x=-253.63, y=35.10, z=402.75], EntitySkeleton['Skeleton'/14, l='MpServer', x=-164.47, y=64.00, z=373.16], EntitySkeleton['Skeleton'/15, l='MpServer', x=-160.50, y=63.00, z=374.50], EntityCreeper['Creeper'/21, l='MpServer', x=-149.50, y=58.00, z=431.50], EntityZombie['Zombie'/20, l='MpServer', x=-151.84, y=64.00, z=374.38], EntitySpider['Spider'/23, l='MpServer', x=-140.22, y=24.00, z=427.09], EntityChicken['Chicken'/22, l='MpServer', x=-159.47, y=70.00, z=422.53], EntitySkeleton['Skeleton'/25, l='MpServer', x=-138.50, y=24.00, z=432.50], EntityChicken['Chicken'/24, l='MpServer', x=-123.63, y=71.00, z=432.47], EntityChicken['Chicken'/27, l='MpServer', x=-141.58, y=78.00, z=440.06], EntitySpider['Spider'/26, l='MpServer', x=-136.50, y=24.00, z=436.50], EntitySpider['Spider'/29, l='MpServer', x=-117.50, y=42.00, z=384.50], EntityChicken['Chicken'/28, l='MpServer', x=-129.53, y=71.00, z=437.47], EntitySkeleton['Skeleton'/30, l='MpServer', x=-125.94, y=13.00, z=410.47], EntityCreeper['Creeper'/1609, l='MpServer', x=-253.50, y=30.00, z=423.50], EntityCreeper['Creeper'/32, l='MpServer', x=-115.69, y=19.00, z=411.34], EntityCreeper['Creeper'/33, l='MpServer', x=-124.41, y=14.00, z=411.00], EntityZombie['Zombie'/38, l='MpServer', x=-106.34, y=33.00, z=335.41], EntityCreeper['Creeper'/39, l='MpServer', x=-124.66, y=29.00, z=341.95], EntitySheep['Sheep'/37, l='MpServer', x=-102.88, y=67.00, z=312.28], EntityBat['Bat'/784, l='MpServer', x=-113.66, y=32.10, z=350.75], EntitySkeleton['Skeleton'/42, l='MpServer', x=-103.50, y=35.00, z=364.50], EntitySkeleton['Skeleton'/43, l='MpServer', x=-107.50, y=35.00, z=364.50], EntitySheep['Sheep'/41, l='MpServer', x=-101.34, y=66.00, z=322.59], EntityZombie['Zombie'/46, l='MpServer', x=-109.50, y=36.00, z=388.50], EntityZombie['Zombie'/47, l='MpServer', x=-105.50, y=32.00, z=384.50], EntityZombie['Zombie'/44, l='MpServer', x=-106.50, y=32.00, z=383.50], EntityChicken['Chicken'/50, l='MpServer', x=-105.56, y=86.00, z=428.66], EntityChicken['Chicken'/49, l='MpServer', x=-107.47, y=86.00, z=431.47], EntityBat['Bat'/773, l='MpServer', x=-245.53, y=46.00, z=426.75], EntityZombie['Zombie'/48, l='MpServer', x=-107.50, y=32.00, z=385.50], EntityZombie['Zombie'/1853, l='MpServer', x=-118.50, y=21.00, z=312.50], EntityCreeper['Creeper'/1855, l='MpServer', x=-115.53, y=24.00, z=320.34], EntityBat['Bat'/883, l='MpServer', x=-117.00, y=24.00, z=333.55], EntityZombie['Zombie'/1854, l='MpServer', x=-120.50, y=21.00, z=310.50], EntitySkeleton['Skeleton'/1029, l='MpServer', x=-137.97, y=12.00, z=414.59], EntityBat['Bat'/871, l='MpServer', x=-245.46, y=32.00, z=435.40], EntityBat['Bat'/872, l='MpServer', x=-244.02, y=35.00, z=444.80], EntityCreeper['Creeper'/1591, l='MpServer', x=-162.53, y=69.28, z=337.91], EntityZombie['Zombie'/851, l='MpServer', x=-114.50, y=42.00, z=385.50], EntityBat['Bat'/2303, l='MpServer', x=-247.15, y=16.84, z=303.65], EntityZombie['Zombie'/850, l='MpServer', x=-114.50, y=42.00, z=387.50], EntityBat['Bat'/2300, l='MpServer', x=-225.60, y=23.51, z=309.68], EntityZombie['Zombie'/849, l='MpServer', x=-119.50, y=42.00, z=384.50], EntityZombie['Zombie'/852, l='MpServer', x=-116.50, y=42.00, z=382.50], EntitySpider['Spider'/2281, l='MpServer', x=-157.87, y=63.00, z=380.07], EntityZombie['Zombie'/2032, l='MpServer', x=-102.50, y=19.00, z=417.50], EntityCreeper['Creeper'/2034, l='MpServer', x=-104.25, y=18.00, z=413.50], EntityBat['Bat'/2305, l='MpServer', x=-235.63, y=18.65, z=291.13], EntityChicken['Chicken'/186, l='MpServer', x=-223.84, y=77.00, z=412.41], EntityChicken['Chicken'/187, l='MpServer', x=-223.53, y=76.00, z=407.97], EntityChicken['Chicken'/184, l='MpServer', x=-222.50, y=80.00, z=378.50], EntityChicken['Chicken'/185, l='MpServer', x=-222.50, y=80.00, z=378.50], EntityChicken['Chicken'/190, l='MpServer', x=-202.44, y=62.52, z=376.56], EntityChicken['Chicken'/191, l='MpServer', x=-192.50, y=66.00, z=383.50], EntityChicken['Chicken'/188, l='MpServer', x=-222.50, y=81.00, z=412.50], EntityChicken['Chicken'/189, l='MpServer', x=-222.50, y=81.00, z=412.50], EntityChicken['Chicken'/178, l='MpServer', x=-225.91, y=81.00, z=375.56], EntityCreeper['Creeper'/2365, l='MpServer', x=-247.50, y=44.00, z=422.50], EntityChicken['Chicken'/183, l='MpServer', x=-220.50, y=80.00, z=378.50], EntityCreeper['Creeper'/2366, l='MpServer', x=-243.50, y=44.00, z=424.50], EntitySkeleton['Skeleton'/1433, l='MpServer', x=-125.31, y=29.00, z=343.60], EntitySkeleton['Skeleton'/193, l='MpServer', x=-192.50, y=39.00, z=425.50], EntityChicken['Chicken'/192, l='MpServer', x=-193.50, y=70.00, z=382.50], EntityClientPlayerMP['Player763'/170, l='MpServer', x=-176.53, y=87.23, z=362.89], EntityBat['Bat'/1456, l='MpServer', x=-243.75, y=26.98, z=410.41]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:412)
at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2521)
at net.minecraft.client.Minecraft.run(Minecraft.java:939)
at net.minecraft.client.main.Main.main(Main.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 745461440 bytes (710 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
AABB Pool Size: 9299 (520744 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.01-pre FML v7.2.156.1060 Minecraft Forge 10.12.1.1060 7 mods loaded, 7 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.156.1060} [Forge Mod Loader] (forgeSrc-1.7.2-10.12.1.1060.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.1.1060} [Minecraft Forge] (forgeSrc-1.7.2-10.12.1.1060.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
sureencore{V1.0} [sureen Core] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
craftygirls{Alpha v0.6} [The Crafty Girls Core Mod] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
gemsmod{Alpha v0.1} [Gems Mod] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
youtubers{Alpha v0.1} [Youtubers Mod] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.6
LWJGL: 2.9.0
OpenGL: GeForce GT 635/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1787 (100072 bytes; 0 MB) allocated, 22 (1232 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
#@!@# Game crashed! Crash report saved to: #@!@# C:\Users\Sureen Ink\Desktop\Minecraft Mods\forge-1.7.2-1060\eclipse\.\crash-reports\crash-2014-04-24_01.17.34-client.txt
AL lib: (EE) alc_cleanup: 1 device not closed

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SureenInk Creeper Killer

SureenInk

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Posted

Well, I can't seem to spawn in tameable entities via the regular code because it's hard coded in. Someone said the only way to do that is to learn ASM and I can't find anything on that (nor do I even know what it means...which makes it hard to look for). So, I found a tutorial on how to spawn in entities the game won't normally let you spawn in. What this does is make it so that whenever an entity that I want to be tameable is spawned it, it spawns in the tameable version on top of the non-tameable version, then removes the non-tameable version.

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