[SOLVED][1.12.2]Ticking block entity while trying to find adjacent EnergyStorages

[GloriousAlpaca]

Hello,

I'm having a problem with my tile entity while searching for nearby EnergyStorages (Conduits).

This is my code for finding adjacent Tile Entities with the EnergyStorage Capability:

@Override
	public void update(){
		if ((energy.getEnergyStored() != energy.getMaxEnergyStored())) {
			for(EnumFacing face : EnumFacing.values()) {
			BlockPos a = getPos().offset(face);
			TileEntity tile = world.getTileEntity(a);
			System.out.println(face.getName());		
				if (tile.hasCapability(CapabilityEnergy.ENERGY,face.getOpposite())) {
					System.out.println("ENERGIEZUFUHR");
					/*int maxCap = energy.receiveEnergy(energy.getMaxRec(), true);
					energy.receiveEnergy(tile.getCapability(CapabilityEnergy.ENERGY,face).extractEnergy(maxCap,false), false);*/
				}
			}
		}
	}

The method for receiving energy is currently a comment to avoid unrelated crashes.

This is the crash report I'm getting:

---- Minecraft Crash Report ----

WARNING: coremods are present:
  EnderCorePlugin (EnderCore-1.12.2-0.5.37.jar)
Contact their authors BEFORE contacting forge

// Why is it breaking :(

Time: 9/9/18 10:00 AM
Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
	at com.andreas.ame.tileentities.EntityLaser.update(EntityLaser.java:34)
	at net.minecraft.world.World.updateEntities(World.java:2004)
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:643)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:842)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:743)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:592)
	at java.lang.Thread.run(Thread.java:748)


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

-- Head --
Thread: Server thread
Stacktrace:
	at com.andreas.ame.tileentities.EntityLaser.update(EntityLaser.java:34)

-- Block entity being ticked --
Details:
	Name: ame:lasertable // com.andreas.ame.tileentities.EntityLaser
	Block type: ID #254 (tile.lasertable // com.andreas.ame.block.LaserTable)
	Block data value: 1 / 0x1 / 0b0001
	Block location: World: (-254,65,248), Chunk: (at 2,4,8 in -16,15; contains blocks -256,0,240 to -241,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Actual block type: ID #254 (tile.lasertable // com.andreas.ame.block.LaserTable)
	Actual block data value: 1 / 0x1 / 0b0001
Stacktrace:
	at net.minecraft.world.World.updateEntities(World.java:2004)
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:643)

-- Affected level --
Details:
	Level name: TEST
	All players: 0 total; []
	Chunk stats: ServerChunkCache: 625 Drop: 0
	Level seed: 6028521562681449438
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-228,64,236), Chunk: (at 12,4,12 in -15,14; contains blocks -240,0,224 to -225,255,239), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 257696 game time, 257696 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 123631 (now: false), thunder time: 150 (now: true)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:842)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:743)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:592)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 1.12.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_171, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 378688064 bytes (361 MB) / 1168637952 bytes (1114 MB) up to 1894252544 bytes (1806 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	FML: MCP 9.42 Powered by Forge 14.23.4.2705 24 mods loaded, 24 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

	| State     | ID                                | Version       | Source                                          | Signature                                |
	|:--------- |:--------------------------------- |:------------- |:----------------------------------------------- |:---------------------------------------- |
	| UCHIJAAAA | minecraft                         | 1.12.2        | minecraft.jar                                   | None                                     |
	| UCHIJAAAA | mcp                               | 9.42          | minecraft.jar                                   | None                                     |
	| UCHIJAAAA | FML                               | 8.0.99.99     | forgeSrc-1.12.2-14.23.4.2705.jar                | None                                     |
	| UCHIJAAAA | forge                             | 14.23.4.2705  | forgeSrc-1.12.2-14.23.4.2705.jar                | None                                     |
	| UCHIJAAAA | ame                               | 1.0           | ame-0.1.jar                                     | None                                     |
	| UCHIJAAAA | codechickenlib                    | 3.2.0.345     | CodeChickenLib-1.12.2-3.2.0.345-universal.jar   | f1850c39b2516232a2108a7bd84d1cb5df93b261 |
	| UCHIJAAAA | redstoneflux                      | 2.0.2         | RedstoneFlux-1.12-2.0.2.3-universal.jar         | 8a6abf2cb9e141b866580d369ba6548732eff25f |
	| UCHIJAAAA | cofhcore                          | 4.5.2         | CoFHCore-1.12.2-4.5.2.19-universal.jar          | None                                     |
	| UCHIJAAAA | cofhworld                         | 1.2.0         | CoFHWorld-1.12.2-1.2.0.5-universal.jar          | 8a6abf2cb9e141b866580d369ba6548732eff25f |
	| UCHIJAAAA | endercore                         | 1.12.2-0.5.37 | EnderCore-1.12.2-0.5.37.jar                     | None                                     |
	| UCHIJAAAA | thermalfoundation                 | 2.5.0         | ThermalFoundation-1.12.2-2.5.0.19-universal.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
	| UCHIJAAAA | thermalexpansion                  | 5.5.0         | ThermalExpansion-1.12.2-5.5.0.29-universal.jar  | 8a6abf2cb9e141b866580d369ba6548732eff25f |
	| UCHIJAAAA | enderio                           | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiointegrationtic             | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiobase                       | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderioconduits                   | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderioconduitsappliedenergistics | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderioconduitsopencomputers      | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderioconduitsrefinedstorage     | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiointegrationforestry        | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiointegrationticlate         | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiomachines                   | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | enderiopowertools                 | 5.0.31        | EnderIO-1.12.2-5.0.31.jar                       | None                                     |
	| UCHIJAAAA | thermaldynamics                   | 2.5.1         | ThermalDynamics-1.12.2-2.5.1.14-universal.jar   | 8a6abf2cb9e141b866580d369ba6548732eff25f |

	Loaded coremods (and transformers): 
EnderCorePlugin (EnderCore-1.12.2-0.5.37.jar)
  com.enderio.core.common.transform.EnderCoreTransformer
  com.enderio.core.common.transform.SimpleMixinPatcher
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Ender IO: No known problems detected.

	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
	!!!You are looking at the diagnostics information, not at the crash.       !!!
	!!!Scroll up until you see the line with '---- Minecraft Crash Report ----'!!!
	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'

I get it instantly if I place the block.

Help would be appreciated!

Edited September 9, 2018 by GloriousAlpaca

[V0idWa1k3r]

2 hours ago, GloriousAlpaca said:

TileEntity tile = world.getTileEntity(a);

This can and will return null if a block at a given position doesn't have a tile entity. So

2 hours ago, GloriousAlpaca said:

if (tile.hasCapability(CapabilityEnergy.ENERGY,face.getOpposite()))

You can't just do that a few lines later without checking for null first.

[GloriousAlpaca]

2 minutes ago, V0idWa1k3r said:

This can and will return null if a block at a given position doesn't have a tile entity. So

You can't just do that a few lines later without checking for null first.

Ohhhh !

Thank you, that helped me a lot.